Service Bulletin 

Fokker Services B.V. 

1. General lnformation 

A. General 

(1) This Service Bulletin Appendix supersedes the instructions in Service Bulletin 

SBF28-28·047 with regard to the installation of bonding on the main tank level 

control pilot valve conduiL 

"This Service Bulletin Is associated with the Fuel Tank Safety Program" 

Fuel System - Introduction of Improved Bonding Provisions Inside the Fuel Tanks, 

B. Table of Contents 

• Section 1: General Information 

• Section 2· Planning Information 

• Section 3: Material Information 

• Section 4· Accomplishment Instructions 

• Service Bulletin Quality Reporting Form 

and attachments: 

• List of drawings 

• Required drawmgs 

C. Service Bulletin Revision History 

Revision 

-

Scacus 

Released 

Date l""'m ..,,, 

Refer to footer 

Reason for Revision 

First Release 

I ~evfs on: I Released 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 .,...._ .. !!" ......... ,., ,.,.... ...... "'"" ·..-str--.., ........................... Nil~ • ...,.. 

- ........ .,..-~--F.,..,..._ ... 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) Production version of th1s change: Not applicable. 

B. Concurrent Requirements 

(1) At the same time as you do this Service Bulletin Appendix, it is convenient to do: 

- SBF28-57-<l98 - WINGS - Outer Wings- Rework of the Holes in the Outer 

Wing Upper Skin Panel Reinforcement Structure for the 

Outer Wing Fuel Quantity 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 in the wing tanks because no controlled bonding 

provisions are present on a number of critical locations, inside the Fuel Tank or 

connected to the Fuel Tank Wall. 

(2) This Service Bulletin gives instructions for the Introduction of additional electrical 

bonding provisions 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 improved bonding 

inside the fuel tanks to the: 

Transfer Jet Pumps. 

- Ventilation Float Valves. 

CWT Overflow Valves. 

- Level Control Pilot Valves Wiring Conduit (if PRE SBF28-28-047). 

Fuel Quantity Tank Unit (FQTU) no.7 mounting 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 Included in SBF28-28-059. 

(2) This Service Bulletin Appendix supersedes the Instructions In Service Bulletin 

SBF28-28-047 with regard to the Installation of bonding on the main tank level 

control pilot valve conduit 

I ~evlslo · I Released date (Mmm ddiW) 

Jul15114 

Security class: l F28 Appendox SB no.: 

UNCLASSIFIED SBF28-28-058/APP01 

~·rot•"""" , .. ..,....11,,•~~4!!"Wiole" IV !tf>.~-~ ,._.___,htN• _..,.,,_..._tV ... __ ... t_.._llllitU ll.ootl!••tw .......,_-' .. ..,,_ 

._.... -ll'! ...... __ _,_,., .......,.. --·-··---·

... .,, ...... _ ... ,\1 · ... ~-............ .,.,., .. ~~"""""-'""'""' __ ,,.... .......... """ ..... 19,_.,. It------

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 

Installation 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 15114 

Seeunty class 

UNCLASSIFIED I F28 Appendix 58 no.: 

SBF2S.28-058/APP01 

4:.....,....,...,.,"....,.,,, ..... ~ •.. r .. ~~~-~~o.-. ,.,. __ " ... ....,..,.... • .,,_._,,v ,., •. ~ ................. , ... ..q••••,_-.r .. .,..-. ~~ .... ~ ......... ..... ,_ ... ., ... ~-"""·....,,.."......., ........... .., ... ,._.__, .... ~-lOt .............. -~---··, .. -......~ ......... """"~~ -== .. - ..... -..._ ... 111, .. , ... _ .... \1 

Page 3 of20 
H. Weight and Balance 

(1) Weight change. + 0.42 kg (0.92 lb). 

Index 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 Accomplishment Summary 

(1) Not applicable. 

