routineRule

AD FAA-2017-0491

Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

Summary

We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A, S-76B, S-76C, and S-76D helicopters. This AD requires inspecting the main rotor (M/R) servo pushrod (pushrod) assembly and applying slippage marks. This AD was prompted by an accident of a Sikorsky Model S-76C helicopter caused by a failed pushrod assembly. The actions of this AD are intended to prevent an unsafe condition on these products.

Directive Details

AD Number

FAA-2017-0491

Document Number

2017-25558

Type

Rule

Publication Date

November 28, 2017

Effective Date

January 2, 2018

Affected Manufacturer

Sikorsky Aircraft Corporation

Criticality

routine

Emergency

Docket ID

Docket No. FAA-2017-0491

Topics

Air transportationAircraftAviation safetyIncorporation by referenceSafety

Official Documents

View PDF View on Federal Register

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