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Thu, Apr 19, 2018

AD: Safran Helicopter Engines, S.A., Turboshaft Engines

AD NUMBER: 2018-07-17

PRODUCT: Certain Safran Helicopter Engines, S.A., Arrius 2B1, 2B1A, 2B2, and 2K1 turboshaft engines.

ACTION: Final rule; request for comments

SUMMARY: This AD requires inspecting the power turbine wheel (PTW) assembly and replacing the PTW if the turbine blade dampers are found missing.

This AD was prompted by the manufacturer reporting a number of PTW assemblies may have been assembled without the blade dampers.

DATES: This AD becomes effective April 27, 2018. Comments must be received by May 29, 2018.

COST: The FAA estimates that this AD affects 46 engines installed on helicopters of U.S. registry. The cost of compliance is estimated as follows:

Records Search: $85 per aircraft.



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