K. References 

(1 ) F28 Maintenance Manual (MM) 

F28 Illustrated Pans Catalog (I PC) 

Fokker Standards & Process Manual (SPM) 

F28 Structural Repair Manual (SRM) 

EASA Airworthiness Directive 2014-0108 

F28 Service Bulletin (SB): 

- SBF28·28·047 

- SBF28-28-050 

- SBF28-28-059 

- SBF28-57-097. 

- SBF28-57 -098 

Fokker drawing(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} Jul15114 

Security class: 

UNCLASSIFIED 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 publications listed below: 

(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 Notification MCNM F28..043 will be published before 

September 15, 2014. We do not plan to issue a revision of this 

Service Bulletin Appendix when the MCNM is pubhshed, For 

preliminary MCNM information, if required, please contact Fokker 

Services. 

(b) Maintenance Programs 

- Fokker F28 Customized Maintenance Program (CMP) 

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 of this Service Bulletin Appendix on the speciaiiCA is as follows: 

YES 

- Electrical Wiring Interconnection System (EWIS) 

- Fuel Tank Safety (FTS) X 

NO 

X 

NOTE: Existing Fuel 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 this Service Bulletin Appendix change the 

instructions in MM tasks 28-00, 28-12, 28-21 and 28-41, in 

accordance with the instructions in MCNM-F28-043. 

(d) Operational Documentation 

Not affected. 

(2) Report to Fokker Serv1ces that th1s Serv1ce Bulletin Appendix has been carried out 

on the apphcable a~rcraft. 

I ~evlsion· I Released date (Mmm Gdlyy) 

Jul15114 

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._,,r......,.._ .,-~.Mf#, .. ,v .... .........,.,.,..,..tll,'1.,.... _ _ .. 1!' hr"""'" -• .....,. _,. otcn~~ ,.....•~•~ 

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 your documentation refer to 

SBF28-00-001 (Service Bulletin Introduction, section 4 "Incorporation of Service 

Bulletins in Documentation of Fokker Services"). 

(5) Accomplishment of this Service Bulletin Appendix is only complete with 

incorporation of the manual change(s), per the ref MCNM/MCNO, Temporary 

Revision (if applicable) or General Revision. 

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. Material Information 

A. Matenal - Price and Availability 

(1) You can order the necessary parts against list price. 

B. Material Required 

(1) These parts, which are necessary to complete this Service Bulletin Appendix on 1 

aircraft, are not part of the mod kit. 

New Pa!l Number Q!y Ke:iword Into Qlg Ea!l Nym!;ler ln~I!:!.!CtiQns/ • ' ·1 Disgosition 

AN73506 2 Clamp Local source 

AS3578-137 2 0-ring Local source 

FON2-3306-0501 0 2 Washer Local source 

FON9-1901C75C 2 Lead Local source 

MS21042L3 2 Nut Local source 

NAS1133-3 2 Bolt Local source 

NAS1 14900332K 2 Washer Local source 

NAS1252-10L 4 Washer Local source 

NAS1581C3T6 4 Screw Local source 

NAS6603-1 2 Bolt Local source 

SAE-AS7351 032 2 Clamp Local source 

ALODINE 1200 AR' Coating Local source 

PR 1422A AR' AR' Sealant Local source 

PR 1782B AR' Sealant Local source 

PR 1560MC AR' Coating Local source 

MEK AR' Solvent Local source 

WHITE SPIRIT AR' AR' Solvent Local source 

NOTES: • Use as much as necessary 

•' Applicable to aircraft serial numbers 11 003 thru 11241 , 11991 and 

11992 • • 2 Applicable to arrcraft serial numbers 11003 thru 11241, 11991 and 

11992 in PRE SBF28-28-047 configuration. 

C. Tooling- Price and Availability 

(1) Not applicable. 

D. To91ing Reqwed 

( 1) Not applicable. 

