airworthiness · Rule · Final rule. · Published 2017-11-28 · Effective 2018-01-02 · 82 FR 56165
Document
Document number
2017-25558
Federal Register citation
82 FR 56165
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Sikorsky
Publication date
2017-11-28
Effective date
2018-01-02
FAA docket
Docket No. FAA-2017-0491
Abstract
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.