EASA AD No.: 2009 - 0254 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2009-0254 

Date: 01 December 2009 

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 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 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]. 

Type Approval Holder’s Name : 

DASSAULT AVIATION 

Type/Model designation(s) : 

FALCON 7X 

TCDS Number : EASA.A.155 

Foreign AD : Not applicable 

Supersedure : None 

ATA 05 Time Limits / Maintenance Checks - Airworthiness Limitations 

Section - Revision 

Manufacturer(s): Dassault Aviation 

Applicability: All Falcon 7X aeroplanes, all serial numbers, if equipped with DC generators 

part number (P/N) 30089-004 or 30089-005. 

Reason: Time between overhaul (TBO) of DC generator bearings is set at 1 000 flight 

hours (FH) in the airworthiness limitations section of the Falcon 7X Aircraft 

Maintenance Manual Chapter 5.40. 

In service report has shown that the bearing current design cannot sustain the 

current TBO. In order to prevent unscheduled removal of DC generators, TBO 

is reduced down to 650 FH. 

This change is expected to be introduced in the next scheduled revision of 

Chapter 5.40 of Falcon 7X Aircraft Maintenance Manual. 

The purpose of this AD is to require accomplishment of the more restrictive 

maximum time limits for DC generators P/N 30089-004 or 30089-005. 

Failure to comply with those revised maintenance tasks could constitute an 

unsafe condition. 

Effective Date: 15 December 2009 
EASA AD No.: 2009 - 0254 

EASA Form 110 Page 2/2 

Required Action(s) 

and Compliance 

Time(s): 

1. Required as indicated, unless accomplished previously: 

Within 30 days after the effective date of this AD, incorporate the reduced 

maximum time limit defined below into the operator’s approved aircraft 

maintenance programme: 

MPD task Title New max time limit

 24-31-01-350-801 Restoration of the DC generators (bearing) 650 FH (instead of 1 000 FH)

2. For generators which have already exceeded, at the effective date of this 

AD, the new maximum time limit, remove and replace the generators 

before accumulation of 12 FH after the effective date of this AD. 

Ref. Publications: Chapter 5.40 of Falcon 7X Aircraft Maintenance Manual DGT107838 Original 

Issue with TR-02 19/Feb/2008. 

Remarks: 1. If requested and appropriately substantiated, EASA can approve 

Alternative Methods of Compliance for this AD. 

2. This AD was posted on 02 October 2009 as PAD 09-117 for consultation 

until 30 October 2009. The Comment Response Document can be found 

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

3. Enquiries regarding this AD should be referred to the Airworthiness 

Directives, Safety Management & Research 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 / 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