## Service Bu ll et in Fo kker Services B . V. 1. Genera l ln form atio n A . General (1) This Service Bulletin Appendix supersedes the instructions in Service B ull etin SBF28-28·047 with regard to the ins ta ll a tion of bonding on the main tan k l eve l control pilot valve conduiL

" This Service B u lletin Is associated w ith the Fuel Tan k Safety Program " Fuel S ystem - I ntrodu ction of Im p rove d B on di ng Pro vi si ons I n side th e Fue l Tanks , B . Table of Contents • Section 1 : General Inform ation • Section 2 · Planning I n f orm a tion • Section 3 : Material Information • Section 4 · Accomplishment I nstructions • Service Bulleti n Quality Reporting Form and attachments : • List of drawings • Required drawmgs C . Service Bu ll etin Revision Hist ory Revi s ion



### -

Scacus Released Da te l""'m ..,,, Refer to footer Reas o n for Re v isi on First Release



## I**~evfs on** **:** 

## I Re l eased date (Mmm d<IIVY • _I JuiiS/14 Security class · UNCLASSIFIED 

# I F28 Appendix SB no . SBF28-28-058/APP01 e.,..,..,. 

### f"CC.•_..,, ... ..**~Ilv** '"•.._....,.. '""-""'"".....,.,,....,._..ev•ft_,...**,...,_,u•~••.,..--•"'tt~- "~.,**  ................ilioM'>I. "'.._ ._.. ...**f/111,,~-*"** ......... ...t .,...._ .. !!"

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### ... t Page 1 of 20

## Service Bulletin Fokker Services B.V . 2. Planning Information A. Effectivity (1) F28 Mark 1000 through 4000 aircraft serial number(s) : 11003thru 11241 , 11991 and 11992 . (2 ) Producti on version of th1s change: Not applicable . B . Concurrent Requ i rements (1) At the same time as you do this Service Bu ll etin Appendix, 

### it i s convenient to do :

- SBF28-57-<l98 - WINGS - Outer Wings- Rework of the Ho l es in the Outer Wing Upper Skin Panel Re inforcement Structure for the Outer Wing Fuel Quanti ty Tank Units . C. Reason (1) The design review of the F28 Mk 1000 thru 4000 fuel system , In accordance with the guidelines related to FAA SFAR 88 and JAA INT/POU25/12 , revealed that an unsafe condition may develop i n the wing tanks because no controlled bonding provisions are present on a number of crit ical locations , inside the Fuel Tank or connected to the Fuel Tank Wall. (2) Th is Service Bulletin g ives in st ructions for the In troduction of additional electrical bonding provi sions that require opening of the fuel tank access panels . D . Descrlptton

Status · Released (1) This Serv1ce Bulletin Appendix tells you how to install extra or i mproved bonding i nside the fuel tanks to the : Transfer Jet Pumps.

- Ventilat ion Float Valves. CWT Overflow Valves .

- Level Control Pilot Valves Wiring Condu i t (if PRE SBF28-28-047 ). Fuel Quan tity Tank Un i t (FQTU ) no . 7 mounti ng flange ( if PRE SBF28-57..098) . NOTE . For aircraft 

### .EQ§I SBF28-57-098 , the FQTU no . 7 mounting flange bonding is Included In SBF28-28-059 . FQTU no . 7 attachment screws (If PRE SBF28- 57-098) . NOTE For aircraft POST SBF28-57-098 , the FQTU no . 7 attachment screws bonding Is I ncluded i n SBF28-28-059 . (2) Th i s Servi ce Bulletin Appendix supersedes the Instructions In Service Bulletin SBF28-28 -047 w ith regard to the Installation of bond in g on the main tank level contro l pilot valve conduit 

# I**~evls lo** **·** 

# I Released date (Mmm ddiW) Jul15114 Security class : 

# l F28 Appendox SB no. : UNCLASSIFIE D SBF28-28-058/APP01**~·rot•""""** 

## , ..**..,....11,,•~~4!!"Wiole"** 

### IV**!tf>.~-~** ,. _.___,htN• 

### _..,.,,_..._tV ... __ ... t_.._llllitU ll.ootl!••tw .......,_-' .. ..,,_ ._.... __ .......,.. --·-··---· · ...**~-** ............ .,.,., ..**~~"""""-'""'""'** __ ,,.... .......... """..... 19,_.,. 

# It------ -ll'! ...... _,_,., ... .,, ...... _ ... 

# ,\1 Page 2of20

## Service Bulletin Fokker Services B.V. E . Compliance (1) Recommended Fokker Services recommends the accomplishment of this Service Bulletin Appendix within 7 years (84 months) after the date of Issue (January 9th , 2014) of the Proforma of this Service Bulletin. NOTE 1 : Do this Service Bulletin Appendix at a scheduled tank opening before the above compliance date . NOTE 2: EASA Airworthmess Directive 2014-0108 has been issued with respect to th•s subJect. Refer to the EASA website for details on th•s AD . F . Approval (1) The technical content of this document is approved under the authority of DOA ref . EASA. 21J.059 . G . Manpower

Status Released (1) Approximately 20 man-hours are necessary to do this Service Bulletin Appendix on one aircraft. This table of manpower will help you to schedule and do this Service Bulletin Appendix· Instructions Men Man-hours Elapsed time (hours) Remollill 2 4 .0 2. 0 Modification 

# } Inspection 2 10 . 0 5 . 0 I nstallatio n 2 4 .0 2. 0 Testing 2 2.0 1.0 Total 20. 0 10.0 NOTE · Thts estimate does not Include the ttme necessary: for the paint to dry and/or the sealant to cure ; to drain the fuel tanks ; to venttlate the fuel tank necessary for safe maintenance ; to refuel the atrcraft. (2) The estimated hours are for direct labor done by experienced personnel They are calculated based on the conditions given in SBF28-00-001 (Service Bulletin Introduction , section 2 . C .. " Manpower'). 

# I**~evision ·**  

# I Released**date ~-**  d<llyyl Jul 1 5 1 14 Seeunty class UNCLASSIF I ED 

# I F28 Appendix 58 no. : SBF2S.28-058/APP01 

## 4:.....,....,...,.,"....,.,,,.....**~** 

## •..r ..**~~~-~~o.-.** 

### ,.,. __ " ... ....,..,....• 

## ., ,_._, ,v ,., • .**~** 

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## .. - ..... -..._ ...111,.. , ... _ ....\1 Page 3 of20

### H . We i ght and Balance (1) Weight change . 

### + 0.42 kg (0 . 92 lb) . Inde x change 

### + 0 . 003. I . Electrical Load Data (1) Direct Current (DC) Loads . (a) Not changed. (2) Alternating Current (AC) Loads : (a) Not changed . 

