EASA AD No.: 2006-0357R1

EASA Form 110 Page 1/2 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2006-0357R1

Date: 22 April 2010

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 participat e 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 a ccomplishing any applicable ADs. Consequently, no person may opera te an aircraft to which an Airworthiness Directive applies, except in accordance with the requirements of that Airworthiness Direc tive unless otherwise specified by the Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Regi stry [EC 216/2008, Article 14(4) exemption]. 

### Type Approval Holder’s Name : Agusta S.p.A. Type/Model designation(s) :
AB139 and AW139 helicopters

TCDS Number : EASA R.006

Foreign AD : Not applicable

Revision : This AD revises EASA AD 2006-0357 dated 26 November 2006



### ATA 53 Fuselage – Frame 5700 Middle Section - Inspection

Manufacturer(s): Agusta S.p.A.
Applicability: AB139 and AW139 helicopters, all serial numbers (S/N) except S/N 31002, 31003, 31004 and 31007 and except S/N where one of the following applies: - installation of retro modification P/N 3G5306P08512 on frames P/N 3P5338A13352 (LH) and 3P5338A13452 (RH) as per Agusta Bollettino Tecnico (BT) 139-089

or - installation of retro modification P/N 3G5306P22311 on frames P/N 3P5338A13353 (LH) and 3P5338A13453 (RH) as per Agusta Bollettino Tecnico (BT) 139-089

or - installation of frame P/N: 3P5338A13354 (LH) and 3P5338A13454 (RH).

Reason: Tests have shown that the A gusta AB/AW 139’s Fuselage Frame 5700 middle section is prone to fatigue damage. To prevent cracks or structural failure in this area, a repetitive inspection has been introduced as a temporary measure by ENAC AD 2005-438.
EASA AD 2006-0357 retained this requirement and expanded the applicability to include AW 139 models. No additional requirements were introduced by this directive.EASA AD No.: 2006-0357R1

EASA Form 110 Page 2/2 This AD revision reduces the applicability to helicopters where none of the modifications listed in the AD Applicability is embodied.
Effective Date: Original Issue: 13 December 2006 Revision 1: 06 May 2010
Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previously: (1) Within the next 10 flight hours (FH) after 07 November 2005 [the effective date of ENAC AD 2005-438] or upon accumulating 100 FH time-in-service since new, whichever occurs later, inspect the fuselage frame 5700 middle section in accordance with the instructions of Agusta Bolletino Tecnico (BT) 139-018 Revision B dated October 18, 2006 or later revisions;

(2) Thereafter, at intervals not exceeding 100 FH, repeat the inspection as required by paragraph (1) of this directive;

(3) When damage or cracks are found, before next flight, contact the TC Holder (address details in the ‘remar ks’ section of this directive) for further instructions and accomplish them accordingly.
Ref. Publications: Agusta BT 139-018 Revision B dated 18 October 2006; Agusta BT 139-089 original issue dated 19 February 2010. The use of later approved revisions of these documents is acceptable for compliance with the requirements of this AD.

Remarks : 1. If requested and appro priately substantiated, EASA can accept Alternative Methods of Compliance for this AD. 2. The safety assessment of the original issue of this AD has requested not to implement the full consultation process and an immediate publication and notification. 3. Enquiries regarding this AD should be addressed to the Airworthiness Directives, Safety Management & Re search Section, Certification Directorate, EASA. E-mail: ADs@easa.europa.eu

. 4. For any question concerning the tec hnical content of the requirements in this AD, please contact: Agusta S.p.A., an AgustaWestland company, Via G. Agusta 520, 21017 Cascina Costa di Samarate (VA), Italy; telephone +39-0331-229111; facsimile +39-0331-229605 or 222595; E-mail: info@agustawestland.com

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