|UNITED STATES SECURITIES AND EXCHANGE COMMISSIONWashington, D.C.  20549                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|FORM 10-K                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|(Mark One)
[X]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|For the fiscal year ended April 30, 2006or                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|[  ]Transition Report Pursuant to Section 13 or 15(d) of the Security Exchange Act of 1934 (No Fee Required)                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|For the Transition Period from __________ to __________.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Commission File Number 0-1678                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|BUTLER NATIONAL CORPORATION(Exact name of Registrant as specified in its charter)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Kansas(State of Incorporation)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|19920 West 161st Street, Olathe, Kansas 66062(Address of Principal Executive Office)(Zip Code)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Registrant's telephone number, including area code:     (913) 780-9595                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Securities registered pursuant to Section 12(b) of the Act:   None                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Securities registered pursuant to Section 12(g) of the Act:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Common Stock $.01 Par Value(Title of Class)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Indicate by check if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. 
Yes [  ]No [X]
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.
Yes [  ]   No [X]
Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding twelve months and (2) has been subject to such filing requirements for the past ninety days:  Yes [X]  No [  ]
|Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [ ]                                                                                                                                                                                                     
|Indicate by check mark whether the registrant is a large accelerated filer an accelerated filer, or a non-accelerated filer.
Large accelerated filer [ ]      Accelerated filer [ ]    Non-accelerated filer  [X]                                                                                                                                                                                                                                                                                                                                                               
|Indicate by check mark whether the registrant is a shell company.  Yes [  ]   No [X]
The aggregate market value of the voting stock and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity of the Registrant was approximately $14,921,927at July 7, 2006, when the average bid and asked prices of such stock was $0.34.                                                                                                                    
|The number of shares outstanding of the Registrant's Common Stock, $0.01 par value, as of July 7, 2006, was 53,051,837 shares.                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|DOCUMENTS INCORPORATED BY REFERENCE: NONE                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|This Form 10-K consists of 64 pages (including exhibits).  The index to exhibits is set forth on pages 32-34.                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

|PART I                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
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|Item 1.  BUSINESS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Forward Looking Information                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|The information set forth below includes "forward-looking" information as outlined in the Private Securities Litigation Reform Act of 1995.  The Cautionary Statements, filed by us as Exhibit 99 to this Form 10-K, are incorporated herein by reference and you are specifically referred to such Cautionary Statements for a discussion of factors which could affect our operations and forward-looking statements contained herein.  These Risk Factors are also listed in Part I Item 1A.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|General                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Butler National Corporation (the "Company" or "BNC") is a Kansas corporation formed in 1960, with corporate headquarters at 19920 West 161st Street, Olathe, Kansas 66062.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Current Activities.Our current product lines and services include:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Aircraft Modifications - principally includes the modification of customer and company owned business-size aircraft from passenger to freighter configuration, addition of aerial photography capability, and stability enhancing modifications for Learjet, Beechcraft, Cessna, and Dassault Falcon aircraft along with other specialized modifications.  We provide these services through our subsidiary, Avcon Industries, Inc. ("Aircraft Modifications" or "Avcon").  Avionics - principally includes the manufacture, sale and service of airborne electronic switching units used in DC-9, DC-10, DC-9/80, MD-80, MD-90 and the KC-10 aircraft, Transient Suppression Devices (TSDs) for fuel tank protection on Boeing Classic 737 and 747 aircraft and other Classic aircraft using a capacitance fuel quantity indicating system ("FQIS"), airborne electronics upgrades for classic weapon control systems used on military aircraft and vehicles, and consulting services with airlines and equipment manufacturers regarding fuel system safety requirements.  We provide the products through our subsidiary, Butler National Corporation - Tempe, Arizona and the services through Butler National Corporation - Olathe, Kansas ("Avionics", "Classic Aviation Products", "Safety Products", "Switching Units", or "WAI").Aircraft - Acquisition, Modification and Sales -Our subsidiary, Butler National, Inc., purchases airplanes, principally Learjets, modifies the planes and sells the planes directly to customers or receives a broker fee for placing an airplane with a customer.  Also, the Company-owned aircraft are sometimes used to prove the design, testing and compliance of STC modifications during the FAA approval process.Services - SCADA (Supervisory Control and Data Acquisition) Systems and Monitoring Services - principally includes the monitoring and related repair services of water and wastewater remote pumping stations through electronic surveillance for municipalities and the private sector.  We provide these services through our subsidiary, Butler National Services, Inc. ("Monitoring Services" or "BNS").Corporate / Professional Services - provides as a management service licensed architectural services through our subsidiary, BCS Design, Inc.  These services include commercial and industrial building design and graphic representation.  We have expanded this segment to include aviation-related engineering consulting services and operate as the Butler National Aircraft Certification Center ("BNACC").Gaming - principally includes business management services and advances to Indian tribes in connection with the Indian Gaming Regulatory Act of 1988.  We provide these management services and advances through our subsidiary, Butler National Service Corporation ("Management Services", "Gaming" "IGC" or "BNSC").

|Assets as of April 30, 2006 and Net Revenues for the year ended April 30, 2006.
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|Regulations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       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|Regulation Under Federal Aviation Administration:  Our Avionics and Aircraft Modifications segments are subject to regulation by the Federal Aviation Administration ("FAA").  We manufacture products and parts under FAA Parts Manufacturing Authority (PMA) requiring qualification and traceability of all materials and vendors used by us.  We make aircraft modifications pursuant to the authority granted by Supplemental Type Certificates issued by the FAA.  We repair aircraft parts pursuant to the authority granted by our FAA Authorized Repair Station.  Violation or changes to FAA regulations could be detrimental to our operation in these business segments.Licensing and Regulation under Federal Indian Law:  Before commencing gaming operations (Class II or Class III) on Indian Land, we must obtain the approval of various regulatory entities.  Gaming on Indian land is extensively regulated by Federal, State and Tribal governments and authorities.  Regulatory changes could limit or otherwise materially affect the types of gaming that may be conducted on Indian Land.  All aspects of our proposed business operations on Indian Lands are subject to approval, regulation and oversight by the Bureau of Indian Affairs ("BIA"), the Secretary of the United States Department of the Interior ("Secretary"), and the National Indian Gaming Commission ("NIGC").  Our management of Class III gaming operations is also subject to approval of a Class III Gaming Compact between the Indian Tribe and the respective state.   Failure to comply with applicable laws or regulations, whether Federal, State or Tribal, could result in, among other things, the termination of any management agreements which would have a material adverse effect on us.  Management agreement terms are also regulated by the Indian Gaming Regulatory Act ("IGRA"), which restricts initial terms to five years and management fees to 30% of the net profits of the casino, except in certain circumstances where the term may be extended to seven years and the management fee increased to 40%.  Management agreements with Indian Tribes will not be approved by the NIGC unless, among other things, background checks of the directors and officers of the manager and its ten largest holders of capital stock have been satisfactorily completed.  We will also be required to comply with background checks as specified in Tribal-State Compacts before we can manage gaming operations on Indian land.  Background checks by the NIGC may take up to 180 days and may be extended to 270 days.  There can be no assurance that we would continue to be successful in obtaining the necessary regulatory approvals for our proposed gaming operations on a timely basis, or at all.Licensing and Regulation under State of Kansas Law:  Our present and future shareholders are and will continue to be subject to review by regulatory agencies.  In connection with the our proposed operation of a Class III  Indian casino in the territorial boundaries of the State of Kansas, the Company, the appropriate Indian Tribe and the key personnel of all entities may be required to hold Class III licenses approved in the respective state prior to conducting operations.  The failure of the Company or the key personnel to obtain or retain a license in these states could have a material adverse effect on the Company or on its ability to obtain or retain Class III licenses in other jurisdictions. Each such State Gaming Agency has broad discretion in granting, renewing and revoking licenses. Obtaining such licenses and approvals will be time consuming and cannot be assured. The State of Kansas has approved pari-mutuel dog and/or horse racing for non-Indian organizations.  The State of Kansas operates lottery and keno games for the benefit of the State.  There is no assurance that a Tribal/State Compact between the Tribes and the State of Kansas can be completed.  If the Compact is not approved, there could be a material adverse effect on our plans for Class III gaming within the territorial boundaries of Kansas.
As a condition to obtaining and maintaining our Oklahoma Class III license or any other Class III license, we must submit detailed financial and other reports to the Indian Tribe and the respective federal and state regulatory Agencies ("the Agency").  Any person owning or acquiring 5% or more of the Common Stock of the Company must be found suitable by one or more of the agencies or the Indian Tribes ("the Interest").  Any Agency has the authority to require a finding of suitability with respect to any shareholder regardless of the percentage of ownership.  If found unsuitable by any Agency or the Indian Tribe, the shareholder must offer all of the Ownership Interest in Company stock held by such shareholder to the Company for cash at the current market bid price less a fifteen percent (15%) administrative charge and the Company must purchase such Interest within ten days of the offer.  The shareholder is required to pay all costs of investigation with respect to a determination of his/her suitability.  In addition, regardless of ownership, each member of the board of directors and certain officers of the Company are subject to a finding of suitability by any Agency and the Indian Tribe.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Financial Information about Industry Segments                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Information with respect to our industry segments are found at Note 10 of Notes to Consolidated Financial Statements for the year ended April 30, 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Narrative Description of BusinessAircraft Modifications                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Avcon modifies business-type aircraft in Newton, Kansas.  The modifications include aircraft conversion from passenger to freighter configuration, addition of aerial photography capability, stability enhancing modifications for Learjets, and other special mission modifications.  Avcon offers avionics, aerodynamic and stability improvement products for selected business jet aircraft.  Avcon makes these modifications to customer-owned aircraft and Company owned aircraft for resale.
Sales of the Aircraft Modifications products are handled directly through Avcon.  Specialty modifications are quoted individually by job.  We are geographically located in the marketplace for Aircraft Modifications products.  We believe there are two primary competitors (AAR of Oklahoma, and Raisbeck Engineering) in the industry in which the Aircraft Modifications division participates.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|The Aircraft Modifications business derives its ability to modify aircraft from the authority granted to it by the Federal Aviation Administration ("FAA").  The FAA grants this authority by issuing a Supplemental Type Certificate ("STC") after a detailed review of the design, engineering and functional documentation, and demonstrated flight evaluation of the modified aircraft.  The STC authorizes Avcon to build the required parts and assemblies under FAA Parts Manufacturing Authority ("PMA") and to make the installations on applicable aircraft.
Avcon owns over 250 STCs.  When the STC is applicable to a multiple number of aircraft it is categorized as a Multiple-Use STC.  These Multiple-Use STCs are considered a major asset of the Company.  Some of the Multiple-Use STCs include Reduced Vertical Separation Minimums (RVSM), Beechcraft Extended Door, Learjet AVCON FINS, Learjet Extended Tip Fuel Tanks, Learjet Weight Increase Package, Dassault Falcon 20 Cargo Door and many special mission modifications.
On May 3, 1996, Avcon received approval from the Federal Aviation Administration for a Multiple-Use Supplemental Type Certificate ("STC") (no. ST00432WI) of its AVCON FIN Modification for installation on Learjet Model 35 and 36 Aircraft.  FAA pilots thoroughly evaluated the test aircraft, and determined that the fins substantially increase the aerodynamic stability in all flight conditions.  The AVCON FIN STC eliminates the operational requirement for Yaw Dampers which are otherwise required in both Learjet models to control adverse yaw tendencies in certain flight conditions, particularly during approach and landing.  Learjets equipped with AVCON FINS exhibit the same aerodynamic stability and improved operating efficiency offered on newer Learjet models, while maintaining the outstanding range, speed and load-carrying capabilities that made the Learjet Models 35 and 36 among the most popular Business Jets ever produced.  Mounted like the feathers of an arrow on the rear of the aircraft, Learjets equipped with AVCON FINS have a look much the same as the current production aircraft.  This modification will give the Learjets produced in the 1970's and 1980's the look of the 21st century. 
During fiscal year 2002, Avcon made an application to the FAA for the approval of a Multiple-Use STC for the Learjet 20 RX Modification project (including the fins, weight increase, and tip tank extensions) for the Learjet Model 24 and 25 aircraft.  The initial fin STC for the 20 Series is expected in the fall of 2006.
Effective January 2005, the FAA required that all aircraft operating between 29,000 and 41,000 feet within the United States air space be RVSM compliant.  RVSM stands for Reduced Vertical Separation Minimums and means that now aircraft are separated by 1,000 feet vertically instead of the prior 2,000 feet.
During fiscal year 2003, Avcon made an application to the FAA for the approval of the Learjet 20 RVSM MOD (including dual pitot tubes, dual digital altimeters, dual air data computers, autopilot refinements and a standby altimeter) for the Learjet 20 series aircraft.
In April 2004, the FAA issued a Learjet 20 Series RVSM Group Approval to Avcon for its Supplemental Type Certificate Number ST01195WI.  This is a joint development project with Bizjet of Tulsa, Oklahoma.  Avcon supplies RVSM kits to Bizjet as part of the RVSM joint development project.
During fiscal 2006, Avcon made an application to the FAA for the approval to add the Learjet 30 RVSM MOD (including dual pitot tubes, dual digital altimeters, dual air data computers, autopilot refinements and a standby altimeter) for the Learjet 30 series aircraft to STC ST01195WI.
Avcon has an FAA Authorized Repair Station.  The focus of this repair station includes the Learjet model 20 and 30 series, Beechcraft King Air, Cessna turbine engine, Cessna multi-engine piston, and Dassault Falcon 20 aircraft.  The Repair Station is a convenience for our customers bringing aircraft in for modification and maintenance.  We also use the repair station for maintenance of aircraft purchased for modification and resale.
Aircraft - Acquisition, Modification and Sales
We actively purchase airplanes, through our subsidiary Butler National, Inc., principally Learjets.  Avcon modifies these planes and then we sell them directly to customers or to brokers.  Company owned aircraft are sometimes used to prove the design of the STC modifications during the FAA approval process.  
In fiscal 2006 we purchased three Learjet aircraft.  In November 2004 a Learjet 25 was sold for $424,000.  We sold a Learjet in fiscal 1999 for $2,100,000 and another in fiscal 2002 for $1,425,000.    Butler National, Inc. is currently searching for quality Learjet 20 and 30 series aircraft for modification and resale.  We continue to evaluate the benefits of leasing our aircraft inventory.
Avionics

