EASA AD No : 2011-0070 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2011-0070 

Date: 18 April 2011 

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 AD applies, except 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 : 

DASSAULT AVIATION 

Type/Model designation(s) : 

FALCON 7X aeroplanes 

TCDS Number: EASA.A.155 

Foreign AD: Not Applicable 

Supersedure: None 

ATA 35 Oxygen – Passenger Oxygen Line – Inspection / Modification 

Manufacturer(s): DASSAULT AVIATION 

Applicability: Falcon 7X aeroplanes with Serial Numbers 3, 10, 13, 18, 19, 20, 22, 23, 24, 

26, 27, 29, 30, 31, 32, 33, 35, 36, 38, 41, 42, 43, 47, 48, 58, 63, 64, 66, 67, 

68, 71, 76, 78, 79, 83, 84, 85, 86, 87 and 93, unless Dassault Aviation 

modification, as indicated in Dassault Aviation Service Bulletin (SB) F7X 

No. 174, has been embodied. 

Reason: Inspections of two aeroplanes during cabin completions have shown that a 

passenger oxygen line at frame 10 was chafing with the forward lavatory rear 

structure. 

Design review of the area confirmed a local low clearance value which raises 

the risk of the oxygen line developing a crack. 

This condition, if not detected and corrected, could lead to rupture of the 

oxygen line which, in case of a cabin depressurization, would impair 

operation of the passengers’ oxygen distribution system. 

To address this unsafe condition, Dassault Aviation have designed a 

modification with a new oxygen line routing. 

This AD requires an inspection of the oxygen line for interference or damage 

and, in case of discrepancies, accomplishment of the modification before next 

flight. It requires as well accomplishment of the modification of the oxygen 

line routing for the aeroplanes in which no discrepancies were identified. 
EASA AD No : 2011-0070 

EASA Form 110 Page 2/2 

Effective Date: 02 May 2011 

Required action(s) 

and Compliance 

Time(s): 

Required as indicated unless previously accomplished: 

(1) Within 2 months after the effective date of this AD, inspect the oxygen 

line for clearance and damage in accordance with Dassault Aviation SB 

F7X No. 174. 

(2) If any discrepancy is found, before next flight, modify the routing of the 

oxygen line in accordance with the instruction of Dassault Aviation SB 

F7X No. 174. 

(3) Unless already accomplished in accordance with the paragraph (2) of the 

required actions of this AD, within 98 months or 4000 flight cycles after 

the effective date of this AD, whichever occurs first, modify the routing of 

the oxygen line in accordance with Dassault Aviation SB F7X No. 174. 

Ref. Publications: 

Dassault Aviation Service Bulletin F7X No. 174 initial issue dated 19 January 

2011. 

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 10 March 2011 as PAD 11-030 for consultation 

until 07 April 2011. 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 your Dassault Falcon Technical Assistance: 

• For Europe, Middle East and Africa based operators: 

 Hot Line: (33) 1 47 11 37 37 / Fax: (33) 1 47 11 89 49 

• For USA, Canada and Mexico based operators: 

 Help Desk: (1) 800-2FALCON (2325266) / Fax: (1) 201 541 4740 

• All other areas: 

 Help Desk: (1) 201 541 4747 / Fax: (1) 201 541 4740