Status: 

Released 

Security cla$S· 

UNCLASSIFIED 

r ~evision I Released date ('Mmtn t:kl/WJ 

Jul15114 

I F28 Append~< SB no.: SBF28-28-0581APPOI 

~.,...,.. .v ·....-.-..,.r_ .. ""'-'" ''J tl.,.J ............. J "'• __., "''-........, .,-r ...... ._..a 'I/ .. t . -~ • • ............ _,. ~,..,, ~-11 "" • .,._.... 11""""''""-.,.•tc~cwr •...-.- rl""' ~.,..,.,""'__., ., ..... u.,_., ______ ..,._, _ _ ... ·~ ......,.,.,.. ~ ..., ..... -. • """•__,. .... .,. -"'·-....,...,....._"r"'•"''"-•"' Page 7 oi20 
Service Bulletin 

Fokker Services B.V. 

4. Accomplishment Instructions 

General: 

• In general, use MM chapter 20. standard practices-airframe, as guide line for the aircraft 

modification. 

• Refer to the SPM for. 

• The mounting of electrical bonds on metal parts. chapter TH NC4.610. 

• If not Indicated on drawing, seal all electrical bonds ace to TH4.61 0. 

• For Standards and Process Manual (SPM) references refer to "MyFokkerFieetcom > 

Documentation and select SPM". 

• For the application of sealing compound refer to MM chapter 20-20. For alternative 

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

> Service Publications and select NTO". 

· For the Installation 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 Inspection of torque values 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 Alodine refer to SRM chapter 51-10-04 and/or TH6.73xx. 

WARNING: BE CAREFUL WHEN YOU USE THE CONSUMABLE MATERIALS. OBEY 

THE INSTRUCTIONS AND MANUFACTURER'S HEALTH AND SAFETY 

INSTRUCTIONS. 

WARNiNG: BEFORE ENTERING FUEL TANKS ENSURE THAT ALL SAFETY 

PRECAUTIONS DETAILED 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. 

SIBIUS' 

Released 

Security class 

UNClASSIFIED 

PUT ON SAFETY GOGGLES AND PROTECTIVE CLOTHING. 

DO NOT BREATH THE GAS (OR DUST). 

DO THE WORK IN AN AREA WHICH HAS A GOOD FLOW OF AIR. 

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 HIGHLY 

FLAMMABLE. 

J ~evi JO . I Released date· pAmm d"'WJ 

Jul1 511 4 

I F28 Appendix SB no.: 

SBF28-28-058/APP01 

~ .q"'r"" ,._, .-, '•••a..... IV ct"·----~ '*'• •--'Ito ..... _ .... -r,-~.._ e .. · til •• _ _...."" • -fiMolllUooo. ·~-"" ,._ • .,.., •!IN- "'"""',._ W ••OIW<'t. ,_...,...~~~~fl ... _..._ • ••• ~ ..,_._., ., ,_-fllo.., ,...._..,.~,...WI-,.,,.,.... ..... _....,......,,..._._., ......... '*>~~ t )'-" e.__._ .. ,~ ... _N,.._-..-.-r~rMwa..-tv 

PageS of 20 
Service Bulletin 

Fokker Services B.V. 

A. Remove all electrical power, refer to the MM, chapter 24·00-00. 

B. Set BATT switch to OFF and disconnect the batteries (refer to MM, chapter 24-31·03). 

C. Put up wamlng signs to tell persons: 

"DO NOT CONNECT THE ELECTRICAL POWER". 

"DO NOT CONNECT THE BATTERIES'. 

D. Remove access panels. 

NOTE: This Service Bulletin requires de-fueling, draining and venting of the fuel tanks 

In accordance with MM chapter 28-11-00. 

(1) Get access to work area, remove and keep access panels: 

(a) 73A and 74A (refer to MM. chapter 28-11-06). 

(b) 73J and 74J (refer to MM. chapter 28-1 1-06). 

Step (2) is only applicable if step G. is to be performed. 

(2) Get access to work area, remove and keep access panels: 

(a) 61A and 62A (refer to MM, chapter 06-30). 