### J . Software Accomp l ishment Summary (1) Not applicable. 

### K. References (1 ) F28 Maintenance Manual ( MM ) F28 Illustrated Pans Catalog ( I PC) Fokker Standards 

### & Process Manual (SPM) F28 Structural Repa i r Manual ( SRM) EASA A i rworthiness Directive 2014-0108 F28 Service Bulletin (SB) :

- SBF28·28·047

- SBF28-28-050

- SBF28-28-059

- SBF28-57-097 .

- SBF28-57 -098 Fokker drawi ng(s) : refer to attachment " List of drawings" Fokker internal reference :

- ECR 015105 . 

## Service Bulletin Fokker Services B . V .

Status Released 

# I Released dale (Mmm ddi)Y} Jul1511 4 Security class : UN CLASSIFIED 

# I F28 Appendix SB no. : SBF28-28-0581APP01 Ctf:tl'f'll M"f!! •-• r,r-•**~IV** .•**~** ...**~~~** f1'4 ....,._""- ...-.., ..,,..,..,. ._.,. av •" -- M . _..._..._,. ........ f"t .,.._.II .... -**·---~--~~~~~** ... _.....**.,.,~1-"HW** ............., ........__ ...._ .....,.....__ .....,., ....... .,•• , ....... .-.-- ....;« ... 

## _,... __ ..,.._,r.., .. .._...._v Page 4 ol20

## Service Bulletin Fokker Services BV L. Pubhcatlons Affected

Status Released (1) This Service Bulletin Appendix affects the publ ications listed be l ow: (a ) Maintenance Documentation

- Fokker F28 Maintenance Manual ( MM ) - chapter 28-00

- chapter 28-12

- chapter 28-21

- chapter 28-41

- Fokker F28 Illustrated Parts Catalog (I PC) - chapter 28-10 -chapter 28-20

- chapter 28-40 NOTE : Manual Change Notifi cation MCNM F28..043 will be published before September 15, 2014 . We do not plan to issue a revision of this Service Bu ll etin Appendix when the MCNM is pubhshed , For preliminary MCNM i nformation , i f required, please contact Fokker Services. ( b ) Maintenance Programs

- Fokker F28 Customized Ma in tenance Program (C MP ) NOTE : The affected maintenance program change is described in the paragraph Special Instructions for Continued Airworthiness (ICA) . (c) Special Instructions for Continued Airworthiness OCAl The effect o f this Service Bulletin Appendix on the speciaiiCA is as follows : YES

- Electrical Wiring Interconnection System (E WIS )

- Fuel Tank Safety ( FTS ) 

### X NO 

### X NOTE : Existing Fue l All items 280000 -02 and 280000-08 and CDCCL items 4 and 5 ( refer to SBF28-28-050 revision 2 or subsequent reviSIOn) are effective and not affected . After accomplishment of th is Service Bulle tin Appendix change the instructions in MM tasks 28-00 , 28-12 , 28-21 and 28-41 , in accordance with the instructions in MCNM -F28 -04 3 . (d ) Operational Documentation N ot affected . (2) Report to Fokker Serv1ces that th1s Serv1ce Bulletin Appendix has been carried out on the apphcable**a~rcraft .**  

## I**~evlsion ·**  

# IReleased date (Mmm Gdlyy) Jul1 5114 Seeority clus . UNCLASSIFIED 

## I F28 Appendix SB no. : _l SBF26-28-058/APP01

,..,...,. Ao1l ....**~~** W,f .....

llt**a.- ~**  li lt f'f"-**~** f .... -- I' U ..................**"-"~** t.V . .. _ _.. ... f _._.. ... ..._ ............. ,......._ t/ 11111 .,.._**·~-·--clo! ura** **iii._, .,-~.Mf#,** 

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_ _ ..**1!' hr"""'"** **-• .....,.** **_,. otcn~~** **,.....•~•~** 

### _.,. ___,r......,.._.. ,v Page Sol 20

## Service Bulletin Fokker Services B.V. (3) You have the poss1bility to send your SB feedback to Fokker Services per · service Bulletin Reporting Quahty Form ". Th1s form is located on the last Servtce Bulletin Appendix page. (4) For incorporation of this Service Bulletin Appendix in yo u r documentation refer to SBF28-00-001 (Service Bulletin Introduction, section 4 "Incorporation of Service Bulletins i n Documentation of Fokker Services"). (5) Accomplishment of this Service Bulletin Appendix is only complete w ith incorporat ion of the manua l change(s) , per the ref MCNM/ MCNO , Temporary Revision (if applicable) or General Revis io n . M . Interchangeability or lntermixability or Parts (1) Not applicable .

Status Released Security class UNCLASSIFIED 

# I**~evlsion** 

# I Rel<!ased date : (Mmon """'l Jul15/14 

# 1

F28 AppendiX SB no •. SBF28-28-058/APP01**~:;~** ,..,..._ '""'""Wf'"•wa.tw'"av t'no...ho1!'1o'lf"""l**1.,......,._~** 

### ......,.,f,_.....,._..**tv"' _.,.."..,** **~,...,.,.** . .. ,.**~~** .. 

### .........,.of_..,_ _ a..,......_ •**...._._"'"' "'** **~...__....._** 

### ..**., ,,...~**  

### "'.,.,... .,..,, ............**~-..- •,......** **-u."** 

### ..-•,..,..t'J'" ' .., .. ... ..,._ ""'"""".... .,.111 _IM.,__,...._IIIIIUW......., .. O"o/ Page6ol20

## Service Bulletin Fokker Services B.V . 3. Materi al Information A . Matenal - Price and Availability (1) You can order the necessary parts aga inst list price. B . Material Required (1) These parts , w hich are necessary to complete th is Service Bulletin Appendix on 1 aircraft, are not part of the mod ki t. New Pa !l Num ber Q!y Ke:iword Into Qlg Ea!l N ym!;le r**ln~I!:!.!CtiQns/** • ' ·1 Disgos ition AN73506 2 Clamp Local source AS3578-137 2 0-ring Local source FON2 - 3306-0501 0 2 Washer Local so u rce FON9-1901C75C 2 Lead Local so ur ce MS21042L3 

