Airworthiness Directive 2013-12307
one-timeAirworthiness Directives; Eurocopter Deutschland GmbH Helicopters
What this AD requires
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.
Which aircraft AD 2013-12307 applies to
Applies to all MBB-BK 117 C-2 helicopters, certificated in any category; no part/serial restriction stated. Unsafe condition is failure of the autotrim system in pitch or roll, or a combined inoperative autotrim in cyclic and yaw axis.
Whether AD 2013-12307 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.