Step (3) is only applicable If step H. ts to be performed. 

(3} Get access to work area, remove and keep access panels: 

(a) 73E and 74E (refer 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. 

Released 

Perform step E. for LH and RH Transfer Jet Pump. 

Refer to drawing IN69522 sheet 2 for rework of LH Transfer Jet Pump. 

Refer to 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 indicated 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 (refer to TH4 of SPM for instructions and matenals). Use: 

• 1 Bolt pn NAS6603-3 

• 1 Washer pn NAS 1149D0332K . 1 Clamo pn SAE-AS7351 032 

Revlston· I Released date: (Mmm dd.Y'Jl 

- Jul15114 

Security class 1 F28 Append•• SB no. UNCLASSIFIED 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. All electrical bonds must be sealed in accordance wtth SPM NC4.610, 

5.3, Finishing Requrrements 

5.6, Flnishrng with Sealing Compound. 

CAUTION. INSTALL THE CONNECTION IMMEDIATELY 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. 

(3) Apply a fillet sealant on the rnstalled bolt, washer, clamp and terminal in 

accordance with SRM chapter 51-20-0. Use: 

- AR Sealant pn PR 1422A 

(4) Restore the tank sealing in accordance with SRM chapter 51-20-0. Use: 

- AR Cleaning cloth 

- AR Solvent 

- AR Coating 

pn Methyl Ethyl Ketone (MEK) 

pn PR 1560MC 

NOTE: For alternative sealants/coatings see Notice to Operators NT0-262. 

(5) Remove dust and grease from the prepared area. Use: 

- AR Solvent (white spirit) pn WHITE SPIRIT 

F. Installation of Improved Bonding Provisions for the Ventilation Float Valves. 

Status: 

Release<l 

Perform step F. for LH and RH Ventilation Float Valves. 

Refer to drawrng W69315 sheet 1 tor rework of LH ventilation float valves. 

Refer to drawmg W69385 sheet 1 for rework of RH ventilation float valves. 

(1) If required for access, remove and keep 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 positions as indicated on drawing as View A and View B, in 

accordance with NC4.610/940 (refer to TH4 of SPM for rnstructions and materials). 

NOTE: All electrical bonds must be sealed in accordance with SPM NC4.610, 

5.3, Finishing Requirements 

5.6, Finishing with Sealing Compound. 

NOTE: This bonding code applies to two screws holes per valve, use the 

locatrons at the position as indicated on drawing. 

CAUTION: INSTALL THE CONNECTION IMMEDIATELY AFTER THE 

CONTACT SURFACE IS CLEANED, TO PREVENT 

CORROSION OF THE CONTACT SURFACES 

J ~eV4sion: I Released date· (Mm.m 04Wl 

Jul15114 

Sect~rtly class 

UNCLASSIFIED I F28 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 ventilation noat valve (refer to MM. chapter 28-12-01), if removed'" step 

B.(1). 

(4) Apply a fillet sealant on the installed bolt, washer and nut in accordance with SRM 

chapter 51·20·0. Use: 

- AR Sealant pn PR 1422A 

(5) Remove dust and grease from the prepared area. Use: 

- AR Solvent (white spirit) pn WHITE SPIRIT 

Step G. is only applicable to Aircraft Serial Numbers 11016, 11018, 11020, 11024, 

11028 thru 11030, 11033, 11038, 11041, 11042, 11045, 11047 thru 11049,11056, 

11072 thru 11074, 11076,11079, 11082, 11084, 11088, 11089,11097,11099, 11100, 

11102. 11104, 11114, 11117, 11118, 11121, 11124, 11125, 11136, 11137, 11143, 

11145thru 11148, 11150, 11151, 11153, 11 178, 11183, 11184, 11186,11192, 11195, 

11205, 11207, 11208, 11213 thru 11218, 11232 and 11992. 

