Source: https://www.federalregister.gov/documents/2005/06/20/05-11880/airworthiness-directives-the-lancair-company-model-lc41-550fg-airplanes
Timestamp: 2018-04-24 05:53:53
Document Index: 530144720

Matched Legal Cases: ['art 43', 'art 43', 'art 1', 'art 2', 'art 2', 'art 51']

A Rule by the Federal Aviation Administration on 06/20/2005
This AD becomes effective on June 21, 2005.
70 FR 35370
05-11880
https://www.federalregister.gov/d/05-11880 https://www.federalregister.gov/d/05-11880
The FAA is adopting a new airworthiness directive (AD) for certain The Lancair Company (Lancair) Model LC41-550FG airplanes. This AD requires both visual and dye penetrant inspections of the elevator torque tube assembly for cracks. If a crack is found, this AD requires replacement with a modified assembly that incorporates a steel doubler. This AD also requires replacement of the modified elevator torque tube assembly every 300 hours time-in-service or 18 months (whichever occurs first). This AD results from cracks found in the weld area of the elevator torque tube assembly. We are issuing this AD to detect and correct cracks in the elevator torque tube assembly, which could result in failure of the elevator torque tube assembly and subsequent loss of control of the airplane.
As of June 21, 2005, the Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulation.
We must receive any comments on this AD by August 10, 2005.
To view the comments to this AD, go to http://dms.dot.gov. The docket number is FAA-2005-21357.
What events have caused this AD? Maintenance personnel found a large crack in the weld area on the elevator torque tube assembly during an elevator disassembly of a Lancair Model LC41-550FG airplane. The airplane had only 54 hours total time-in-service.
This incident prompted an inspection of the elevator torque tube assemblies held in inventory at Lancair. The inspection revealed 70 percent of the factory inventory had cracks.
A combination of design aspects and manufacturing flaws caused the cracks. These flaws lead to rapid fatigue failure of the elevator torque tube assembly.
What is the potential impact if FAA took no action? Cracks in the elevator torque tube assembly could cause the elevator torque tube assembly to fail. This failure could result in loss of control of the airplane.
Is there service information that applies to this subject? Lancair has issued Mandatory Service Bulletin No. SB-05-005A, dated May 20, 2005. Start Printed Page 35371
What are the provisions of this service information? The service bulletin includes procedures for inspecting, both visually and with dye penetrant, the elevator torque tube assemblies for cracks. The service bulletin also includes procedures for replacing and reworking cracked elevator torque tube assemblies.
Since the unsafe condition described previously is likely to exist or develop on other Lancair Model LC41-550FG airplanes of the same type design, we are issuing this AD to prevent failure of the elevator torque tube assembly. This failure could cause loss of control of the airplane.
What does this AD require? This AD requires incorporation of the actions in the previously-referenced service bulletin.
Will I have the opportunity to comment before you issue the rule? This AD is a final rule that involves requirements affecting flight safety and was not preceded by notice and an opportunity for public comment; however, we invite you to submit any written relevant data, views, or arguments regarding this AD. Send your comments to an address listed under ADDRESSES. Include “Docket No. FAA-2005-21357; Directorate Identifier 2005-CE-29-AD” in the subject line of your comments. If you want us to acknowledge receipt of your mailed comments, send us a self-addressed, stamped postcard with the docket number written on it; we will date-stamp your postcard and mail it back to you. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the rule that might suggest a need to modify it. If a person contacts us through a nonwritten communication, and that contact relates to a substantive part of this AD, we will summarize the contact and place the summary in the docket. We will consider all comments received by the closing date and may amend the AD in light of those comments.
We prepared a summary of the costs to comply with this AD and placed it in the AD Docket. You may get a copy of this summary by sending a request to us at the address listed under ADDRESSES. Include “AD Docket FAA-2005-21357; Directorate Identifier 2005-CE-29-AD” in your request.
