EASA AD No : 2014-0024

TE.CAP.00110-003 © 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.: 2014-0024

Date: 23 January 2014

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 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) :

Mystère-Falcon 50 aeroplanes

TCDS Numbers: EASA.A.062

Foreign AD: Not applicable

Supersedure: None

ATA 24 Electrical Power – Protective Plates – Inspection / Modification

Manufacturer(s): Dassault Aviation (formerly Avions Marcel Dassault-Bréguet Aviation)

Applicability: Mystère-Falcon 50 aeroplanes, serial numbers 5, 7, 27, 30, 34, 36, 78, 132 and

251 through 352 inclusive; and Mystère-Falcon 50 aeroplanes, serial numbers 2 

through 250 inclusive, if fitted with Honeywell (formerly Allied Signal, Garrett 

AiResearch) TFE731-40-1C engines modified by Dassault Aviation Service 

Bulletin (SB) F50-280.

Reason: One operator experienced an untimely and intermittent indication of slat activity 

on his aeroplane. The results of the subsequent investigation revealed that 

electrical wiring under the glare shield and behind the flight deck front panel 

was chafing with hardware and was short-circuited to ground. This situation 

may have resulted from an incorrect installation of the wiring during a previous 

maintenance action in the area. A design review identified a lack of protection of 

the affected electrical wiring bundle, which would have prevented damage 

caused by chafing with aeroplane structural parts.

This condition, if not corrected, might lead to an electrical short circuit and 

generation of smoke, possibly affecting operation of systems and resulting in

reduced control of the aeroplane.

To address this potential unsafe condition, Dassault Aviation issued SB F50-

530, providing instructions for installation of a protective plate on the electrical 

wiring. 

For the reasons described above, this AD requires modification of the aeroplane 

by installing a protective plate on the electrical wiring.
EASA AD No : 2014-0024

TE.CAP.00110-003 © European Aviation Safety Agency. All rights reserved. 2/2

Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.

Effective Date: 06 February 2014

Required Action(s) 

and Compliance 

Time(s):

Required as indicated, unless accomplished previously:

Within 74 months after the effective date of this AD, install a protective plate on 

the electrical wiring under the glareshield in accordance with the instructions of 

Dassault Aviation SB F50-530.

Ref. Publications: Dassault Aviation SB F50-530, original issue dated 12 November 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. This AD was posted on 19 December 2013 as PAD 13-186 for consultation 

until 16 January 2014. No comments were received during the consultation 

period.

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 / Fax: (33) 1 47 11 89 49.

 For USA, Canada and Mexico based operators:

Help Desk: (1) 800-2FALCON (2325266) / Fax: (1) 201 541 4740.

 All other areas:

Help Desk: (1) 201 541 4747 / Fax: (1) 201 541 4740.