E ASA AD No.: 20 15

- 0 076

TE. CAP.0011 0

- 00 4 © European Aviation Safety Agency. All rights reserved

. 1 / 2 Proprietary document. Copies are not controlled. Confirm revision status through the EASA

- Internet/Intranet. 

## EASA AIRWORTHINESS DIRECTIVE

AD No

. : 20 1 5

- 0 076

Date: 06 May 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 ope rate 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) exemp tion]

.



### Design Approval Holder’s Name:

D ASSAULT A VIATION Type/Model designation(s):

Falcon 7X aeroplanes

TCDS Number : EASA. A. 155

F oreign AD : Not A pplicable

Supersedure : None



### ATA 24 Electrical Power

– R am Air Turbine

– D eployment / Placard

Replacement

Manufacturer(s): D assault Aviation

Applicability: Falcon 7X aeroplanes

, all serial numbers.

Reason: A few cases of Ram Air Turbine (RAT) blade damage have been reported during maintenance operations. Th is kind of damage is caused by an incorrect locking of RAT rotor, due to improper positioning of blades at beginning of retraction, and locking check during retraction , which likely occur s during stowage of the RAT

, after its deployment for maintenance purpose s

. This condition

, if not corrected, could prevent RAT deployment in flight during
an emergency , possibly resulting in reduced control of the aeroplane

. To address this potential unsafe condition, Dassault Aviation issued Service Bulletin (SB) 7X

- 28 9

, which provides instructions t o smoothly deploy the RAT and install an improved placard t o ensure proper RAT sto w age /retraction after maintenance

. For the reasons described above, this AD requires replacement of the existing RAT placard with a new placard and RAT re

- identification . This AD also provides conditions for installation of a RAT on an aeroplane.

Effective Date: 20 May 2015E ASA AD No.: 20 15

- 0 076

TE. CAP.0011 0

- 00 4 © European Aviation Safety Agency. All rights reserved

. 2 / 2 Proprietary document. Copies are not controlled. Confirm revision status through the EASA

- Internet/Intranet. Required A ction(s) and Compliance Time(s): Required as indicated, unless accomplished previously : (1) Within 28 months, or during the next accomplishment of the RAT functional test (Maintenance task 24

- 50

- 00

- 710

- 801), whichever occurs first after the effective date of this AD

, accomplish the actions as specified in paragraphs (1.1) and (1.2) of this AD concurrently in accordance with the instructions of Dassault Aviation SB 7X

- 289

. (1.1) Smoothly d eploy and m odify the RAT P/N 1705673A by removing the placard and installing a new placard

. (1.2) Change the RAT P/N from P/N 1705673A to P/N 1705673B (or later approved RAT P/N)

. (2 ) An aeroplane on which Dassault Aviation Mod M1428 has been embodied in production is not affected by the requirements of paragraph (1) of this AD, provided no spare RAT P/N 1705673A has been installed on that aeroplane since first flight.
(3) From the effective date of this AD, d o not install on any aeroplane a RAT P/N 1705673A

.

Ref. Publications: Dassault Aviation SB 7X

- 28 9 dated 21 January 2015

. The use of later approved revisions of th is 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 April 2015 as PAD 15

- 031 for consultation until 29 April 2015. No comments were received during the consultation period

. 3. Enquiries regarding this A D 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 Center :

 For Europe, Middle East and Africa based operators:
( + 33) 1 47 11 37 37

 For USA, Canada and Mexico based operators:
( + 1) 800

- 2FALCON (2325266)

 All other areas : ( + 1) 201 541 4747