Classic Aviation Products:  Our mission is to provide and support economical products for older aircraft, often referred to as "Classic" aircraft.  As a result of more than 40 years in the aircraft switching unit business, we recognize the potential to support many aircraft in the last half of their expected service life.  The business mission of the company promotes us as a designer and supplier of "Classic Aviation Products".  A part of the Classic products are directed to supporting safety of flight for the older aircraft.
Butler National Corporation - Tempe, Arizona, manufactures and repairs airborne switching systems for Boeing McDonnell Douglas and their customers.  Switching Units are used to switch the presentation to the flight crew from one radio system to another, from one navigational system to another and to switch instruments in the aircraft from one set to another.  The Switching Units were designed and have been manufactured since the 1960's to meet Boeing McDonnell Douglas and FAA requirements.  Most Boeing McDonnell Douglas commercial aircraft are equipped with one or more Butler National Switching Units.
Marketing is accomplished directly with Boeing McDonnell Douglas.  Competition is minimal.  However, sales are directly related to the production of Boeing McDonnell Douglas DC-9, DC-10, DC9/80, MD-80, MD-90, MD-11 and KC-10 tanker aircraft.  Avionics provides new replacement units and overhaul service directly to the major airlines using the aircraft manufactured by McDonnell Douglas.
We have in the ordinary course of business received purchase orders from the commercial airlines and aircraft avionics upgrade suppliers for products with scheduled shipment dates into fiscal year 2007.  However, should these customers financially reorganize or for some other reason not accept shipment against these orders, we could suffer significant loss of revenue in the avionics division.Defense Contracting and Electronics:  We supply defense and commercial aviation products to the various agencies of the Department of Defense and the Federal Aviation Administration.   We sell these products directly to the United States and/or to other Department of State approved governments, government contractors and suppliers.
Engineering design and specialized manufacturing solutions are provided to maintain and update classic military and commercial aviation systems.  In general, we provide our customers the opportunity to update or extend the useful life of products with older components and technology. These products include Gun Control Units (GCU) for the Apache Helicopter and other weapon products, including the Hangfire Override Modules (HOM) for all Boeing derived Chain-Gun® cannons, and various weapon-related firing controls, cabling, and test equipment.  We have upgraded the design of the GCU and expect to expand sales of the Butler National upgraded units to maintain the Apache fleet and other military aircraft.  We have firm sales orders for these products.Boeing 747 Classic Aircraft:  We worked with Honeywell to design the Butler National Transient Suppression Device ("TSD").  The TSD is approved and certified by the Federal Aviation Administration ("FAA") under STC number ST00846SE and is owned, manufactured and marketed by us.  We sell TSDs to owners and/or operators of Boeing 747 Classic aircraft with a Honeywell Fuel Quantity Indicating System ("FQIS").  The TSD is one solution to the requirements of AD 98-20-40 issued by the FAA to protect the aircraft fuel tanks from hazardous energy levels introduced through the wiring of the FQIS.  As a result of the TWA 800 accident in July 1996, the industry had until November 3, 2001 to comply with AD 98-20-40.  All aircraft returned to service after that date must be in compliance.
There are approximately 400 Boeing 747 Classic aircraft with Honeywell FQIS.  The actual number of aircraft needing our TSD is hard to estimate because a number of these aircraft will be permanently removed from service, a number will have the FQIS system converted from the Honeywell system to a BF Goodrich digital or Smiths digital system, and a number will be protected by a Boeing/BF Goodrich protection device.  We believe that all of the other protection alternatives are more expensive than and not as easy to install as our TSD.
We started shipments of the Butler National Boeing 747 TSD in April 2001.  We continue to provide TSD protection for Boeing 747 Classic aircraft being returned to service.  The FAA required that the TSD be returned to us for inspection after six (6) years or thirty-thousand (30,000) hours in service.  Our first installation was January 2001.  Some units have completed the first inspection.  The majority of these sales are to international customers.Boeing 737 Classic Aircraft:  We designed the Butler National Transient Suppression Device ("TSD") for Boeing 737 Classic Aircraft.  On January 14, 2003, the B737 TSD was approved and certified by the Federal Aviation Administration ("FAA") under STC number ST01160SE.  TSDs are sold to the owners and/or operators of Boeing 737 Classic aircraft with an analog Fuel Quantity Indicating System ("FQIS").  The TSD is one solution to the requirements of AD 99-03-04 issued by the FAA to protect the aircraft fuel tanks from hazardous energy levels introduced through the wiring of the FQIS.  As a result of the TWA 800 accident in July 1996, the industry had until March 9, 2003 to comply with AD 99-03-04.  All aircraft returned to service after that date must be in compliance.
There are approximately 1,000 Boeing 737 Classic aircraft in this market with an analog FQIS.  Estimating the volume of Butler National 737 TSD sales is subject to the same contingencies as described above under the Boeing 747 TSD.  We believe that some of our competitor's protection alternatives are more expensive and not as easy to install as our TSD.
We started shipping the Butler National Boeing 737 TSD in February 2003.  We continue to provide TSD protection for the Boeing 737 Classic aircraft being returned to service.  The FAA required that the TSD be returned to us for inspection after six (6) years or thirty-thousand (30,000) hours in service.  Our first installation was January 2001.  Some units have completed the first inspection.  The majority of these sales are to international customers.SFAR-88, Fuel System Safety:  The FAA issued a Special Federal Aviation Requirement ("SFAR") No. 88 titled "Fuel Tank System Fault Tolerance Evaluation Requirements" applicable to turbine-powered aircraft certified to carry 30 or more passengers or a certified payload capacity of 7,500 pounds or more.  When fully implemented by the FAA, we believe that SFAR-88 may open a market for Butler National designed TSD products to many more aircraft than the Boeing 747 and 737 Classics.  The compliance date for each operator to have a plan for meeting the requirements of the SFAR was December 6, 2002 and has been extended to November 2008.
SFAR-88 requires protection for all systems that might provide an ignition source to the aircraft fuel tank system.  In general, we believe that this requirement may require protective devices on other aircraft parts using electrical power in the fuel system such as fuel pumps, fuel valves, float switches, etc.  To address this market, in July 2001, we applied to the FAA for an STC for a Ground Fault Interruption device ("GFI") for various Boeing aircraft.  We are actively pursuing the completion of the STC.  The Butler National GFI product line will be sensitive to unusual power requirements of the electrical systems related to the fuel system.  We have not completed a full evaluation of the scope and size of this market but our initial estimates are that approximately 100,000 units will be sold to satisfy this requirement.  We believe that there are four or five suppliers for this market.
Gaming
BNSC is engaged in the business of providing management services to Indian tribes in connection with the Indian Gaming Regulatory Act of 1988.  We have three management agreements; however, the performance of these agreements is contingent upon and subject to approval by the Secretary of Interior, Bureau of Indian Affairs, National Indian Gaming Commission and the appropriate state, if required.  Also, we have signed consulting engagement letters with two tribes to study and develop plans for Indian gaming.
The "Management Agreement" between the Indian tribe (the owner and operator) and Butler National Service Corporation (the manager) is the final approval document issued by the National Indian Gaming Commission ("NIGC") before Indian gaming is authorized.  The Management Agreement or Contract is authorized and approved by the NIGC pursuant to the Indian Gaming Regulatory Act of 1988, PL 100-497, 102 Stat. 2467,25 U.S.C. 2701-2721 (sometimes referred to as "IGRA").  Before the Management Agreement is approved by the NIGC, all required contracts with other parties must be approved; including, (a) the compact with the state for Class III gaming, if applicable, (b) compliance with the requirements of the National Environmental Protection Agency ("NEPA"), (c) a Tribal Gaming Ordinance approved by the NIGC, and (d) Indian land ownership or leases, if applicable approved by the Bureau of Indian Affairs ("BIA"). 
The management consulting engagement letters provide for advances of funds to the Indian tribes by BNSC for professional services, fees, licenses, travel, administrative costs, documentation, procedure manuals, purchases of property and equipment and other costs related to the approval and opening of an establishment.  These advances are considered to be a receivable from the Tribe and to be repaid by the Tribe from the funding to open the enterprise. The ability to collect these advances depends upon the opening of a gaming establishment or by the liquidation of acquired property.  If the collection and/or liquidation efforts are not successful, BNSC may suffer a significant loss of asset value.
Butler National Service Corporation is in the process of obtaining the required licenses for the opening and operation of its potential gaming establishments.  BNSC follows the law and regulations of the Indian Gaming Regulatory Act of 1988 and the state laws as they may apply.  Princess Maria Casino: We have a Management Agreement with the Miami Tribe to provide management services.  On July 9, 1992, the Tribe requested a compact with the State of Kansas for Class III Indian gaming, on Indian land, known as the Maria Christiana Miami Reserve No. 35, located in Miami County, Kansas.  Under the Management Agreement, as approved by the NIGC on January 7, 2000, the Company, as manager, is to receive a 30% share of the profits during the five year term and reimbursement of development costs.
The Miami Tribe's 1992 compact was the subject of a lawsuit filed in February 1993, in the Federal District Court, by the Miami Tribe, alleging the failure to negotiate a compact in good faith by the State of Kansas.  The United States District Court dismissed the Miami Tribe's suit against the State of Kansas, citing the United States Supreme Court's ruling in Seminole v. State of Florida.  The Supreme Court ruled that the "failure to negotiate" provision of the IGRA did not allow an Indian tribe to compel a state by litigation to negotiate a compact.
In February 1993, then Kansas Governor Finney requested a determination of the suitability of the Miami Indian land for Indian Gaming, under the IGRA, from the Bureau of Indian Affairs (the "BIA").  In May 1994, the NIGC again requested the same determination.  Finally in May 1995, an Associate Solicitor within the BIA issued an opinion letter stating that the Miami Tribe has not established jurisdiction over the Miami land in Kansas.  This was the first definitive statement received from the central office of the BIA in three years.  That opinion was contrary to a September 1994 opinion of the Tulsa Field Solicitor, in an Indian probate, stating that the Miami Tribe has jurisdiction over the Miami Indian land in Kansas.  On July 11, 1995, the U.S. Department of Justice issued a letter to the Associate Solicitor expressing concern about the conclusions reached, based upon the analysis of the case.
The Miami Tribe challenged this opinion in Federal Court.  To prove and protect the sovereignty of the Miami Tribe, and other Indian tribes, relating to their lands, on April 11, 1996, the Court ruled that the Miami Tribe did not have jurisdiction because the BIA had not approved the Tribal membership of the Princess Maria heirs, at the time the management agreement was submitted; therefore, the Court ordered that the NIGC's determination (that Reserve No. 35 is not "Indian land suitable for gaming", pursuant to IGRA) was affirmed.  However, the Court noted in its ruling that nothing precludes the Tribe from resubmitting its management agreement to the NIGC, along with evidence of the current owners' consent, and newly adopted tribal amendments.  On February 22, 1996, the BIA approved the Miami Tribe's constitution and the membership of the heirs.  The Tribe resubmitted the management agreement.  Although the Court noted that the Tribe could resubmit the management agreement, the Court did not pass on whether or not a new submission will obtain approval.
The Tribe resubmitted the management agreement and land question to the NIGC in June 1996.  In July 1996, the NIGC again requested an opinion from the BIA.  On July 23, 1997, the Tribe and the Company were notified that the BIA had again determined that the land was not suitable for gaming, for political policy reasons, without consideration of the membership in the Miami Tribe or recent case law, and the NIGC had to again deny the management agreement.  The Tribe filed a suit in the United States District Court in Kansas City, Kansas.  On May 15, 1998, the Court determined that the land may be suitable for gaming and remanded the case to the NIGC for the documentation.  Therefore, even though the Company and the Tribe believe the BIA and NIGC will agree that the land is "Indian land", and in compliance with all laws and regulations, for a variety of reasons, there is no assurance that the Management Agreement will be approved.  
A lawsuit was filed in the United States District Court for the District of Kansas by the State of Kansas against us, the United States, the Business Committee members of the Miami Tribe and others on October 14, 1999, challenging the determination by the NIGC and the United States District Court for the District of Kansas that the Miami Princess Maria Reserve No. 35 was Indian Land.  The State of Kansas requested an order by the Court preventing further development of gaming on the Indian land.
On June 25, 2002, the question in the case was been remanded to the NIGC for further review.  All of the defendants believe the determination of Indian land is a power reserved for the United States by the Constitution of the United States.  The NIGC has not made a further determination on the question.  The Miami Tribe expects to eventually receive a favorable determination.
The total advances and investment related to the Princess Maria at April 30, 2006, were $888,802.  This amount is net of a reserve of $1,413,511.Stables Bingo Casino:  We have a signed Management Agreement with the Miami and Modoc Tribes.  A Class III Indian Gaming Compact for a joint venture by the Miami and Modoc Tribes, both of Oklahoma, has been approved by the State of Oklahoma and by the Assistant Secretary, Bureau of Indian Affairs for the U.S. Department of the Interior.  The Compact was published in the Federal Register on February 6, 1996, and is, therefore, deemed effective. The Compact authorizes Class III (Off-Track Betting "OTB") along with Class II (high stakes bingo) at a site within the boundaries of the City of Miami, Oklahoma.  The Stables opened in September 1998.
We are providing consulting and construction management services in the development of the facility and manage the joint-venture operation for the tribes.  The Stables facility was expanded in April 2002 to approximately 30,000 square feet and is located directly south of the Modoc Tribal Headquarters building in Miami, Oklahoma.  The complex contains Class III off-track betting windows, Class III gaming machines, Class III table games, Class III bingo machines, a bar and a restaurant.  Our Management Agreement was approved by the NIGC on January 14, 1997.  The Oklahoma Class III compact for off-track betting was approved in 1996 and the Oklahoma Class III compact for full casino gaming was approved June 1, 2005.  Under the Management Agreement, BNSC received a 30% share of the profits and reimbursement of development costs.  This management agreement expired in September 2003.  The Miami and the Modoc Tribes have agreed to amend the agreement to extend the expiration date through September 2008 and to reduce the management fee to 20% of the profits.  At the end of the initial contract term, the Stables had fully paid all advances by Butler National related to the construction of the Stables.  The amendment to the agreement was approved by the NIGC.Shawnee Reserve No. 206:  In 1992, we signed a consulting agreement and have maintained a business relationship with approximately seventy Indian and non-Indian heirs (the "Owners") of the Newton McNeer Shawnee Reserve No. 206 ("Shawnee Reserve No. 206").  This relationship includes advances for assistance in the defense of the property against adverse possession (by one family member) in exchange for being named the manager of any Indian gaming enterprises that may be established on the land.  As a result of our assistance, the Owners are in the process of becoming the undisputed beneficial owners of approximately 72 acres of the Shawnee Reserve No. 206, as ordered by the United States District Court for the District of Kansas.  We purchased and currently own an additional 4 acres contiguous to the Indian land providing access.
Shawnee Reserve No. 206 has been a part of the Shawnee Reservation in Kansas Territory since 1831 and was reserved as Indian land and not a part of the State of Kansas, when Kansas became a state in 1861.  The Indian land is approximately 25 miles southwest from downtown Kansas City, Missouri.
We believe that there may be a significant opportunity for Indian gaming on the Shawnee Reserve No. 206.  No agreements have been approved by the BIA, or the NIGC, or any other regulatory authority.  There can be no assurance that these or future agreements will be approved nor that any Indian gaming will ever be established on the Shawnee Reserve, or that we will be the Management Company.
The total advances and investment related to Shawnee Reserve No. 206 at April 30, 2006, was $805,248.  This amount is net of a reserve of $1,049,222.Modoc Casino:  We signed a consulting agreement with the Modoc Tribe on April 21, 1993.  As a part of this project, we have a management agreement with the Modoc Tribe to construct and operate an Indian gaming facility on Modoc Reservation lands in Eastern Oklahoma.  The Management Agreement was filed with the NIGC on June 7, 1994 for review and approved on July 11, 1997.  The Tribe and the Company have not determined a schedule for this project.
The total advances and investment related to the Modoc Tribe at April 30, 2006, was $112,501.  This amount is net of a reserve of $373,271.Associated risks:The associated risk of Indian gaming is that a management agreement may not be approved and that the liquidation of the assets may not recover enough funds to cover our advances.  We have been involved in this business since 1991 and have experienced significant project slow downs and holds but have not had any project terminate by the federal courts or regulatory agencies.  All Management Agreements submitted for approval have been approved by the NIGC.  There can be no assurance that current management agreements will continue in force, future management agreements will be approved and that the U.S. Congress will not outlaw Indian gaming.  Should any of these events occur, we would choose alternative uses of the Indian land in cooperation with the Tribes to recover the advances.  There is no assurance that all of the advances could be recovered.Kansas Owned Gaming (KOG):  During the 2003 Kansas legislative session we proposed to the Governor, the Kansas Senate and the Kansas House the possibility of state owned casino gaming.  The proposed model is structured like the Indian gaming model placing the State of Kansas in the same sovereign position as an Indian Tribe.  The model plan is the state would receive a minimum of 70% of the profits and the management company would be limited to 30%.  We expect legislation regarding the state owned concept for gaming to be reconsidered in Kansas in the 2007 session.  We plan to propose to be the manager of one or more of the casinos.  However, there is no assurance that the State of Kansas will adopt gaming legislation or that BNSC will be selected as the manager.
Services
SCADA Systems and Monitoring Services:  BNS is engaged in the sale of monitoring and control equipment and the sale of monitoring services for water and wastewater remote pumping stations through electronic surveillance by radio or telephone.  BNS contracts with government and private owners of water and wastewater pumping stations to provide both monitoring and preventive maintenance services for our customers.  A high percentage of BNS business comes from municipally owned pumping stations.  BNS is currently soliciting business only in Florida.  While we have exposure to competitive forces in the monitoring and preventive maintenance business, management believes the competition is limited in the Florida area.
Corporate
Corporate / Professional Services:  We provide licensed architectural services through BCS Design, Inc.  These services include commercial and industrial building design and graphic representation.  We have expanded this segment to include aviation-related engineering consulting services and operate as the Butler National Aircraft Certification Center.
Through BCS Design, Inc. we are developing, for sale, single family housing units in Junction City, Kansas.  The city is adjacent to the U.S. Army post at Fort Riley, Kansas.  Construction started on eight units in July 2006.  Land has been purchased for an additional fourteen units.  The expected selling price for these units may range from $150,000 to $180,000.  There can be no assurance that all units will be built or sold for these estimated prices.Patents and Trademarks:  We have no patents, trademarks, licenses, franchises, or concessions that need to be held to do business other than the FAA, PMA and Repair Station licenses.  We maintain certain airframe alteration certificates, commonly referred to as Supplemental Type Certificates ("STC's"), issued to us by the FAA, for the Aircraft Modification and Avionics businesses.  The STC, PMA and Repair Station licenses are not patents or trademarks.  The FAA will issue an STC to anyone, provided that the person or entity documents and demonstrates to the FAA that a change to an aircraft configuration does not endanger the safety of flight.  The PMA and Repair Station licenses are available to any person or entity, provided that the person or entity maintains the appropriate documentation and follows the appropriate manufacturing, repair and/or service procedures.  The FAA requires the aircraft owner to have the STC document in the aircraft log after each modification is complete.Seasonality:  Our business is generally not seasonal.Customer Arrangements:  Most of our products are custom-made.  Except in isolated situations no special inventory-storage arrangements, merchandise return and allowance policies, or extended payment practices are involved in our business.  We are not dependent upon any single customer except for Switching Units and defense products.  Switching Units are sold to various Boeing McDonnell Douglas and Douglas Aircraft Company customers.  
We require deposits from our customers for aircraft modifications.  We generally collect full payment for services before the modified aircraft are released.  Long term projects, such as cargo door modifications, require interim payments from the customer.
|Backlog:  Our backlog as of April 30, 2006, 2005, and 2004, was as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Our backlog as of July 7, 2006 totaled $15,812,871; consisting of $7,835,952, $5,721,834, $974,085 and $1,281,000 respectively, for Aircraft Modifications, Avionics, Monitoring Services, and Corporate / Professional Services  The backlog includes firm pending and contract orders, which may not be completed within the next fiscal year.  This is standard for the industry in which modifications services and related contracts may take several months or years to complete.  Such actions force backlog as additional customers request modifications, but must wait for other projects to be completed.  There can be no assurance that all orders will be completed or that some may ever commence.Employees:  We employed 82 employees on April 30, 2006 compared to 94 employees on April 30, 2005, and 71 employees on April 30, 2004. As of July 7, 2006, 86 people were employed.  None of our employees are subject to any collective bargaining agreements.Financial Information about Foreign and Domestic Operations, and Export Sales:Information with respect to Domestic Operations may be found at Note 10 of Notes to Consolidated Financial Statements.  International sales are made through authorized installation centers and direct to foreign customers to be completed and included in domestic operations.  The export sales consisted of approximately $973,000 in 2006, $140,000 in 2005 and $515,000 in 2004.Item 1A.  RISK FACTORS
CAUTIONARY STATEMENTS FOR PURPOSE OF THE "SAFE HARBOR" PROVISIONS OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995The Company desires to take advantage of the new "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995 and is filing this exhibit in order to do so.  The following important factors, among others, could affect the Company's actual results and could cause such results to differ materially from those expressed in the Company's forward-looking statements: General Governmental Regulations of Financial Reporting:  The Company reports information to its shareholders and the general public pursuant to the regulations of various Federal and State Commissions and Agencies.  These regulations require conformance by the Company to Generally Accepted Accounting Principles, to pronouncements of the Financial Accounting Standards Board, and to accounting and reporting directives issued by the commissions and agencies.  The political and regulatory environment in which the Company is operating is dynamic and rapidly changing.  Adoption and/or changes in regulations defining accounting procedures or reporting requirements could have a materially adverse effect on the Company.  The Company depends upon the financial institutions and capital markets for financing to continue operations and to finance and develop new opportunities.General Governmental Regulation of Gaming:  Operations - The Company's approved and proposed gaming management operations will be subject to extensive gaming laws and regulations, many of which were recently adopted and have not been the subject of definitive interpretations and are still subject to proposed amendments and regulation.  The political and regulatory environment in which the Company is and will be operating, with respect to gaming activities on both non-Indian and Indian land, is dynamic and rapidly changing.  Adoption and/or changes in gaming laws and regulations could have a materially adverse effect on the Company.  Interference with the execution of the steps defined by the gaming laws and regulations by interested third parties, although not included by the regulations, may significantly slow the approval process.Fuel and Energy Costs: Our business depends on use of the airplane for business transportation, freight transportation, and many special mission applications.  Should our customers be unable to purchase fuel and energy and/or be unable to pass on disproportionate costs to their customers, the use of business and military aircraft by our customers may be curtailed.  The value of the airplane related assets would decrease and the revenues related to the airplane equipment and modifications would decrease.  These events could have a material adverse effect on our Company.Key Personnel:  The Company's inability to retain key personnel may be critical to the Company's ability to achieve its objectives.  Key personnel are particularly important in maintaining relationships with Indian Tribes and with the operations licensed by the FAA.  Loss of any such personnel could have a materially adverse effect on the Company.
We are highly dependent on Clark Stewart, our CEO and President.  The loss of Mr. Stewart, whose knowledge, leadership and technical expertise upon which we rely, would harm our ability to execute our business plan.
Our success depends heavily upon the continued contributions of Clark Stewart, whose knowledge, leadership and technical expertise would be difficult to replace, and on our ability to attract and retain experienced professional staff.  We entered into an employment agreement with Mr. Stewart; however, maintain no key person insurance on Mr. Stewart.  If we were to lose his services, our ability to execute our business plan would be harmed and we may be forced to cease operations until such time as we could hire a suitable replacement for Mr. Stewart.Competition:Increased competition, including the entry of new competitors, the introduction of new products by new and existing competitors, or price competition, could have a materially adverse effect on the Company. Additionally, because of the rapid rate at which the gaming industry has expanded and continues to expand, the gaming industry may be at risk of market saturation, both as to specific areas and generally.  Overbuilding of gaming facilities at particular sites chosen by the Company may have a material adverse effect on the Company's ability to compete and on the Company's operations. Major Customers:The termination of contracts with major customers or renegotiation of these contracts at less cost-effective terms, could have a materially adverse effect on the Company.  Irregularities in financial accounting procedures, financial reporting requirements and regulatory reporting requirements could cause major customers to become unstable and be unable to complete business transactions which could have a materially adverse effect on the Company.Product Development:Difficulties or delays in the development, production, testing and marketing of products, could have a materially adverse effect on the Company.  The Company's aviation business is subject, in part, to regulatory procedures and administration enacted by and/or administered by the FAA. Accordingly, the Company's business may be adversely affected in the event the Company is unable to comply with such regulations relative to its current products and/or if any new products and/or services to be offered by the Company can or may not be formally approved by such agency.  Moreover, the Company's proposed new aviation modification products will depend upon the issuance by the FAA of a supplemental type certificate with related parts manufacturing authority and repair station license, the issuance of which no assurances can be given.Adverse Actions:Adverse actions by regulators, customers, competitors and/or professionals engaged to regulate or to serve the Company may cause project delays and excessive administrative costs not controllable by the Company.Administrative Expenditures:Higher service, administrative or general expenses occasioned by the need for additional legal, consulting, advertising, marketing, or administrative expenditures may decrease income to be recognized by the Company. Low-Priced Penny Stock:  Because our common stock is deemed a low-priced "Penny" stock, an investment in our common stock should be considered high risk and subject to marketability restrictions.
Since our common stock is a penny stock, as defined in Rule 3a51-1 under the Securities Exchange Act, it will be more difficult for investors to liquidate their investment even if and when a market develops for the common stock.  Until the trading price of the common stock rises above $5.00 per share, if ever, trading in the common stock is subject to the penny stock rules of the Securities Exchange Act specified in rules 15g-1 through 15g-10.  Those rules require broker-dealers, before effecting transactions in any penny stock, to:


