EASA AD No.: 2011-0025-E

EASA Form 111 Page 1/2 

## EASA EMERGENCY AIRWORTHINESS DIRECTIVE

AD No.: 2011-0025-E

Date: 18 February 2011

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 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]. 

### Type Approval Holder’s Name :

DASSAULT AVIATION Type/Model designation(s) :

Mystère-Falcon 50 aeroplanes

TCDS Number : EASA.A.062

Foreign AD : Not applicable

Supersedure : None



### ATA 26 Fire Protection - Extinguishing system – Inspection / ReInstallation

Manufacturer(s): Dassault Aviation

Applicability: Mystère Falcon 50 and 50EX aeroplane s, all serial numbers

Reason: On two occurrences on Mystère-Falcon 50 aer oplanes in service, it was detected that two pipes had been swapped in mainten ance at the frame 42 firewall. The swapped lines are the extinguishing s ystem line to engine # 2, and engine # 2 Low Pressure (LP) bleed line. If the swapping of these two lines is not detected and corrected, in case of engine # 2 fire, the fire extinguishing capability would not be operational. For the reasons described above, this AD requires a n inspection of the connection of the two lines (extinguishing and LP b leed lines) at frame 42 in the rear compartment and, in case of findings, prop er re-installation of the lines. This AD requires as well reporting to Dassau lt Aviation. This AD is considered to be an interim measure and, depending on the inspection results provided by operators, further A D action may follow.

Effective Date: 21 February 2011

Required Action(s) and Compliance Required as indicated, unless accomplished previous ly: (1) Within 8 days after the effective date of this AD, inspect the connection ofEASA AD No.: 2011-0025-E

EASA Form 111 Page 2/2 Time(s): two lines (extinguishing and LP bleed line s) at frame 42 in the rear compartment, in accordance with Dassault Aviation S ervice Bulletin (SB) F50-519. (2) In case of findings, before next flight, proper ly re-install theses lines, in accordance with Dassault Aviation SB F50-519. (3) Within 10 days after accomplishment of the insp ection, as required by paragraph (1) of this AD, report the inspection res ults (including no findings) to Dassault Aviation.

Ref. Publications: Dassault Aviation Service Bullet in F50-519, original issue dated 18 February 2011. 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 safety assessment has requested not to imple ment the full consultation process and an immediate publication a nd notification. 3. Enquiries regarding this AD should be referred t o the Airworthiness Directives, Safety Management & Research Section, C ertification 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 Tec hnical 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

.