Airworthiness Directive · Amendment 39-18065 · Technify Motors GmbH (Type Certificate Previously Held by Thielert Aircraft Engines GmbH) Reciprocating Engines
Technify Motors GmbH (Type Certificate Previously Held by Thielert Aircraft Engines GmbH) Reciprocating Engines
This AD applies to Technify Motors GmbH (TMG) models TAE 125-01 and TAE 125-02-99 reciprocating engines, with a clutch assembly part number (P/N) listed in paragraphs (c)(i) through (c)(v) of this AD, and with a serial number (S/N) listed in either TMG Service Bulletin (SB) No. TM TAE 125-0021, Revision 2, dated October 13, 2014, or Thielert Aircraft Engines GmbH (TAE) SB No. TM TAE 125-1011 P1, Revision 2, dated August 31, 2011, installed.
(i) P/N 02-7210-11001R11
(ii) P/N 02-7210-11001R11-AT
(iii) P/N 02-7210-11001R13
(iv) P/N 05-7211-K006001
(v) P/N 05-7211-K006002
We are superseding airworthiness directive (AD) 2011-23-01 for 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. 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. We are 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.
After the effective date of this AD:
(1) For engines with affected clutch assemblies that have accumulated 100 hours time since new (TSN) or more, replace the clutch assembly before further flight.
(2) For engines with affected clutch assemblies that have accumulated less than 100 hours TSN, replace the clutch assembly before accumulating 100 hours TSN.
After the effective date of this AD, do not install onto any airplane any engine having a clutch assembly, P/N 02-7210-11001R11, P/N 02-7210-11001R11-AT, P/N 02-7210-11001R13, P/N 05-7211-K006001, or P/N 05-7211-K006002, installed, that has an S/N listed in TMG SB No. TM TAE 125-0021, Revision 2, dated October 13, 2014, or in TAE SB No. TM TAE 125-1011 P1, Revision 2, dated August 31, 2011.
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