### 2 Nut Local so u rce NAS1133-3 2 Bolt Local source N AS1 14900332K 2 Washer Local so u rce NAS1252-10L 4 Washer Local source NAS1581C3T6 4 Screw Local source NAS6603-1 

### 2 Bolt Local source SAE-AS7351 032 

### 2 C la mp Loca l source ALODINE 1200 AR' Coating Local source PR 1422A AR' AR' Sealant Local source PR 1782B A R ' Sealant Local so u rce PR 1560MC AR' Coa ti ng Local source MEK AR' So lvent Local source WHITE SP I RIT AR' AR' So lvent Local source N OTES : • Use as much as necessary 

# •' Applicab le to aircraft serial numbers 11 003 thru 11241 , 11991 an d 11992• • 2 Applicab le to arrcraft serial numbers 11003 thru 11241, 11991 and 11992 in P RE SBF28-28-04 7 configuration. C . Tooling- Price and Avai lab ility (1) N ot applicable . 

### D . To91ing Reqwed ( 1 ) Not applicable .

Status : Released Security cla$S· UNCLASSIFIED r

### ~evision 

# I Released date ('Mmtn t:kl/WJ Jul15 114 

# I F28**Append~<** SB no .: SBF28-28-0581APPOI**~.,...,..** .v ·....-.- 

### ..,.r_.. ""'-'" 

### ''J tl .,.J ............. J "'• __., "''-........, .,- 

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## -"'·-....,...,....._"r"'•"''"-•"' Page 7 oi20

## Service Bulletin Fokker Services B.V . 4 . Accomplishment Ins t ructions General : • In general , use MM chapter 20 . standard practices-airframe , as guide line for the aircraft

mod i fication . • Refer to the SPM for. • The mounting of electrical bonds on metal parts. chapter TH NC4 . 610 . • If not Indicated on drawi ng, sea l a ll electrical bonds ace to TH4 . 61 0 . • For Standards and Process Manua l (SPM) references refer to " MyFokkerFieetcom 

### >

Documentation and select SPM ". • For the application of seal i ng compound refer to MM chapter 20-20. For a l ternative

sealants see Notice to Operators NT0-262 , refer to " MyFokkerFieetcom 

### > Documentation > Service Publications and se l ect NTO ".

· For the I nstallati on of bolts and screws refer to SRM chapter 51-32-01 and/or TH6 . 3400. • If not indicated on drawing , in the accomplishment Instructions or referenced MM

procedures , use standard application and I nspection of torque va l ues ace to MM chapter 20-30-05 and/or TH6 . 3202 . ·For the application of Primer & Paint refer to the MM chapter 51-30 and/or TH6 . 73xx.

- For the application of Alod i ne refer to SRM chapter 51-10 -04 and/or T H 6 . 73xx . WARNING : BE CAREFUL WHEN YOU USE THE CONSUMABLE MATER I ALS . OBEY THE INSTRUCTI ONS AND MANUFACTURER' S HEALTH AND SAFETY I NSTRUCTIONS . WARNiNG : BEFORE ENTER I NG FUEL TANKS ENSURE THAT ALL SAFETY PRECAUT I ONS DETAI LED IN MM CHAPTER 28-11-00 ARE OBSERVED . WARNING : OBEY THE SAFETY PRECAUTIONS , JET FUEL IS EXPLOSIVE AND POISONOUS . WARNING · BE CAREFULL WHEN YOU USE METHYLETHYLKETONE (MEK) AND SEALING COMPOUND .

SIBI US' Re l eased Securit y cl ass UNC lAS SI F I E D PUT ON SAFETY GOGGLES AND PROTECTIVE CLOTH I NG . DO NOT BREATH THE GAS ( OR DUST). DO THE WORK IN AN AREA WHICH HAS A GOOD FLOW OF A I R. IF YOU GET MEK OR SEALING COMPOUND IN YOUR EYES OR ON YOUR SKIN , FLUSH YOUR EYES WITH WATER FOR AT LEAST 15 MINUTES , CLEAN YOUR SKIN WITH SOAP AND WATER AND GET MEDICAL HELP . IF YOU ACCIDENTLY DRINK OR EAT M . E.K., DRINK WATER AND MAKE YOURSELF VOMIT AND GET MEDICAL HELP . IF YOU ACCIDENTLY DRINK OR EAT SEALING COMPOUND , MAKE SURE YOU VOMIT AND GET MEDICAL HELP . M . E . K . AND SEALING COMPOUND ARE POISONOUS AND HIGH LY F LAMMABLE.

J**~e vi** **JO .**  

# I Released date · pAmm d"'WJ Jul1 511 4 

# I F28 Appendix SB n o .:

S BF28-28-058/APP01**~** .q"'r"" ,._, .-, '•••a..... IV**ct" ·----~**  

### '*'• •-- 'Ito ..... _ ....**-r,-~.._** e .. · til •• _ _...."" • -fiMolllUooo.**·~-""** ,._ • .,.., • !IN- 

### "'"""',._W ••OIW<'t.**,_...,...~~~~fl** ... _..._ • •••**~** ..,_._., ., ,_- fllo..,**,...._..,.~,...WI-,.,,.,....**

### ....._....,......,,..._._., .........**'*>~~** t )'-" e.__._ ..**,~**...**_N,.._-..-.-r~rMwa..-tv** P ag eS of 2 0

## Service Bulletin Fokker Services B . V . A . Remove all e l ectrica l power, refer to the MM, chapter 24·00-00 . B . Set B ATT switch to OFF a nd disconnect the batteries (refer to MM , chapter 24-31·03) . C. Put up wamlng signs to tell pe rs ons : " DO NOT CO NNECT THE E L ECTRICAL POWER ".
" DO NOT CONNECT THE BATTERIES '. D . Remove access panels . NOTE: This Service Bulletin requ ire s de-fue li ng , drain ing and venting of the fuel t anks In accordance with MM chapter 28-11-00 . (1) Get access to work area , remove and keep access panels : ( a) 73A and 74 A ( refer to MM . cha pter 28-11-06) . ( b) 73J and 74J (re f er to MM . chapter 28-1 1-06) . Step (2) is only applicable if step G . i s t o be perf ormed. (2) Get access to work area , remove and keep access panels : ( a ) 61A and 62A (refer to MM , chapter 06-30) . Step (3) is on l y applicable If step H . ts to be performed . (3} Get access t o work area, remove and keep access panels : (a ) 73E and 74E (ref er to MM , chapter 28·11-<l6) . (b) 83B and 84B (refer to MM , chapter 06-30). E . Installation of Improved Bonding Provisions for the Transfer Jet Pumps .

