E ASA AD No .: 20 12

- 0 2 40

TE. CAP.0011 0

- 00 3 © 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

. : 20 12

- 0 2 40

Date: 12 November 2012

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 E U 748/2012 , Part 21

. A.3B. In accordan ce 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 ope rate 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:

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

F28 aeroplanes

TCDS Number: EASA.A.03 7

F oreign AD: Not applicable

Supersedure: None



### ATA 28 Fuel

– Centr e Wing Tank Maximum Level Sensor Wiring

– Modification [Fuel Tank Safety]

Manufacturer(s): Fokker Aircraft B.V.

Applicability: F28 Mark 0070 and F28 Mark 0100 aeroplanes, all serial numbers

, if equipped with a centre wing tank

.

Reason: Prompted by an accident of a Boeing 747

- 131 (flight TWA800), the FAA published Special Federal Aviation Regulation (SFAR) 88, and the Joint Aviation Authorities (JAA) published Interim Policy INT/POL/25/12.

The de sign review conducted by Fokker Services on the Fokker 70 and Fokker 100 in response to these regulations revealed that under certain failure conditions of the m aximum l evel (Max Level) s ensor wiring , a short circuit may develop that causes a hot spot on the wiring conduit

, or puncturing of the wiring conduit wall in the tank.
This condition, if not corrected, could create an ignition source in the centre tank vapour space, possibly resulting in a fuel tank explosion and consequent loss of the aeroplane. For the reasons described above, this AD requires the installation of fuses in the M ax L evel sensor wiring and subsequently, the implementation of the associated Critical Design Configuration Control Limitations (CDCCL)

.

Effective Date: 2 6 November 2012E ASA AD No .: 20 12

- 0 2 40

TE. CAP.0011 0

- 00 3 © European Aviation Safety Agency. All rights reserved. 2 / 2 Proprietary document. Copies are not controlled. Confirm revision status through the EASA

- Internet/Intranet. Required A ction(s) and Compliance Time(s): Required as indicated, unless accomplished previously. (1) Within 24 months after the effective date of this AD, install fuses in the wiring of the Max Level sensor (s) of the centre wing tank

, as specified in paragraph (1.1) or (1.2), as applicable: (1.1) For F28 Mark 0100 aeroplanes, s/n 11244 through 11441 inclusive, equipped with c entre w ing b ag tank : in accordance with Parts 1 and 3 of the Accomplishment Instructions of Fokker Ser vices Service Bulletin (SB) SBF100

- 28

- 073. (1.2) For F28 Mark 0070 and Mark 0100 aeroplanes, s/n 11442 and up, equipped with i ntegral c entre w ing tank : in accordance with Parts 2 and 3 of the Accomplishment Instructions of Fokker Services SBF100

- 28

- 073. ( 2 ) CDCCL items : After modification of an aeropla ne as required by paragraph (1) of this AD , make certain that the wiring fuses remain installed on that aeroplane

. (3 ) Compliance with the requirement of paragraph ( 2 ) of this AD can be demonstrated by: ( 3 .1) Revising as follows the approved aircraft maintenance programme on the basis of which the operator or the owner ensures the continuing airworthiness of each operated aeroplane:

I ncorporate the CDCCL item s in accordance with the infor mation in paragraph 1 .L.(1).(c) of Fokker Services SBF100

- 28

- 0 73

, and ( 3 .2) Complying with the approved aircraft maintenance programme described in paragraph ( 3 .1) of this AD. Note: More information on this subject can be found in Fokker Services All Operators Message AOF100. 167#04.

Ref. Public ations: Fokker Services SB F 100

- 28

- 073 dated 10 August 2012. Fokker Services AOF100.167#04 dated 14 August 2012

. 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 0 9 October 2012 as PAD 12

- 128 for consultation until 06 November 2012

. 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: Fokker Services B.V., Technical Services Dept., P.O. Box 1357, 2130 E L, Hoofddorp, The Netherlands; t elephone +31

- 88

- 6280

- 350; facsimile +31

- 88

- 6280

- 111;

e

- mail: technicalservices@fokker.com

. The referenced publication can be downloaded from www.myfokkerfleet.com

.