AD 2013-10-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | Deutschland GmbH | Airworthiness Directives; Eurocopter Deutschland GmbH Helicopters |
Unsafe Condition
A short circuit on the yaw Smart Electro-Mechanical Actuator (SEMA) 'ACTIV' input to ground can lead to the seizure of all SEMA units. Combined with an inoperative Autotrim in Pitch or Roll, or combined with an inoperative Autotrim in Cyclic and Yaw axis, this could significantly reduce the pilot's reaction time to stabilize the helicopter, resulting in possible loss of helicopter control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Insert a statement into the operating limitations section of the MBB-BK 117C-2 Rotorcraft Flight Manual prohibiting operation under IFR or Night VFR with the autotrim inoperative in pitch or roll, or combined inoperative autotrim in cyclic and yaw axis.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 25 hours time-in-service (TIS) or 30 days, whichever comes first.
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Affected Aircraft
Eurocopter Deutschland GmbH Model MBB-BK 117 C-2 helicopters, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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