## EASA EASAAD No: 2010-0156 

## AIRWORTHINESS DIRECTIVE AD No.: 2010..()156

Date: 03August 2010 Note: ThisAirworthinessDirectiw (AD) is Issued by EASA, acting in accomancewith Regulallon{EC) No 21fiJ20Q8 on behalf of the European Community, .ts Member Stales and of the European third countries L'lal participate in the activities of EASA under fIrticIe 66 of that Regula~OIl. This AD is issued in aocordanc:e with EC 1702J2oo3, Part 21A.3B. In aceoroonce With EC 204212003 Annex t. Pan MA301. the continuIng alrwOl'thlr.ess of an aircraft shall be ensured by aceompli5hing any appro:::ableADs. Consequen~y. no person trlZl ~:e an aircraft to which an AD apelies. except in accordance with !he requirements of that AD, unless otherMse speolied by tIE ~ lEe 204212003 Annex I.Pill' M.A.303] 01'agreed with the Autnority of the Slate of Registry (EC 21snOO8. Article 14(4) exempl>:llli 

### Type Approval Holder's Name: Fokker Services BV Type/Model designation(s) : F28aeroplanes 

## reDS Number: Foreign AD : Supersedure:



### ATA 28
Manufacturer(s): Applicability:


### Reason:

Effective Date:

EASA Form 110 EASAA037 Not applicable None


### Fuel- OuterWing UpperSkin Panel Reinforcement StructureInspection IRework [Fuel Tank Safety]

Fokker Aircraft B.V. (and predecessor companies) F28 Mark 1000, 1000e, 2000, 3000, 3DDDe, 3000R, 3000RC and 4000 aeroplanes, all serial numbers. Further toan accident ofaBoeing 747·131 (flight TWA800), the FAA has published Special Federal Aviation Regulation (SFAR) 88, and the JAA has published Interim Policy INTtP0lJ25112. The design review conducted by Fokker services on the Fokker 

### F28type design in response tothese regulations revealed that, under certain conditions, an ignition source may develop inthewing lank vapour space, due to insufficient clearance between the wiring along the Fuel Quantity Tank Units (FQTU's) and the local reinforcing structure around the upper skin cut-out This condition. ifnot correcled, in combination with flammable ruelvapours, could result inawing tank explosion and consequent loss ofthe aeroplane_ Forthe reasons described above, this AD requires aone-time inspection to investigate ifaclearance of3 mm (0,12 inch) or more isavailable between the FQTU probes wiring and the surrounding reinforcement structure ofthe wing upper skin and corrective rework actions, depending on findings. 17August 2010
Page 112EASAAD No; 2010-0156 Required Aclion(s) Required as indicated, unless accomplished previouSly. and Compliance (1) At ascheduled opening ofthe fuel tanks, but not laler than 84 months Time(s): after lhe effective dale ofthis AD, whichever occurs first, inspect the upper wing skin FQTU hole reinforcement structure for Ihe minimum clearance with the Fuel Quantity Indication probe wiring in accordance with the Accomplishment Instructions of Fokker Services Service Bulletin (SB) SBF28-57-D97. (2) If, during the inspection as required byparagraph (1) ofthis AD, (he minimum clearance isfound to be insufficient, before next night. rework the surrounding structure to remove the possibility ofan ignition source, inaccordance with theAccomplishment Instructions of Fokker Services SBF28-57-097. Fokker Services SBF28-57-097 dated 06 May 2010. Ref. Publications: The use of laterapproved revisions ofthis documenl is acceptable for compliance with the requirements ofthis AD, Remarks: 

# ,. Ifrequested and appropriately substantiated, EASA can approve Alternative Methods ofCompliance for this AD. 2. This AD was posted on 23June 2010 as PAD 10-064 forconsultation until 21 July 2010. Nocomments were received during the consultation period. 3. Enquiries regarding thisAD should be referred tothe AilWorthiness Directives, Safety Management & Research Section, Certification Directorate, EASA. E-mail ADs@easa.europa.eu. 4. Forany question concerning the technical aspects ofthe requirements in this AD. please contact: Fokker Services B.V., Technical Services Dept., 

### P.O.Box231, 2150AE Nieuw·Vennep, The Netherlands; telephOne (31) 252-627-350; facsimile (31) 252-627-211: e-mail: technicalservices. fokkerservices@fokker.com The referenced publication can be downloaded from W¥f',v _myfokkertleel.com

EASAFonn 110 Page'lJ2