Airworthiness Directives; Eurocopter Deutschland GmbH (ECD) Model MBB-BK 117 C-2 Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2011-11-04 · Effective 2011-11-21 · 76 FR 68299
Document
Document number
2011-27776
Federal Register citation
76 FR 68299
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Eurocopter Deutschland GmbH (ECD) Model MBB-BK 117 C-2
Publication date
2011-11-04
Effective date
2011-11-21
FAA docket
Docket No. FAA-2011-1075
Abstract
This amendment adopts a new airworthiness directive (AD) for ECD Model MBB-BK 117 C-2 helicopters. This action requires revising the Rotorcraft Flight Manual (RFM) by inserting certain temporary pages into the Emergency and Performance Data sections of the RFM to alert the operators to monitor the power display when a generator is deactivated and provides appropriate actions. This amendment is prompted by reports of too high a current flow when one generator is deactivated. The actions specified in this AD are intended to prevent failure of the remaining generator when one generator is deactivated, loss of electrical power, loss of systems necessary for flight safety, and subsequent loss of control of the helicopter.