[Federal Register Volume 67, Number 224 (Wednesday, November 20, 2002)]
[Notices]
[Page 70104]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 02-29446]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Proposed Advisory Circular 20-XX, Methodology for Dynamic Seat 
Certification by Analysis for Use in Parts 23, 25, 27, and 29 Airplanes 
and Rotorcraft

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of availability of proposed advisory circular (AC) and 
request for comments.

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SUMMARY: This notice announces the availability of and requests 
comments on a proposed AC, which provides information and guidance 
concerning demonstrating compliance to computer modeling analysis 
techniques validated by dynamic tests. This notice is necessary to give 
all interested persons an opportunity to present their views on the 
proposed AC.

DATES: Comments must be received on or before January 21, 2003.

ADDRESSES: Send all comments on the proposed AC to: Mr. Pat Mullen, 
Federal Aviation Administration, Small Airplane Directorate, Aircraft 
Certification Service, Standards Office (ACE-110), 901 Locust, Room 
301, Kansas City, Missouri 64106.

FOR FURTHER INFORMATION CONTACT: Mr. Pat Mullen, telephone (816) 329-
4128 or fax (816) 329-4090.

SUPPLEMENTARY INFORMATION:

Comments Invited

    Interested persons are invited to comment on the proposed AC by 
submitting such written data, views, or arguments as they may desire. 
Commenters should identify AC 20-XX and submit comments, in duplicate, 
to the address specified above. All communications received on or 
before the closing date for comments will be considered by the Small 
Airplane Directorate before issuing the final AC. The proposed AC can 
be found and downloaded from the Internet at http://www.airweb.faa.gov/DraftAC by taking the following steps: Under ``Search Help'' click on 
``Open for Comment.'' A paper copy of the proposed AC may be obtained 
by contacting the person named above under the caption FOR FURTHER 
INFORMATION CONTACT.

Discussion

    The subject advisory circular describes how to demonstrate 
compliance to the following by computer modeling analysis techniques 
validated by dynamic tests:
    [sbull] Title 14 Code of Federal Regulations (14 CFR) parts 23, 25, 
27, and 29, Sec. Sec.  23.562, 25.562, 27.562, and 29.562.
    [sbull] The Technical Standard Order (TSO) associated with the 
above regulations, TSO-C127/C127a.
    The AC provides guidance on how to validate the computer model and 
under what conditions the model may be used in support of certification 
or TSO approval/authorization. Material in the AC is neither mandatory 
nor regulatory in nature and does not constitute a regulation. In 
addition, the material is not to be construed as having any legal 
status and should be treated accordingly.

    Issued in Kansas City, Missouri on November 8, 2002.
Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 02-29446 Filed 11-19-02; 8:45 am]
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