[Federal Register Volume 74, Number 144 (Wednesday, July 29, 2009)]
[Notices]
[Pages 37762-37763]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E9-17844]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Advisory Circular 33.87-2, Comparative Endurance Test Method To 
Show Durability for Parts Manufacturer Approval of Turbine Engine and 
Auxiliary Power Unit Parts

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of issuance of advisory circular.

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SUMMARY: This notice announces the issuance of Advisory Circular (AC) 
33.87-2, Comparative Endurance Test Method to Show Durability for Parts 
Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts. 
This AC describes a comparative endurance test method to be used for 
certain turbine engine or auxiliary power unit parts when manufactured 
under Parts Manufacturer Approval (PMA). This method may be used when 
PMA applicants introduce changes that could affect the durability of 
their proposed designs. It may also be used when an applicant has 
insufficient comparative data to show that the durability of their 
proposed PMA part is at least equal to the type design. The applicant 
can use this method when requesting PMA under test and computation, per 
part 21 of Title 14 of the Code of Federal Regulations, and using the 
comparative test and analysis approach detailed in Federal Aviation 
Administration Order 8110.42, Part Manufacturer Approval Procedures.

DATES: The Engine and Propeller Directorate issued AC 33.87-2 on June 
25, 2009.

FOR FURTHER INFORMATION CONTACT: The Federal Aviation Administration, 
Attn: Karen M. Grant, Engine and Propeller Standards Staff, ANE-111, 12 
New England Executive Park, Burlington, MA 01803-5299; telephone: (781) 
238-7119; fax: (781) 238-7199; e-mail: [email protected].
    We have filed in the docket all substantive comments received, and 
a report summarizing them. If you wish to review the docket in person, 
you may go

[[Page 37763]]

to the above address between 9 a.m. and 5 p.m., Monday through Friday, 
except Federal holidays. If you wish to contact the above individual 
directly, you can use the above telephone number or e-mail address 
provided.
    How to Obtain Copies: A paper copy of AC 33.87-2 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 Ave., 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.faa.gov/regu1atjpjpplicies (then click on ``Advisory Circulars'').

    Authority:  49 U.S.C. 106(g), 40113, 44701-44702, 44704.

    Issued in Burlington, Massachusetts on June 25, 2009.
Peter White,
Acting Manager, Engine and Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. E9-17844 Filed 7-28-09; 8:45 am]
BILLING CODE 4910-13-M