Summary
The FAA proposes to adopt a new airworthiness directive (AD) for all Safran Helicopter Engines, S.A. (Safran) (type certificate previously held by Turbomeca, S.A.) Model Makila 1A, Makila 1A1, and Makila 1A2 engines. This proposed AD was prompted by a determination that the accumulated service life of certain critical parts was underestimated. This proposed AD would require determining the recalculated service life of certain critical parts, would require replacing the parts if necessary, and would also specify conditions for installing the parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.