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| Thursday, May 31, 2007 |
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Airworthiness Directives; Sikorsky Aircraft Corporation Model S- 76A, B, and C Helicopters
By FlyingNews @ 12:39 PM :: 293 Views ::
0 Comments :: FAA
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Docket No. FAA-2007-28241; Directorate Identifier 2007-SW-07-AD;
Amendment 39-15062; AD 2007-11-05]
RIN 2120-AA64
Airworthiness Directives; Sikorsky Aircraft Corporation Model S- 76A, B, and C Helicopters
ACTION: Final rule; request for comments.
SUMMARY: This amendment adopts a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, B, and C helicopters. This action requires a one-time ultrasonic inspection of the main rotor shaft assembly (M/R shaft) for cracking. This amendment is prompted by the discovery of cracking that occurred during the manufacturing of certain M/R shafts. The actions specified in this AD are intended to detect cracking in the M/R shaft, which could result in separation of the main rotor and subsequent loss of control of the helicopter.
DATES: Effective June 15, 2007.
The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of June 15, 2007.
Comments for inclusion in the Rules Docket must be received on or before July 30, 2007.
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