Division Thielert Piston Engines - AD/THIELERT/1 Amdt 2 - Engine Failure Due to Electrical System Failure - Thielert Piston Engines

AD/THIELERT/1 Amdt 2	Engine Failure Due to ElectricalSystem Failure	5/2005 DM

Applicability:	All TAE125-01 aircraft engines.
Requirement:	1. Modify the electrical power supply system by accomplishing one of the following three modifications in accordance with relevant aircraft manufacturer or supplemental type certificate holder documentation (Thielert Aircraft Engine GmbH Service Bulletin TM TAE 125-008 Revision 2 dated 4 February 2005 also refers):
	a. Replace alternator part number (P/N) 02-7150-55002R2 with alternator P/N 02-7150-55002R3.
	b. For Existing Installations - Replace alternator P/N 02-7150-55002R2 with alternator and alternator regulator sets as follows:
	(i) Diamond aircraft - P/N 02-7150-55008R1 (Alternator Set 14V DAI with ALTREG FF).
	(ii) All other - P/N 02-7150-55016R1 (Alternator Set 14Vwith ALTREG FFL).
	c. Install a stabilising capacitor.
	Note 1: Replacements of alternators on Diamond aircraft in accordance with previous issues of this Directive before the effective date of this Directive are considered acceptable for compliance with this Directive.
	2. Check the actual capacity of the aircraft battery in accordance with Gill Aircraft Battery Service Manual (Gill Document Number Q01-1120) Chapter 7.7 - Continued Airworthiness Determination for Gill Aircraft Batteries.
	3. For new installations the following Alternator Sets must be used:
	a. Diamond aircraft - P/N 02-7150-55800R1 (Alternator Set 14V DAI with ALTREG).
	b. All other - P/N 02-7150-55018R1 (Alternator Set 14Vwith ALTREG).

	Note 2: LBA AD D-2004-457R2 (EASA approval 2005-1968) refers.
Compliance:	For Requirement 1 - At the next 300 hourly inspection, but no later than 30 April 2005.
	For Requirement 2 - At each 100 hourly inspection until Requirement 1 is accomplished.

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