Source: https://www.federalregister.gov/documents/2004/01/06/04-240/special-conditions-polskie-zaklady-lotnicze-pzl-mielec-model-m28-05-protection-of-systems-for-high
Timestamp: 2018-03-19 16:55:02
Document Index: 555860474

Matched Legal Cases: ['art 21', '§\u200921', 'art 23', 'art 34', 'art 36', '§\u200921']

Federal Register :: Special Conditions; Polskie Zaklady Lotnicze (PZL)-Mielec, Model M28 05; Protection of Systems for High Intensity Radiated Fields (HIRF)
Special Conditions; Polskie Zaklady Lotnicze (PZL)-Mielec, Model M28 05; Protection of Systems for High Intensity Radiated Fields (HIRF)
The effective date of these special conditions is December 18, 2003. Comments must be received on or before February 5, 2004.
Docket No. CE202, Special Condition 23-142-SC
https://www.federalregister.gov/d/04-240 https://www.federalregister.gov/d/04-240
Start Preamble Start Printed Page 488
These special conditions are issued to Polskie Zaklady Lotnicze (PZL)-Mielec, for a Type Certificate for the M28 05 Skytruck airplane. This airplane will have novel and unusual design features when compared to the state of technology envisaged in the applicable airworthiness standards. These novel and unusual design features include the installation of electronic flight instrument system (EFIS) displays and Attitude Heading Reference System (AHRS) for which the applicable regulations do not contain adequate or appropriate airworthiness standards for the protection of these systems from the effects of high intensity radiated fields (HIRF). These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to the airworthiness standards applicable to these airplanes.
Comments may be mailed in duplicate to: Federal Aviation Administration, Regional Counsel, ACE-7, Attention: Rules Docket Clerk, Docket No. CE202, Room 506, 901 Locust, Kansas City, Missouri 64106. All comments must be marked: Docket No. CE202. Comments may be inspected in the Rules Docket weekdays, except Federal holidays, between 7:30 a.m. and 4 p.m.
The FAA has determined that notice and opportunity for prior public comment hereon are impracticable because these procedures would significantly delay issuance of the approval design and, thus, delivery of the affected aircraft. In addition, the substance of these special conditions has been subject to the public comment process in several prior instances with no substantive comments received. The FAA, therefore, finds that good cause exists for making these special conditions effective upon issuance.
Interested persons are invited to submit such written data, views, or arguments, as they may desire. Communications should identify the regulatory docket or notice number and be submitted in duplicate to the address specified above. All communications received on or before the closing date for comments will be considered by the Administrator. The special conditions may be changed in light of the comments received. All comments received will be available in the Rules Docket for examination by interested persons, both before and after the closing date for comments. A report summarizing each substantive public contact with FAA personnel concerning this rulemaking will be filed in the docket. Commenters wishing the FAA to acknowledge receipt of their comments submitted in response to this notice must include a self-addressed, stamped postcard on which the following statement is made: “Comments to Docket No. CE202.” The postcard will be date stamped and returned to the commenter.
HIRF protection is recognized as a Certification Review Item (CRI) under the Bilateral Aviation Agreement in place between the FAA and the Polish Certification Authority, or CAO. As part of the FAA validation process for issuance of a Type Certificate in the United States for foreign applicants, the FAA is issuing these special conditions to address special certification review items for novel and unusual features of the PZL-Mielec M28 05 Skytruck. The proposed type design incorporates novel or unusual design features such as an EFIS and AHRS that are vulnerable to HIRF external to the airplane.
Under the provisions of 14 CFR part 21, § 21.17 for TC, PZL-Mielec, must show that the M28 05 Skytruck aircraft meets the following provisions, or the applicable regulations in effect on the date of application for the M28 05 Skytruck: 14 CFR part 23, dated February 1, 1965, as amended through Amendment 23-42, effective February 4, 1991; 14 CFR part 34, dated September 10, 1990, as amended through Amendment 34-1, effective July 31, 1995; and 14 CFR part 36, dated December 1, 1969, as amended through amendment in effect on the date of issuance of the U.S. type certificate (currently Amendment 36-21, effective December 28, 1995); exemptions, if any; and the special conditions adopted by this rulemaking action.
PZL-Mielec plans to incorporate certain novel and unusual design features into an airplane for which the airworthiness standards do not contain adequate or appropriate safety standards for protection from the effects of HIRF. These features include EFIS, which are susceptible to the HIRF environment, that were not envisaged by the existing regulations for this type of airplane.
Furthermore, the HIRF environment has undergone a transformation that was Start Printed Page 489not foreseen when the current requirements were developed. Higher energy levels are radiated from transmitters that are used for radar, radio, and television. Also, the number of transmitters has increased significantly. There is also uncertainty concerning the effectiveness of airframe shielding for HIRF. Furthermore, coupling to cockpit-installed equipment through the cockpit window apertures is undefined.
*The field strengths are expressed in terms of peak root-mean-square (rms) values.
As discussed above, these special conditions are applicable to PZL-Mielec in Poland. Should PZL-Mielec apply at a later date for a change to the type certificate to include another model incorporating the same novel or unusual design feature, the special conditions would apply to that model as well under the provisions of § 21.101.
Accordingly, pursuant to the authority delegated to me by the Administrator, the following special conditions are issued as part of the type certification basis for the PZL-Mielec M28 05 Skytruck airplane.
Issued in Kansas City, Missouri on December 18, 2003.
[FR Doc. 04-240 Filed 1-5-04; 8:45 am]