Summary
We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This AD requires removing from service the tail gearbox center housing (housing) when it has 12,200 or more hours time-in-service (TIS). This AD was prompted by fatigue analysis conducted by Sikorsky that determined the housing required a retirement life. The actions are intended to prevent an unsafe condition on these products.
Directive Details
AD Number
FAA-2015-7095
Document Number
2017-06708
Type
Rule
Publication Date
April 7, 2017
Effective Date
May 12, 2017
Affected Manufacturer
Sikorsky Aircraft Corporation
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2015-7095
Topics
Official Documents
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