EASA AD No : 2013-0059-E

TE.CAP.00111-003 © European Aviation Safety Agency. All rights reserved. 1/4 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. 

## EASA EMERGENCY AIRWORTHINESS DIRECTIVE

AD No.: 2013-0059-E

Date: 08 March 2013

Note: This Emergency Airworthiness Directive (AD) i s issued by EASA, acting in accordance with Regulation (EC) No 216/2008 on behalf of the E uropean 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 EU 748/2012, P art 21.A.3B. In accordance with EC 2042/2003 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 accor dance with the requirements of that AD, unless othe rwise specified by the Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Registry [EC 216/200 8, 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 num bers.
Reason: During an aeroplane delivery flight test, t he flight crew oxygen supply failed. The technical investigations carried out by the fli ght crew oxygen mask and stowage box manufacturer identified potentially def ective flight crew mask oxygen assembly part number (P/N) MSE30-005-3-8 inc luding 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, Dassaul t Aviation (DA) issued Service Bulletin (SB) F7X-241, containing instructi ons to identify and replace the affected flight crew oxygen masks and stowage b oxes. For the reasons described above, this AD requires a ccomplishment of operational tests of each flight crew oxygen mask a nd replacement of the affected stowage boxes with serviceable parts. Repl acement constitutes terminating action for the repetitive operational t ests.

Effective Date: 11 March 2013EASA AD No : 2013-0059-E

TE.CAP.00111-003 © European Aviation Safety Agency. All rights reserved. 2/4 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. Required Action(s) and Compliance Time(s): Required as indicated, unless previously accomplish ed:
Note 1: For the purpose of this AD, a serviceable s towage 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 oxyge n 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 o perational procedure as specified in Appendix 1 of this AD, an d 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 as sembly 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 c rew 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 flig ht 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 3 rd 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 appl icable, replace each stowage box P/N CSD30-005-3-8 with a serviceable st owage 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 requi red by paragraph (5) or (6) of this AD, as applicable, constitutes t erminating action for the repetitive operational tests as required by paragra ph (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 inst all any flight crew oxygenEASA AD No : 2013-0059-E

TE.CAP.00111-003 © European Aviation Safety Agency. All rights reserved. 3/4 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. mask stowage box P/N CSD 30-005-3-8 on an aeroplane , unless it has been determined to be a serviceable stowage box (se e Note 1 of this AD).

Ref. Publications: Dassault Aviation SB F7X-241 ori ginal issue dated 07 March 2013.
The use of later approved revisions of this documen t 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. The results of the safety assessment have indica ted the need for immediate publication and notification, without the full public consultation process. 3. Enquiries regarding this AD should be referred t o the Safety Information Section, Executive 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 your Dassault Falcon Techni cal 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

TE.CAP.00111-003 © European Aviation Safety Agency. All rights reserved. 4/4 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. 

### 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 t he ability to breathe with the O2 mask donned. It has to be performed after completion of the oxyg en 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 infla te 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 d isappears according to the breathing frequency

• Store the mask in the stowage box when test is com pleted.

NOTE 

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