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Wed, Sep 27, 2017

AD: General Electric Company Turboshaft Engines

AD NUMBER: 2017-19-20

PRODUCT: Certain General Electric Company (GE) CT7-8A and CT7-9B model turboshaft engines.

ACTION: Final Rule.

SUMMARY:  This AD was prompted by reports from the manufacturer that the high-pressure compressor (HPC) impeller installed on these engines may have suffered from material degradation during the manufacturing process.

This AD requires removal of the affected HPC impellers.

COST: The FAA estimates  this AD affects 1 engine installed on a helicopter of U.S. registry. The cost to that operator is estimated to be $70,000

DATES: This AD is effective October 27, 2017.

FMI: AD

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