EASA AD No: 2008-0134R1 

EASA Form 110 Page 1/2 

 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2008-0134R1 

Date: 17 February 2009 

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 Airworthiness Directive applies, except in accordance with the requirements of that Airworthiness 

Directive 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 : 

TURBOMÉCA 

Type/Model designation(s) : 

ARRIUS 2F turbo-shaft engine 

TCDS Number : France No. M22 

Foreign AD : Not applicable 

Supersedure : None 

ATA 73 Engine Fuel & Control - P3 Air Pipe – Inspection/Modification 

Manufacturer(s): Turboméca 

Applicability: 

ARRIUS 2F turbo-shaft engines, all serial numbers. 

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

Eurocopter EC120B helicopters. 

Reason: 

On several ARRIUS 2F engines, the clearance between the P3 air pipe 

P/N 0319719180 and the rear right bulkhead P/N 0319998240 has been 

found to be too small. 

Investigations have shown that both P3 air pipe and rear right bulkhead 

were compliant to the design. The Turbomeca Engineering Department 

concluded that the tolerance of assembly established during the design 

could result in some rubbing between parts. 

Rubs between the pipe and the bulkhead may lead to premature wearing 

and finally rupture of the P3 air pipe. The loss of P3 air pressure would 

then force the fuel control system to idle which could have a detrimental 

effect in critical phases of flight. 

 

For the reason stated above, this Airworthiness Directive (AD) requires the 

inspection of the P3 air pipe (first section) and RH rear half-wall and, in 

case it is found damaged or non-compliant (idem), the replacement or 

readjustment of parts. 
EASA AD No: 2008-0134R1 

EASA Form 110 Page 2/2 

 

Revision 1 of the AD clarifies the wording. It emphasizes that, under some 

circumstances, the inspection could be repetitive as per the Mandatory 

Service Bulletin N° 319 75 4810. 

Effective Date: 31 July 2008 

Required action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

Within 100 operating hours after the effective date of this AD, in 

accordance with the instructions of Turbomeca Mandatory Service Bulletin 

N° 319 75 4810: 

 Visually inspect P3 air pipe (first section) and RH rear half-wall. 

 Inspect play between P3 air pipe (first section) and RH rear half-wall. 

 Replace P3 air pipe (first section) if any damage is found. 

 Readjust the first section of the P3 air pipe if the inspected clearance 

is found to be not compliant. 

 Replace RH rear half-wall if any damage is found. 

Following first application of SB N° 319 75 4810 , the play between P3 

air pipe (first section) and RH rear half-wall may be still not compliant: in 

that case inspect play between P3 air pipe (first section) and RH rear 

half-wall every 100 hours. 

Ref. Publications: 

Turboméca Service Bulletin N° 319 75 4810 original issue 

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 11 June 2008 as PAD 08-068 for consultation 

until 09 July 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: 

Turboméca, S.A., ARRIUS Customer Support, 40220 TARNOS, 

FRANCE. Fax: +33 5 59 74 45 15, or contact your nearest technical 

representative at www.turbomeca-support.com