AD 2016-04-14
Effective 04/01/2016 · Published 02/26/2016
Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
Summary
We are adopting a new airworthiness directive (AD) for certain Turbomeca S.A. Arriel 1E2 turboshaft engines. This AD requires removing the tachometer box on affected engines. This AD was prompted by reports of uncommanded in-flight shutdowns (IFSDs). We are issuing this AD to prevent failure of the tachometer box, which could lead to failure of the engine, IFSD, and loss of control of the helicopter.