Deliver to the customer, and obtain a written receipt for, a disclosure document;
Disclose certain price information about the stock;
Disclose the amount of compensation received by the broker-dealer or any associated person of the broker-dealer;
Send monthly statements to customers with market and price information about the penny stock; and
In some circumstances, approve the purchaser's account under certain standards and deliver written statements to the customer with information specified in the rules.Consequently, the penny stock rules may restrict the ability or willingness of broker-dealers to sell the common stock and may affect the ability of holders to sell their common stock in the secondary market and the price at which such holders can sell any such securities.  These additional procedures could also limit our ability to raise additional capital in the future.
Regulation Under Federal Aviation Administration:  Our Avionics and Aircraft Modifications segments are subject to regulation by the Federal Aviation Administration ("FAA").  We manufacture products and parts under FAA Parts Manufacturing Authority (PMA) requiring qualification and traceability of all materials and vendors used by us.  We make aircraft modifications pursuant to the authority granted by Supplemental Type Certificates issued by the FAA.  We repair aircraft parts pursuant to the authority granted by our FAA Authorized Repair Station.  Violation or changes to FAA regulations could be detrimental to our operation in these business segments.Licensing and Regulation under Federal Indian Law:  Before commencing gaming operations (Class II or Class III) on Indian Land, we must obtain the approval of various regulatory entities.  Gaming on Indian land is extensively regulated by Federal, State and Tribal governments and authorities.  Regulatory changes could limit or otherwise materially affect the types of gaming that may be conducted on Indian Land.  All aspects of our proposed business operations on Indian Lands are subject to approval, regulation and oversight by the Bureau of Indian Affairs ("BIA"), the Secretary of the United States Department of the Interior ("Secretary"), and the National Indian Gaming Commission ("NIGC").  Our management of Class III gaming operations is also subject to approval of a Class III Gaming Compact between the Indian Tribe and the respective state.   Failure to comply with applicable laws or regulations, whether Federal, State or Tribal, could result in, among other things, the termination of any management agreements which would have a material adverse effect on us.  Management agreement terms are also regulated by the Indian Gaming Regulatory Act ("IGRA"), which restricts initial terms to five years and management fees to 30% of the net profits of the casino, except in certain circumstances where the term may be extended to seven years and the management fee increased to 40%.  Management agreements with Indian Tribes will not be approved by the NIGC unless, among other things, background checks of the directors and officers of the manager and its ten largest holders of capital stock have been satisfactorily completed.  We will also be required to comply with background checks as specified in Tribal-State Compacts before we can manage gaming operations on Indian land.  Background checks by the NIGC may take up to 180 days and may be extended to 270 days.  There can be no assurance that we would continue to be successful in obtaining the necessary regulatory approvals for our proposed gaming operations on a timely basis, or at all.Licensing and Regulation under State of Kansas Law: Our present and future shareholders are and will continue to be subject to review by regulatory agencies.  In connection with the our proposed operation of a Class III  Indian casino in the territorial boundaries of the State of Kansas, the Company, the appropriate Indian Tribe and the key personnel of all entities may be required to hold Class III licenses approved in the respective state prior to conducting operations.  The failure of the Company or the key personnel to obtain or retain a license in these states could have a material adverse effect on the Company or on its ability to obtain or retain Class III licenses in other jurisdictions. Each such State Gaming Agency has broad discretion in granting, renewing and revoking licenses. Obtaining such licenses and approvals will be time consuming and cannot be assured. The State of Kansas has approved pari-mutuel dog and/or horse racing for non-Indian organizations.  The State of Kansas operates lottery and keno games for the benefit of the State.  There is no assurance that a Tribal/State Compact between the Tribes and the State of Kansas can be completed.  If the Compact is not approved, there could be a material adverse effect on our plans for Class III gaming within the territorial boundaries of Kansas.
As a condition to obtaining and maintaining our Oklahoma Class III license or any other Class III license, we must submit detailed financial and other reports to the Indian Tribe and the respective federal and state regulatory Agencies ("the Agency").  Any person owning or acquiring 5% or more of the Common Stock of the Company must be found suitable by one or more of the agencies or the Indian Tribes ("the Interest").  Any Agency has the authority to require a finding of suitability with respect to any shareholder regardless of the percentage of ownership.  If found unsuitable by any Agency or the Indian Tribe, the shareholder must offer all of the Ownership Interest in Company stock held by such shareholder to the Company for cash at the current market bid price less a fifteen percent (15%) administrative charge and the Company must purchase such Interest within ten days of the offer.  The shareholder is required to pay all costs of investigation with respect to a determination of his/her suitability.  In addition, regardless of ownership, each member of the board of directors and certain officers of the Company are subject to a finding of suitability by any Agency and the Indian Tribe.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             

|Item 2.  PROPERTIES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
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|Our corporate headquarters are located in a 9,000 square foot owned facility for office and storage space at 19920 West 161st Street, in Olathe, Kansas.  
Our Company's Aircraft Modifications Division is located at 714 North Oliver Road, Newton, Kansas, in a 45,000 square foot leased facility of hangar and office space at the municipal airport in Newton, Kansas, at an annual rent of approximately $145,000.    
Butler National Aircraft Certification Center is located at One Aero Plaza, New Century, Kansas in a 1,000 square foot plus three hangar spaces leased facility at the New Century Airport in New Century, Kansas, at an annual rent of approximately $44,760.
Butler National Services, Inc. has its principal offices at 2772 NW 31st Ave, Ft. Lauderdale, Florida at an annual rent of approximately $35,623.  
Butler National Corporation has its principal offices and manufacturing operations at 4654 South Ash Ave, Tempe, Arizona in a 16,110 square foot owned facility.
These facilities are adequate for current and anticipated operations.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Item 3.  LEGAL PROCEEDINGS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|A lawsuit was filed in the United States District Court for the District of Kansas by the State of Kansas against us, the United States, the Business Committee members of the Miami Tribe and others on October 14, 1999, challenging the determination by the NIGC and the United States District Court for the District of Kansas that the Miami Princess Maria Reserve No. 35 is Indian Land for the purposes of gaming under the Indian Gaming Regulatory Act.  The State of Kansas requested an order by the Court preventing further development of gaming on the Indian land.
The question in the case has been remanded to the NIGC for further review.  The BIA has issued a negative opinion concerning jurisdiction over the land.  The NIGC has not made a further determination on the question.  The Miami Tribe expects to eventually receive a favorable determination.  We cannot reliably predict the outcome of the case.
Our subsidiary, Avcon Industries, Inc. filed a lawsuit in Harvey County, Kansas District Court for breach of contract to foreclose on a mechanic's lien on an airplane that Avcon performed maintenance.  Avcon has claimed damages in excess of $83,395 plus reasonable storage fees.  1st Source Bank, a lending institution, possesses an indirect security interest in the airplane and has alleged a cross-claim against Avcon for breach of verbal contract and promissory estoppel.  1st Source Bank alleges that Avcon has breached an agreement with 1st Source Bank to purchase the airplane.  1st Source Bank has alleged damages in excess of $75,000.  1st Source Bank has also alleged it has a priority interest in the airplane.  Avcon vigorously contests the 1st Source Bank allegations and alleged damages.  We cannot reliably predict the outcome of the case.
Avcon Industries, Inc. was sued by Image Products in the New Hanover County, North Carolina General Court of Justice alleging that Image Products was entitled to a $50,000 deposit paid to Avcon Industries, Inc. by TMS Aviation, L.L.C. for a specialized avionics modification.  Avcon filed an action in Harvey County, Kansas to compel arbitration.  The North Carolina lawsuit was dismissed and TMS Aviation agreed to an order compelling arbitration in Newton, Kansas.  Avcon vigorously contests the allegations.  We cannot predict the outcome of this matter.
As of July 7, 2006, there are no other significant known legal proceedings pending against us.  We consider all such unknown proceedings, if any, to be ordinary litigation incident to the character of the business.  We believe that the resolution of any claims will not, individually or in the aggregate, have a material adverse effect on the financial position, results of operations, or liquidity of the Company.
|Item 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|We did not submit any matter to a vote of our security holders during the fourth quarter of fiscal 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|PART II                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Item 5.  MARKET FOR THE REGISTRANT'S COMMON EQUITY, AND RELATED STOCKHOLDER 	MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|COMMON STOCK (BUKS):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|(a)	Market Information:  We were initially listed in the national over-the-counter market in 1969, under the 	symbol "BUTL."  Effective June 8, 1992, the symbol was changed to 'BLNL.'  On February 24, 1994, we were 	listed on the NASDAQ Small Cap Market under the symbol "BUKS."   Our common stock was delisted from 	the small cap category effective January 20, 1999 and is now quoted in the over-the-counter (OTCBB) 	category.  Approximately fifteen (15) market makers offer and trade the stock.  
	The range of the high and low bid prices per share of the our common stock, for fiscal years 2006 and 	2005, as reported by NASDAQ, is set forth below.  Such market quotations reflect intra-dealer prices, without 	retail mark-up, markdown or commissions, and may not necessarily represent actual transactions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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|First Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Second Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Third Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Fourth Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

