airworthiness · Rule · Final rule; request for comments. · Published 2016-03-11 · Effective 2016-03-28 · 81 FR 12799
Document
Document number
2016-05258
Federal Register citation
81 FR 12799
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Sikorsky
Publication date
2016-03-11
Effective date
2016-03-28
FAA docket
Docket No. FAA-2016-4280
Abstract
We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This AD requires certain inspections of the main rotor and tail rotor control pushrods (pushrods). This AD is prompted by a Sikorsky investigation that indicated that some pushrods may have incorrectly installed locking mechanisms. These AD actions are intended to detect an incorrectly installed locking mechanism, which if not corrected, could result in a loose jam nut, failure of the pushrod, loss of main rotor or tail rotor flight control, and consequent loss of helicopter control.