Airworthiness Directive · Amendment 39-17680 · Thielert Aircraft Engines GmbH Reciprocating Engines
Thielert Aircraft Engines GmbH Reciprocating Engines
This AD applies to all Thielert Aircraft Engines GmbH TAE 125-01 reciprocating engines.
We are adopting a new airworthiness directive (AD) for all Thielert Aircraft Engines GmbH TAE 125-01 reciprocating engines. This AD requires applying sealant to close the engine clutch housing (crankcase assembly) opening. This AD was prompted by a report of engine power loss due to engine coolant contaminating the engine clutch. The design of the engine allows the crankcase assembly opening to be susceptible to contamination from external sources. We are issuing this AD to prevent in-flight engine power loss, which could result in loss of control of, and damage to, the airplane.
Unless already done, do the following actions.
(1) After the effective date of this AD at the next annual or 100-hour inspection, whichever comes first, apply sealant to close the engine clutch housing (crankcase assembly) opening.
(2) Thereafter, reapply sealant to the engine clutch housing (crankcase assembly) opening, whenever the sealant is found to be not liquid-tight, or is removed.
(3) Guidance on the sealant and application can be found in Thielert Aircraft Engines GmbH Service Bulletin No.TM TAE 125-0022, dated August 8, 2012.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
