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Mon, Jan 30, 2012

AD: Thielert Aircraft Engines

AD NUMBER: 2012-02-05

PRODUCT: All Thielert Aircraft Engines GmbH (TAE) TAE 125-02-99 and TAE 125-02-114 reciprocating engines.
SUBJECT: Airworthiness Directive 2012-02-05
ACTION: Final Rule

SUMMARY: This AD was prompted by in-flight engine shutdown incidents reported on airplanes equipped with TAE 125 engines. The FAA is issuing this AD to prevent in-flight engine shutdown, which could result in loss of control of the airplane.

The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, issued EASA AD 2011-0087-E, dated May 12, 2011 (referred to after this as 'the MCAI'), to correct an unsafe condition for the specified products.

The MCAI states:

In-flight engine shutdown incidents have been reported on aeroplanes equipped with TAE 125 engines. Preliminary investigations showed that it was mainly the result of the sensitivity of friction disk Part Number (P/N) 05-7211-K010201 against possible misalignment of gearbox and core engine during assembly. This condition, if not corrected, could result in further cases of engine in-flight shutdown and consequent loss of control of the aeroplane. To address this unsafe condition, Thielert Aircraft Engines GmbH has developed a new friction disk.

DATES: This AD is effective March 2, 2012.

FMI: AD

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