Summary
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.
Directive Details
AD Number
FAA-2016-9281
Document Number
2016-27771
Type
Rule
Publication Date
November 25, 2016
Effective Date
December 12, 2016
Affected Manufacturer
Sikorsky Aircraft Corporation
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2016-9281
Topics
Official Documents
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