Airworthiness directives › 2005-13-13
AD 2005-13-13 Airworthiness Directives; Sikorsky Aircraft Corporation Model S-92A Helicopters
Models named: S-92A. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model S-92A helicopters, with a gear box output housing, part number (P/N) 92358-06109-043, installed, certificated in any category.
Compliance
Required as indicated, unless accomplished previously. To prevent fatigue failure of the tail gear box output housing, loss of tail rotor drive, and subsequent loss of control of the helicopter, do the following: (a) Before further flight, replace each tail gear box output housing, P/N 92358-06109-043, with 600 or more hours time-in-service (TIS) with an airworthy tail gear box housing with less than 600 hours TIS. Note: Sikorsky Maintenance Manual SA S92A-AWL-000, Airworthiness Limitations and Inspection Requirements, Chapter 4, dated March 3, 2005, contains the limitation for the tail gear box output housing. (b) This AD revises the Airworthiness Limitations section of the maintenance manual by reducing the life limit of the tail gear box output housing from 4500 hours TIS to 600 hours TIS. (c) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. Contact the Boston Aircraft Certification Office, FAA, for information about previously approved alternative methods of compliance. (d) This amendment becomes effective on July 8, 2005. Issued in Fort Worth, Texas, on June 10, 2005. S. Frances Cox, Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 05-12417 Filed 6-22-05; 8:45 am] BILLING CODE 4910-13-P
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1