[Federal Register Volume 71, Number 130 (Friday, July 7, 2006)]
[Notices]
[Pages 38684-38685]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E6-10600]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Proposed Advisory Circular 120-YY, Widespread Fatigue Damage on 
Metallic Structure

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of availability of proposed Advisory Circular (AC) 120-
YY; extension of comment period.

-----------------------------------------------------------------------

SUMMARY: This action extends the comment period stated in the Notice of 
Availability of proposed Advisory Circular (AC) 120-YY, ``Widespread 
Fatigue Damage on Metallic Structure,'' that was published on May 22, 
2006. In that document, the FAA announced the availability of and 
request for comments on proposed revisions to an AC which provides 
guidance to design approval holders for certain transport category 
airplanes related to repairs and alterations to preclude widespread 
fatigue damage.

DATES: Comments must be received by September 18, 2006.

ADDRESSES: Send all comments on this proposed AC to: Walter Sippel, 
Airframe/Cabin Safety Branch, ANM-115, FAA, Transport Airplane 
Directorate, Aircraft Certification Service, 1601 Lind Avenue, SW., 
Renton, WA 98055-4056. Comments may be inspected at the above address 
between 7:30 a.m. and 4 p.m. weekdays, except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Madeleine Kolb, Standardization 
Branch, ANM-113, at the address above, telephone (425) 227-1134.

SUPPLEMENTARY INFORMATION:

Comments Invited

    Interested persons are invited to comment on the proposed AC by 
sending such written data, views, or

[[Page 38685]]

arguments, as they may desire. Commenters should identify AC 120-YY and 
send comments in duplicate to the address specified above. All 
communications received on or before the closing date for comments will 
be considered before the final AC is issued. The proposed AC can be 
found and downloaded from the Internet at the AIR Web site, http://www.faa.gov/aircraft/draft_docs. A paper copy of the proposed AC may 
be obtained by contacting the person named above under the caption FOR 
FURTHER INFORMATION CONTACT.

Background

    On May 12, 2006, the Federal Aviation Administration (FAA) posted 
proposed AC 120-YY on the AIR Web site and requested comments. On May 
22, 2006, we published a ``Notice of Availability of Proposed Advisory 
Circular (AC) 120-YY, and request for comments,'' in the Federal 
Register (71 FR 29377). This AC provides guidance on compliance with 
the proposed rule entitled ``Widespread Fatigue Damage,'' which was 
published on April 18, 2006, (71 FR 19928). Comments on proposed AC 
120-YY were to be received by July 17, 2006.
    Five petitioners, the Air Transport Association of America, Inc. 
(ATA), Airbus, the Cargo Airline Association (CAA), Boeing Commercial 
Airplanes, and National Air Carrier Association, Inc. (NACA), have 
asked the FAA to extend the comment period for the proposed AC. Each 
petitioner requested a 90-day extension to provide enough time to 
evaluate the proposed AC and related rulemaking and prepare comments to 
send to the FAA.
    The FAA concurs with the petitioners' requests for an extension of 
the comment period on proposed AC 120-YY, but we believe that an 
extension of 90 days would be excessive. The FAA concludes that an 
additional 60 days would be adequate for the petitioners to review and 
comment on proposed AC 120-YY and, accordingly, extends the comment 
period to September 18, 2006. That date corresponds to the comment 
period extension date, announced in a separate Federal Register notice 
to be published today for the associated proposed rule, ``Widespread 
Fatigue Damage.''

Extension of Comment Period

    For the reasons provided in this notice, the FAA believes that good 
cause exists for extending the comment period for proposed AC 120-YY to 
September 18, 2006. Absent unusual circumstances, the FAA does not 
anticipate any further extension of the comment period for this 
proposed AC.

    Issued in Washington, DC, June 29, 2006.
John M. Allen,
Acting Director, Flight Standards Service, Aviation Safety.
Dorenda D. Baker,
Acting Director, Aircraft Certification Service, Aviation Safety.
[FR Doc. E6-10600 Filed 7-6-06; 8:45 am]
BILLING CODE 4910-13-P