Status . Re l eased 

### Perf orm step E. for LH and RH Transfer J e t Pump . Refer to drawing IN69522 sheet 2 for rework of LH Transfer Jet Pump . Refer t o drawing W69622 sheet 2 for rework of RH Transfer Jet Pump . (1} Remove and discard the bonding clamp and attached parts of Transfer Jet Pump tn collector tank at the positton as ind icated on drawmg . (2) Rework and prepare the bond surface for the bonding clamp on the Transfer Jet Pump in the collector tank , at the position as Indicated on drawing, in accordance with NC4 . 6101920 (re fer to TH4 of SPM for instructions and matenals). Use : • 1 Bo l t pn NAS6603-3 • 1 Washer pn NAS 1149D0332K



## . 1 Clamo pn SAE-AS7351 032 Revlston · 

# I Released date : (Mmm dd.Y'Jl



# - Jul15 1 14 Security class 

# 1F28 Append •• SB no . UNCLASSIF I ED SBF28-28-058/APP01**.:~,.** u ,.,._ _,_.,_,.,. •• ,..,_,. S\t r .._ ,.._.._,**r~" --~'"**  wr ._,._ .,,. __ ........,., v**'-,.~~en** •**_,..~..._. ~**  "'.,.- w ... ..... ..._**,....,__.,,~'-~H"'-••IIf•-"'-'*_..** 

### _ __.**.,,.,.... ,.** **,........_~_...""'._._,.,,.,..,u** ......,........ 

### ,....,.tov•••-•...-• .,..,_...,_., 

## _.,..

# __

# "_

..,_ ., 

# .... ._

# .. " Pago9ol20

## Service Bulletin Fokker Services B . V . NOTE . A ll electrical bonds must be sealed in accordance wtth SPM NC4 .610, 5 . 3 , Finishing Requ rrements 5.6, Flnishrng with Sealing Compound . CAUTI O N . IN STALL THE CONNECTI ON IMMEDIATELY AFTER THE CONTACT SURFACE I S CLEANED , TO PREVENT CORROSION OF THE CONTACT SURFACES . DO NOT TOUCH THE CLEANED SURFACE WITH A BARE HAND , THE SEALING COMPOUND WILL N OT BOND TO A GREASY SURFACE . (3) Apply a fi ll et sealant on the rn stalled bolt , washer, clamp and terminal i n accordance with SRM chapte r 5 1-20-0. Use :

- AR Sea l ant pn PR 1422A (4) Restore the tank sealing in accordance with SRM chapter 51-20-0 . Use:

- AR Cleaning c loth

- AR So l vent

- AR Coating pn Methyl Ethyl Ketone ( MEK ) pn PR 1560 M C NOTE : For a l ternative sealan ts/coatings see N otice to Operators NT0-262 . (5) Remove dust and grease from the prepared area . Use :

- AR Solvent (whi te spirit) pn WH I TE SPIRIT F . I nstallation of Improved Bonding Provisions for the Ventilation Float Valves .

Status : Release<l Perform s tep F . for LH and RH Ventilation Float Valves . Refer to drawrng W69315 sheet 1 tor rework of LH venti la tion float valves . Refer to drawmg W69385 sheet 1 for rework of RH ventilation float valves . ( 1 ) I f required for access , remove and k eep the ventilation float valve, refer to MM task 28-12-01 . (2) Rework and prepare the bond surface for the inboard and outboard ventilation float 

### valves . at the pos itions as indicated on d rawing as View A and View B , in accordance w i th NC4 . 610/940 ( refer to TH4 of S PM for rnstructions and materia ls). NOTE : All electrical bonds must 

### be sea l ed i n accordance with SPM NC4 .610, 5 .3, Finishing Requ i rements 5.6 , Finishing with Sealing Compound . NOTE : Th i s bonding code applies to two screws holes per valve , use the locatro ns at the position as indicated on drawing . CAUTION : INSTALL THE CON N ECTION IMMEDIATELY AFTER THE CONTACT SURFACE IS CLEANED , TO PREVENT CORROSION OF THE CONTACT SURFACES J**~eV4sion :**  

# I Released date· (Mm.m 04Wl J u l1 5114**Sect~rtly** class UNCLASSIFIED 

# IF28 Appendix SB no .. SBF26-28-0581APP01**~M~.,.._."''"'""'-IlV** moo-.,._.._ Tl'r" ___**..._.....yr-~•••\1 -~-~CO'I** **~-""""!octto** .. -. _.,.,...,.....__ " __ .,,_,.. • ..,..,....,..., _ __,_. •**.,.""'-.ot•lhl.,..., .,_..._c_....,...,"""""** **-~" t**  __**•.,,.•W•....,. 7..,.._,.,.,.,_~.-"'**  _.,. __ _._,..,.,,..,. .. t..Mc ... .**.~** Page 10o120

## Service Bulletin Fokker Services B . V . DO NOT TOUCH THE CLEANED SURFACE WITH A BARE HAND . THE SEALING COMPOUND WILL NOT BONO TO A GREASY SURFACE . (3) Install the vent il ation noat valve (refer to MM . chapter 28-12-01), i f removed'" step B .(1). (4) Apply a fi ll et sea l ant on the installed bolt, wa sher and nut i n acco rdance w i th SR M chapter 51·20·0 . Use :

- AR Sea l ant pn PR 1422A (5) Remove dust and grease from the prepared area . Use :

- AR Solvent ( wh i te spirit) pn WHITE SPIR I T Step G . is on l y app li cable to Aircraft Seria l N umbers 11016, 11018 , 11020 , 11024 , 11028 thru 11030 , 11033 , 11038, 11041 , 11042 , 11045, 11047 thru 11049,11056 , 11072 thru 11074 , 11076 ,11079 , 11082, 11084 , 11088 , 11089 ,1 1097 ,11 099 , 11100 , 11102 . 11104 , 11114 , 11117 , 11118 , 11121 , 11124 , 11125 , 11136 , 11137 , 11143 , 11145thru 11148, 11150 , 11151 , 11153, 11 1 78 , 11183, 11184 , 11186,11192 , 11195 , 112 05 , 1 1207 , 11208 , 11213 thru 11218, 11232 and 11992 . G. Installation of Improved Bonding Provi sions for the Center Tank Overflow Valves .

