Service Bulletin 

 Fokker Services B.V. 

 Prepared Function / Note Date 

 scheidema-ps04192 Jun 25/14 

 Colleague Check 

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 groot-jg01801 FS-TECI Jul 17/14 

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 visser-hv01800 FS-TW Jul 17/14 

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Released date: (Mmm dd/yy) 

Jul 17/14 

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F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with 

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EASA approved procedure for electronic sign-off

F27 Appendix SB 

SBF27-28-072/APP01 

Revision - 

FUEL - GENERAL

The Introduction of Improved Bonding Provisions Outside the Fuel Tanks 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

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Page 1 of 10 

1. General Information

A. General 

(1) Not applicable. 

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 drawings 

C. Service Bulletin Revision History 

Revision Date (Mmm dd/yy) Reason for Revision 

- Refer to footer First Release 

 

FUEL

“This Service Bulletin is associated with the Fuel Tank Safety Program” 

General – The Introduction of Improved Bonding Provisions outside the Fuel Tanks. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 2 of 10 

2. Planning Information

A. Effectivity 

(1) F27 Mark 200 through 700 aircraft serial number(s): 

All. 

 NOTE: The Fuel Tank Safety Program is not applicable to F27 Mark 100. 

(2) Production version of this modification: 

Not applicable. 

B. Concurrent Requirements 

(1) Not applicable. 

C. Reason 

(1) The Design Review of the F27 Mark 200/300/400/500/600/700 fuel system in 

accordance with the guidelines related to FAA SFAR 88 and JAA INT/POL/25/12 

revealed that an unsafe condition may develop 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 do not require opening of the fuel tanks access panels. 

D. Description 

(1) This Service Bulletin Appendix tells you how to: 

- Open Access Panels. 

- Install Bonding Clamps at Three Locations of the Fuel Tank Ventilation Line. 

- Rework and Prepare the Bonding Surface at One (Screw) Location of the Fuel 

Tank Ventilation Line. 

- Close Access Panels. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 3 of 10 

E. Compliance 

(1) Recommended 

Fokker Services recommends the accomplishment of the Service Bulletin 

Appendix within 2 years (24 months) after the date of the original issue (November 

28th, 2013) of the Proforma of this Service Bulletin. 

NOTE: EASA Airworthiness Directive 2014-0100 has been issued with respect to 

this subject. Refer to the EASA website for details on this AD. 

F. Approval 

(1) The technical content of this document is approved under the authority of DOA ref. 

EASA.21J.059. 

G. Manpower 

(1) Approximately 8 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: 

Elapsed time

(hours)

Removal 2 2.0 1.0

Modification

Inspection

Installation 2 2.0 1.0

Testing 2 1.0 0.5

Total 8.0 4.0

1.5

Instructions Men Man-hours

2 3.0

NOTE: This estimate does not include the time necessary for the paint to dry 

and/or the sealant to cure. 

(2) The estimated hours are for direct labor done by experienced personnel. They are 

calculated based on the conditions given in SBF27-00-001 (Service Bulletin 

Introduction, section 2.C., “Manpower”). 

H. Weight and Balance 

(1) Weight change: Nil. 

Index change: None. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 4 of 10 

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) F27 Maintenance Manual (MM) 

F27 Structural Repair Manual (SRM) 

Fokker Standards & Process Manual (SPM) 

EASA Airworthiness Directive 2014-0100 

F28 Service Bulletin (SB): 

- SBF27-28-070 

Fokker drawing(s): refer to attachment “List of drawings” 

Fokker internal reference(s): 

 - ECR 015137. 

L. Publications Affected 

(1) This Service Bulletin Appendix affects the publications listed below: 

(a) Maintenance Documentation

- Fokker F27 Maintenance Manual (MM) - chapter 28-00 

- Fokker F27 Illustrated Parts Catalog (IPC) - chapter 28-10 

NOTE: Manual Change Notification MCNM F27-027 will be published before 

September 17, 2014. We do not plan to issue a revision of this 

Service Bulletin Appendix when the MCNM is published. For 

preliminary MCNM information, if required, please contact Fokker 

Services. 

(b) Maintenance Programs

- Fokker F27 Customized Maintenance Program (CMP) 

NOTE: The affected maintenance program change is described in the 

paragraph Special Instructions for Continued Airworthiness (ICA). 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 5 of 10 

(c) Special Instructions for Continued Airworthiness (ICA)

The effect of this Service Bulletin Appendix on the special ICA is as follows: 

 YES NO 

- Electrical Wiring Interconnection System (EWIS) - X 

- Fuel Tank Safety (FTS) X - 

NOTE: Existing Fuel ALI item 280000-01 and CDCCL item 4 (refer to 

 SBF27-28-070 revision 2 or subsequent revision) are effective and 

 not affected by this change. Change the instructions in MM tasks 

 28-00, in accordance with the instructions in MCNM-F27-027. 

