EASA AD No: 2009-0261-E

EASA Form 111 Page 1/2 

## EASA EMERGENCY AIRWORTHINESS DIRECTIVE

AD No.: 2009-0261-E

Date: 18 December 2009

Note: This emergency Airworthiness Directive (AD) i s issued by EASA, acting in accordance with Regulation (EC) No 216/2008 on beha lf of the European Community, its Member States and of the European third countries t hat 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 b e ensured by accomplishing any applicable ADs. Cons equently, no person may operate an aircraft to which an AD applies, exc ept 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 :


### TURBOMECA Type/Model designation(s) :
TURMO IV turboshaft engines

TCDS Number: DGAC France M8

Foreign AD: Not applicable

Supersedure: None



### ATA 72 Intermediate Bearing Return Flexible Pipe Unions Inspection / Replacement.

Manufacturer(s): TURBOMECA

Applicability: All TURMO IV A and IV C turboshaft e ngines that incorporate modification TU 233 [engines fitted with an intermediate bearing return flexible pipe Part Number (P/N) 9 560 17 606 0]. These engines are known to be installed on, but are not limited to, EUROCOPTER SA 330 F, G and J PUMA helicopters.
Reason: During a maintenance inspection before the first flight of the day, an oil leak was found on an engine deck. A circumferential crack on the intermediate bearing return flexible pipe union (pi pe P/N 9 560 17 606 0) was identified as the origin of the leak. A similar oil pipe union crack was then reported at the same location on another engin e, on the same pipe part number. This pipe part number was approved as modification TU 233 in 2008. Although such cracks have been detected and did not lead to an inservice event, the possibility exists that some add itional cracks occur and may not be detected before the potential complete r upture of the union. This Airworthiness Directive (AD) is published to m andate repetitive inspections given in Turbomeca Mandatory Service Bu lletin (MSB) A249 72 0809 in order to detect incipient cracks of the flexible pipe unions.

Effective Date: 20 December 2009EASA AD No: 2009-0261-E

EASA Form 111 Page 2/2 Required action(s) and Compliance Time(s): (1) Before next flight after the effective date of this AD and thereafter daily after the last flight of the day until further noti ce, inspect for absence of oil leak or seepage both unions of the intermediate bearing return flexible pipes P/N 9 560 17 606 0 as instructed in paragraph 2 of TURBOMECA MSB A249 72 0809 Version A. Check also th e engine deck for absence of oil leaks. (1.1) If any oil leak or seepage is found, before f urther flight disassemble the pipe and inspect unions: (1.1.1) If no crack is found, re-install t he pipe. (1.1.2) If any crack is found, remove the pipe fro m ser vice and replace it.
Ref. Publications: TURBOMECA Mandatory Service Bull etin A249 72 0809 Version A, The use of later approved revisions of this documen t is acceptable for compliance with the requirements of this AD.
TURBOMECA TURMO IV Maintenance Manual 279 02 932
TURBOMECA TURMO III C4/IV Overhaul Manual 249 92 9 34

Remarks : 1. If requested and appropriately substantiated, EA SA can approve Alternative Methods of Compliance for this AD. 2. The safety assessment has requested not to imple ment the full consultation process and an immediate publication a nd notification. 3. Enquiries regarding this AD should be referred t o the Airworthiness Directives, Safety Management & Research Section, C ertification Directorate, EASA. E-mail: ADs@easa.europa.eu

. 4. For any questions concerning the technical conte nt of the requirements in this AD, please contact: Operator Support & Sales TURMO - TURBOMECA 40220 TARNOS – FRANCE Phone: +33 (0)5 59 74 40 28 Fax: +33 (0)5 59 74 45 16 or refer to your nearest TURBOMECA field representative on http://www.turbomeca-support.com

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