Airworthiness Directive · Amendment 39-17458 · Autopilot dispatch restriction
Eurocopter Deutschland GmbH Helicopters
This AD applies to Eurocopter Deutschland GmbH (ECD) Model MBB-BK 117 C-2 helicopters, certificated in any category.
We are adopting a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (ECD) Model MBB-BK 117 C-2 helicopters. This AD requires revising the operating limitations to prohibit flights under instrument flight rules (IFR) or under night visual flight rules (VFR) when the autotrim is inoperative. The actions of this AD are intended to prevent a workload situation whereby stabilizing the helicopter in flight would be difficult if not impossible, resulting in possible loss of helicopter control.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Within 25 hours time-in-service or 30 days, whichever comes first, revise the Operating Limitations section of the MBB-BK 117C-2 Rotorcraft Flight Manual (RFM), under paragraph 2.2, Kinds of Operations, by inserting a copy of this AD into the RFM or by making pen and ink changes to add the following statement:
Dispatch under Instrument Flight Rules (IFR) or night Visual Flight Rules (VFR) with the Autotrim inoperative in Pitch or Roll or a combined inoperative Autotrim in Cyclic and Yaw axis is PROHIBITED.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