|Holders:  The approximate number of holders of record of our common stock, as of July 7, 2006, was 2,900.
Dividends:  We have not paid any cash dividends on common stock, and the Board of Directors does not expect to declare any cash dividends in the foreseeable future.
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|SECURITIES CONVERTIBLE TO COMMON STOCK:                                                                                                                                                                                                                   
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|As of July 7, 2006 there were no Convertible Preferred shares or Convertible Debenture notes outstanding.Equity Compensation Plan Information                                                                                                             
|Plan Category                                                                                                                                                                                                                                             
|                                                                                                                                                                                                                                                          
|Equity compensation plans approved by security holders                                                                                                                                                                                                    
|                                                                                                                                                                                                                                                          
|Equity compensation plans not approved by security holders                                                                                                                                                                                                
|Total                                                                                                                                                                                                                                                     
|(1)	See Note 5 to the audited consolidated financial statements for a description of the equity compensation plan for securities remaining available for future issuance.
Changes in Securities, Use of Proceeds and Issuer Purchases of Equity Securities
|Period                                                                                                                                                                                                                                                    
|                                                                                                                                                                                                                                                          
|May 1, 2005 through April 30, 2006                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                          
|Total                                                                                                                                                                                                                                                     
|(1)  Shares that may yet be purchased under the Butler National Board action as reported on Form 8-K by the Company on March 28, 2005.                                                                                                                    

|Item 6.  SELECTED FINANCIAL DATAThe information set forth below should be read in conjunction with "Management's Discussion and Analysis of Results of Operations and Financial Condition" and with the Consolidated Financial Statements and related Notes included elsewhere in the report.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Net Sales                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Net Income (Loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Basic Per Share                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Net Income (Loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Selected Balance Sheet Information                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Total Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Long-term Obligations (excluding current maturities)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Cash dividends declared per common share                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Item 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Fiscal 2006 compared to Fiscal 2005                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Revenue and Operating Profit                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Our sales for fiscal 2006 were $15,307,127, a decrease of 35% from fiscal 2005 sales of $23,389,587.  Our operating profit for 2006 was $936,879, compared to $2,794,034 in 2005.  Discussion of specific changes by segment are as follows.Aircraft Modifications:  Sales from the Aircraft Modifications including modified aircraft decreased 55% from $16,494,103 in fiscal 2005, to $7,580,980 in 2006.  The modifications segment had an operating loss of $303,064 in 2006, compared to income of $2,267,433 in 2005.  Avcon RVSM sales decreased by approximately $10,700,000.  Revenues generated from other modification services increased $2,614,237 in fiscal 2006.  Approval of our application to add additional aircraft models to our RVSM STC has been delayed six to twelve months due to FAA staff availability and a lack of funding to the FAA.  Avcon maintained the trained RVSM production staff in anticipation of the Lear 30 series RVSM approval by the FAA throughout most of the year.    
We believe we will sell and install approximately 50 to 100 Lear 20 & 30 series RVSM kits during the next two years.  In addition to the RVSM sales, we expect to experience some increase in our base modification sales.  As the economy grows aircraft owners may elect to update, modify, and purchase business aircraft.  A shift to business aircraft ownership positively impacts our aircraft modification revenues.  Although we cannot anticipate the future we must always consider the negative impact of items such as the 9-11 event, the related unrest in the world economy, the related increases in fuel prices or general economic downturns.Aircraft Acquisitions and Sales:  There were no aircraft sales in fiscal 2006.  Aircraft sales in fiscal 2005 accounted for $457,876 in revenues.  Operating profits were $70,482 in fiscal 2005.  We acquired three aircraft during fiscal 2006.  Management expects this business segment to increase in future years due to increased aircraft acquisitions, modifications and resale's.  FAA required modifications to the business aircraft fleet may increase customer demand for company owned aircraft.Avionics:  Sales from the Avionics decreased 5.4%, from $3,057,784 in fiscal 2005, to $2,894,086 in fiscal 2006.  This decrease is directly related to sales of defense products.  Operating profits increased from a $143,332 loss in fiscal 2005 to income of $292,761 in fiscal 2006.  This increase in profit was a direct result of a reduction in research and development costs.  Management expects this business segment to significantly increase in future years due to the addition of new fuel system protection devices like the TSD, GFI and other classic aviation defense products.Services - SCADA Systems and Monitoring Services:  Revenue from Monitoring Services increased from $1,220,679 in fiscal 2005 to $1,440,400 in fiscal 2006, an increase of 18%.  During fiscal 2006, we maintained a relatively level volume of long-term contracts with municipalities.  We had increased revenue due to significant hurricane activity during fiscal 2006.  Revenue fluctuates due to the introduction of new products and services and the related installations of these types of products.  Our contracts with our two largest customers have been renewed for fiscal 2007.  An operating profit of $134,109 in Monitoring Services was recorded in fiscal 2006, compared to a fiscal 2005 profit of $13,937.  We believe the service business has had revenue stability over the past few years and we expect this to continue.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Gaming:  Revenues from management services related to gaming increased 18.1% from $1,094,039 in fiscal 2005, to $1,292,222 in fiscal 2006.  The increase is related to the approval of Class III casino gaming in Oklahoma.
We have advanced and invested a total of $4,718,991 in Indian gaming developments.  We have reserves of $2,912,440, at April 30, 2006 and $2,912,440 at April 30, 2005.  Based on the information available to us we believe that our advances for Indian gaming developments will be totally reimbursed as casinos are opened.  Due to the fact that all of the proposed casinos are involved in legal and governmental actions whose outcome is not certain nor is there any time frame for resolution we believe it is necessary to establish reserves against the advances.  The reserve amount is an estimate of the value we would receive if Tribal casinos were not opened and we were forced to liquidate the assets that we have acquired with our advances.  These assets were intended to be used with Tribal casinos and consist of the purchase of land and land improvements.  The land purchases are located adjacent to residential developments.  We believe that these tracts could be developed and sold for residential and commercial use to recover advances if the gaming enterprises do not open. 
In the years ended April 30, 2004 through 2006 there has been no change in reserves.  We determine annually the amount of any increase in reserves based on our determination of the fair value of assets acquired by our advances for Indian developments.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Corporate / Professional Services:  These services include the architectural services of BCS Design, Inc., arrangements for financing, and on site contract management of gaming establishments and engineering services.  Professional Services were $2,099,438 in fiscal 2006 and $1,065,106 in fiscal 2005.  The revenue from buildings completed during fiscal 2006 was $1,552,297 and the related costs were $1,513,153.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Selling General and AdministrativeExpenses were $3,517,125, or 23.0% of revenues, in fiscal 2006, and $4,161,755, or 17.8% of revenue in fiscal 2005.  Sales, General and Administrative costs were reduced by approximately $645,000 in fiscal year 2006 compared to fiscal year 2005.  During fiscal year 2006, we reduced the level of legal expenditures related to Indian and Kansas Owned Gaming by approximately $281,000.  As a result of the decline in sales activity and increased fuel costs, we reduced our aircraft and auto expenses related to sales promotion and administration by approximately $525,000.  Smaller decreases were made in employee relations $15,000 and office expenses $35,000.  We increased personnel costs related to our engineering staff performance incentive pay by approximately $155,000 and regulatory compliance requirements costs for professional service and travel cost by approximately $84,000.
In an effort to control our insurance costs and maintain quality health care coverage for our employees our health insurance policy became self funded on April 1, 2006, as the Butler National Corporation Employee Health Care Plan.  The Plan has contracted with a managed care network of medical providers whose members have agreed to charge the Plan reduced or discounted charges for covered services provided to our employees and their families.  Although our employees have the freedom to choose to receive care from any Physician, Hospital or other medical care provider, as a general rule the amount or percentage of an otherwise covered expense payable by the Plan will vary, depending on whether the provider from whom the employee receives care is a member of the Plan's PPO network(s).  Generally, the Plan will pay a higher percentage of a covered expense if the care is received by a network provider.  The Plan Document, through a third party administrator controls all determinations related to coverage.  
As sales continue to grow we would anticipate overhead expenses to increase.  We continue to monitor and evaluate our overhead expenses in order to efficiently manage our operations.
Other Income (Expense)
Other expense increased from $297,901 in fiscal 2005 to $499,018 in fiscal 2006.  This interest expense increased by $206,360 as a result of financing additional inventory and asset purchases.  Fiscal 2005 compared to Fiscal 2004Our sales for fiscal 2005 were $23,389,587, an increase of 131% from fiscal 2004 sales of $10,121,948.  Our operating profit for 2005 was $2,794,034, compared to a $907,571 gain in 2004.  Discussion of specific changes by operation follows.Aircraft Modifications:  Sales from the Aircraft Modifications business segment including modified aircraft increased 188% from $5,609,744 in fiscal 2004, to $16,494,103 in 2005.  Increased revenues for the Aircraft Modification were attributed to the FAA requirement for Reduced Vertical Separation Minimums (RVSM).  Avcon received the STC for the Lear 20 series RVSM in April 2004.  Revenues generated from other modification services continue to generate consistent revenues.  The modifications segment had operating income of $2,267,433 in 2005, compared to income of $548,107 in 2004.  Included in operating expenses are engineering and management charges of $322,773 related to STC development projects.
In looking forward to fiscal 2006 we anticipate continued revenues relating to RVSM installation.  We have projected the installation and sales of approximately 50 to 100 Lear 20 series and Falcon 20 series RVSM kits during the next two years.  In addition to the RVSM sales, we expect to experience some increase in our base modification sales.  As the economy grows aircraft owners may elect to update, modify, and purchase business aircraft.  A shift to business aircraft ownership directly impacts our aircraft modification revenues.  Although we cannot anticipate the future we must always consider the negative impact of items such as the 9-11 event or economic downturns.Aircraft Acquisitions and Sales:  The Aircraft Sales business segment increased to $457,876 in fiscal 2005.  There were no aircraft sales in 2004.  Operating profits were $70,482.  Management expects this business segment to increase in future years due to increased aircraft acquisitions, modifications and resale's.  FAA required modifications to the business aircraft fleet may increase customer demand for company owned aircraft.Avionics:  Sales from the Avionics business segment increased 74.8%, from $1,749,555 in fiscal 2004, to $3,057,784 in fiscal 2005.  This increase is directly related to sales of defense products.  Operating profits decreased from a $2,566 gain in fiscal 2004 to a loss of $143,332 in fiscal 2005.   This decrease in profit was a direct result of a $161,212 write off in obsolete inventory.  Management expects this business segment to significantly increase in future years due to the addition of new fuel system protection devices like the TSD and classic aviation defense products.Services - SCADA Systems and Monitoring Services:  Revenue from Monitoring Services increased from $1,121,403 in fiscal 2004 to $1,220,679 in fiscal 2005, an increase of 8.9%.  During fiscal 2005, we maintained a relatively level volume of long-term contracts with municipalities.  We had increased revenue due to significant hurricane activity during fiscal 2005.  Revenue fluctuates due to the introduction of new products and services and the related installations of these products.  Our contracts with our two largest customers have been renewed for fiscal 2006.  An operating profit of $13,937 in Monitoring Services was recorded in fiscal 2005, compared to a fiscal 2004 profit of $13,834.
We believe the service business of this segment will continue to grow at a moderate rate.  This segment has experienced general stability over the past few years and we expect this trend to continue.Gaming:  Revenues from management services related to gaming declined 5.2% from $1,154,423 in fiscal 2004, to $1,094,039 in fiscal 2005.  The decrease in revenues was a result of a change in the Management Agreement, with a reduction in management fees from 30% to 20%.  The reduction has been partially offset by the expansion of the Stables.
We have advanced and invested a total of $4,718,991 in Indian gaming developments.  We have reserves of $2,912,440, at April 30, 2005 and $2,712,440 at April 30, 2004.  Based on the information available to us we believe that our advances for Indian gaming developments will be totally reimbursed as casinos are opened.  Due to the fact that all of the proposed casinos are involved in legal and governmental actions whose outcome is not certain nor is there any time frame for resolution we believe it is necessary to establish reserves against the advances.  The reserve amount is an estimate of the value we would receive if a Tribal casino was not opened and we were forced to liquidate the assets that we have acquired with our advances.  These assets were intended to be used with Tribal casinos and consist of the purchase of land, land improvements, professional design fees and other consulting and legal costs related to the development of Indian Gaming facilities.  The land purchases are located adjacent to residential developments.  We believe that these tracts could be developed and sold for residential and commercial use to recover advances if the gaming enterprises do not open.
In the years ended April 30, 2005, 2004 and 2003, we increased reserves by $0, $0 and $200,000 respectively.  We determine annually the amount of any increase in reserves based on our determination of the fair value of assets acquired by our advances for Indian developments.Corporate / Professional Services:  These services include the architectural services of BCS Design, Inc., arrangements for financing, and on site contract management of establishments for Indian tribes and others.  Flight and engineering services are also provided.  Management consulting and professional fees were $1,065,106 in fiscal 2005 and $486,823 in fiscal 2004.  Sales recorded from the development programs related to these services for pass-thru costs were $780,121 for fiscal 2005 and none in 2004.Selling General and Administrative: Expenses were $4,161,755, or 17.8% of revenues, in fiscal 2005, and $2,910,775, or 28.8% of revenue in fiscal 2004.  Business insurance in 2004 was $456,088. In 2005 we experienced a substantial increase of nearly 67% to over $762,273 in business insurance expenses.  In fiscal 2005 it was necessary to increase both our sales and administrative staff to support the growth of our business.  This increase accounts for $509,741 of the additional expenses.  In 2004, our sales per employee were $142,562 compared to $248,825 per employee in 2005, an increase of $106,262 per employee. An additional $44,904 was used to rent additional hangar space to support the growth of our aircraft modification segment. 
As sales continue to grow we would anticipate overhead expenses to increase.  We continue to monitor and evaluate our overhead expenses in order to efficiently manage our operations.Other Income (Expense)
Other expense increased from $162,583 in fiscal 2004 to $297,901 in fiscal 2005.  This interest expense was a result of financing additional inventory and asset purchases.
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     



