EASA AD No : 2008-0128 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2008-0128 

Date: 09 July 2008 

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) : 

TAE125-01 engines 

TCDS Number : EASA.E.055 

Foreign AD : Not applicable 

Supersedure : This AD supersedes EASA AD 2006-0044, dated 16 February 2006. 

ATA 05 Time Limits / Maintenance Checks – Airworthiness Limitations – 

Implementation 

Manufacturer(s): Thielert Aircraft Engines GmbH. 

Applicability: 

TAE 125-01, all serial numbers. 

These engines are known to be installed on, but not limited to, Cessna 172 

and (Reims-built) F172 series (EASA STC Nr. EASA.A.S.01527); Piper PA28 series (EASA STC Nr. EASA.A.S.01632), APEX (Robin) DR 400 series 

(EASA STC Nr. EASA.A.S.01380); and Diamond DA40 and DA42 aircraft. 

Reason: 

As a consequence of occurrences and service experience, Thielert Aircraft 

Engines GmbH has amended the ALS of the Operation & Maintenance Manual 

OM-02-01 to include an inspection of the alternator 14V P/N 02-7150-5502R3, 

and a replacement of the rail pressure valve. Failure of these parts could result in 

in-flight shut downs of the engine(s). 

For the reasons described above, this EASA AD requires the implementation of 

the instructions, limitations, inspections and corrective measures as specified in 

issue 3 revision 5 of the chapter 5 of the OM-02-01. 

Effective Date: 23 July 2008. 

Required action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

 (1) Within the next 3 months after the effective date of this AD, amend the 

approved engine maintenance schedule to incorporate the instructions of 

Chapter 5 “Airworthiness Limitations” of OM-02-01 Issue 3 Revision 5. 
EASA AD No : 2008-0128 

EASA Form 110 Page 2/2 

(2) Thereafter, within the thresholds and intervals defined, accomplish the 

tasks in accordance with the instructions of Chapter 5 “Airworthiness 

Limitations” of OM-02-01 Issue 3 Revision 5.

Ref. Publications: 

Thielert Aircraft Engines GmbH Operation & Maintenance Manual 

TAE 125-01 OM-02-01, Chapter 5 at Issue 3 Revision 5, dated 09 May 2008. 

The use of later approved revisions of this document 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 20 May 2008 as PAD 08-060 for consultation 

until 16 June 2008. No comments were received during the consultation 

period. 

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 +49-37204-696-55 

E-mail info@centurion-engines.com