[Federal Register Volume 66, Number 157 (Tuesday, August 14, 2001)]
[Notices]
[Pages 42698-42699]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 01-20431]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Advisory Circular; AC 21.101-1, Advisory Material for the 
Establishment of the Certification Basis of Changed Aeronautical 
Products

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) 
No. 21.101-1, Advisory Material for the Establishment of the 
Certification Basis of Changed Aeronautical Products. The AC provides 
information and guidance concerning an acceptable method, but not the 
only method, by which an applicant establishes the certification basis 
for changed 14 CFR part 25 aeronautical products, including identifying 
the conditions under which it will be necessary to apply for a new type 
certificate. The FAA has issued a final rule, Type Certification 
Procedures for Changed Products that amends the procedural regulations 
for the certification of changes to type certification products. These 
amendments affect changes accomplished through either an amended type 
certificate or a supplemental type certificate. This AC provides 
guidance for determining compliance with those amended procedural 
regulations for the certification of changes to transport category 
airplanes and restricted category airplanes that have been certified 
using transport category regulations.

DATES: Advisory Circular No. 21.101-1 was issued on August 3, 2001.

FOR FURTHER INFORMATION CONTACT: Madeleine Miguel, Aerospace Engineer, 
Certification Procedures Branch, AIR-110, Federal Aviation 
Administration, 800 Independence Ave., SW, Washington, DC 20591; 
telephone number: (202) 267-3777. A copy of the final AC may be 
obtained by accessing

[[Page 42699]]

the FAA's web page at: http://www.airweb.faa.gov/Regulatory and 
Guidance Library/rgAdvisoryCircular.nsf/MainFrame?OpenFrameset.

SUPPLEMENTARY INFORMATION:

Background or Discussion

    Interested parties were given the opportunity to review and comment 
on the draft AC during the proposal and development phases. Notice was 
published in the Federal Register (65 FR 51052), August 22, 2000, to 
announce the availability of, and request comments to, the proposed AC. 
All comments were reviewed and appropriate comments are incorporated in 
the AC.
    This advisory circular provides guidance by which an applicant 
establishes the certification basis for changed 14 CFR part 25 
aeronautical products, including identifying the conditions under which 
it will be necessary to apply for a new type certificate. The FAA has 
issued a final rule, Type Certification Procedures for Changed Products 
that amends the procedural regulations for the certification of changes 
to type certification products. These amendments affect changes 
accomplished through either an amended type certificate or a 
supplemental type certificate.
    This AC provides for determining compliance with those amended 
procedural regulations for the certification of changes to transport 
category airplanes and restricted category airplanes that have been 
certified using transport category regulations.

    Issued in Washington, DC, on August 8, 2001.
David W. Hempe,
Acting Manager, Aircraft Engineering Division.
[FR Doc. 01-20431 Filed 8-13-01; 8:45 am]
BILLING CODE 4910-13-M