|Liquidity and Capital Resources
At April 30, 2006, the Company had two lines of credit at the same bank totaling a combined $2,000,000.  The unused lines at April 30, 2006 were $464,892.  These funds are primarily used for the purchase of inventory for the modifications and avionics operations.
We believe both lines of credit will be extended when they are due and do not anticipate the full repayment of these notes in fiscal 2007.  Our first and second lines of credit have been extended to September 2006.  If the Bank were to demand repayment of all notes payable, we currently do not have enough cash to pay off the notes without materially adversely affecting the financial condition of the Company.  These notes are collateralized by the first and second positions on all assets of the Company.
At April 30, 2006 there were several notes collateralized by aircraft security agreements totaling $2,982,831.  These notes were used for the purchase and modifications of these collateralized aircraft.
There are two notes at the same bank totaling $1,210,031 for real estate located in Olathe, Kansas and Tempe, Arizona.  The due dates on these notes are August 2007 and November 2009.
Four notes to the same bank were entered into between March and April 2006 for the purchase of a building and several vacant lots in Junction City, Kansas.  These notes total approximately $378,431.  We plan to begin construction on single-family residences in the summer of 2006.Two notes to the same bank totaling $276,279 are collateralized by the first and second position on all assets of the company.  There are several other notes collateralized by automobiles, equipment, and cash flows from "The Stables" totaling an additional $230,908.  All of these notes are used as capital for our daily business operations.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    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|We are not in default of any of our notes as of July 7, 2006.
We believe that our current banks will provide the necessary capital for our business operations.  However, we continue to maintain contact with other banks that have an interest in funding our working capital needs to continue our growth in operations in 2007 and beyond.
We do not, as of April 30, 2006, have any material commitments for other capital expenditures other than the terms of the Indian Management Agreements should any additional casinos materialize.  We will need additional funds to complete our planned Indian gaming opportunities.  We will use current cash available as well as additional funds, for the start up and construction of gaming facilities.  We anticipate initially obtaining these funds from internally generated working capital and borrowings.  
After a few gaming facilities become operational, gaming operations will generate additional working capital for the start up and construction of other gaming facilities.  We expect that our start up and construction financing of gaming facilities will be replaced by other financial lenders, long term financing through debt issue, or equity issues.Analysis and Discussion of Cash FlowDuring fiscal year 2006 our cash position decreased by approximately $141,400.  The decrease in the cash flow position was attributed to our inventory purchases of approximately $1,821,000.  Aircraft inventory is increased by more than $1,550,000, defense products inventory increased by more than $1,100,000 while aircraft modifications inventory decreased by more than $1,775,000.  The increase in defense inventory is expected to cover approximately six months of defense products production.  We believe all our inventory will be realized in the normal course of business.  Lead-time for the components is dictated by the market place resulting in a build up of inventory to support sales and to avoid halting production because of material shortages.  Included in the capital expenditures was the purchase of a building and land in Junction City, Kansas for development purposes.
Our sources of cash to purchase aircraft and property in Junction City were generated from our financing activities of approximately $832,871.  Our investing activities decreased by $118,406. Revenue Recognition:  We perform aircraft modifications under fixed-price contracts.  Revenues from fixed-price contracts are recognized on the percentage-of-completion method, measured by the direct labor costs incurred compared to total estimated direct labor costs.  Revenue for off the shelf items and aircraft sales is recognized on the date of sale.
Revenue from Avionics are recognized when shipped and payment for materials are due within 30 days of invoicing.  Revenue for SCADA services, Gaming Management, and other Corporate/Professional Services are recognized on a monthly basis as services are rendered.  Payments for these services are received within 30 days of invoicing.  
In regard to warranties and returns, our products are special order and are not suitable for return.  Our products are unique upon installation and tested prior to their release and have been accepted by the customers.  In the rare event of a warranty claim, the claim is processed through the normal course of business; this may include additional charges to the customer.  In our opinion any future warranty work would not be material to the financial statements.Critical Accounting Policies and Estimates:
Bad Debts:  Bad debts are calculated on the historical write-off of bad debts of the individual subsidiaries.  Invoices are considered a bad debt if no payment has been made in the past 90 days.  We review these policies on quarterly basis, and based on these reviews we believe we maintain adequate reserves.  We do not anticipate substantial changes to these estimates in the future.  
Use of Estimates:  The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from those estimates.
Long-lived assets:  Long-lived assets and identifiable intangibles to be held and used are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable.  Impairment is measured by comparing the carrying value of the long-lived asset to the estimated undiscounted future cash flows expected to result from use of the assets and their eventual disposition.  We determined that as of April 30, 2006, there had been no impairment in the carrying value of long-lived assets.
Supplemental Type Certificates: Supplemental Type Certificates (STCs) are authorizations granted by the Federal Aviation Administration (FAA) for specific modification of a certain aircraft.  The STC authorizes us to perform modifications, installations and assemblies on applicable customer-owned aircraft.  Costs incurred to obtain STCs are capitalized and subsequently amortized against revenues being generated from aircraft modifications associated with the STC.  The costs are expensed as services are rendered on each aircraft through costs of sales using the units of production method.  The legal life of an STC is indefinite.  We believe we have enough future sales to fully amortize our STC development costs.
Advances for Indian Gaming Developments:  We are advancing funds for the establishment of Indian gaming.  These funds have been capitalized in accordance with Statements of Financial Accounting Standards (SFAS) 67 "Accounting for Costs and Initial Rental Operations of Real Estate Projects."  Such standard requires costs associated with the acquisition, development, and construction of real estate and real estate-related projects to be capitalized as part of that project.
Our advances represent costs to be reimbursed upon approval of Indian gaming in several locations.  We have agreements in place which require payments to be made to us for the respective projects upon opening of Indian gaming facilities.  Once gaming facilities have gained proper approvals, we plan to enter into a note receivable arrangement with the Tribe to secure reimbursement of advanced funds for that particular project.  
We have advanced and invested a total of $4,718,991 in Indian gaming developments.  We have reserves of $2,912,440, at April 30, 2006 and $2,912,440 at April 30, 2005.  We believe that our advances for Indian gaming developments will be totally reimbursed as casinos are opened.  We believe it is necessary to establish reserves against the advances due to the fact that all of the proposed casinos are involved in legal and governmental actions whose outcome is not certain nor is there any time frame for resolution.  The reserve amount is an estimate of the value we would receive if a Tribal casino was not opened and we were forced to liquidate the assets that we have acquired with our advances.  These assets were intended to be used with Tribal casinos and consist of the purchase of land and land improvements related to the development of Indian Gaming facilities.  We believe that these tracts could be developed and sold for residential and commercial use to recover our advances if the gaming enterprises do not open.
In the years ended April 30, 2005 we increased reserves by $200,000 and did not change the reserves in 2006.  We determine annually the amount of any increase in reserves based on our determination of the fair value of assets acquired by our advances for Indian developments.Changing Prices and InflationWe did experience some pressure from inflation in 2006.  From fiscal year 2005 to fiscal year 2006 we have experienced an increase in airplane and truck operating costs.  This additional cost may not be transferable to our customers resulting in lower income.  We anticipate long-term fuel costs and interest rates to continue to rise in fiscal 2007 and 2008.Off-Balance Sheet Arrangements
We do not have any off-balance sheet arrangements.
|Contractual Obligations:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Tabular Disclosure of Contractual Obligations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             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|Contractual Obligations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 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|Long-Term Debt    Obligations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           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|Capital Lease         Obligations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       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|Operating Lease     Obligations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Purchase                Obligations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Promissory   Notes Payable                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

|Item 7(a).  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Interest Rate Sensitivity                                                                                                                                                                                                                                                                                                           
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|The table below provides information about our other financial instruments that are sensitive to changes in interest rates including debt obligations.
For debt obligations, the table presents principal cash flows and related weighted average interest rates by expected maturity dates.  Weighted average variable rates are based on implied forward rates based upon the rate at the reporting date.

Expected Maturity Date
(Dollars in thousands)

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | 2007  |   | 2008  |   | 2009  |   | 2010  |   | 2011  |   | Total |   | Fair Value
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | - | ----- | - | ----- | - | ----- | - | ----- | - | ----- | - | ----- | - | ----------
|Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |       |   |       |   |       |   |       |   |       |   |       |   |           
|Note receivable:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | $ | 0     | $ | 0     | $ | 0     | $ | 0     | $ | 0     | $ | 0     | $ | 0         
|Variable rate
	Average interest rate                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   | N/A   |   | N/A   |   | N/A   |   | N/A   |   | N/A   |   | N/A   |   | N/A       
|Liabilities                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |       |   |       |   |       |   |       |   |       |   |       |   |           
|Promissory Notes                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | $ | 2,394 | $ | 0     | $ | 0     | $ | 0     | $ | 0     | $ | 2,394 | $ | 2,394     
|Long-term debt:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | $ | 2,376 | $ | 839   | $ | 975   | $ | 20    | $ | 10    | $ | 4,220 | $ | 4,220     
|Variable rate
	Average interest rate                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   | 10.0% |   | 11.0% |   | 11.5% |   | 12.0% |   | 12.5% |   | 11.4% |   | 11.4%     
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |       |   |       |   |       |   |       |   |       |   |       |   |           
|Interest Payments                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |       |   |       |   |       |   |       |   |       |   |       |   |           
|Est. Interest Payments:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | $ | 661   | $ | 203   | $ | 116   | $ | 3     | $ | 1     | $ | 984   |   |           
|Scheduled interest payments are calculated on a fixed rate basis, if known, and the remaining interest will be calculated on the average current rate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Item 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|The Financial Statements of the Registrant are set forth on pages 38 through 56 of this report.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Item 9.  CHANGES IN AND DISAGREEMENTS ON ACCOUNTING AND FINANCIAL DISCLOSURE                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|We have had no changes in or disagreements with the accountants.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Item 9(A).  Controls and Procedures                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|We maintain a set of disclosure controls and procedures designed to ensure that information required to be disclosed in our filings under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission rules and forms.  Our principal executive and financial officers have evaluated our disclosure controls and procedures as of the end of the period covered by this Report on Form 10-K and have determined that such disclosure controls and procedures are effective.Item 9(B).  Other InformationWe believe all material information is reported on Form 8-K reports.

|PART III                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Item 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANTThe names and ages of the directors, their principal occupations for at least the past five years are set forth below, based on information furnished to us by the directors.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Name of Nominee and Director and Age                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Clark D. Stewart 
(66)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|R. Warren Wagoner
(54)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|William E. Logan
(68)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|David B. Hayden
(60)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|The executive officers of the Company are elected each year at the annual meeting of the Board of Directors held in conjunction with the annual meeting of shareholders and at special meetings held during the year.  The executive officers are as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|R. Warren Wagoner                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Clark D. Stewart                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Christopher J. Reedy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Angela D. Shinabargar                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Kathy L. Gorrell                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Larry W. Franke                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|R. Warren Wagoner was General Manager, Am-Tech Metal Fabrications, Inc. from 1982 to 1987.  From 1987 to 1989, Mr. Wagoner was President of Stelco, Inc.  Mr. Wagoner was Sales Manager for Yamazen Machine Tool, Inc. from March 1992 to March 1994.  Mr. Wagoner was President of the Company from July 26, 1989, to September 1, 1989.  He became Chairman of the Board of the Company on August 30, 1989.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Clark D. Stewart was President of Tradewind Industries, Inc., a manufacturing company, from 1979 to 1985. From 1986 to 1989, Mr. Stewart was Executive Vice President of RO Corporation.  In 1980, Mr. Stewart became President of Tradewind Systems, Inc.  He became President of the Company in September 1989.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Christopher J. Reedy worked for Colantuono & Associates, LLC from 1997 to 2000 in the area of aviation, general business and employment counseling, and from 1995 to 1997 with the Polsinelli, White firm.  He was involved in aviation product development and sales with Bendix/King, a division of AlliedSignal, Inc. from 1988 through 1993.  Mr. Reedy joined the Company in November 2000.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Angela D. Shinabargar was the controller of A&M products, a subsidiary of First Brands Corporation from 1995 to 1998.  From 1998 to 2000 Ms. Shinabargar was a Senior Business Systems Analyst for Black & Veatch of Kansas, the largest privately held engineering firm in the United States.  Ms. Shinabargar was the CFO of Peerless Products, Inc. a manufacturer of customized windows from 2000 to 2001.  Ms. Shinabargar joined the Company in October 2001.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Kathy L. Gorrell was Assistant Cashier at Weslayan Bank in Houston, Texas from 1983 to 1985 and then at Spring National Bank in Spring, Texas from 1985 to 1987.  Ms. Gorrell was a building IT coordinator with the Kansas USD #233 before joining the Company in February 1997 as a special projects coordinator.  Ms. Gorrell became Treasurer and Chief Information Officer of the Company in February 1998.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Larry W. Franke was Vice President and General Manager of Kansas City Aviation Center from 1984 to 1992. From 1993 to 1994 he was Vice President of Operations and Sales for Marketlink, an aircraft marketing company. Mr. Franke joined the Company in July 1994 as Director of Marketing and was promoted in August 1995 to Vice President of Operations and Sales.  Mr. Franke is currently Vice President of Aircraft Modifications at Avcon.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Section 16(a) Beneficial Ownership Reporting Compliance                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Based solely upon a review of Forms 3 and 4 and amendments thereto furnished to the Company pursuant to Rule 16(a)-3(e) during the most recent fiscal year and Form 5 and amendments thereto furnished to the Company with respect to the most recent fiscal year, the Company believes that no person who at any time during the fiscal year was a director, officer, beneficial owner of more than 10% of any class of equity securities registered pursuant to Section 12 of the Exchange Act failed to file on a timely basis reports required by Section 16(a) of the Exchange Act during the most recent fiscal year or prior fiscal years.Code of EthicsThe Company has adopted a code of ethics for our executive and senior financial officers, violations of which are required to be reported to the audit committee.  The Company will furnish a copy without charge upon written request to the Company at 19920 West 161st Street, Olathe, Kansas 66062, Attn:  Secretary.
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|Item 11.  EXECUTIVE COMPENSATION                                                                                                                                                                                                                                                                                                                                                                              
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|SUMMARY                                                                                                                                                                                                                                                                                                                                                                                                       
|The following table provides certain summary information concerning compensation paid or accrued by the Company to or on behalf of the Company's Chief Executive Officer and each of the other most highly compensated executive officers of the Company whose salary and bonus exceeded $100,000 (determined as of the end of the last fiscal year) for the fiscal years ended April 30, 2006, 2005 and 2004:
|SUMMARY COMPENSATION TABLE                                                                                                                                                                                                                                                                                                                                                                                    
|                                                                                                                                                                                                                                                                                                                                                                                                              
|Name and Principal Position                                                                                                                                                                                                                                                                                                                                                                                   

|Clark D. Stewart,
President ,CEO and
Director                                              | 06
05
04 | 332,063
320,450
297,345 | ---
---
---     | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
---
|------------------------------------------------------------------------------------------ | -------- | ----------------------- | --------------- | ----------- | ----------- | ----------- | ----------- | -----------
|                                                                                           |          |                         |                 |             |             |             |             |            
|R. Warren Wagoner
Director - Chairman of the Board                                         | 06
05
04 | 127,391
113,628
---     | ---
---
---     | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
---
|                                                                                           |          |                         |                 |             |             |             |             |            
|Christopher J. Reedy
Vice President and acting Secretary                                   | 06
05
04 | 155,579
147,384
139,337 | 2,500
2,500
--- | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
---
|                                                                                           |          |                         |                 |             |             |             |             |            
|Larry W. Franke
President of Avcon
Industries                                              | 06
05
04 | 190,584
172,699
155,778 | 5,000
5,000
--- | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
---
|                                                                                           |          |                         |                 |             |             |             |             |            
|Angela D. Shinabargar
Chief Financial Officer                                              | 06
05
04 | 99,584
92,773
83,958    | 1,250
1,250
--- | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
--- | ---
---
---
|(1)  Represents options granted pursuant to the Company's Nonqualified Stock Option Plans.
|OPTION GRANTS, EXERCISES AND HOLDINGS                                                     
|No options were granted to any named executive officer in the last fiscal year.           

|The following table provides information with respect to the named executive officers concerning options exercised and unexercised options held as of the end of the Company's last fiscal year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
AND FY-END OPTION VALUES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Clark D. Stewart,
Chief Executive Officer                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|R. Warren Wagoner,
Director - Chairman of the Board                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Christopher J. Reedy,
Vice President and acting Secretary                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Angela D. Shinabargar,
Chief Financial Officer                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Larry W. Franke,
President of Avcon Ind.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|COMPENSATION OF DIRECTORS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Each non-officer director is entitled to a director's fee of $100 for meetings of the Board of Directors which he attends.  Officer-directors are not entitled to receive fees for attendance at meetings.  No fees were paid in fiscal 2005 or fiscal 2004.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|EMPLOYMENT CONTRACTS, TERMINATION OF EMPLOYMENT AND CHANGE-IN-CONTROL
ARRANGEMENTS.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|On April 30, 2001, the Company extended the employment agreement through August 31, 2006 with Clark D. Stewart under the terms of which Mr. Stewart was employed as the President and Chief Executive Officer of the Company.  On January 27, 2004 the Company extended the employment agreement with Mr. Stewart with the terms as currently provided including annual increases of 5% through December 31, 2010.  In the event Mr. Stewart is terminated from employment with the Company other than "for cause," Mr. Stewart shall receive as severance pay an amount equal to the unpaid salary for the remainder of the term of the employment agreement. Mr. Stewart is also granted an automobile allowance of $600 per month.                                                                                                                                                                                                                                                                                                            
|COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|The Compensation Committee of the Board of Directors is comprised of Mr. Wagoner, Mr. Stewart, Mr. Hayden and Mr. Logan.  Mr. Wagoner is the Chairman, Mr. Stewart is the President and Chief Executive Officer of the Company.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|During fiscal 2006, 2005 and 2004 the consulting firm of Griffith & Associates was paid for business consulting services rendered to the Company in the approximate amount of $0, $87,080 and $104,500 respectively.  William A. Griffith, was a director for the Company, and was a principal at Griffith & Associates.  Mr. Griffith passed away March 30, 2005.
During fiscal 2004, the consulting firm of Butler Financial Corporation provided business consulting services to the Company in the amount of $96,000.  R. Warren Wagoner, who is a director for the Company, is a principal at Butler Financial Corporation.  Mr. Wagoner became an employee of the Company in fiscal 2005. 
In the normal course of business we purchased modifications services and avionics of approximately $163,800, $610,000 and $154,500 from a company partially owned by David Hayden, a director for the Company during fiscal 2006, 2005 and 2004 respectively.                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Item 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED SHAREHOLDER MATTERS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|The following table sets forth, with respect to the Company's common stock (the only class of voting securities), the only persons known to be beneficial owners of more than five percent (5%) of any class of the Company's voting securities as of July 7, 2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Name and Address of Beneficial Owner                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Clark D. Stewart
19920 West 161st Street
Olathe, Kansas 66062
R. Warren Wagoner
19920 West 161st Street
Olathe, Kansas 66062                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|(1)	Unless otherwise indicated by footnote, nature of beneficial ownership of securities is direct, and 	beneficial ownership as shown in the table arises from sole voting power and sole investment power.
(2)	Includes 886,429 shares which may be acquired by Mr. Stewart pursuant to the exercise of stock options 	which are exercisable.
(3)	Includes 12,143 shares which may be acquired by Mr. Wagoner pursuant to the exercise of stock options 	which are exercisable.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|The following table sets forth, with respect to the Company's common stock (the only class of voting securities), (i) shares beneficially owned by all directors and named executive officers of the Company, and (ii) total shares beneficially owned by directors and officers as a group, as of April 30, 2005.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Name of Beneficial Owner                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Larry W. Franke                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|David B. Hayden                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|William E. Logan                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Christopher J. Reedy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Clark D. Stewart                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|R. Warren Wagoner                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Angela D. Shinabargar                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|All Directors and Executive Officers as a Group (10 persons)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|(1)	Unless otherwise indicated by footnote, nature of beneficial ownership of securities is direct and 	beneficial ownership as shown in the table arises from sole voting power and sole investment power.
(2)	Includes 886,429 shares, which may be acquired by Mr. Stewart pursuant to the exercise of stock 	options, 	which are exercisable.
(3)	Includes 148,929 shares, which may be acquired by Mr. Logan pursuant to the exercise of stock options 	which are exercisable.
(4)	Includes 12,143 shares, which may be acquired by Mr. Wagoner pursuant to the exercise of stock 	options, 	which are exercisable.
(5)	Includes 80,877 shares, which may be acquired by Mr. Franke pursuant to the exercise of stock options, 	which are exercisable.
(6)	Includes 1,128,378 shares for all directors and executive officers as a group, which may be acquired 	pursuant to the exercise of stock options, which are exercisable.
The Company does not have any equity compensation plans which have not been approved by security holders.

