EASA AD No : 2013-0059-E 

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EASA EMERGENCY AIRWORTHINESS DIRECTIVE 

AD No.: 2013-0059-E 

Date: 08 March 2013 

Note: This Emergency 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 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]. 

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 35 Oxygen – Flight Crew Oxygen Masks / Stowage Units –

Operational Test / Replacement 

Manufacturer(s): DASSAULT AVIATION 

Applicability: Falcon 7X aeroplanes, all serial numbers. 

Reason: During an aeroplane delivery flight test, the flight crew oxygen supply failed. 

The technical investigations carried out by the flight crew oxygen mask and 

stowage box manufacturer identified potentially defective flight crew mask 

oxygen assembly part number (P/N) MSE30-005-3-8 including stowage box 

P/N CSD 30-005-3-8. 

This condition, if not detected and corrected, may cause failure to supply 

oxygen upon demand to the flight crew in flight in “100%” and “Emergency” 

modes which, in case of an emergency, may result in incapacitation of the 

flight crew. 

To address this potential unsafe condition, Dassault Aviation (DA) issued 

Service Bulletin (SB) F7X-241, containing instructions to identify and replace 

the affected flight crew oxygen masks and stowage boxes. 

For the reasons described above, this AD requires accomplishment of 

operational tests of each flight crew oxygen mask and replacement of the 

affected stowage boxes with serviceable parts. Replacement constitutes 

terminating action for the repetitive operational tests. 

Effective Date: 11 March 2013 
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Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless previously accomplished: 

Note 1: For the purpose of this AD, a serviceable stowage box P/N CSD 30-

005-3-8 is a part with serial number (S/N) 1013 or higher, or below 1013 with 

a suffix –“A”. 

(1) Aeroplanes equipped with flight crew mask oxygen assembly P/N 

MSE30-005-3-8 / stowage box CSD 30-005-3-8 with S/N 1013 or higher, 

or S/N below 1013 with suffix –“A” are not affected by the requirements 

of this AD, except the requirement of paragraph (8) of this AD. 

(2) Before next flight after the effective date of this AD, amend the Aircraft 

Flight Manual (AFM) DGT 105608 to incorporate the operational 

procedure as specified in Appendix 1 of this AD, and operate the 

aeroplane accordingly. This can be accomplished by inserting a copy of 

this AD into the AFM. 

(3) Before next flight after the effective date of this AD, accomplish an 

operational test of each flight crew mask oxygen assembly P/N MSE30-

005-3-8 including stowage box P/N CSD 30-005-3-8 in accordance with 

the procedure specified in Appendix 1 of this AD. 

(4) Thereafter, for aeroplanes fitted with flight crew mask oxygen assembly 

P/N MSE30-005-3-8 including stowage box P/N CSD 30-005-3-8, which, 

on the effective date of this AD, have accumulated less than 50 flight 

hours (FH) since first installation on an aeroplane: Before each next 

flight, accomplish an operational test of each flight crew oxygen mask 

assembly in accordance with the procedure specified in Appendix 1 of 

this AD. 

(5) If, during any operational test as required by paragraph (3) or (4) of this 

AD, a discrepancy is detected, before next flight, except as provided by 

the Master Minimum Equipment List (MMEL, see Note 2 of this AD), 

replace the affected stowage box P/N CSD30-005-3-8 with a serviceable 

stowage box in accordance with the instructions of DA SB F7X-241. 

Note 2: Dispatch of the aeroplane with 3rd crew oxygen mask inoperative is 

allowed per MMEL item 35-3. 

(6) Unless accomplished as required by paragraph (5) of this AD, within the 

compliance specified in Table 1 of this AD, as applicable, replace each 

stowage box P/N CSD30-005-3-8 with a serviceable stowage box in 

accordance with the instructions of DA SB F7X-241. 

Table 1 – Stowage Box Replacement 

FH accumulated (on the 

effective date of this AD) by the 

stowage box since first 

installation on an aeroplane 

Compliance Time (after the 

effective date of this AD) 

less than 50 FH within 8 days 

50 FH or more within 65 days 

(7) Replacement of all affected flight crew oxygen mask stowage boxes with 

serviceable stowage boxes on an aeroplane, as required by paragraph 

(5) or (6) of this AD, as applicable, constitutes terminating action for the 

repetitive operational tests as required by paragraph (4) of this AD for 

that aeroplane and a copy of this AD can be removed from the AFM of 

that aeroplane. 

(8) From the effective date of this AD, do not install any flight crew oxygen 
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mask stowage box P/N CSD 30-005-3-8 on an aeroplane, unless it has 

been determined to be a serviceable stowage box (see Note 1 of this 

AD).

Ref. Publications: Dassault Aviation SB F7X-241 original issue dated 07 March 2013. 

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. The results of the safety assessment have indicated the need for 

immediate publication and notification, without the full public consultation 

process. 

3. Enquiries regarding this AD should be referred to the Safety Information 

Section, Executive 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. 
EASA AD No : 2013-0059-E 

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Appendix 1 

 

Airplane Flight Manual Procedure to DGT 105608 

FALCON 

Airplane 

Flight Manual

NORMAL 4-110-07 

BEFORE TAXI Page 1/1 

Quick Donning Oxygen Mask Additional Test 

Quick Donning Oxygen Mask Additional Test

NOTE 

The O2 mask additional test is designed to verify the ability to breathe with the O2 mask donned. 

It has to be performed after completion of the oxygen mask test as described in QRH1 « Power On » 

section 15-20.

O2 MASK ADDITIONAL TEST PROCEDURE: 

Make sure that the PRESS TO TEST knob is on the 100% position 

• Remove the mask from the stowage box 

• Depress the inflation controls (red tabs) to inflate the harness 

• Position the mask onto the head 

• Take a few breaths 

 If the test is successful: 

 Breathing is free and unrestricted 

 The pneumatic blinker (yellow cross) appears and disappears according to the 

breathing frequency 

• Store the mask in the stowage box when test is completed. 

NOTE 

Refer to CODDE 1 ATA 35 subchapters 02-35-10 and 02-35-40 for quick donning mask 

operation and stowage