2005-12-20 The Lancair Company: Amendment 39-14136; Docket No. FAA-2005-21357; Directorate Identifier 2005-CE-29-AD.
(a) This AD becomes effective on June 21, 2005.
(c) This AD affects Model LC41-550F airplanes, serial numbers 41001 through 41082, that are certificated in any category.
(d) This AD results from cracks found in the weld area of the elevator torque tube assembly. We are issuing this AD to detect and correct cracks in the elevator torque tube assembly, which could result in failure of the elevator torque tube assembly and subsequent loss of control of the airplane.
The Lancair Company Certified Aircraft Mandatory Service Bulletin SB-05-005A, Model 400, dated May 20, 2005, allows the pilot to perform the visual inspection of the elevator torque tube assembly. The Federal Aviation Regulations (14 CFR 43.3) only allow the pilot to perform preventive maintenance as described in 14 CFR part 43, App. A, paragraph (c). These visual inspections are not considered preventive maintenance under 14 CFR part 43, App. A, paragraph (c). Therefore, an appropriately-rated mechanic must perform all actions of this AD.
(1) Visually inspect the area of weld joining the torque tube to the elevator end rib for cracks Before further flight after June 21, 2005 (the effective date of this AD), and before each flight until the action required in paragraph (e)(2) of this AD is done until a crack is found, whichever occurs first. It is acceptable to do the dye penetrant inspection and modification required in paragraph (e)(2) of this AD before further flight and eliminate the need for the visual inspection(s). Follow Part 1 of The Lancair Company Certified Aircraft Mandatory Service Bulletin SB-05-005A, Model 400, dated May 20, 2005.
(2) Do a dye penetrant inspection of the area of weld joining the torque tube to the elevator end rib for cracks and modify the elevator torque tube assembly by installing a steel doubler Within 10 hours TIS after June 21, 2005 (the effective date of this AD). Doing the dye penetrant inspection and modification terminates the repetitive visual inspection required in paragraph (e)(1) of this AD. This modified elevator torque tube assembly has a safe limit of 300 hours TIS or 18 months after modification, whichever occurs first, and you must replace it at that interval. Follow Part 2 of The Lancair Company Certified Aircraft Mandatory Service Bulletin SB-05-005A, Model 400, dated May 20, 2005, and Revision B to Chapter 4 of Maintenance Manual RC050001, dated May 25, 2005.
(3) Replace the elevator torque tube assembly with a new assembly that incorporates a steel doubler in the area of weld joining the torque tube to the elevator end rib Any time a crack is found during any inspection required in paragraphs (e)(1) and (e)(2) of this AD. You may do the replacement sooner if desired, in which case, you may discontinue the inspections in paragraphs (e)(1) and (e)(2) of this AD. The new replacement assembly has a safe life limit of 300 hours TIS or 18 months after replacement, whichever occurs first, and you must replace it at that interval. Follow Part 2 of The Lancair Company Certified Aircraft Mandatory Service Bulletin SB-05-005A, Model 400, dated May 20, 2005, and Revision B to Chapter 4 of Maintenance Manual RC050001, dated May 25, 2005.
The compliance times in this AD take precedence over the compliance times in the service information.
(g) You must do the actions required by this AD following the instructions in The Lancair Company Certified Aircraft Mandatory Service Bulletin SB-05-005A, Model 400, dated May 20, 2005. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. To get a copy of this service information, contact The Lancair Company 22550 Nelson Road, Bend Oregon 97701; telephone: (541) 330-4191; e-mail: product_support@lancair.com. To review copies of this service information, go to the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, go to: http://www.archives.gov/​federal_​register/​code_​of_​federal_​regulations/​ibr_​locations.html or call (202) 741-6030. To view the AD docket, go to the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-001 or on the Internet at http://dms.dot.gov. The docket number is FAA-05-21357; Directorate Identifier 2005-CE-29-AD.
Issued in Kansas City, Missouri, on June 10, 2005.
[FR Doc. 05-11880 Filed 6-17-05; 8:45 am]