Equity Compensation Plan Information

|Plan Category                                                                                                                                                              | Number of securities to be issued upon exercise of outstanding options, warrants and rights |   | Weighted-average exercise price of outstanding options, warrants and rights | Number of securities remaining available for future issuances under equity compensation plans (excluding securities reflected in column (a)) |    
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------- | - | --------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- | ---
|                                                                                                                                                                           | (a)                                                                                         |   | (b)                                                                         | (c)                                                                                                                                          |    
|Equity compensation plans approved by security holders                                                                                                                     | 1,493,763                                                                                   | $ | .8100
..                                                                    | 5,768,300                                                                                                                                    | (1)
|                                                                                                                                                                           |                                                                                             |   |                                                                             |                                                                                                                                              |    
|Equity compensation plans not approved by security holders                                                                                                                 | 0                                                                                           |   | 0                                                                           | 0                                                                                                                                            |    
|Total                                                                                                                                                                      | 1,493,763                                                                                   | $ | .8100                                                                       | 5,768,300                                                                                                                                    |    
|(1)  See Note 5 to the audited consolidated financial statements for a description of the equity compensation plan for securities remaining available for future issuance.



|Period                                                                                                                                 | Total Number of Shares Purchased |   | Average Price Paid per Share | Maximum Number (or Approximate Dollar Value) of Shares that May Yet be Purchased under the Plans or Programs |    
|-------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------- | - | ---------------------------- | ------------------------------------------------------------------------------------------------------------ | ---
|                                                                                                                                       | (a)                              |   | (b)                          | (c)                                                                                                          |    
|May 1, 2005 through April 30, 2006                                                                                                     | 0                                |   | 0                            | 500,000                                                                                                      | (1)
|                                                                                                                                       |                                  |   |                              |                                                                                                              |    
|Total                                                                                                                                  | 0                                | $ | 0                            | 500,000                                                                                                      |    
|(1)  Shares that may yet be purchased under the Butler National Board action as reported on Form 8-K by the Company on March 28, 2005.

|Item 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
During fiscal 2006, 2005 and 2004 the consulting firm of Griffith & Associates was paid for business consulting services rendered to the Company in the approximate amount of $0, $87,080 and $104,500 respectively.  William A. Griffith, was a director for the Company, and was a principal at Griffith & Associates.  Mr. Griffith passed away on March 30, 2005.  
During fiscal 2004, the consulting firm of Butler Financial Corporation provided business consulting services to the Company in the amount of $96,000.  R. Warren Wagoner, who is a director for the Company, is a principal at Butler Financial Corporation.  Mr. Wagoner became an employee of the Company in fiscal 2005. 
In the normal course of business we purchased modifications services and avionics of approximately $163,800, $610,000 and $154,500 from a company partially owned by David Hayden, a director for the Company during fiscal 2006, 2005 and 2004 respectively.                                             
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Item 14.  PRINCIPAL ACCOUNTANT FEES AND SERVICES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|(a) Includes fees billed for professional services rendered in connection with the audit of the annual financial 	statements and for the review of the quarterly financial statements.
(b) Includes fees billed for professional services rendered in connection with assurance and other activities not 	explicitly related to the audit of Butler's financial statements, including the audits of Butler's employee benefit 	plans, contract compliance reviews and accounting research.
(c) Includes fees billed for domestic tax compliance and tax audits, corporate-wide tax planning and executive tax consulting and return preparation.
(d) Includes fees billed for financial systems design and implementation services.
The Audit Committee has adopted a policy requiring pre-approval by the committee of all services (audit and non-audit) to be provided to Butler by its independent auditor.  In accordance with that policy, the Audit Committee has given its approval for the provision of audit services by Weaver and Martin LLC for fiscal 2007.



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|PART IV                                                                                          
|-------------------------------------------------------------------------------------------------
|Item 15.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K                        
|(a)	Documents Filed As Part of Form 10-K Report.                                                 
|(1)  Financial Statements:                                                                       
|Description                                                                                      
|Report of Independent Registered Public Accounting Firm                                          
|Consolidated Balance Sheet as of April 30, 2006 and 2005                                         
|Consolidated Income Statement for the years ended April 30, 2006, 2005 and 2004                  
|Consolidated Statements of Shareholders' Equity for the years ended April 30, 2006, 2005 and 2004
|Consolidated Statements of Cash Flows for the years ended April 30, 2006, 2005 and 2004          
|Notes to Consolidated Financial Statements                                                       
|(2)  Financial Statement Schedules                                                               



|Schedule                                                                                                                                                                                                 | Description                                                                                                                                                                                                                                                             | Page No.
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------
|II.                                                                                                                                                                                                      | Valuation and Qualifying Accounts and Reserves for the years ended April 30, 2006, 2005 and 2004                                                                                                                                                                        | 57      
|All other financial statements and schedules not listed have been omitted because the required information is inapplicable or the information is presented in the financial statements or related notes.
|(3) Exhibits Index:                                                                                                                                                                                     
|No.                                                                                                                                                                                                      | Description                                                                                                                                                                                                                                                             | Page No.
|3.1                                                                                                                                                                                                      | Articles of Incorporation, as amended and restated, are incorporated by reference to Exhibit 3.1 of the Company's Form DEF 14A filed on December 26, 2001                                                                                                               | *       
|3.2                                                                                                                                                                                                      | Bylaws, as amended, are incorporated by reference to Exhibit A of the Company's Form DEF 14A filed on December 15, 2003                                                                                                                                                 | *       
|4.1                                                                                                                                                                                                      | Certificate of Rights and Preferences of $100 Class A Preferred Shares of the Company, are incorporated by reference to Exhibit 4.1 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994.                                                        | *       
|4.2                                                                                                                                                                                                      | Certificate to Set Forth Designations, Preferences and Rights of Series C Participating Preferred Stock of the Company, are incorporated by reference to Exhibit 1 of the Company's Form 8-A (12G) filed on December 7, 1998.                                           | *       
|10.1                                                                                                                                                                                                     | 1989 Nonqualified Stock Option Plan is incorporated by reference to the Company's Form 8-K filed on September 1, 1989 and as amended on Exhibit 4(a) of the Company's Form S-8 filed on February 20, 1998.                                                              | *       
|10.2                                                                                                                                                                                                     | Nonqualified Stock Option Agreement dated September 8, 1989 between the Company and Clark D. Stewart is incorporated by reference to the Company's Form 8-K filed on September 1, 1989                                                                                  | *       
|10.3                                                                                                                                                                                                     | Agreement dated March 10, 1989 between the Company and Woodson Electronics, Inc. is incorporated by reference to the Company's Form 10-K for the fiscal year ended April 30, 1989                                                                                       | *       
|10.4                                                                                                                                                                                                     | Agreement of Stockholder to Sell Stock dated January 1, 1992, is incorporated by reference to the Company's Form 8-K filed on January 15, 1992                                                                                                                          | *       
|10.5                                                                                                                                                                                                     | Private Placement of Common Stock pursuant to Regulation D, dated December 15, 1993, is incorporated by reference to the Company's Form 8-K filed on January 24, 1994                                                                                                   | *       
|10.6                                                                                                                                                                                                     | Stock Acquisition Agreement of RFI dated April 21, 1994, is incorporated by reference to Company's Form 8-K filed on July 21, 1994                                                                                                                                      | *       
|10.7                                                                                                                                                                                                     | Employment Agreement between the Company and Brenda Lee Shadwick dated July 6, 1994, are incorporated by reference to Exhibit 10.7 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994.**                                                       | *       
|10.8                                                                                                                                                                                                     | Employment Agreement between the Company and Clark D. Stewart dated March 17, 1994, are incorporated by reference to Exhibit 10.8 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994.**                                                        | *       
|10.9                                                                                                                                                                                                     | Employment Agreement among the Company, R.F., Inc. and Marvin J. Eisenbath dated  April 22, 1994, are incorporated by reference to Exhibit 10.9 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994.**                                          | *       
|10.10                                                                                                                                                                                                    | Real Estate Contract for Deed and Escrow Agreement between Wade Farms, Inc. and the Company, are incorporated by reference to Exhibit 10.10 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994.                                                | *       
|10.11                                                                                                                                                                                                    | 1993 Nonqualified Stock Option Plan, are incorporated by reference to Exhibit 10.11 of  the Company's Form 10-K/A, as amended, for the year ended April 30, 1994 and as amended on Exhibit 4(a) of the Company's Form S-8 filed on February 20, 1998.                   | *       
|10.12                                                                                                                                                                                                    | 1993 Nonqualified Stock Option Plan II, are incorporated by reference to Exhibit 10.12 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994 and as amended on Exhibit 4(a) of the Company's Form S-8 filed on February 20, 1998.                 | *       
|10.13                                                                                                                                                                                                    | Industrial State Bank principal amount of $500,000 revolving credit line, as amended, are incorporated by reference to Exhibit 10.13 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994.                                                       | *       
|10.14                                                                                                                                                                                                    | Bank IV guaranty for $250,000 dated October 14, 1994, are incorporated by reference to Exhibit 10.14 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994                                                                                        | *       
|10.15                                                                                                                                                                                                    | Bank IV loan in principal amount of $300,000 dated December 30, 1993, are incorporated by Reference to Exhibit 10.15 of the Company's Form 10-K/A, as amended, for the year ended April 30, 1994.                                                                       | *       
|10.16                                                                                                                                                                                                    | Letter of Intent to acquire certain assets of Woodson Electronics, Inc., is incorporated by reference to Exhibit 10.16 of the Company's Form 10-K, as amended for the year ended April 30, 1995.                                                                        | *       
|10.17                                                                                                                                                                                                    | Asset Purchase Agreement between the Company and Woodson Electronics, Inc. dated May 1, 1996, is incorporated by reference to Exhibit 10.17 of the Company's Form 10-K, as amended for the year ended  April 30, 1996.                                                  | *       
|10.18                                                                                                                                                                                                    | Non-Exclusive Consulting, Non-Disclosure and Non-Compete agreement with Thomas E. Woodson dated May 1, 1996, is incorporated by reference to Exhibit 10.18 of the Company's Form 10-K, as amended for the year ended April 30, 1996.                                    | *       
|10.19                                                                                                                                                                                                    | 1995 Nonqualified Stock Option Plan dated December 1, 1995, is incorporated by reference to Exhibit 10.19 of the Company's Form 10-K, as amended for the year ended April 30, 1996 and as amended on Exhibit 4(a) of the Company's Form S-8 filed on February 20, 1998. | *       
|10.20                                                                                                                                                                                                    | Settlement Agreement and Release - Marvin J. Eisenbath and the Company dated  April 30, 1997, is incorporated by reference to Exhibit 10.20 of the Company's Form 10-K,  as amended for the year ended April 30, 1997                                                   | *       
|10.21                                                                                                                                                                                                    | Settlement Agreement and Release - Brenda Shadwick and the Company dated May 1, 1997, is incorporated by reference to Exhibit 10.21 of the Company's Form 10-K, as amended for the year ended April 30, 1997.                                                           | *       
|10.22                                                                                                                                                                                                    | Preferred Stock Purchase Rights and Rights Agreement dated October 26, 1998 between the Company and Norwest Bank Minnesota are incorporated by reference to Exhibit 4(a) of the Company's Form 8-A filed on December 7, 1998.                                           |         
|21                                                                                                                                                                                                       | List of Subsidiaries                                                                                                                                                                                                                                                    | 58      
|23.1                                                                                                                                                                                                     | Consent of Independent Public Accountants                                                                                                                                                                                                                               | 59      
|27.1                                                                                                                                                                                                     | Financial Data Schedule (EDGAR version only).  Filed herewith.*                                                                                                                                                                                                         | *       
|99                                                                                                                                                                                                       | Cautionary Statement for Purpose of the "Safe Harbor" Provisions of the Private Securities Reform Act of 1995.                                                                                                                                                          | 60-62   
|32.1                                                                                                                                                                                                     | Certifications of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002                                                                                                                                                                     | 63      
|32.2                                                                                                                                                                                                     | Certifications of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002                                                                                                                                                                     | 64      
|*    Incorporated by reference                                                                                                                                                                          
|**  Relates to executive officer employment compensation                                                                                                                                                





|SIGNATURES                                                                                                                                                                                                      
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
|July 27, 2006                                                                                                                                                                                                   
|BUTLER NATIONAL CORPORATION
/s/ Clark D. StewartClark D. Stewart, President 
and Chief Executive Officer                                                                                                        
|Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant in the capacities and on the dates indicated:       
|Signature                                                                                                                                                                                                       
|/s/ Clark D. Stewart
Clark D. Stewart                                                                                                                                                                           
|/s/ R. Warren Wagoner
R. Warren Wagoner                                                                                                                                                                         
|/s/ William E. Logan
William E. Logan                                                                                                                                                                           
|/s/ David B. Hayden
David B. Hayden                                                                                                                                                                             
|/s/ Angela D. Shinabargar
Angela D. Shinabargar                                                                                                                                                                 





|CERTIFICATIONS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                            
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------
|I, Clark D. Stewart, certify that:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|1.  I have reviewed this annual report on Form 10-K of Butler National Corporation;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|2.  Based on my knowledge, this annual report does not contain any untrue statement of material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|3.  Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly represent in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|4.  The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15 (e) and 15d-15(e)) for the registrant and we have:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|a)  designed such disclosure controls and procedures or caused such disclosure and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;
b)  evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and 
c)  disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
|5.  The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|a)  all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
b)  any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Date:  July 27, 2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | s/s Clark D. Stewart
Clark D. Stewart
President and Chief Executive Officer



|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |                                                                        
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -----------------------------------------------------------------------
|CERTIFICATIONS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                        
|I, Angela D. Shinabargar, certify that:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|1.  I have reviewed this annual report on Form 10-K of Butler National Corporation;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|2.  Based on my knowledge, this annual report does not contain any untrue statement of material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|3.  Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly represent in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|4.  The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15 (e) and 15d-15(e)) for the registrant and we have:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|a)  designed such disclosure controls and procedures or caused such disclosure and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;
b)  evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and 
c)  disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
|5.  The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|a)  all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
b)  any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Date:  July 27, 2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | s/s Angela D. Shinabargar
Angela D. Shinabargar
Chief Financial Officer



