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Tue, Feb 03, 2015

AD: Technify Motors GmbH Reciprocating Engines

AD NUMBER: 2015-02-01

PRODUCT: All Technify Motors GmbH (TMG) models TAE 125-01 and TAE 125-02-99 reciprocating engines with certain part number (P/N) and serial number (S/N) clutch assemblies installed.

ACTION: Final Rule; Request for comments

SUMMARY: The FAA is superseding airworthiness directive (AD) 2011-23-01 for the product listed above.

AD 2011-23-01 required replacement of certain P/N and S/N clutch assemblies. This AD requires the same actions but expands the population of affected P/N and S/N clutch assemblies.

This AD was prompted by an additional report of a clutch assembly that malfunctioned due to disk springs that received a nonconforming heat treatment process.

The FAA is issuing this AD to prevent failure of the clutch assembly, which could lead to failure of the engine, in-flight shutdown, and loss of control of the airplane.

DATES: This AD is effective February 13, 2015. Comments must be received by March 16, 2015.

FMI: AD

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