[Federal Register Volume 70, Number 29 (Monday, February 14, 2005)]
[Notices]
[Pages 7542-7543]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-2802]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Advisory Circular (AC) 23-22, Guidance for Approved Model List 
(AML) Supplemental Type Certificate (STC) Approval of Part 23 Airplane 
Avionics Installations

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of issuance of advisory circular.

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SUMMARY: This notice announces the issuance of Advisory Circular (AC) 
23-22. This advisory circular (AC) sets guidelines for using the 
Approved Model List (AML) Supplemental Type Certificate (STC) process 
for the installation approval of avionics for 14 CFR, part 23 
airplanes. It also applies to airplanes certified under a prior 
certification basis, such as CAR 3 or bulletin 7-A. Guidance provided 
in this AC applies only to avionics installations using the AML STC 
process. For other types of modifications to part 23 airplanes seeking 
to use the AML STC process, the Aircraft Certification Office (ACO) 
should coordinate with the Small Airplane Directorate. Avionics AML STC 
guidance provided in this AC addresses the following: (1) Avionics 
eligible for the AML STC process, (2) Model Qualification Process used 
by the STC holder and the FAA to either create or edit the AML, and (3) 
Level of Detail required for the installation instructions for an AML 
STC, including a list of acceptable equipment that can be integrated 
under the STC.
    Material in this AC is neither mandatory nor regulatory in nature 
and does not constitute a regulation. In addition, this material is not 
to be construed as having any legal status and should be treated 
accordingly. However, it is designed to provide standardization 
guidelines for AML STC approvals. The AML STC process may be used 
whenever the ACO and the applicant agree that it is suitable. This AC 
is not applicable to any products certified under part 25, 27, or 29.
    The draft advisory circular was issued for Public Comment on 
October 8, 2004 (69 FR 60452). When possible,

[[Page 7543]]

comments received were used to modify the draft advisory circular.

DATES: Advisory Circular (AC) 23-22 was issued by the Manager, Small 
Airplane Directorate on January 27, 2005.
    How To Obtain Copies: A paper copy of AC 23-22 may be obtained by 
writing to the U.S. Department of Transportation, Subsequent 
Distribution Office, DOT Warehouse, SVC-121.23, Ardmore East Business 
Center, 3341Q 75th Avenue, Landover, MD 20785, telephone 301-322-5377, 
or by faxing your request to the warehouse at 301-386-5394. The AC will 
also be available on the Internet at http://www.airweb.faa.gov/AC.

    Issued in Kansas City, Missouri on January 27, 2005.
David R. Showers,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-2802 Filed 2-11-05; 8:45 am]
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