|BUTLER NATIONAL CORPORATION AND SUBSIDIARIES
FINANCIAL STATEMENTS
AS OF APRIL 30, 2006Report of Independent Registered Public Accounting FirmStockholders and Directors
Butler National CorporationWe have audited the accompanying consolidated balance sheets of Butler National Corporation as of April 30, 2006 and 2005 and the related consolidated statements of income, shareholders' equity, and cash flows for each of the three years in the period ended April 30, 2006, and the financial statement schedule listed in the Index at Item 15. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatements. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Butler National Corporation as of April 30, 2006 and 2005 and the consolidated results of its operations and its cash flows for each of the three years in the period ended April 30, 2006 in conformity with U.S. generally accepted accounting principles.  Also, in our opinion, the related financial statement schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.
/s/Weaver & Martin, LLCWeaver & Martin, LLCKansas City, Missouri
July 11, 2006
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|BUTLER NATIONAL CORPORATION
CONSOLIDATED BALANCE SHEETS
as of April 30, 2006 and 2005
|-------------------------------------------------------------------------------------
|                                                                                     
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|ASSETS                                                                               
|CURRENT ASSETS:                                                                      
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|PROPERTY, PLANT AND EQUIPMENT                                                        
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|SUPPLEMENTAL TYPE CERTIFICATES                                                       
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|ADVANCES FOR INDIAN GAMING DEVELOPMENTS                                              
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|OTHER ASSETS                                                                         
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|Total Assets                                                                         
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|The accompanying notes are an integral part of these financial statements            

|BUTLER NATIONAL CORPORATION AND SUBSIDIARIES                             
|-------------------------------------------------------------------------
|CONSOLIDATED INCOME STATEMENTS                                           
|FOR THE YEARS ENDED APRIL 30, 2006, 2005 AND 2004                        
|                                                                         
|                                                                         
|REVENUES                                                                 
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|COST OF SALES                                                            
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|GROSS PROFIT                                                             
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|SELLING, GENERAL AND ADMINISTRATIVE EXPENSES                             
|                                                                         
|OPERATING INCOME                                                         
|                                                                         
|OTHER INCOME (EXPENSE)                                                   
|                                                                         
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|INCOME BEFORE PROVISION FOR INCOME TAXES                                 
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|PROVISION FOR INCOME TAXES                                               
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|NET INCOME                                                               
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|BASIC EARNINGS PER COMMON SHARE                                          
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|DILUTED EARNINGS PER COMMON SHARE                                        
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|The accompanying notes are an integral part of these financial statements



|BUTLER NATIONAL CORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
FOR THE YEARS ENDED APRIL 30, 2006, 2005, AND 2004
|-----------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                               
|                                                                                                                                               
|BALANCE, April 30, 2003                                                                                                                        
|Issuance of stock                                                                                                                              
|Net income                                                                                                                                     
|                                                                                                                                               
|BALANCE, April 30, 2004                                                                                                                        
|Issuance of stock 	Options exercised                                                                                                           
|                                                                                                                                               
|Issuance of stock         	Benefit Plan                                                                                                        
|                                                                                                                                               
|Stock Owed not issued 	from exercise (cashless)                                                                                                
|Net income                                                                                                                                     
|                                                                                                                                               
|BALANCE, April 30, 2005                                                                                                                        
|Issuance of stock owed from	prior period                                                                                                       
|                                                                                                                                               
|Issuance of stock Benefit 	Plan                                                                                                                
|                                                                                                                                               
|Net income                                                                                                                                     
|                                                                                                                                               
|BALANCE, April 30, 2006                                                                                                                        
|                                                                                                                                               
|                                                                                                                                               
|The accompanying notes are an integral part of these financial statements.                                                                     
|                                                                                                                                               

|BUTLER NATIONAL CORPORATION AND SUBSIDIARIES                              
|--------------------------------------------------------------------------
|CONSOLIDATED STATEMENTS OF CASH FLOWS                                     
|FOR THE YEARS ENDED APRIL 30, 2006, 2005, AND 2004                        
|                                                                          
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|CASH FLOWS FROM OPERATING ACTIVITIES                                      
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|CASH FLOWS FROM INVESTING ACTIVITIES                                      
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|CASH FLOWS FROM FINANCING ACTIVITIES                                      
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|NET INCREASE (DECREASE) IN CASH                                           
|                                                                          
|CASH, beginning of year                                                   
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|CASH, end of year                                                         
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|SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION                         
|                                                                          
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|NON CASH FINANCING ACTIVITIES                                             
|                                                                          
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|                                                                          
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|The accompanying notes are an integral part of these financial statements.

|BUTLER NATIONAL CORPORATION AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES:
The accompanying consolidated financial statements include the accounts of Butler National Corporation (BNC) and its wholly-owned active subsidiaries, Avcon Industries, Inc. AVT Corporation, BCS Design, Inc., Butler National Services, Inc., Butler National Service Corporation, Butler National Corporation-Tempe, Butler National, Inc., Butler Temporary Services, Inc., and Kansas International Corporation (collectively, The Company).  All significant intercompany transactions have been eliminated in consolidation.
Avcon Industries, Inc. modifies business category aircraft at its Newton, Kansas facility.  Modifications can include passenger-to-freighter configuration, addition of aerial photography capability, and stability enhancing modifications.  Butler National Inc. acquires airplanes, principally Learjets, to refurbish and sell.  Butler National Corporation-Tempe is primarily engaged in the manufacture of airborne switching units used in Boeing McDonnell Douglas aircraft, electronic upgrades for classic weapon control systems used by the military and transient suppression devices for Boeing 747 Classic aircraft.  Butler National Services is principally engaged in monitoring remote water and wastewater pumping stations through electronic surveillance.  Butler National Service Corporation is a management consulting and administrative services firm providing business planning and financial coordination to Indian tribes interested in owning and operating casinos under the terms of the Indian Gaming Regulatory Act of 1988.  BCS Design provides professional architectural and graphic design services.Use of Estimates:  The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from those estimates.
Inventories:  Inventories are priced at the lower of cost, determined on a first-in, first-out basis, or market. Inventories include material, labor and factory overhead required in the production of our products, and airplanes held for resale.
Inventory obsolescence is examined on a regular basis.  Inventory that has been inactive for a period of two years without use in normal and current productions are reserved as obsolete.  The obsolete inventory generally consists of Falcon and Learjet parts and electrical components.
Property and Related Depreciation:  Machinery and equipment are recorded at cost and depreciated over their estimated useful lives.  Depreciation is provided on a straight-line basis.  The lives used for the significant items within each property classification range from 3 to 39 years.
|Maintenance and repairs are charged to expense as incurred.  The cost and accumulated depreciation of assets retired are removed from the accounts and any resulting gains or losses are reflected as income or expense.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Long-lived Assets:  Long-lived assets and identifiable intangibles to be held and used are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable.  Impairment is measured by comparing the carrying value of the long-lived asset to the estimated undiscounted future cash flows expected to result from use of the assets and their eventual disposition.  We determined that as of April 30, 2006, there had been no impairment in the carrying value of long-lived assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Advances for Indian Gaming Developments:  We are advancing funds for the establishment of Indian gaming. These funds have been capitalized in accordance with Statements of Financial Accounting Standards (SFAS) 67 "Accounting for Costs and Initial Rental Operations of Real Estate Projects."  Such standard requires costs associated with the acquisition, development, and construction of real estate and real estate-related projects to be capitalized as part of that project.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Our advances to the tribes for gaming developments are capitalized.  These advances represent costs to be reimbursed upon approval of Indian gaming in several locations.  We have agreements in place which require payments of advances to be made to us upon opening of Indian gaming facilities.  Once gaming facilities have gained proper approvals, we plan to enter into a note receivable arrangement with the Tribe to secure reimbursement of advanced funds for that particular project.  Reserves have been recorded for advances for the Indian gaming development costs when we are unable to determine whether reimbursement from the tribes will occur.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|We have advanced and invested a total of $4,718,991 in Indian gaming developments.  We have reserves of $2,912,440, at April 30, 2006 and April 30, 2005.  **Based on the information available to us we believe that our advances for Indian gaming developments will be totally reimbursed as casinos are opened.  Due to the fact that all of the proposed casinos are involved in legal and governmental actions whose outcome is not certain nor is there any time frame for resolution we believe it is necessary to establish reserves against the advances.  The reserve amount is an estimate of the value we would receive if a Tribal casino was not opened and we were forced to liquidate the assets that we have acquired with our advances.  These assets were intended to be used with Tribal casinos and consist of**the purchase of land, land improvements, professional design fees and other consulting and legal costs related to the development of Indian Gaming facilities.  The land purchases are located adjacent to residential developments.  We believe that these tracts could be developed and sold for residential and commercial use to recover advances if the gaming enterprises do not open.
In the year ended April 30, 2005, we increased the reserve by $200,000 and did not change the reserve in 2006.  We determine annually the amount of any increase in reserves based on our determination of the fair value of assets acquired by our advances for Indian developments.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|f)	Supplemental Type Certificates:  Supplemental Type Certificates (STCs) are authorizations granted by the Federal Aviation Administration (FAA) for specific modification of a certain aircraft.  The STC authorizes us to perform modifications, installations and assemblies on applicable customer-owned aircraft.  Costs incurred to obtain STCs are capitalized and subsequently amortized against revenues being generated from aircraft modifications associated with the STC.  The costs are expensed as services are rendered on each aircraft through 	costs of sales using the units of production method.  The legal life of STCs are indefinite.  Consultant costs, as 	shown below, include costs of engineering, legal and aircraft specialists.  STC capitalized costs are as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

|Bank Overdraft Payable:  Our cash management program results in checks outstanding in excess of bank balances in the general disbursement account.  When checks are presented to the bank for payment, cash deposits in amounts sufficient to fund the checks are made from funds provided under the terms of our promissory notes agreement.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
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|Financial Instruments:  The carrying value of cash and cash equivalents, short-term investments, accounts receivable, accounts payable, accrued expenses and accrued employee costs approximate fair value because of the short-term maturity of these instruments.  Fair values are based on quoted market prices and assumptions concerning the amount and timing of estimated future cash flows and assumed discount rates reflecting varying degrees of perceived risk.  Based upon borrowing rates currently available, the carrying value of notes payable long-term debt and capital lease obligations approximate fair value.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Revenue Recognition:  We perform aircraft modifications under fixed-price contracts.  Revenues from fixed-price contracts are recognized on the percentage-of-completion method, measured by the direct labor costs incurred compared to total estimated direct labor costs.  Revenue for off the shelf items and aircraft sales is recognized on the date of sale.
Revenue from Avionics are recognized when shipped and payment for materials are due within 30 days of invoicing.  Revenue for SCADA services, Gaming Management, and other Corporate/Professional Services are recognized on a monthly basis as services are rendered.  Payments for these services are received within 30 days of invoicing.  
In regard to warranties and returns, our products are special order and are not suitable for return.  Our products are unique upon installation and tested prior to their release and have been accepted by the customers.  In the rare event of a warranty claim, the claim is processed through the normal course of business; this may include additional charges to the customer.  In our opinion any future warranty work would not be material to the financial statements.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Earnings Per Share:  Earnings per common share is based on the weighted average number of common shares outstanding during the year.  Stock options have been considered in the dilutive earnings per share calculation.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Stock-based Compensation: We account for non-employee stock-based awards in which goods or services are the consideration received for the equity instruments issued in accordance with the provisions of SFAS No. 123®.
We have nonqualified stock option plans which provide key employees and consultants an opportunity to acquire ownership in the Company.  Options are granted under these plans at exercise prices equal to fair market value at the date of the grant, generally exercisable immediately and expire in 10 years.  We account for these plans under Statement of Financial Accounting Standards No. 123®.  The Company did not grant options for the fiscal years ending 2006, 2005 and 2004; therefore, there are no expenses relating to option grants for those periods.  There are 5,768,300 approved option shares available to grant under these plans.  The approved plan expiration date is December 31, 2010.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Income Taxes: Amounts provided for income tax expense are based on income reported for financial statement purposes and do not necessarily represent amounts currently payable under tax laws.  Deferred taxes, which arise principally from temporary differences between the period in which certain income and expense items are recognized for financial reporting purposes and the period in which they affect taxable income, are included in the amounts provided for income taxes.  Under this method, the computation of deferred tax assets and liabilities give recognition to enacted tax rates in effect in the year the differences are expected to affect taxable income.  Valuation allowances are established when necessary to reduce deferred tax assets to amounts that we expect to realize.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Cash and Cash Equivalents: Cash and cash equivalents consist primarily of cash and investments in a money market fund.  We consider all highly liquid investments with an original maturity of three months or less to be cash equivalents.  We maintain cash in bank deposit accounts that, at times, may exceed federally insured limits.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Concentration of Credit Risk:  We extend credit to customers based on an evaluation of their financial condition and collateral is not required.  We perform ongoing credit evaluations of our customers and maintain an allowance for doubtful accounts.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Research and Development: We charge to operations research and development costs.  The amount charged in the year ended April 30, 2006 and 2005 was approximately $1,558,408 and $1,353,572 respectively.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Warranties:  We warrant to our customer that our products and services are in good working order at the time of delivery.  We warrant that these products will continue to be serviceable for periods from 90 days to up to a maximum of 36 months. Our products are tested and accepted by the customer prior to their release.  For the years ended April 30, 2006, 2005, 2004 we had no beginning warranty reserve, no additions to warranty reserves and no reductions to the warranty reserve.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|In each of the three years ended April 30, our warranty expense was immaterial.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Recently Issued Accounting Standards:  In January 2003, the Financial Accounting Standards Board (FASB) issued Interpretation No. 46, "Consolidation of Variable Interest Entities, an Interpretation of Accounting Research Bulletin No. 51" (the Interpretation).  The Interpretation requires the consolidation of variable interest entities in which an enterprise absorbs a majority of the entity's expected losses, receives a majority of the entity's expected residual returns, or both, as a result of ownership, contractual or other financial interests in the entity.  Currently, entities are generally consolidated by an enterprise that has a controlling financial interest through ownership of a majority voting interest in the entity.  The Interpretation was originally immediately effective for variable interest entities created after January 31, 2003, and effective in the fourth quarter of fiscal 2003 for those created prior to February 1, 2003.  However, in October 2003, the FASB deferred the effective date for those variable interest entities created prior to February 1, 2003, until the first quarter of fiscal 2004.  This interpretation did not affect our financial statements.
In December 2004, the Financial Accounting Standards Board (FASB) issued SFAS No. 123®, Share-Based Payment, which revised SFAS No. 123 and superseded APB Opinion No. 25, Accounting for Stock Issued to Employees.  SFAS No. 123® requires that companies recognize compensation expense associated with grants of stock options and other equity instruments to employees in the financial statements.  Compensation cost will be measured based on the fair market value of the instrument will be recognized over the vesting period.  This pronouncement applies to all grants after the effective date and to the unvested portion of stock options outstanding as of the effective date.  The company anticipates that the effect of adopting this statement will not have a material effect on the financial statements.
Accounts receivable:  Accounts receivable are carried on a gross basis, with no discounting, less the allowance for doubtful accounts.  Management estimates the allowance for doubtful accounts based on existing economic conditions, the financial conditions of the customers, and the amount and the age of past due accounts.  Receivables are considered past due if full payment is not received by the contractual due date.  Past due accounts are generally written off against the allowance for doubtful accounts only after all collection attempts have been exhausted.
Reclassifications:  Certain reclassifications within the financial statement captions have been made to maintain consistency in presentation between years.

|2.  DEBT:Principal amounts of debt at April 30, 2006 and 2005, consist of the following:
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|Promissory Notes                                                                        
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|Other Notes Payable and Capital Lease Obligations                                       
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|Maturities of long-term debt and capital lease obligations are as follows:              
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|3.  INCOME TAXES:
Deferred taxes are determined based on the estimated future tax effects of differences between the financial statement and tax basis of assets and liabilities given the provision of the enacted tax laws.  We have net operating loss carryforwards and cumulative temporary differences, which would result in the recognition of net deferred tax assets.  A valuation allowance has been provided which reduces the net deferred tax asset to zero.  At April 30, 2006, there is approximately $1.5 million of net operating losses, which expire in 2007 to 2018.
|The deferred taxes are comprised of the following components:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

|                                                                                                        |   |                   |   | April 30, 2006    |  | April 30, 2005
|------------------------------------------------------------------------------------------------------- | - | ----------------- | - | ----------------- |  | --------------
|Deferred tax assets                                                                                     |   |                   |   |                  
|Accounts receivable reserve                                                                             | $ | 58,000            | $ | 34,000           
|Inventory and other reserves                                                                            |   | 516,000           |   | 510,000          
|Reserves for Advances for Indian gaming developments                                                    |   | 597,000           |   | 597,000          
|Net operating loss carryforwards                                                                        |   | 752,000           |   | 980,000          
|                                                                                                        |   | ----------------- |   | -----------------
|Total gross deferred tax assets                                                                         |   | 1,923,000         |   | 2,121,000        
|Valuation allowance                                                                                     |   | (1,839,000)       |   | (2,068,000)      
|                                                                                                        |   | ----------------- |   | -----------------
|Total deferred tax assets                                                                               | $ | 84,000            | $ | 53,000           
|                                                                                                        |   | =========         |   | =========        
|                                                                                                        |   |                   |   |                  
|Deferred tax liabilities:                                                                               |   |                   |   |                  
|Depreciation                                                                                            | $ | 72,000            | $ | 32,000           
|Accrued interest                                                                                        |   | 12,000            |   | 21,000           
|                                                                                                        |   | ----------------- |   | -----------------
|Total deferred tax liabilities                                                                          | $ | 84,000            | $ | 53,000           
|                                                                                                        |   | =========         |   | =========        
|Net deferred tax assets at April 30, 2006 have been fully offset by a valuation allowance as it is more
|likely than not that we will not ultimately realize any benefits.                                      