G. Installation of Improved Bonding Provisions for the Center Tank Overflow Valves. 

Status: 

ReJeased 

Perform step G. for LH and RH Center Tank Overflow Valves. 

Refer to drawing W69522 sheet 1 for rework of LH Center Tank overflow valve. 

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 position as Indicated on drawing, in accordance with 

NC4.610/939 (refer to TH4 of SPM for instructions and materials). 

NOTE: All electrical bonds must be sealed in accordance with SPM NC4.610; 

5.3. Finishing Requirements 

5.6. Finishing with Sealing Compound 

NOTE: This bonding code applies to two screws holes; use the locations at the 

posiuon as indicated on draWing. 

CAUTION: INSTALL THE CONNECTION IMMEDIATELY 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 BONO TO A 

GREASY SURFACE. 

I ~eVJS on: I Released date: {Mmm dd,YY) 

Jul15114 

SeC<Jnty dass 

UNCLASSIFIED 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 .,..,._olll •" ..,...motf. ··-- ______ .... ,.._"" __ .,,_,....,...._.., ,... __ ~~~ .... _ ... , ........ ..,1">10 ..... """ ..... .,.,~~ ... .,._..,...,... _IMnl~ ........ "f'b ........ ~ .................. ~ 

Page 11 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 applicable 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 Pilot 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 Instructions and materials). Use: 

- 1 Nut (re-used part) pn MS21 042L3 

1 Bolt (re-used part) pn FON2-1614V03-05 

1 Washer pn FON2-3306-05010 

1 Washer (re-used part) pn NAS1252-10L 

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 

Indicated in 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. 

CAUTION: 

BE SURE THAT THE CUPAL WASHERS (ITEM 4 FIGURE 2) 

ARE INSTALLED WITH THE COPPER SIDE OF THE CUPAL 

WASHERS AGAINST THE BONDING LEAD TERMINAL 

INSTALL THE CONNECTION IMME.OIATEL Y AFTER THE 

CONTACT SURFACE IS CLEANED, TO PREVENT 

CORROSION OF THE CONTACT SURFACES. 

J ~ev1s!on I Released date· (Mmm 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 clamp 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 materials). Use: 

2 Washer pn NAS 1252-1 OL 

1 Bolt pn NAS1133-3 

- 1 Clamp pn AN735D6 

- 1 Nut pn MS21042L3 

NOTE: All electrical bonds must be sealed in accordance with SPM NC4.610; 

5.3, Finishing Requirements 

5.6, Finishmg with Sealing Compound. 

CAUTION: INSTALL THE CONNECTION IMMEDIATELY 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 installed bolts, washers. nuts and clamp, installed In 

steps (2) and (3), In accordance with SRM chapter 51-20-0. Use: 

- AR Sealant pn PR 1422A 

(5) Remove dust and grease from the prepared area. Use: 

- AR Solvent (white spirit) pn WHITE SPIRIT 

Step I. thru M. is only applicable to aircraft 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 Fuel Quantity Tank Unit (FQTU) no. 7. 

S1a1us· 

Released 

(1 ) Remove and keep the attachment screws from FQTU no. 7 mounting flange, at the 

position as indicated on drawing. 

(2) Carefully pull the FQTU from the tank (do not disconnect electncal wmng from 

FQTU) and temporary hold FQTU 10 position. Refer to MM chapter 28-41-01. 

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 wing top sk1n mounting joint 

l ~ev Mln I Released date. (Mmm ddfW'J 

Jul 15114 

Securily class 

UNCLASSIFIED I F28 Appendix SB no .. 

SBF28-21Hl58/APP0 1 

c........,..M,.._,....._.-,~ ............ ,.. .. , , .,,"'-"' ,.,.~.,~~ ....... ~.,,.,...,.~ ... ev ... _...,.,_._....,..., "'*'"""'"'".,._. ........ _ ~~~~ .. ..._.,. ____ *' _ _,..,.,.,.. ><rrr--"*-* .,.,, liN., flff(.......-..--....,.~'~"'-""....,...'-~"••...-y....._.~,., ~__., ,.,.____.,~ 

-"'·---~""""'"'' .. s.....n.•v Page 13 ol20 
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 Improved 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 position as 

indicated on drawing, in accordance with NC4.61 0/937 (refer 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 IMMEDIATELY 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. 

