EASA AD No.: 2013-0279

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EASA AIRWORTHINESS DIRECTIVE

AD No.: 2013-0279

Date: 26 November 2013

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 EU 748/2012, Part 21.A.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].

Design Approval Holder’s Name:

TECHNIFY MOTORS GmbH

Type/Model designation(s):

TAE 125-02 engines

TCDS Number: EASA.E.055

Foreign AD: Not applicable

Supersedure: None

ATA 73 Engine Fuel & Control – High Pressure Fuel Pump –

Replacement

Manufacturer(s): Technify Motors GmbH (TMG), formerly Thielert Aircraft Engines (TAE).

Applicability: TAE 125-02-99 (commercial designation Centurion 2.0) and TAE 125-02-114

(commercial designation Centurion 2.0S) engines, all serial numbers.

These engines are known to be installed on, but not limited to, the following 

aeroplane types, mostly through application of a Supplemental Type Certificate 

(STC): Cessna 172 and (Reims-built) F172 series (STC EASA.10014287); 

Piper PA-28 series (STC EASA.10014364); CEAPR (APEX, Robin) DR 400 

series (STC EASA.10014219); and Diamond DA 40 and DA 42 series.

Reason: In-flight shut down occurrences have been reported on aeroplanes equipped 

with TAE 125-02 engines. The initial results of the investigations showed that 

abnormal high wear of the high pressure fuel pump was the probable cause of 

the engine failure.

This condition, if not corrected, could result in further cases of engine power 

loss events and consequent potential loss of control of the aeroplane.

To address this potential unsafe condition, TMG developed an improved design

high pressure fuel pump, which is available as in-service modification through 

Service Bulletin (SB) TM TAE 125-1017 P1. 

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

fuel pumps with improved units.

Effective Date: 10 December 2013
EASA AD No.: 2013-0279

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Required Action(s) 

and Compliance 

Time(s):

Required as indicated, unless accomplished previously:

(1) For engines operated on TS-1 jet fuel, each high pressure fuel pump

must be replaced, at intervals not to exceed 300 flight hours (FH), in 

accordance with the instructions of TMG/TAE Operation & Maintenance 

Manual OM-02-02.

(2) Within the compliance time indicated in Table 1 or Table 2 of this AD, as 

applicable, depending on aeroplane and engine configuration, replace 

each high pressure fuel pump Part Number (P/N) 05-7312-K005301 and

P/N 05-7312-K005302 with an improved pump in accordance with the 

instructions of TMG (TAE) SB TM TAE 125-1017 P1.

Note: The ‘accumulated’ FH specified in Tables 1 and 2 are hours accumulated 

since first installation of the pump on an engine/aeroplane.

Table 1 – Single-engine Aeroplanes

FH accumulated by the 

pump on the effective 

date of this AD

Compliance time 

300 FH or more Within 55 FH, or during the next scheduled 

engine maintenance, whichever occurs first 

after the effective date of this AD

less than 300 FH During the next scheduled engine 

maintenance after exceeding 170 FH

Table 2 – Twin-engine Aeroplanes

FH accumulated by the 

pump(s) on the 

effective date of this AD

Compliance time

Only one of the 2 pumps

affected, irrespective of 

FH accumulated

Before exceeding 630 FH accumulated by 

the affected pump

Both pumps are affected:

Both pumps have

accumulated 300 FH or 

more

During the next scheduled engine 

maintenance after the effective date of this 

AD for 1 pump, and before exceeding 630 

FH accumulated by the other pump

Only 1 pump has 

accumulated 300 FH or 

more

During the next scheduled engine 

maintenance after exceeding 170 FH, or 

within 55 FH, whichever occurs later after 

the effective date of this AD, for the pump

that has accumulated less than 300 FH, and 

before exceeding 630 FH accumulated by 

the other pump

Both pumps have 

accumulated less than 

300 FH

During the next scheduled engine 

maintenance after exceeding 170 FH, or 

within 55 FH, whichever occurs later after 

the effective date of this AD

(3) After modification of an engine as required by paragraph (2) of this AD,

do not install a high pressure fuel pump P/N 05-7312-K005301 or

P/N 05-7312-K005302 on that engine.
EASA AD No.: 2013-0279

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(4) From the effective date of this AD, do not install a TAE 125-02-99 or TAE

125-02-114 engine on an aeroplane, unless it has been verified that the 

high pressure fuel pump installed on the engine has P/N 05-7312-K005303 

or higher.

Ref. Publications: Thielert Aircraft Engines SB TM TAE 125-1017 P1 (initial issue), dated

10 April 2013, or Technify Motors SB TM TAE 125-1017 P1 Revision 1, dated 

20 September 2013.

Thielert Aircraft Engines Operation & Maintenance Manual OM-02-02,

version 3/0, dated 26 September 2013.

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 27 September 2013 as PAD 13-149 for 

consultation until 25 October 2013. The Comment Response Document 

can be found at http://ad.easa.europa.eu.

3. Enquiries regarding this AD should be referred to the Safety Information 

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

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

this AD, please contact:

Technify Motors GmbH, Platanenstraße 14

D-09356 Sankt Egidien, Germany

Telephone +49-37204-696-0; Fax +49-37204-696-55;

E-mail info@centurion.aero.