A reconciliation of the provision for income taxes to the statutory federal rate for continuing operations is as follows:

| |                                   |          | 2006               |         | 2005 |         | 2004
| | --------------------------------- | -------- | ------------------ | ------- | ---- | ------- | ----
| | Statutory federal income tax rate | 34.0%    |                    | 34.0%   |      | 34.0%  
| | Change in valuation allowance     | (102.7%) |                    | (45.1%) |      | (39.5%)
| | Nondeductible expenses            | 70.2%    |                    | 12.9%   |      | 6.8%   
| |                                   |          | Effective tax rate | 1.5%    |      | 1.8%    |     



|4.  SHAREHOLDERS' EQUITY:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|Common Stock Transactions                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|During the year ended April 30, 2006, we agreed to issue 471,149 shares valued at $141,345 as the match to the Company's 401(k) plan.  As of April 20, 2006, 456,414 of these shares have been issued and 14,735 shares have not been issued and are shown on the financial statements as "stock owed but not issued."
During the year ended April 30, 2005, we agreed to issue 239,215 shares valued at $155,490 as the match to the Company's 401(k) plan.  As of April 20, 2006, 237,255 of these shares have been issued and 1,960 shares have not been issued and are shown on the financial statements as "stock owed but not issued."
During the year ended April 30, 2005, we agreed to issue, in a cashless exercise, 11,825,598 shares in connection with the exercise of employee stock options granted through the Company's Non Qualified Stock Option Plans.  As of April 30, 2006, 7,571,463 of these shares have been issued and 4,254,139 shares have not been issued and are shown on the financial statements as "Stock owed but not issued".
During the year ended April 30, 2005, we received $64,374 and we issued 810,000 shares in connection with the exercise of options and warrants.
During the year ended April 30, 2004, we issued 166,000 shares valued at $41,500 in connection with the exercise of warrants for the reduction of a promissory note.
During the year ended April 30, 2004, we received $86,125 and we issued 500,000 shares in connection with the exercise of employee stock options granted through the Company's Non Qualified Stock Option Plans
During the year ended April 30, 2004, we issued 300,724 shares valued at $141,340 as the match to the Company's 401(k) plan.
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|5.  STOCK OPTIONS AND INCENTIVE PLANS
The following represents the outstanding and exercisable number of shares, weighted average exercise price and weighted average remaining contractual life of options outstanding and exercisable.
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                        
|Options exercisable at April 30                                                                                                                                                                                                         
|Weighted average fair value per share Options granted per year                                                                                                                                                                          
|Range of Exercise Prices                                                                                                                                                                                                                
|$0.9000                                                                                                                                                                                                                                 
|$0.0625                                                                                                                                                                                                                                 
|$0.1400                                                                                                                                                                                                                                 
|                                                                                                                                                                                                                                        

|                                 | Options      | Average Price
|-------------------------------- | ------------ | -------------
|                                 |              |              
|Outstanding Beginning 04/30/2003 | 17,808,700   | $            
|Granted                          |              | -            
|Cancelled                        |              | -            
|Exercised                        |              | 666,000      
|Outstanding Ending 04/30/2004    |              | 17,142,700   
|                                 |              |              
|Outstanding Beginning 04/30/2004 | 17,142,700   | $            
|Granted                          |              | -            
|Cancelled                        | (555,000)    | 0.44         
|Exercised                        | (15,093,937) | .28          
|Outstanding Ending 04/30/2005    |              | 1,493,763    
|                                 |              |              
|Outstanding Beginning 04/30/2005 | 1,493,763    | $            
|Granted                          |              | -            
|Cancelled                        |              | -            
|Exercised                        |              | -            
|Outstanding Ending 04/30/2006    |              | 1,493,763    



|                                                                                                                                                                                                                                                                                                                                                                                                         
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|6.  COMMITMENTS:
Lease Commitments
We lease space under operating leases with initial terms of three (3) years for Florida and ten (10) years in Newton.  Total rental expense incurred for the years ended April 30, 2006, 2005 and 2004, was $191,441, $148,983 and $183,425, respectively.
Minimum lease commitments under noncancellable operating leases for the next five (5) years are as follows:



|Year Ending Apr-30 |   | Amount   
|------------------ | - | ---------
|2007               | $ | 172,611  
|2008               |   | 170,563  
|2009               |   | 135,911  
|2010               |   | 135,911  
|2011               |   | 135,911  
|Thereafter         |   | 609,518  
|                   | $ | 1,360,425

|7.  CONTINGENCIES:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|We are involved in various lawsuits incidental to our business.  Management believes the ultimate liability, if any, will not have an adverse effect on the Company's financial position or results of operations.
There are no other significant known legal proceedings pending against us.  We consider all such unknown proceedings, if any, to be ordinary litigation incident to the character of the business.  We believe that the resolution of any claims will not, individually or in the aggregate, have a material adverse effect on the financial position, results of operations, or liquidity of the Company.
Due to our financial condition, and the need to reduce expenses, the board of directors approved the elimination of product liability insurance in August, 1989.                                                                                                                     
|8.  RELATED-PARTY TRANSACTIONS:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|During fiscal 2006, 2005 and 2004 the consulting firm of Griffith & Associates was paid for business consulting services rendered to the Company in the approximate amount of $0, $50,940 and $87,080 respectively.  William A. Griffith, was a director for the Company, and was a principal at Griffith & Associates.
During fiscal 2004, the consulting firm of Butler Financial Corporation provided business consulting services to the Company in the amount of $96,000.  R. Warren Wagoner, who is a director for the Company, is a principal at Butler Financial Corporation.  Mr. Wagoner became an employee of the Company in fiscal 2005. 
In the normal course of business we purchased modifications services and avionics of approximately $163,800, $610,000 and $154,500 from a company partially owned by David Hayden, a director for the Company during fiscal 2006, 2005 and 2004 respectively.
|9.  401(K) SAVINGS PLAN                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|We have a defined contribution plan authorized under Section 401(k) of the Internal Revenue Code.  All benefits-eligible employees with at least thirty days of service are eligible to participate in the plan; however there are only two entry dates per calendar year.  Employees may contribute up to twelve percent of their pre-tax covered compensation through salary deductions.  Each year we have chosen to match 100 percent of every pre-tax dollar an employee contributes.  Employees are 100 percent vested in the employer's contributions after three years of participation in the plan.  Our matching share contribution, at the then current market value, in 2006, 2005 and 2004 was approximately $141,345, $155,490 and $141,340 respectively.  If approved by the Board of Directors, the Company match is paid in common stock of the Company.                                          

|10.  INDUSTRY SEGMENTATION AND SALES BY MAJOR CUSTOMER:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Industry Segmentation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|The Company's operations have been classified into six segments in 2006, 2005 and 2004.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Aircraft Modifications - principally includes the modification of customer and company owned business-size aircraft from passenger to freighter configuration, addition of aerial photography capability, and stability enhancing modifications for Learjet, Beechcraft, Cessna, and Dassault Falcon aircraft along with other specialized modifications.  We provide these services through our subsidiary, Avcon Industries, Inc. ("Aircraft Modifications" or "Avcon").  Avionics - principally includes the manufacture, sale and service of airborne electronic switching units used in DC-9, DC-10, DC-9/80, MD-80, MD-90 and the KC-10 aircraft, Transient Suppression Devices (TSD's) for fuel tank protection on Boeing Classic 737 and 747 aircraft and other Classic aircraft using a capacitance fuel quantity indicating system ("FQIS"), airborne electronics upgrades for classic weapon control systems used on military aircraft and vehicles, and consulting services with airlines and equipment manufacturers regarding fuel system safety requirements.  We provide the products through our subsidiary, Butler National Corporation - Tempe, Arizona and the services through Butler National Corporation - Olathe, Kansas ("Avionics", "Classic Aviation Products", "Safety Products", "Switching Units", or "WAI").Aircraft - Acquisition, Modification and Sales -Our subsidiary, Butler National, Inc., purchases airplanes, principally Learjets, modifies the planes and sells the planes directly to customers or receives a broker fee for placing an airplane with a customer.  Also, the Company-owned aircraft are sometimes used to prove the design, testing and compliance of STC modifications during the FAA approval processServices - SCADA (Supervisory Control and Data Acquisition) Systems and Monitoring Services - principally includes the monitoring and related repair services of water and wastewater remote pumping stations through electronic surveillance for municipalities and the private sector.  We provide these services through our subsidiary, Butler National Services, Inc. ("Monitoring Services" or "BNS").Corporate / Professional Services - provides as a management service licensed architectural services through our subsidiary, BCS Design, Inc.  These services include commercial and industrial building design and graphic representation.  We have expanded this segment to include aviation-related engineering consulting services and operate as the Butler National Aircraft Certification Center ("BNACC").Gaming - principally includes business management services and advances to Indian tribes in connection with the Indian Gaming Regulatory Act of 1988.  We provide these management services and advances through our subsidiary, Butler National Service Corporation ("Management Services", "Gaming" "IGC" or "BNSC").

|Year ended April 30, 2006  
|---------------------------
|                           
|Net Sales                  
|Depreciation               
|Operating profit (loss) (a)
|Capital Expenditures       
|Interest, net              
|Other income               
|Income before tax          
|Income taxes               
|Net profit                 
|Identifiable assets        
|Year ended April 30, 2005  
|                           
|Net Sales                  
|Depreciation               
|Operating profit (loss) (a)
|Capital Expenditures       
|Interest, net              
|Other income               
|Income before tax          
|Income taxes               
|Net profit                 
|Identifiable assets        

|Year ended April 30, 2004
|-------------------------
|                         
|Net Sales                
|Depreciation             
|Operating profit (a)     
|Capital Expenditures     
|Interest, net            
|Other income             
|Income before tax        
|Income taxes             
|Net profit               
|Identifiable assets      

|
|



|(a) 	Operating expenses not specifically identifiable are allocated based upon sales, costs of sales, square footage or 		other factors as considered appropriate.
|------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Major Customers:  Sales to major customers (10 percent or more of consolidated sales) were as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
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|Avionics                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Indian Management Services                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|*Sales represented less than 10% of consolidated sales.11.  SELF FUNDED INSURANCEIn an effort to control our insurance costs and maintain quality health care coverage for our employees our health insurance policy became self funded on April 1, 2006, as the Butler National Corporation Employee Health Care Plan.  The Plan has contracted with a managed care network of medical providers whose members have agreed to charge the Plan reduced or discounted charges for covered services provided to our employees and their families.  Although our employees have the freedom to choose to receive care from any Physician, Hospital or other medical care provider, as a general rule the amount or percentage of an otherwise covered expense payable by the Plan will vary, depending on whether the provider from whom the employee receives care is a member of the Plan's PPO network(s).  Generally, the Plan will pay a higher percentage of a covered expense if the care is received by a network provider.  The Plan Document, through a third party administrator controls all determinations related to coverage.  
To be eligible for coverage under this Plan you must be both an Employee and an eligible employee.  An eligible employee must be regularly scheduled to work at least 30 hours per week, must have completed at least three months of employment and pay the employee's contribution share of the cost.  Coverage is effective at 12:01 a.m. on the first day of the month coincident with or first following the date of eligibility.
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12.  SUMMARY OF QUARTERLY FINANCIAL INFORMATION (UNAUDITED)The following table sets forth selected unaudited financial information for each quarter of fiscal 2006, 2005 and 2004 (in thousands, except per share amounts).
|2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Revenue                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Operating Income (Loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Nonoperating Income (Expense)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Net Income (Loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Basic Earnings (Loss) per Share*                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Diluted Earnings (Loss) per Share*                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|*Rounded to nearest tenth                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|2005                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Revenue                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Operating Income (Loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Nonoperating Income (Expense)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Net Income (Loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Basic Earnings (Loss) per Share*                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Diluted Earnings (Loss) per Share*                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|*Rounded to nearest tenth                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|2004                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Revenue                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Operating Income (Loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Nonoperating Income (Expense)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Net Income (Loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Basic Earnings (Loss) per Share*                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Diluted Earnings (Loss) per Share*                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|*Rounded to nearest tenth                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              

The individual quarter and fiscal year earnings per share are presented as shown in our quarterly and annual filings with the Securities and Exchange Commission.  These numbers are rounded to the nearest tenth.



|SCHEDULE II                                                 
|------------------------------------------------------------
|                                                            
|BUTLER NATIONAL CORPORATION AND SUBSIDIARIES                
|                                                            
|SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
|                                                            
|FOR THE YEARS ENDED APRIL 30, 2006, 2005 AND 2004           

|                                                                                |   | Balance at Beginning of Year |   | Additions Charged to Costs and Expenses |   | Deductions |         | Balance at End of Year
|------------------------------------------------------------------------------- | - | ---------------------------- | - | --------------------------------------- | - | ---------- | ------- | ----------------------
|Description                                                                     |   |                              |   |                                         |   |            |         |                       
|Year ended April 30, 2006                                                       |   |                              |   |                                         |   |            |         |                       
|Allowance for doubtful accounts                                                 | $ | 88,250                       | $ | 61,327                                  | $ |            | -       | $                     
|Reserve for inventory obsolescence                                              |   | 395,020                      |   | 36,756                                  |   |            | -       |                       
|Reserve for Indian gaming development                                           |   | 2,912,440                    |   |                                         | - |            |         | -                     
|Deferred interest (1)                                                           |   | 54,404                       |   |                                         | - |            | 22,784  |                       
|Income tax valuation allowance                                                  |   | 2,068,000                    |   |                                         | - |            | 229,000 |                       
|                                                                                |   |                              |   |                                         |   |            |         |                       
|Year ended April 30, 2005                                                       |   |                              |   |                                         |   |            |         |                       
|Allowance for doubtful accounts                                                 | $ | 25,576                       | $ | 62,674                                  | $ |            | -       | $                     
|Reserve for inventory obsolescence                                              |   | 346,311                      |   | 48,709                                  |   |            | -       |                       
|Reserve for Indian gaming development                                           |   | 2,712,440                    |   | 200,000                                 |   |            | -       |                       
|Deferred interest (1)                                                           |   | 85,885                       |   |                                         | - |            | 31,481  |                       
|Income tax valuation allowance                                                  |   | 3,036,000                    |   |                                         | - |            | 968,000 |                       
|                                                                                |   |                              |   |                                         |   |            |         |                       
|Year ended April 30, 2004                                                       |   |                              |   |                                         |   |            |         |                       
|Allowance for doubtful accounts                                                 | $ | 10,719                       | $ | 14,857                                  | $ |            | -       | $                     
|Reserve for inventory obsolescence                                              |   | 207,335                      |   | 138,976                                 |   |            | -       |                       
|Reserve for Indian gaming development                                           |   | 2,718,928                    |   | 89,523                                  |   | 96,011     |         | 2,712,440             
|Deferred interest (1)                                                           |   | 126,000                      |   |                                         | - |            | 40,115  |                       
|Income tax valuation allowance                                                  |   | 3,110,000                    |   |                                         | - |            | 74,000  |                       
|                                                                                |   |                              |   |                                         |   |            |         |                       
|                                                                                |   |                              |   |                                         |   |            |         |                       
|                                                                                |   |                              |   |                                         |   |            |         |                       
|                                                                                |   |                              |   |                                         |   |            |         |                       
|(1) Interest to be paid as part of the note payable on discontinued operations.