Status : ReJeased 

### Perform step G. for LH and RH Center Tank Overflow Valves . Ref er to drawing W69522 sheet 1 for rework of LH Center Tank overflow va l ve . Refer to drawing W69622 sheet 1 for rework of RH Center Tank overflow valve. (1) Remove and keep the Center Tank overflow valve , refer to MM task 28 -21-09. (2 ) Remove and keep the nuts and washers that hold the Center Tank overflow valve . (3) Prepare the bond surface on the front spar under the two washers of the Center Tank overflow valve , at the pos i t ion as Indicated on drawing , in accordance with NC4 . 610/939 ( refer to TH4 

### of SPM for i nstructions and materia l s ). NOTE : All electrica l bonds must be sea l ed i n accordance with SPM NC4 .61 0 ; 5 . 3 . F in ishing Requ iremen ts 5 . 6. Finishing with Sealing Compound NOTE : This bonding code applies to two screws holes ; use the locations at the posiuon as ind i cated on draWing . CAUTION : INSTALL THE CONNECTION IMMEDIATELY AFTER THE CONTACT SURFACE IS CLEANED , TO PREVENT CORROS I ON OF THE CONTACT SURFACES . DO NOT TOUCH THE CLEANED SURFACE WITH A BARE HAND , THE SEALING COMPOUND WILL NOT BONO TO A GREASY SURFACE . 

## I**~eVJS on** **:** 

# I Released date : {Mmm dd,YY ) Jul15114 SeC<Jnty dass UNCLASS IF IED 

# l F28 Appendix SB no .. SBF28-28-<158/APP01**~** ..**AI~.,..._.,-, J~f"** **a...u.l.<o~ !fiMI~** **l fM--~;n'""'**  - ... r ..**~o;**.. .,_,.. &\· M ..**~ ~**  • ....... _.-.,. o...,.a• 11'!o 

### .,..,._ o lll •" ..,...motf.

··-- .... ,.._""__ ,... __**~~~** ... . _ ... . .... ..,1">10 ..... """ .....**.,.,~~** ...**.,._..,...,... _IMnl~**  ........ "f'b ........**~** ..................**~** 

# ______ .,,_,....,...._.., 

# ... , Page 1 1 ot 20

## Service Bulletin Fokker Services B.V. (4) Install the Center Tank overtlow valve (refer to MM . chapter 28-21-09) . Use the bolts, nuts and washers that have been removed in step B . (2) for installation of the Center Tank overflow valve . (5) Apply a fillet sealant on the 1nstalled bolt , washers and nut in accordance with SRM chapter 51-20-0. Use :

- AR Sealant pn PR 1422A (6) Remove dust and grease from the prepared area. Use :

- AR Solvent (white spirit) pn WHITE SPIRIT Step H . is only applicab l e to aircraft senal numbers 11 003 thru 11241 , 11991 and 11992 in PRE SBF28-28-047 configuration . H. Installation of Improved Bonding Provisions for the Level Control Pilot Valves Wiring Conduit

SIS IUS Released 

### Perform step H . for LH and RH Level Control Pi l ot Valves Wiring Conduit. Refer to figure 1 (LH shown , RH opposite) and 2 for rework of Level Control Pilot Valves Wiring Conduit. (1) Remove and keep the bolt , nut and washer, as indicated In figure 2 . (2) Prepare the bond surface around the bottom bolt hole from the rear spar conduit feed through , as indicated on figure 1 and 2 , In accordance with NC4 .610/942 (refer to TH4 of SPM for I nstructions and materials) . Use :

- 1 Nut (re -used part) pn MS2 1042L3 1 Bolt (re-used part) pn FON2-1614V03-05 1 Washer pn FON2-3306-05010 1 Washer (re-used part) pn NAS 1252-10L 1 Lead pn FON9 -1901C75C NOTE: All electrical bonds must be sealed in accordance with SPM NC4 .610; 5.3 , Fimshing Requirements 5 . 6 , Fimshing with Sealing Compound . NOTE : The bonding lead is Installed inside the fuel tank under the nut as I ndicated i n figure 1 and 2 for aircraft serial numbers 11 003 thru 11188 , and under the bolt head for aircraft serial numbers 11189 thru 11241, 11991 and 11992 . CAUTION . CAUT ION : BE SURE THAT THE CUPAL WASHERS (ITEM 4 F I GURE 2) ARE IN STALLED WITH THE COPPER SIDE OF THE CUPAL WASHERS AGA INS T THE BONDING LEAD TERM INAL INSTALL THE CONNECTION IMME.OIATEL Y AFTER THE CONTACT SURFACE IS CLEANED , TO PREVENT CORROS ION OF THE CONTACT SURFACES . J**~ev1s!on** 

# I Released date · (M mm Od!WJ Jul15/14 Secun1y class UNCLASSIFIED 

# I F28 AppendiX SB no .. SBF28-28-058/APP01 c......,.. ... ..,.**,_..,,.....,~**.. ll.'l**h.,~!** h .. .,_......" " ., .,. 

## ..,..,...l't,__., ._..'v**•a~r- ·~--**  .. .,. --- tJ ... ...-**111-.-·~·,.~-~~-·.,....,•-•-c;e"..._.** 

## .,.....**_.,_,............_~---- --~.....,..lrf~**  

# ......**c~--·-~-­** ..."'• ,...,•.,..._...• ..**t~l'""••.._**. ...., Page 12ot 20

## Service Bulletin Fokker Services B.V. DO NOT TOUCH THE CLEANED SURFACE WITH A BARE HAND . THE SEALING COMPOUND WILL NOT BOND TO A GREASY SURFACE (3) Prepare the bond surface for the bonding c lamp on the wiring conduit from the main tank level control pilot valve , as indicated on figure 1 and 2 , in accordance with NC4 . 610/91 0 (refer to TH4 of SPM for Instructions and materia l s) . Use : 

