EASA AD No.: 2015-0204

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EASA AIRWORTHINESS DIRECTIVE

AD No.: 2015-0204

Date : 08 October 2015

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 EU 1321/2014 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 

[EU 1321/2014 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:

DASSAULT AVIATION

Type/Model designation(s):

Falcon 7X aeroplanes

TCDS Number : EASA.A.155

Foreign AD : Not applicable

Supersedure : None

ATA 53 Fuselage – Lateral Engine Pylons – Stiffener Attachments to Pylon 

Spar 41 Assembly – Inspection / Repair

Manufacturer(s): Dassault Aviation

Applicability: Falcon 7X aeroplanes serial numbers (S/N) 1 to 221 inclusive, except S/N 182 

and S/N 220.

Reason: On the assembly line of Falcon 7X aeroplanes, defects were detected on left

hand and right hand engine pylons. A quality review revealed that bores 

located on upper and lower stiffener joints to the web at pylon Frame 41 were 

improperly drilled. Fettlings of borings, for fixing diameter 4 mm and 5 mm, 

were found ovalized, too deep and having irregular surface qualities under the 

head of fixing. Dassault Aviation identified the individual aeroplanes that are 

potentially affected by this production deficiency.

This condition, if not detected and corrected, would adversely affect the 

structural integrity of the aeroplane.

To address this potential unsafe condition Dassault Aviation published Service 

Bulletin (SB) 7X-346 to provide corrective action instructions.

For the reasons described above, this AD requires a one-time inspection and, 

depending on findings, repair of affected stiffener bores.

Effective Date: 22 October 2015
EASA AD No.: 2015-0204

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Required Action(s) 

and Compliance 

Time(s):

Required as indicated, unless accomplished previously:

Before exceeding 4 000 flight cycles or 98 months, whichever occurs first 

since date of first delivery of the aeroplane, inspect and, depending on 

findings, repair bores on stiffeners at engine pylons frame 41, in accordance 

with the accomplishment instructions of Dassault Aviation SB 7X-346.

Ref. Publications: Dassault Aviation SB 7X-346 original issue dated 24 April 2015.

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 01 September 2015 as PAD 15-113 for 

consultation until 29 September 2015. 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, 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 your Dassault Falcon Technical Assistance:

 For Europe, Middle East and Africa based operators:

Hot Line: (33) 1 47 11 37 37

 For USA, Canada and Mexico based operators:

Help Desk: (1) 800-2FALCON (2325266)

 All other areas:

Help Desk: (1) 201 541 4747