EASA AD No : 2009-0168

EASA Form 110 Page 1/2 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2009-0168

Date: 03 August 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 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 ensured by a ccomplishing any applicable ADs. Consequently, no person may opera te an aircraft to which an AD applies, except in accordance with t he requirements of that AD, unless otherwise specified by the Ag ency [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) exemptio n]. 

### Type Approval Holder’s Name :

Fokker Services B.V. Type/Model designation(s) :

F28 Mark 0070 and Mark 0100 aeroplanes

TCDS Number : EASA.A.037

Foreign AD : Not applicable

Supersedure : This AD supersedes EASA AD 2008-0193 dated 21 October 2008.



### ATA 76 Engine Controls – Fuel Fire Shut-off Valve Actuator – Replacement

Manufacturer(s): Fokker Aircraft B.V.

Applicability: F28 Mark 0070 and Mark 0100 aeroplanes, all serial numbers, if an actuator Part Number (P/N) 9409122 or P/N 53-0013 is installed on one or both fuel fire shut-off valves.

Reason: Due to their position on the aeroplane, fuel fire shut-off valve actuators P/N 9409122 are susceptible to freezing, which has an adverse effect on the operation of the valve. Also, due to various causes, the failure rate of actuator P/N 9409122 is higher than expected. Failure or freezing of the actuator may prevent the flight crew to close the fuel fire shut-off valve in case of an engine fire. Aeroplanes serial numbers 11244 through 11441 were delivered from the production line with actuators P/N 9401037 (“chimney type”) installed. However, on some aeroplanes, thes e actuators have subsequently been replaced in service with actuators P/N 9409122 (using mounting blocks P/N 7923505) on one or both fuel fire shut-off valves. As a result, those aeroplanes are also affected by this unsafe condition.
To address and correct this unsafe condit ion, EASA issued AD 2008-0193, requiring the replacement of all P/N 9409122 fuel fire shut-off valve actuators with new actuators developed by the manufacturer Eaton Aerospace, P/N 53- 0013, which have improved reliability an d are less susceptible to freezing. Following the introduction of actuat or P/N 53-0013 in service, Eaton Aerospace reported manufacturing and design errors on actuators with P/N 53-0013. As a result of these errors, the top-cap of the actuator may become loose, possibly leading to actuator fa ilure. Eaton Aerospace has eliminatedEASA AD No : 2009-0168

EASA Form 110 Page 2/2 these problems by introducing a new actuator P/N 53-0027 and Fokker Services have published SBF100-76-020 to introduce these improved actuators on aeroplanes. As a consequence of EASA AD 2008- 0193, both P/N 9409122 and P/N 53- 0013 fuel fire shut-off valve actuators are currently installed on aeroplanes affected by this AD. For the reasons described above, th is EASA AD supersed es AD 2008-0193 and requires the installation of new P/N 53-0027 actuators. This AD also prohibits the installation of P/N 53-0013 actuators in accordance with SBF100-76-018 (which has bee n cancelled), as prev iously required by EASA AD 2008-0193.

Effective Date: 17 August 2009

Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previously: (1) Within the next 15 months after t he effective date of this AD, accomplish either paragraph (1.1) or (1.2) below, as applicable to aeroplanes configuration: (1.1) For aeroplanes in pre-SBF100-76-018 configuration: Remove each fuel fire shut-off valve actuator with P/N 9409122 from the aeroplane and replace it with a fuel fire shut-off valve actuator P/N 53-0027 and accomplish the associated modifications in accordance with Part 1A or 1B, as applicable, of the Accomplishment Instructions of Fokker Services SBF100-76-020. (1.2) For aeroplanes in post-SBF100-76-018 configuration: Remove each fuel fire shut-off valve actuator with P/N 53-0013 from the aeroplane and replace it with a fuel fire shut-off valve actuator P/N 53-0027 in accordance with Part 2 of the Accomplishment Instructions of Fokker Services SBF100-76-020. (2) After the effective date of this AD , do not install a P/N 53-0013 fuel fire shut-off valve actuator on any aeroplane.
Note: After installation of P/N 53-0027 fuel fire shut-off valve actuators on an aeroplane, the requirements of EASA AD 2007-0122 no longer apply to the fuel fire shut-off valve actuat ors installed on that aeroplane.

Ref. Publications: Fokker Services SBF100-76-018 dated 31 July 2008, which has now been superseded and cancelled by SBF100-76-020 dated 20 April 2009. 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. The required actions and the risk a llowance have granted the issuance of a Final AD with Request for Comments, postponing the public consultation process after publication. 3. Enquiries regarding this AD should be referred to the Airworthiness Directives, Safety Management & Re search Section, Certification Directorate, EASA. E-mail ADs@easa.europa.eu

. 4. For any question concerning the tec hnical content of the requirements in this AD, please contact: Fokker Services B.V., Technica l Services Dept., P.O.Box 231, 2150 AE Nieuw-Vennep, The Netherlands; telephone +31 252 627 350; facsimile + 31 252 627 211; e-mail: technicalservices.fokkerservices@stork.com The referenced publication can be downloaded from www.myfokkerfleet.com