### 2 Washer pn NAS 1252-1 OL 1 Bo l t pn NAS1133-3

- 1 Clamp pn AN735D6 - 1 Nut pn MS21042L3 NOTE : All electrical bonds must be sea l ed in accordance with SPM NC4 . 610 ; 5 . 3 , Finishing Requirements 5.6 , Finishmg with Sealing Compound . CAUTION : INSTALL THE CONNECTION IMMED I ATELY AFTER THE CONTACT SURFACE IS CLEANED , TO PREVENT CORROSION OF THE CONTACT SURFACES . DO NOT TOUCH THE CLEANED SURFACE WITH A BARE HAND, THE SEALING COMPOUND WILL NOT BOND TO A GREASY SURFACE . (4) Apply a fillet sealant on the i nstalled bolts , washers . nuts and clamp, i nstalled I n steps (2) and (3) , In accordance with SRM chapter 51-20-0 . Use :

- AR Sea lant pn PR 1422A (5 ) Remove dust and grease from the prepared area . Use :

- AR Solvent (wh i te spirit) pn WHITE SPIRIT Step 

### I. thru M . is only applicable to a i rcraft serial numbers11 003 thru 11241 , 11991 and 11992 in PRE SBF28-57 -098 configuration . Perform step I . thnu M . for LH and RH Fuel Quantity Tank Unit. 

### I. Removal of Fue l Quantity Tank Un it (FQ TU ) no . 

### 7.

S1a1us · Released 

### (1 ) Remove and keep the attachment screws from FQTU no .

### 7 mounting flange , at the position as indicated on drawi ng . (2 ) Carefully pull the FQTU from the tank (do not disconnect electncal wmng f rom FQTU ) and temporary hold FQTU 10 position . Refer to MM chapter 28-41-0 1. CAUTION : CARE SHOULD BE TAKEN NOT TO SCRATCH , BEND OR SCORE THE OUTER TUBE ASSEMBLY AS SUCH DAMAGE MAY NECESSITATE FQTU REPLACEMENT . ( 3 ) Remove and discard the 0-ring seal from the w i ng top sk1 n mounting jo i nt 

# l**~ev Mln**  

# IRe leased date. (Mmm ddfW'J Jul 1 51 1 4 Securi ly cl ass UNCLASSIFIED 

# IF28 Appendix SB no .. SBF28-21Hl58/APP0 1**c........,..M,.._,....._.-,~**

### ............,.. .., ,. ,,"'-"'**,.,.~.,~~**

### .......**~.,,.,...,.~**

### ... ev ... _...,.,_._....,..., 

## "'*'"""'"'".,._. ........_**~~~~** 

### .. ..._.,.____*' _ _,..,.,.,.. ><rrr--"*-* .,., , liN.,**flff(.......-..--....,.~'~"'-""....,...'-~"••...-y....._.~,., ~__.,** **,.,.____.,~ -"'·---~""""'"'** **'** .. s.....n.•v Pag e 13 ol2 0

## Service Bulletin Fokker Services B.V. J . Application or surface treatment for Fuel Quantity Tank Unit (FQTU) no . 7 mounting flange . (1) Rework surface treatment of the flange mounted area on the upper skin with Alodine 1200 In accordance with SRM chapter 51-10-4 for Alodine treatment. Use :

- AR Conversion coating pn Alodlne 1200 K. Installation or I mproved Bonding Provisions for Fuel Quantity Tank Unit (FQTU) no. 7 attachment screws . Refer to drawing W69315 sheet 2 for rework of LH Fuel Quantity Tank Unil Refer to drawing W69385 sheet2 for rework of RH Fuel Quantity Tank Unit. (1) Prepare the bond surface of the FQTU attachment screws , at the pos ition as indica ted on drawing, in accordance with NC4 .61 0/937 (refe r to TH4 of SPM for instructions and materials) . NOTE : This bonding code applies to two screws holes : use the locations at the position as indicated on drawing. CAUTION . INSTALL THE CONNECTION IMMEDIA TELY AFTER THE CONTACT SURFACE IS CLEANED , TO PREVENT CORROS I ON OF THE CONTACT SURFACES . DO NOT TOUCH THE CLEANED SURFACE WITH A BARE HAND, THE SEALING COMPOUND WILL NOT BOND TO A GREASY SURFACE . (2) Remove dust and grease from the prepared area. Use :

- AR Solvent (white spirit) pn WHITE SPIRIT 

### L Prepare Fuel Quantity Tank Unit (FQTU) no . 7 .

Status· Re leased (1) If the atrcraft is in the pre SBF28-28-D54 configuration . then examine the FQTU that must be msta lled , as follows: (a) Ensure that the FQTU is "clean and free of any deposits and that the mounting holes are unobstructed" . (b) Make sure that the FQTU IS not corroded , bent or broken . (2) If the aircraft is i n the post SBF28-28-054 configuration , then do these steps · (a) Make sure that the self-locking nuts includ i ng the washers below these nuts and the stud-ends are fully covered with a l ayer of the sealant (b) Make sure that the layer of sealant Is not damaged . (c) If the layer of sealant i s damaged , then do these steps . 

# 1**~eV\sion .**  

# I Released date : (M mm esd'WJ Jul15114 Secunty ciass UNCLASSIFIED 

# IF28 Append r x SB no .: SBF23-23-058/APP01**.;~M~._._.,,**.....t.r.q:"a', lhoN..,.......,..**,,.__.,......"""""'~~·-.._ft8V•f -.-.**  ..**__.,.,.~,** ...... » ... tll'_.fl _. - "__. •**.,_.,..,.~ --~-**  ... )f- 1"-._, fiiN<"I ......**--~....._** .... ,.,. ...

d_!_l.,..f..._,_lr,,.._. n.:IIU.OI q ..... o <'OC . .......... . I :OU"
- ........**-..-,.-~r**......... s..- , av Page 14 ol2 0

## Service Bulletin Fokker Services B.V. 

## 1 Make sure that 

### !he mstallation of the FQTU to the mounting-flange is tight 

## 1 If necessary, re-tighten the three self-locking nuts .**~** Replace the layer of sealant ( PR 14228) on the self-locking nuts including the washers below these nuts and !he stud-ends, ref . MM chapter 20-20- 02). M . Install Fuel Quantity Tank Unit (FQTU) no. 7. ( 1 ) Fit a new 0-ring seal, lubricated 

### witl1 Vaseline W-P-236 or with fuel , in the groove of the FQTU mounting point. Use :

- 1 0-rfng pn A$3578-137 (2) Carefully insert 

### !he FQTU probe into the fuel tank. (3) Align the six mounting holes and secure the probe with six retained screws that have been removed in step A.(2) ; refer to MM chapter 28-41-01 . New screws are to be Installed on the locations as indicated on drawing . Use :