(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· 

Released 

(1) If the atrcraft is in the pre SBF28-28-D54 configuration. then examine the FQTU 

that must be mstalled, 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 in the post SBF28-28-054 configuration, then do these steps· 

(a) Make sure that the self-locking nuts including the washers below these nuts 

and the stud-ends are fully covered with a layer of the sealant 

(b) Make sure that the layer of sealant Is not damaged. 

(c) If the layer of sealant is damaged, then do these steps. 

1 ~eV\sion . I Released date: (Mmm esd'WJ 

Jul15114 

Secunty ciass 

UNCLASSIFIED I F28 Appendrx 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 ol20 
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 to 

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 fuel 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 is free of any conductive materials. such as 

Steel wool, or any other conductive abrasive material; 

SUI IUS' 

Released 

Sewnty class 

UNCLASSIFIED 

Rivets or rivet-heads, 

Milling and grinding residues and cur1s. 

J ~ev•s on: 

'

Released date (MII'Im ddfr;l 

Jut15114 

I F28 AppendiX 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 clean the fuel tank as necessary. 

P. Install access panels. 

(1) Install access panels: 

(a) 73A and 74A (referto MM, chapter 28-11-06). 

(b) 73J and 74J (refer to MM, chapter 28-11-06). 

Step (2) Is only applicable if step G. Is performed. 

(2) Install access panels: 

(a) 61A and 62A (refer to MM, chapter 06-30). 

Step (3) Is only applicable if step H. Is performed. 

(3) Install access panels: 

(a) 73E and 74E (referto MM, chapter 28-11-06). 

(b) 838 and 848 (refer to MM, chapter 06-30). 

Q. Restore electrical power. 

(1) Restore all electrical power; refer to the MM, chapter 24-00-00. 

(2) Remove the wammg signs to tell persons: 

"DO NOT CONNECT THE ELECTRICAL POWER" 

"DO NOT CONNECT THE BATTERIES". 

R. Do the following functional test to verify correct operation: 

Status: 

Released 

(1) Perform the tank closure inspection: refer to MM chapter 28-00-00 INSPECTION/ 

CHECK, section 6. 

(2) Refuel the applicable fuel tank as described in Chapter 12, SERVICING, and 

check the access panels for fuel leakage. 

Steps (3) thru (6) are only applicable 1f step G. is performed. 

(3) On the fuel control panel ensure that the center tank shutoff valve switch Is SHUT. 

Move the selector switch to 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) Move the center tank shutoff switch to ON. Check that the amber light is OUT and 

the green overllow light is ON. 

I ~evls on. I Released date. (Mmm dGJWI 

Jut 1511• 

Security class 

UNCLASSIFIED I F28 Appendix 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 

light 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. Make sure that the area 

is clean. 

Status· 

Releas<>d 

Security class 

UNClASSIFIED 

I Released date· tt.tmm OOIYY~ 

Jul 15114 

I F28 Appendix SB no.: 

SBF28-28-058/APP01 

c.,.+f'!IM...,_..._,.,.,,., • .._.~ *'"" .• ,__,..,.,, t,.._....,_ ....... .,fwwe-•v ""-... _.._. .. .,.._ .. ~.n .. ,., .,.._., .. ,,.._ .. .....,...,_., *"-'* ..... , __ ,.. __ ..,.,,..,. .. ....., ............. 1,_._ ____ ,_,....., .. __ .....,---~"'-" ..,tot ,....-....... __..,_ .. _.,..,......,.,..,__.,.,_. ... ,tN<fti.V 

Page 17 of 20 
Status. 

