EASA AD No.: 2013-0052

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EASA AIRWORTHINESS DIRECTIVE

AD No.: 2013-0052

Date: 04 March 2013

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):

Falcon 900EX aeroplanes

TCDS Number: EASA.A.062

Foreign AD: Not applicable

Supersedure: None

ATA 05 Time Limits and Maintenance Checks – Airworthiness Limitations

– Amendment / Implementation

Manufacturer(s): Dassault Aviation

Applicability: Falcon 900EX aeroplanes, serial number (s/n) 97 and s/n 120 and higher

(Falcon 900EX Easy, Falcon 900LX and Falcon 900DX variants)

Reason: The airworthiness limitations and maintenance requirements for the Falcon 

900EX type design relating to Falcon 900EX Easy, Falcon 900LX and Falcon 

900DX variants, are included in Aircraft Maintenance Manual (AMM) chapter 5-

40 and are approved by the European Aviation Safety Agency (EASA).

EASA issued AD 2008-0221 to require accomplishment of the maintenance 

tasks and implementation of the airworthiness limitations, as specified in 

Dassault Aviation Falcon 900EX Easy/900LX/900DX AMM chapter 5-40 

referenced DGT 113875 at revision 3.

Since that AD was issued, Dassault Aviation issued revision 7 of Falcon 900EX 

Easy/900LX/900DX AMM chapter 5-40, which contains new or more restrictive 

maintenance requirements and/or airworthiness limitations and introduces,

among others, the following changes:

- Tasks renumbering,

- Introduction of a Corrosion Prevention Control Program (CPCP),

- Revised overhaul limits for screwjack of flap actuators -3 version;
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- Revised interval for checking the screw / nut play on screwjack of flap 

actuators -3 version;

- Removal of service life limit for screwjack of flap actuators;

- Test of flap asymmetry protection system, with an extended inspection 

interval;

- Inspection procedures of fuselage and wings;

- Check of overpressure tightness on pressurization control regulating valves.

Compliance with this check is required by EASA AD 2008-0072, but AMM 

chapter 5-40 DGT 113875 at revision 7 introduces an extended inspection 

interval;

- Check of overpressure relief valve vacuum supply lines.

The maintenance tasks and airworthiness limitations, as specified in the Falcon 

900EX Easy/900LX/900DX AMM chapter 5-40, have been identified as 

mandatory actions for continued airworthiness of the Falcon EX Easy, Falcon 

900LX and Falcon 900DX variants of the F900EX type design. Failure to 

comply with AMM chapter 5-40 at revision 7 may result in an unsafe condition.

For the reasons described above, this AD requires the implementation of the 

maintenance tasks and airworthiness limitations, as specified in the Dassault 

Aviation Falcon 900EX Easy/900LX/900DX AMM chapter 5-40 DGT 113875 at 

revision 7.

Effective Date: 18 March 2013

Required Action(s) 

and Compliance 

Time(s):

Required as indicated, unless previously accomplished:

(1) After the effective date of this AD, accomplish the following actions, as 

specified in Dassault Aviation Falcon 900EX Easy/900LX/900DX AMM 

chapter 5-40 DGT 113875 at revision 7:

(1.1) Replace each component before or upon reaching the applicable life 

limit, and

(1.2) Within the thresholds and intervals, accomplish all applicable 

maintenance tasks.

(2) In case of finding discrepancies (as defined in the AMM Chapter 5-40 at 

revision 7) during any inspection as required by paragraph (1) of this AD, 

within the applicable compliance time specified in AMM Chapter 5-40 at 

revision 7, accomplish the applicable maintenance procedures for 

corrective actions in accordance with approved maintenance 

documentation.

If no compliance time is identified in the AMM Chapter 5-40 at revision 7, 

accomplish the applicable corrective actions before next flight.

If a detected discrepancy is not identified in Dassault Aviation AMM 

chapter 5-40 at Revision 7, before next flight, contact Dassault Aviation for 

approved instructions and accomplish those instructions accordingly.

(3) Compliance with the requirements of paragraphs (1) and (2) of this AD 

can be demonstrated by:

(3.1) Revising as follows the approved Aircraft Maintenance Programme 

(AMP) on the basis of which the operator or the owner ensures the 

continuing airworthiness of each operated aeroplane:

Incorporate all airworthiness limitations, maintenance tasks, 

applicable thresholds and intervals specified in Dassault Aviation 

AMM chapter 5-40 DGT 113875 at Revision 7,

and
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(3.2) Complying with the approved AMP described in paragraph (3.1) of 

this AD.

(4) Compliance with the requirements of paragraphs (1) and (2) of this AD, or 

as specified in paragraph (3) of this AD, is acceptable to comply with the 

requirements of EASA AD 2008-0072 and EASA AD 2008-0221.

Ref. Publications: Dassault Aviation Falcon 900EX Easy/900LX/900DX Aircraft Maintenance 

Manual chapter 5-40 at Revision 7 (DGT 113875).

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 17 January 2013 as PAD 13-013 for consultation 

until 14 February 2013. 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, 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