### - 2 Screw pn NAS1581C3T6 (4) If the aircraft is in the pre S8F28-57-098 configuration , then do these steps : (a) Measure the clearance between the reinforcement plate and :

- Electrical wiring connections on the terminal block on the FQTU probe

- The metal probe of the FQTU . (b) If the clearance is less than 3 mm (0 . 12 in) , then refer to S8F28-57-097 or S8F28-57-098 for corrective action. (c) Make sure that there Is a minimum clearance of 3 mm (0 . 12 In) between the metal parts of the FQTU probe and the adjacent structure and/or other metal parts In the fuel tank. (5) Seal off the reduced countersink screw head leveVftush to the sk1n surface t o obtain an aerodynamic smooth finish . Use

- AR Sealant pn PR 17828 N . Restore atrcraft to normal (refer to MM , chapter 28-11-00) . 0 . Remove all tools . materials and equipment from the fue l tank. Make sure that the area Is clean . ( 1) Make sure that there are no particles or debris in the fuel tank . NOTE It' s Important that fuel tank i s free of any conductive materia ls . such as Steel wool , or any other conductive abrasive material ;

SUI IUS ' Released 

### Sewnty class UNCLASSIFIED Rivets or rivet-heads, Milling and grind i ng residues and cur1s . J**~ev•s on** **:**

' Re leased date ( MII'Im ddfr; l Jut15114 

# I F28 Append i X SB no .. SBF28-28-058/APP01**~·At,.,..** ·-...lllr'oO>."'**~•v** 

## ,,,.._, f,.._,.

_ _ _ ........,.,,,• .• ._ ,.. av .,."_..,,_"" ..**•~·** •-....a•.., ...,_.._., . ,..,_....**•~,.ae.o.,.** ..**~.,n,.,_....,_ ,**  • ...__.,..**v,....~·"'•oo..-..rt.,.,...___.._..,.,...._.._~~.._~v._~ ~--,•~.,,..,..,.**  

## _ .... ,.., ..... ,_.,J..... ._" . .... Page 15 ol20

## Service Bulletin Fokker Services B .V. (2) 

### lr inspecuon Is not satisfactory, then c l ean the fuel tank as necessary. P . I nstall access pane l s. (1) I nsta ll access pane l s : (a) 73A and 7 4A ( referto MM , chapter 28 -11-06) . (b) 73J and 74J ( refe r to MM , chapter 28-11-06). Step (2) Is o nly app l icable if step G. I s performed . (2) Install access pan els : (a) 61A and 62A (refer t o MM , chapter 06-30 ) . Step (3) Is only appl icab l e i f step H . Is performed . (3) Insta ll access panels : (a) 73E and 74E ( referto MM , cha pter 28-11-06) . (b) 838 and 848 ( refer to MM , cha pter 06-30). Q . Restore electrical power. (1) Restore all electrical power; refer to the MM , chap t er 24-00- 00 . (2) Remove the wammg signs t o te ll persons : "DO NOT CO NN ECT T H E ELECTRICAL POWER" "DO NOT CONNECT THE BATTERIES " . R . Do the fo ll owing functiona l test to verify correct operation :

Status : Released ( 1 ) Perform the tank c l osure inspection: re f er to MM chapter 28-00-00 INSPECTION/ CHECK , section 6. (2) Refuel the applicable fuel tank as described in Chapter 1 2 , SERVICING , and check the access panels for fuel l eakage. Steps (3 ) thru (6) are only applicable 1 f step G. is performed . ( 3) On th e fuel contro l panel ensure that the center tank shutoff valve switch Is SHUT. M ove the selector switch t o REF . AUTO and move the power switch to ON . Check that the power light IS ON , the shutoff caution light is ON and the green overflow light Is OUT (4) M ove the center tank shutoff switch to ON . Check that the amber light is OUT and the green overllow light i s ON. 

## I**~evls on** **.** 

# IReleased date . (Mmm dGJWI Jut 1511• Security class UNCLASS IFIED 

# IF28 Append ix SB no .: SBF28-28-058/APP01**~"'.,.,..** .._...._,._.....,..'-I'll ;t.,.**~-·** til., .. .....,._ . . .. ..**.._~.,,..,..,** •-.. IV 

### •n _ _. ,**.-r~** , _,. ..,. ,, . .. ' ""1-0f\N' .,__ f1 001 .,... • ..._**~- -~**  

### ·-..-ltl---....fi# •"Y,_. IN,_, ..... -...tl .,.(.....,...._ ___ 

### ..,...,...,, _....,.o_l ........ lft"' ' ...... ... .. .... ........ __ ,..__. , _
_ ,.. _**_.,.~~,** .....**~flv** Page 160120

## Service Bulletin Fokker Services B . V . (5) Select the shutoff sw1tch to SHUT . Check that the amber light is ON and the green l igh t is OUT. (6) Move the power switch to OFF and ensure that its red Light extinguishes . S. Remove all tools , matenals and equipment from the work area . Mak e sure that the area is clean.

Status · Releas<>d Secu rity cl ass UNClASSIFIED 

# I Released date· t t.tmm**OO IYY~**  Jul 151 14 

# I F28 Appendix SB no .: SBF28-28-058/APP01 c.,.+f'!IM...,_..._,.,.,,., •**.._.~** 

## *'"" .•,__,..,.,, t,.._....,_ ....... .,fwwe-•v ""- .. . _.._. .. .,.._ ..**~.n** .. ,. , .,.._., .. , ,.._ .. .....,...,_., *"-'* ..... , __ ,.. __ ..,.,,..,. .. ....., .......... .. .

