EASA AD No : 2010-0136 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2010-0136 

Date: 30 June 2010 

Note: This Airworthiness Directive (AD) is issued by EASA, acting in accordance with 

Regulation (EC) No 216/2008 on behalf of the European Community, its Member States and 

of the European third countries that participate in the activities of EASA under Article 66 of 

that Regulation. 

This AD is issued in accordance with EC 1702/2003, Part 21A.3B. In accordance with EC 2042/2003 Annex I, Part M.A.301, the 

continuing airworthiness of an aircraft shall be ensured by accomplishing any applicable ADs. Consequently, no person may 

operate an aircraft to which an AD applies, except in accordance with the requirements of that AD, unless otherwise specified by the 

Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Registry [EC 216/2008, Article 14(4) 

exemption]. 

Type Approval Holder’s Name : 

Thielert Aircraft Engines GmbH 

Type/Model designation(s) : 

TAE 125 series engines 

TCDS Number : EASA E.055 

Foreign AD : Not applicable 

Supersedure : None. 

ATA 72 Engine - Timing Chain - Replacement 

Manufacturer(s): Thielert Aircraft Engines GmbH. 

Applicability: 

TAE 125-02-99, TAE 125-02-114, all serial numbers 

These engines are known to be installed, but not limited to, Diamond DA 40, 

DA 42, DA 42M, Apex DR-400, Cessna C172 and Piper PA28. 

Reason: 

Service experience has shown that fracture of the timing chain has occurred 

due to chain wear. 

This condition, if not corrected, could lead to in-flight cases of engine 

shutdown. 

To address and correct this situation, TAE has developed reinforced timing 

chains. 

For the reason described above, this AD requires the replacement of the 

timing chain. 

Effective Date: 14 July 2010 

Required action(s) 

and Compliance 

Time(s): 

Required as indicated: 

(1) For engines with the following serial numbers: 

From 02-02-01510 to 02-02-01514 inclusive; 

From 02-02-01518 to 02-02-01520 inclusive; 

02-02-01529, 02-02-01717, 02-02-01718, 02-02-01720, 02-02-01721; 

02-02-01727, 02-02-01728; 
EASA AD No : 2010-0136 

EASA Form 110 Page 2/2 

From 02-02-01730 to 02-02-01733 inclusive; 

From 02-02-01739 to 02-02-01752 inclusive. 

(1.1) For engines Time Since New (TSN) having accumulated 

between 500 Flight Hours (FH) and 600 FH inclusive, within 

110 FH after the effective date of this AD or at the next 

maintenance, whichever occurs first, replace the timing chain in 

accordance with Thielert Aircraft Engines SB TM TAE 125-

1010 P1 Initial Issue. 

(1.2) For engines TSN having accumulated 601 FH or more, within 

55 FH after the effective date of this AD or at the next 

maintenance, whichever occurs first, replace the timing chain in 

accordance with Thielert Aircraft Engines SB TM TAE 125-

1010 P1 Initial Issue. 

(2) For all engines not listed in paragraph (1) of this AD: 

Before the engine has reached 910FH or within 55FH after the effective 

date of this AD, whichever occurs later, replace the timing chain in 

accordance with Thielert Aircraft Engines SB TM TAE 125-1010 P1 Initial 

Issue. 

(3) Thereafter, for all engines indicated in the “Applicability” of this AD, if 

installed in single engine aircraft, at intervals not to exceed 910 FH from 

previous replacement, replace the timing chain in accordance with 

Thielert Aircraft Engines SB TM TAE 125-1010 P1 Initial Issue. 

Ref. Publication: 

Thielert Aircraft Engines SB TM TAE 125-1010 P1 Initial Issue dated 01 April 

2010. 

The use of later approved revisions of these documents is acceptable for 

compliance with the requirements of this AD. 

Remarks :

1. If requested and appropriately substantiated, EASA can approve 

Alternative Methods of Compliance for this AD. 

2. This AD was posted on 23 April 2010 as PAD 10-037 for consultation 

until 21 May 2010. The Comment Response Document can be found at 

http://ad.easa.europa.eu/. 

3. Enquiries regarding this AD should be referred to the Airworthiness 

Directives, Safety Management & Research Section, Certification 

Directorate, EASA. E-mail ADs@easa.europa.eu. 

4. For any question concerning the technical content of the requirements in 

this AD, please contact: 

Thielert Aircraft Engines GmbH 

Platanenstraße 14 

D-09350 Lichtenstein, Germany 

Telephone +49-37204-696-0; Fax +49-37204-696-2912; 

E-mail info@centurion-engines.com.