EASA AD No : 2015-0006

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EASA AIRWORTHINESS DIRECTIVE

AD No.: 2015-0006

Date : 15 January 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 operate 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) exemption].

Design Approval Holder’s Name:

DASSAULT AVIATION

Type/Model designation(s):

Mystère-Falcon 50, Mystère-Falcon 900, 

Falcon 900EX, Falcon 2000 and Falcon

2000EX aeroplanes

TCDS Numbers : EASA.A.062 and EASA.A.008

Foreign AD : Not applicable

Supersedure : None

ATA 39 Lightning – Anti-Collision Light Bonding – Modification

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

Applicability: Mystère-Falcon 50, Mystère-Falcon 900, Falcon 900EX, Falcon 2000 and Falcon 

2000EX aeroplanes, all serial numbers, as defined in Appendix 1 of this AD.

Reason: An occurrence was reported where a Falcon 2000 aeroplane experienced an inflight lightning strike, which caused severe damage and induced the loss of some 

aeroplane functions. The investigation results revealed that the entering point of 

the lightning was at the WHELEN anti-collision light located on the top of the 

vertical fin tip.

When the lightning strike hit the anti-collision light, an electric arc occurred

between the aeroplane structure and the anti-collision light and created a 

conductive path by which the lightning current entered inside the aeroplane.

Further analysis has determined that the electrical bonding between the 

WHELEN anti-collision light, Part Number (P/N) 01-0790044-09, and the fin tip 

fairing or the No. 2 engine air intake cover is insufficient to withstand a lightning 

strike.

In case of severe lightning, this condition, if not corrected, could lead to an unsafe 

condition (loss of electrical power and/or of essential functions) possibly resulting 

in reduced control of the aeroplane.

To address this potential unsafe condition, Dassault Aviation developed a 

modification (mod) to improve the WHELEN anti-collision light bonding when the 

anti-collision light is located on top of the vertical fin tip or on No. 2 engine air 

intake cover, and issued several Service Bulletins (SB) to modify all affected 

aeroplanes in service.

For the reasons described above, this AD requires modification of the anti-
EASA AD No : 2015-0006

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collision light bonding.

Effective Date: 29 January 2015

Required Action(s) 

and Compliance 

Time(s):

Required as indicated, unless accomplished previously:

Within 24 months after the effective date of the AD, modify the anti-collision light 

bonding in accordance with the instructions of the applicable Dassault Aviation 

SB, depending on aeroplane model and configuration, as specified in Table 1 of 

this AD.

Table 1 – Applicable Dassault Aviation SB

Aeroplane Affected Configuration(s) SB

Mystère-Falcon 50 see Appendix 1 F50-481

Mystère-Falcon 900

see Appendix 1 – Group 1 F900-372

see Appendix 1 – Group 2 F900-378

Falcon 900EX

see Appendix 1 – Group 1 F900EX-285

see Appendix 1 – Group 2 F900EX-305

Falcon 2000 see Appendix 1 F2000-337

Falcon 2000EX see Appendix 1 F2000EX-108

Ref. Publications: Dassault Aviation SB F50-481 original issue, dated 22 August 2007.

Dassault Aviation SB F900-372 original issue, dated 22 August 2007.

Dassault Aviation SB F900-378 original issue, dated 19 September 2007.

Dassault Aviation SB F900EX-285 original issue, dated 18 July 2007.

Dassault Aviation SB F900EX-305 original issue, dated 19 September 2007.

Dassault Aviation SB F2000-337 original issue, dated 25 July 2007.

Dassault Aviation SB F2000EX-108 original issue, dated 25 July 2007.

The use of later approved revisions of these documents 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 18 September 2014 as PAD 14-166 for consultation 

until 16 December 2014. The Comment Response Document can be found at 

http://ad.easa.europa.eu/.

3. Enquiries regarding this AD 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 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
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Appendix 1 – Applicability Definition

Aeroplanes Configuration – AD applicable on all serial 

numbers on which Mod (see Notes 1 to 3)

Except aeroplanes modified 

through (see Note 4)

Mod embodied 

in production

SB in service

Mystère-Falcon 50 M1853 has been embodied in production or in 

service through SB F50-241

M2083 or M3094 SB F50-257

Mystère-Falcon 900 Group 1: M1682 has been embodied in 

production or in service through SB F900-182

M5381

Group 2: M1682 has been embodied in 

production or in service through SB F900-182 

and Mod M1947 has been embodied in 

production or in service through SB F900-176

M5386

Falcon 900EX Group 1: M1682 has been embodied in 

production or in service through SB F900EX-025

M5381

Group 2: M1682 has been embodied in 

production or in service through SB F900-025 

and Mod M1947 has been embodied in 

production or in service through SB F900EX-19

M5103 or M5386

Falcon 2000 M331 has been embodied in production or in 

service through SB F2000-44

M810 or M1061 

or M2778

SB F2000-111

Falcon 2000EX M1802 has been embodied in production M810 or M1061 

or M2778

Note 1: All Mod and all SB specified in the Table above are from Dassault Aviation.

Note 2: Mod M2083, SB F50-257, Mod M1947, SB F900-176, SB F900EX-19, Mod M5103, as applicable, 

introduce fin tip SATCOM fairing, in production or in service.

Note 3: Group 1 : Aeroplanes with Whelen anti-collision light located on top of vertical fin tip,

Group 2 : Aeroplanes with Whelen anti-collision light located on top of air intake engine No. 2.

Note 4: The excluded aeroplanes as specified in the Table above embody either one Mod in production 

or one SB in service, as applicable.