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 15114 

I F28 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 

Service Bulletin 

Fokker Services B.V. 

BO'ITOM BOLT INSTALLATION 

ONLY 

Remon and keen; 

I. o~r N!\SI2S'Z·JOL 

l. Nu' MS11042Ll 

3. Boh FON2-16 l dVOJ..QS 

BOTTOM BOLT INSTALLATION 

ONLY 

ln!l!!lli 

2.. N•u 

1. Bolt 

4, w .. ,hcr 

s. l.<ad 

I. WH htr 

~ 

I Wuller 

6 Bolt 

'· Cl>mp 

8 Wut.ct 

9. "'"' 

MS210<2W 

R>Nl·I614 VO)o0$ 

R>N2-)306-QS010 

RlN9-1901C7SC 

NAS1252·10L. 

NAS1252-10 ~ 

NASII3J·l 

AN73SD6 

NASil.ll· IOI. 

MS210421.J 

Figure 2 (Typical Situation) 

Main Tank Level Control Pilot Valve- Installation of Bonding Lead 

Status 

Released 

Securlly class 

UNCLASSIFIED 

r ~eVISIOO ' l Released date· (Mmm 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 Reporting Form 

Fokker Services B.V. 

SB Title: lntroduCllon or Improved Bonding Provisions Inside the Fuel Tanks. 

Use this Service Bulletin Ouahty Reporting Form to tell us your perception or the quality or the Service 

Bulletin. The reported data that you provide to us will be used to analyze areas of difficulties and to take 

corrective actions to further improve the quality or our Service Bulletins. We thank you for the time you 

have taken in completing this form. 

• Rate the scale of 1 to 4, with 1 the lowest score and 4 the hiohest score. 

Chapters • 1 2 3 4 

a) Quahty ratmg of thiS SB (ovefllll) 0 0 0 0 

b) Quality rating of the Planning lnfomlatlon 0 0 0 0 

c) Quality rating of the MateriallnfotmatJon 0 0 0 0 

d) Quality flltlng of the AccomplishmenttnsllUCCJOns 0 0 0 0 

e) Quality rating of the TestlnstrucllOns (if applicable) 0 0 0 0 

I) Quolity rating of tl1e Illustrations or Drawings (d applicable) 0 0 0 0 

g) Timely 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 your rating(s) Is 

lower than 3, please give a short description or the issue. 

Comments: 

Operator: 

Name I Title: 

Please return this form to: Fokker Services B.V. 

Status: 

Released 

Securtty class· 

UNCLASSIFIED 

Technical Services, Ouahty Department 

P.O. Box 1357 

2130 EL Hoofddorp 

The Netherlands 

Fax: +31 (0) 88 6280111 or E-mail: tecl1n calserv~ces@fokker com 

I ~evlslon : I Released date (Mmm oow1 

Jul 15114 

l F28 Appendix SB no.: 

SBF28-28-058/APP01 

c....,. ... ,.....,.., ,.,_,"',.. •• ..,...,... ....... IT""r-~ r .... - ....... .. _.... .,,_ ._...,v lth __ ,.. .,. ,...,.....,,_.......,.,,.._, fl .. -v•- ,. __ ...... .,., • ..,.,.... ... .,,.,.._, .,..., •• ,,.,. IWIPI ., • • ., .. .,.,.,...,.....,. c_...,...._,.._, _. .... _... ,.....,, ........ '-111'11 ~-.--- -~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. 

UNCLASSIFIED 

Sheet 

001 

002 

001 

002 

001 

002 

001 

002 

Issue 

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 COLLECTOR TANK (LH) 

RF FUEL SYSTEM IN COLLECTOR TANK (LH) 

RF FUEL SYSTEM IN COLLECTOR TANK (RH) 

RF FUEL SYSTEM IN COLLECTOR TANK (RH) 

l Released date: 

Jul 15/14 

I

F28 Appendix SB no. 

SBF28-28.058/APP01 

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