airworthiness · Rule · Final rule; request for comments. · Published 2016-11-25 · Effective 2016-12-12 · 81 FR 85124
Document
Document number
2016-27771
Federal Register citation
81 FR 85124
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Sikorsky
Publication date
2016-11-25
Effective date
2016-12-12
FAA docket
Docket No. FAA-2016-9281
Abstract
We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation Model S-76D helicopters. This AD requires revising the rotorcraft flight manual (RFM) to prohibit Barometric Altitude Hold (ALT) mode beyond a certain rate of climb or descent. This AD is prompted by a report of the autopilot being unable to maintain level flight during certain flight conditions. The actions specified by this AD are intended to prevent a significant pilot workload increase, pilot disorientation, and subsequent loss of control of the helicopter.