EASA AD No.: 2015-0048

TE.CAP.00110-004 © European Aviation Safety Agency. All rights reserved. 1/2 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2015-0048

Date: 17 March 2015
Note: This Airworthiness Directive (AD) is issued b y EASA, acting in accordance with Regulation (EC) No 216/2008 on behalf of the European Communit y, its Member States and of the European third countries that participate in the ac tivities of EASA under Article 66 of that Regulation.
This AD is issued in accordance with EU 748/2012, P art 21.A.3B. In accordance with EU 1321/2014 Annex I, Part M.A.301, the continuing airworthiness of an aircraft shall be en sured by accomplishing any applicable ADs. Conseque ntly, no person may operate an aircraft to which an AD applies, except in accordan ce with the requirements of that AD, unless otherwi se specified by the Agency [EU 1321/2014 Annex I, Part M.A.303] or agreed with the Authority of the State of Registry [EC 216/2008, A rticle 14(4) exemption]. 

### Design Approval Holder’s Name:
AIRBUS HELICOPTERS Type/Model designation(s): AS 365 N3 and EC 155 helicopters

TCDS Number: EASA.R.105

Foreign AD: Not applicable

Supersedure: None



### ATA 25 Equipment / Furnishing – External Life Raft – Modification

Manufacturer(s): Airbus Helicopters (formerly Euroc opter, Eurocopter France, Aerospatiale)
Applicability: AS 365 N3, EC 155 B and EC 155 B1 he licopters, all manufacturer serial numbers, if equipped with Aérazur SR10 external lif e rafts with the following Manufacturer Part Number (MP/N): - MP/N 245431-0 (life rafts fitted with metal cylin der and without beacon installation provisions), or - MP/N 245431-1 (life rafts fitted with carbon cyli nder and without beacon installation provisions), or - MP/N 245434-0 (life rafts fitted with metal cylin der and with beacon installation provisions), or - MP/N 245434-1 (life rafts fitted with carbon cyli nder and with beacon installation provisions), except helicopters modified in accordance with Airb us Helicopters modification (mod) 365A084711.00 or mod 365A084711.01.

Reason: Airbus Helicopters reported that, after the installation of a new life raft on a helicopter, the travel of the life raft deployment control could not be properly adjusted. Technical analysis revealed that the vary ing position of the life raft inflation cylinder inside the bag containing the li fe raft, as well as the varying position of this bag within the life raft container , may induce a loosening of the life raft deployment control cable and subsequent i nsufficient travel of the deployment control.EASA AD No.: 2015-0048

TE.CAP.00110-004 © European Aviation Safety Agency. All rights reserved. 2/2 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. This condition, if not corrected, could result in f ailure of deployment of the external life raft (for example after a ditching), impeding or preventing safe evacuation of the occupants from the helicopter. To address this potential unsafe condition, Airbus Helicopters developed mod 365A084711.00 and mod 365A084711.01 to ensure effec tive deployment of the external life raft and issued Alert Service Bulleti n (ASB) AS365-25.01.45 and ASB EC155-25A128 providing modification instruction s for in-service helicopters. For the reason described above, this AD requires mo dification of the life raft deployment control.

Effective Date: 31 March 2015

Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previous ly: (1) Within 110 flight hours (FH) after the effectiv e date of this AD, or before the next flight where the helicopter is required to be equipped with a life raft, whichever occurs later, modify the life raft deployment control of the helicopter in accordance with the instructions of p aragraph 3.B of Airbus Helicopters ASB AS365-25.01.45 Revision 1 or ASB EC 155-25A128 Revision 1, as applicable to the helicopter model. (2) Modification of the life raft deployment contro l of the helicopter, before the effective date of this AD, in accordance with t he instructions of Airbus Helicopters ASB AS365-25.01.45 original issue or AS B EC155-25A128 original issue, as applicable to the helicopter mod el, is acceptable to comply with the requirements as required by paragra ph (1) of this AD.
Ref. Publications: Airbus Helicopters ASB AS365-25. 01.45 original issue 29 September 2014 or Revision 1 dated 02 February 2015, Airbus Helicopters ASB EC155-25A128 original issue 29 September 2014 or Revision 1 dated 02 February 2015. The use of later approved revisions of these docume nts is acceptable for compliance with the requirements of this AD.

Remarks: 1. If requested and appropriately substantiated, EA SA can approve Alternative Methods of Compliance for this AD. 2. Based on the required actions and the compliance time, EASA have decided to issue a Final AD with Request for Commen ts, postponing the public consultation process until after publication

. 3. Enquiries regarding this AD should be referred t o the Safety Information Section, Certification Directorate, EASA. E-mail: ADs@easa.europa.eu. 4. For any question concerning the technical conten t of the requirements in this AD, please contact: Airbus Helicopters (EBSESB ) – Aéroport de Marseille Provence 13725 Marignane Cedex, France; Telephone +33 (4) 42 85 97 97; Fax +33 (4) 42 85 99 66; E-mail: Directive.technical-support@ airbus.com

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