Source: https://www.federalregister.gov/documents/2006/06/19/E6-9590/special-conditions-sagem-avionics-inc-electronic-flight-instrument-system-efis-installation-in
Timestamp: 2017-09-20 13:14:32
Document Index: 286985725

Matched Legal Cases: ['art 21', '§\u200921', '§\u200923', '§\u200923', '§\u200923', '§\u200923', '§\u200923', '§\u200923', '§\u200923', '§\u200923', '§\u200923', '§\u200921']

Federal Register :: Special Conditions; Sagem Avionics Inc.; Electronic Flight Instrument System (EFIS) Installation in Cessna C-180; Protection of Systems From High Intensity Radiated Fields (HIRF)
Special Conditions; Sagem Avionics Inc.; Electronic Flight Instrument System (EFIS) Installation in Cessna C-180; Protection of Systems From High Intensity Radiated Fields (HIRF)
The effective date of these special conditions is June 5, 2006. Comments must be received on or before July 19, 2006.
71 FR 35148
Docket No. CE246, Special Condition 23-186-SC
E6-9590
https://www.federalregister.gov/d/E6-9590 https://www.federalregister.gov/d/E6-9590
These special conditions are issued to Sagem Avionics, Inc., 16923 Meridian East, Puyallup, WA 98375, for a Supplemental Type Certificate for the Cessna C-180 airplane. This airplane will have novel and unusual design features when compared to the state of technology envisaged in the applicable airworthiness standards. This novel and unusual design feature will include the installation of a two panel electronic display system, or Electronic Flight Instrument System (EFIS), manufactured by Sagem. The installation also includes components associated with this display system. 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. CE246, Room 506, 901 Locust, Kansas City, Missouri 64106. All comments must be marked: Docket No. CE246. Comments may be inspected in the Rules Docket weekdays, except Federal holidays, between 7:30 a.m. and 4 p.m.
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. CE246.” The postcard will be date stamped and returned to the commenter.
In late June 2005, Sagem made an application to the FAA for a new Supplemental Type Certificate for the Cessna C-180, which is currently approved under TC No. 5A6. The proposed modification incorporates novel or unusual design features that are vulnerable to HIRF external to the airplane.
Under the provisions of 14 CFR part 21, § 21.101, Sagem must show that the Cessna C-180 aircraft meet the provisions of the original certification basis for each model, as listed on the Type Data Sheet 5A6, and the additional provisions & applicable regulations in effect on the date of application for this Supplemental Type Change. The additional systems related provisions that cover the EIFS installation include: § 23.1301, § 23.1309, § 23.1311, § 23.1321, § 23.1322, § 23.1323, § 23.1331, § 23.1353, and § 23.1357 at the amendment level appropriate for the application date; exemptions, if any; and the special conditions adopted by this rulemaking action. Additional information regarding the certification basis for this STC is available from the applicant.
Sagem 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. Start Printed Page 35149These features include dual EFIS systems and associated components, potentially susceptible to the HIRF environment that were not envisaged by the existing regulations for this type of airplane.
The combined effect of the technological advances in airplane design and the changing environment has resulted in an increased level of vulnerability of electrical and electronic systems required for the continued safe flight and landing of the airplane. Effective measures against the effects of exposure to HIRF must be provided by the design and installation of these systems. The accepted maximum energy levels in which civilian airplane system installations must be capable of operating safely are based on surveys and analysis of existing radio frequency emitters. These special conditions require that the airplane be evaluated under these energy levels for the protection of the electronic system and its associated wiring harness. These external threat levels, which are lower than previous required values, are believed to represent the worst case to which an airplane would be subjected in the operating environment.
As discussed above, these special conditions are applicable to the Cessna C-180 airplanes. Should Sagem apply at a later date for a supplemental type certificate to modify any other model on the same type certificate to incorporate the same novel or unusual design feature, the special conditions would apply to that model as well under the provisions of § 21.101.
Authority: 49 U.S.C. 106(g), 40113 and 44701; 14 CFR 1.16 and 21.101; and 14 CFR 11.38 and 11.19.
Accordingly, pursuant to the authority delegated to me by the Administrator, the following special conditions are issued as part of the type Start Printed Page 35150certification basis for the Cessna C-180 airplanes modified by Sagem to add dual EFIS installations.
Issued in Kansas City, Missouri on June 5, 2006.
[FR Doc. E6-9590 Filed 6-16-06; 8:45 am]