AD 2012-18-18
Effective 10/24/2012 · Published 09/19/2012
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Summary
We are superseding an existing airworthiness directive (AD) for certain Turbomeca S.A. Arriel 2B and 2B1 turboshaft engines. That AD currently requires accomplishment of the TU166 modification. This new AD requires adding the Arriel 2S2 and 2C2 engines to the applicability of engines requiring the TU166 modification with different compliance times. This AD was prompted by reports of an accident involving a twin-engi…