EASA AD No.: 2013-0140

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EASA AIRWORTHINESS DIRECTIVE

AD No.: 2013-0140

Date: 12 July 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 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].

Design Approval Holder’s Name:

FOKKER SERVICES B.V.

Type/Model designation(s):

F28 aeroplanes

TCDS Number: EASA.A.037

Foreign AD: Not applicable

Supersedure: None

ATA 51 Structures General – Center Wing Rear Spar – Modification

Manufacturer(s): Fokker Aircraft B.V.

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

Reason: Two cases have been reported of heavy aileron control caused by aileron cables 

stuck in a clump of ice in the wheel bay. Investigation results revealed that, in 

case of water accumulation on the top of the center wing torsion box inside the

cabin (zones 171 and 172), the water drains through the existing drain holes/gaps 

in the web plates on top of the center wing rear spar. The water could then 

accumulate in the area where the aileron control cables are situated. With the 

freezing temperatures normally encountered during flight, ice accretion could 

occur near or even on the aileron control cables.

This condition, if not corrected, could result in reduced control of the aeroplane. 

For the reasons described above, this AD requires the installation of drain tubes 

on the center wing rear spar.

Effective Date: 26 July 2013
EASA AD No.: 2013-0140

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Required Action(s) 

and Compliance

Time(s):

Required as indicated, unless accomplished previously.

Within 36 months after the effective date of this AD, install water drain tubes on 

the center wing rear spar in accordance with the instructions of Fokker Services 

Service Bulletin (SB) SBF100-51-021.

Note: More information on this subject can be found in Fokker Services All 

Operators Message AOF100.184.

Ref. Publications: Fokker Services SBF100-51-021 dated 23 April 2013.

Fokker Services All Operators Message AOF100.184 dated 23 April 2013.

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 12 June 2013 as PAD 13-074 for consultation until

10 July 2013. No comments were received during the consultation period.

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 EL, Hoofddorp, The Netherlands;

telephone +31-88-6280-350; facsimile +31-88-6280-111;

E-mail: technicalservices@fokker.com. The referenced publication can be 

downloaded from www.myfokkerfleet.com.