EASA AD No.: 2009-0208R2

CAP.00110-001 © European Aviation Safety Agency. Al l rights reserved. 1/3 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2009-0208R2

Date: 22 May 2012

Note: This Airworthiness Directive (AD) is issued b y EASA, acting in accordance with Regulation (EC) No 216/2008 on behalf of the Europe an Community, its Member States and of the European third countries that participate in th e 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 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

Revision: This AD revises EASA AD 2009-0208R1 date d 02 June 2010.



### ATA 34 Navigation – Radio-altimeter Lock-up – Opera tional Procedure

Manufacturer(s): Dassault Aviation

Applicability: Falcon 7X aeroplanes, all serial num bers.
Reason: Several occurrences of untimely radio-altim eter lock-up have been reported, where the failed radio-altimeter (RA) indicated a n egative distance to the ground despite the aircraft was flying at medium or high altitude. A locked RA #1 leads to untimely inhibition of warn ings that could be displayed along with certain abnormal conditions wh ile the avionic system switches into landing mode during altitude cruise. This condition, if not corrected, may cause the fli ght crew to be unaware of possible system failures that could require immedia te actions, which could ultimately lead to loss of control of the aeroplane

. To address this unsafe condition, Dassault Aviation developed an Airplane Flight Manual (AFM) operational procedure that, in case of RA #1 lock-up, allows the crew to restore the system warning perfo rmance by depowering the RA #1. EASA issued AD 2009-0208 to require applicat ion of that new abnormal procedure when RA #1 lock-up occurs. That EASA AD also prohibited dispatch of the aeroplane with any radio -altimeter inoperative. Since issuance of EASA AD 2009-0208, Dassault Aviat ion developed Easy avionics load 10 which is embodied through Dassault Aviation production modification M0566 or in-service through Service Bu lletin (SB) Falcon 7X n°100. This modification provides new features to d isplay a "RA miscompare" flag on both Primary Display Units (PDU) and allows a commanded systemEASA AD No.: 2009-0208R2

CAP.00110-001 © European Aviation Safety Agency. Al l rights reserved. 2/3 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. reversion to the correct RA output. Prompted by this modification, EASA issued AD 2009- 0208R1, to allow not deactivating RA #1 in case lock-up conditions occur red in flight, for aeroplanes on which M0566 or SB Falcon 7X n°100 was embodied. Since issuance of EASA AD 2009-0208R1, further anal ysis shows that, for aeroplanes with M0566 applied in production, or SB Falcon 7X N°100 applied in service, the RA#2 lock-up occurrence should be a ddressed through a commanded system reversion, now only contained in a simplified Falcon 7X AFM procedure 3-140-70A. For the reasons described above, this AD revises EA SA AD 2009-0208R1 to reduce the requirement to amend the AFM by deleting the reference to procedure 3-140-65B. In addition, Dassault Aviation have confirmed that all Falcon 7X have been or are being modified with Mod M0566 applied in production, or SB Falcon 7X n°100 applied in servic e. For this reason, paragraph (1) of this AD has been deleted. Finally, many editorial changes have been made to align the writing of the AD with the current writing standards.

Effective Date: Revision 2: 05 June 2012
Revision 1: 16 June 2010 Original issue: 27 October 2009
Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previous ly: (1) Deleted. See Reason paragraph of this AD. (2) For aeroplanes on which M0566 or SB Falcon 7X n °100 has been embodied, from 16 June 2010 [the effective date of Revision 1 of this AD], amend the AFM to incorporate Falcon 7X AFM procedur e 3-140-70A, or as an alternative, amend the AFM to incorporate Das sault Aviation CP054 (which includes Falcon 7X AFM procedure 3-140-70A) and operate the aeroplane accordingly. The use of Dassault AFM DGT 105608 revision 15, whi ch includes Dassault Aviation Falcon 7X AFM procedure 3-140-70A , is acceptable to comply with the requirements of paragraph (2) of th is AD. (3) From 27 October 2009 [the effective date of the original issue of this AD], dispatch of the aeroplane with any radio-altimeter inoperative is prohibited. (4) From 27 October 2009 [the effective date of the original issue of this AD], delete item 34-10 “Radio-Altimeters (RA)” from the operator’s Minimum Equipment List (MEL). Inserting a copy of this AD into that MEL for each affected aeroplane is acceptable to comply with the requirements of parag raphs (3) and (4) of this AD.

Ref. Publications: Dassault Aviation Falcon 7X AFM revision 15 DGT1056 08. This revision includes Dassault Aviation Falcon 7X AFM procedure 3-140-70A.
Dassault Aviation Falcon 7X MMEL DGT 106042 revisio n 6. Dassault Aviation SB Falcon 7X n°100 original issue

. The use of later approved revisions of these docume nts 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 required actions and the risk allowance have granted the issuance of a Final AD with Request for Comments, postponing th e public consultationEASA AD No.: 2009-0208R2

CAP.00110-001 © European Aviation Safety Agency. Al l rights reserved. 3/3 Proprietary document. Copies are not controlled. Co nfirm revision status through the EASA-Internet/Int ranet. process after publication. 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 ts 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 / Fax: (33) 1 47 11 8 9 49

• For USA, Canada and Mexico based operators: Help Desk: (1) 800-2FALCON (2325266) / Fax: (1) 20 1 541 4740

• All other areas: Help Desk: (1) 201 541 4747 / Fax: (1) 201 541 4740

.