### 1,_._ ____,_,..... ,.. __**.....,---~"' -"** **..,tot ,....-**  

### .......__.. , _ .. _.,..,......,.,..,__.,.,_. ... ,tN<fti.V Page 1 7 of 20Status . Released Security dass UNCLASSIFIED 

# ..**.· ~**  

# Lo 

# lc -, VIEW 8 

# - Service Bulletin Fokker Services B.V.



## ,

VIEW (



### Figure 1 (Typical**Sltua~on)** 

### Main Tank level Control Pilot Valve 

## I**~eV'Is1on :**  

# I Released date . (Mmm dd/W) Jul 15 114 

# IF28 Appendix SB no .

SBF28-23-{)5atAPP01**.c.~..,......,.,.....,~ ••** **·• ~** 

### .. &v ,-:"'• • ,,..._. r,.. _,... ..., ....,. ...._..,,...."., ,_ev • ._**~** ... • ......,._,.**""~•"'""** ,_.... . ,.._**•-~-••u.._** 

## •**....,.~.-..,,.o.e.,....,_** 

### • ....,,_.IIWMl.,.,..,....,.....,_._...,.__,....,,..llr_ .. __**~..,_"Y••...,..,...,._,.** 

### ._,_.,_.,.. -N--.....--flrp,.........._.81 Page18of 20

### PRE-MOD



### POST-MOD 

## Se rvi ce Bulletin Fo kke r Serv i ces B.V.

BO'ITOM BOL T INSTALLATION 

### ONLY Remon and keen; I.**o~ r**  N !\SI2S'Z·JOL l. Nu ' M S11042Ll 3. Boh FON2- 1 6 l dVOJ..QS



### BOTTOM BOLT INSTALLA T ION 

### ONLY 

### ln!l!!lli 2.. N • u 1 . Bo l t 4 , 

### w ..,hcr 

### s. l.<ad I. W H h tr**~** I Wuller 6 Bolt 

# '· Cl>mp 8 Wut.ct 9 . 

# "'"' MS210<2W R>Nl · I61 4 VO)o0$ R>N2-) 306-QS010 RlN9-1901C7SC NAS1252·10L.**NAS1252-10 ~**  NASII3J·l AN73SD6 NASil.ll· IOI. MS2 1 0421.J Figure 2 (Ty p ica l Si t u a ti on ) M a i n Tank Leve l Control Pi l o t Valve- Installation of B onding Lead

Status Released Securlly class UNCLASS I F I ED r**~eVISIOO '**  

# l Released date· ( M mm ddfW) Jul15114 

# I F28 Appendix SB no

SBF28-28-058/APP01 o!""'nl"';lli"''Oft .. 

### .-..,,_._.....'1 * •• ,....._......, ;,.,. __ ....**......,tv,_~**

### ........... \1 ... __...,.,._._ ..**_~·** .. ·-· .......... - lll....,..c.................................. .__..... ,..."" ...... Ooi ... II..

### .,Mr......__....,..._.u ..**....,.... _~~-...**  

### ......**.,....,.i~•** .....-..., 

# -----·""-''---"" Page 19 of 20

## Service Bulletin Quality Report ing Form Fokker Services B . V . SB Title: lntroduCllon or Improved Bonding Provisions Inside the Fue l Tanks. Use this Service Bu ll etin Ouahty Reporting Form to tell us your perception or the quality or the Servi ce Bulletin. The reported data that you provide to us will be used to analyze areas of difficulties and to take corrective actions to further im prove the quality or our Service Bulletins . We than k you for the time you h ave taken in completing th is form . • Rate t h e scale of 1 to 4 , with 1 the lowest score and 4 the h io hest score . Chapters • 

### 1 2 

### 3 4 a) Quahty ratmg of thiS SB (ovefllll) 

### 0 0 0 0 b) Quality rating of the Planning l nfomlatlon 0 0 

### 0 0 c) Quality rating of the Materiallnfo tmatJon 

### 0 0 0 0 d) Quality flltlng of the AccomplishmenttnsllUCCJOns 

### 0 0 0 0 e) Quality rating of the Tes tlnstrucllOns (if applicable) 

### 0 0 0 0 I) Quolity rating of tl1e Illustrati ons or Drawings (d applicable) 0 

### 0 0 0 g) Time l y delivery of tl1e SB 

### 0 0 0 0 If you have had difficulties with one of the chapters of this Service Bulletin and/or one or you r rating(s) Is lowe r than 3 , please give a short description or the is sue . Comments :

Operator: Name I Ti tl e : Please return this form to : Fokker Services B .V .

Status : Released Securtty class · UNCLASS IFI ED Technica l Services , Ouahty Department P.O. Box 1357 2130 EL Hoofddorp The Netherlands Fax : +31 (0) 88 6280111 or E-mai l :**tecl1n calserv~ces@fokker** **com** 

# I**~evlslon :**  

# I Released date ( Mmm 

### oow 1 Jul 15114 

# l F28 Appendix SB no .: SBF28-28-058/APP01 c....,.... ,.....,.., ,.,_,"',.. ••..,...,... .......**IT""r-~** 

### r .... - . ...... .._.... .,,_ ._...,v lth __ 

### ,.. .,. , ...,.....,,_.......,.,,.._, fl .. -v•-

,. __ ...... .,.,

• ..,.,.... ... .,,.,.._ , .,...,••,, .,. IWIPI .,• • .,.. ., .,. ,...,.....,. 

### c_ ...,...._,.._, _. .. .. _... ,....., , ........ '-111'1 1**~- .---** **-~ elt-** **4** ... __ .,...._fiOO!"""t_,ol,•-'1 -... &v Page20of 20

## List of Drawings 

## I Parts Lists Drawing 

### W69315 W69315 W69385 W69385 W69522 W69522 W69622 W69622

Status Released Secunty class . UNCLASS IFIE D Sheet 001 002 001 002 001 

### 002 001 002 Iss ue 

### B B B B B 

### B B B Title 

## Service Bulletin Fokker Services 

## B. V .

RF FUEL SYSTEM IN MAIN TANK (LH) RF FUEL SYSTEM IN MAIN TANK (LH) RF FUEL SYSTEM IN MAIN TANK (RH) RF FUEL SYSTEM IN MAIN TANK (RH) RF FUEL SYSTEM IN COLLE CTOR TANK ( LH) RF FUEL SYSTEM IN COLLE CTOR TANK ( LH ) RF FUEL SYSTEM IN COLLE CTOR TANK (R H ) RF FUEL SYSTEM IN COLLECTOR TANK ( RH)



# l Released date:

Ju l 15/14 

# I F28 Appendix SB no . SBF28-28.058/ APP01 c...,.... M!?ft••- ..**trr....,~uiV 1110e~** **,._""~..,.-** ...ea..**~r.u..~a.v. ~tkc:..cr..,**  "",.,..,...,.,..,.,.**~N'"'~-a~~...,...,.....,****=::...-=:..:...--:c=.~·*'TIIIJ"'_.** 

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