(d) Operational Documentation

Not affected. 

(2) Report to Fokker Services that this Service Bulletin Appendix has been carried out 

on the applicable aircraft. 

(3) You have the possibility to send your SB feedback to Fokker Services per “Service 

Bulletin Reporting Quality Form”. This form is located on the last Service Bulletin 

Appendix page. 

(4) For incorporation of this Service Bulletin Appendix in your documentation refer to 

SBF27-00-001 (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 Intermixability of Parts 

(1) Not applicable. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 6 of 10 

3. Material Information

A. Material – 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 on 1 aircraft, 

are not part of the mod kit. 

New Part Number Qty Keyword Info Old Part Number Instructions/

 Disposition

AN735D16 6 Clamp - - Local source 

F0N2-3306-05010 2 Washer Cupal - Local source 

F0N9-1901C150C 4 Lead - - Local source 

MS21042L3 8 Nut - - Local source 

NAS1100-3-9 2 Screw - - Local source 

NAS1133-3 6 Screw - - Local source 

NAS1149D0332K 16 Washer - - Local source 

PR1422A AR* Sealant - - Local source 

WHITE SPIRIT AR* Solvent - - Local source 

NOTES: * Use as much as necessary. 

C. Tooling – Price and Availability 

(1) Not applicable. 

D. Tooling Required 

(1) Not applicable. 

 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 7 of 10 

4. Accomplishment Instructions

General: 

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

modification. 

- Loosen tubing clamps where necessary. 

- 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 acc to TH4.610. 

- For Standards and Process Manual (SPM) references refer to “MyFokkerFleet.com > 

Documentation and select SPM”. 

- For the application of sealing compound refer to MM chapter 20-60-00. 

- For drilling procedures refer to SRM chapter 51-11-03. 

- 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 acc to MM chapter 

20-50-00 and/or TH6.3202. 

- For the application of Primer & Paint refer to the MM chapter 51-10 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. 

A. Disconnect the external power source (if connected to the aircraft). 

B. Switch the battery master switch to “OFF” and disconnect the batteries. 

C. Put up warning signs to tell persons: 

“DO NOT CONNECT THE ELECTRICAL POWER” 

“DO NOT CONNECT THE BATTERIES” 

D. Get access to work area, remove and keep access panels 90 and 90A for LH area 611, 

and 151 and 151A for RH area 621 (refer to the MM, chapter 06-30). 

E. Installation of Improved Bonding Provisions for the Fuel Tank Ventilation Tubing. 

Refer to drawing W7202-500 sheet 1 for rework of LH and RH Fuel Tank Ventilation 

Tubing. 

Perform steps (1) thru (6) for LH and RH Fuel Tank Ventilation Tubing. 

(1) Determine the position of the bonding point to structure, which you must drill out in 

the stringer as indicated on drawing W7202-500 sheet 1. 

(2) Drill out one hole of 5.3 mm dia. of which you determined the position in step (1). 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 8 of 10 

(3) Prepare the bond surfaces for the three bonding clamps on the Fuel Tank 

Ventilation Tubing, at the positions as indicated in drawing W7202-500 sheet 1, in 

accordance with NC4.610/910 (refer to TH4 of SPM for instructions and materials). 

Use: 

- 3 Clamp pn AN735-D16 

- 3 Nut pn MS21042L3 

- 3 Screw pn NAS1133-3 

- 6 Washer pn NAS1149D0332K 

- 2 Lead pn F0N9-1901C150C 

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

 5.3, Finishing Requirements 

5.6, Finishing 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) Prepare the bond surface for installation of the bonding lead to aircraft structure, at 

the position as indicated in drawing W7202-500 sheet 1, in accordance with 

NC4.610/900 (refer to TH4 of SPM for instructions and materials). Use: 

- 1 Screw pn NAS1100-3-9 

- 1 Washer (cupal) pn F0N2-3306-05010 

- 2 Washer pn NAS1149D0332K 

- 1 Nut pn MS21042L3 

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

 5.3, Finishing Requirements 

5.6, Finishing with Sealing Compound. 

CAUTION: BE SURE THAT THE CUPAL WASHERS ARE INSTALLED WITH 

THE COPPER SIDE OF THE CUPAL WASHERS AGAINST THE 

BONDING LEAD TERMINAL. 

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. 

(5) Apply a fillet sealant on the installed screws, washers, nut, terminal lead and 

clamp, installed in steps (3) and (4), in accordance with SRM chapter 51-20-0. 

Use: 

- AR Sealant pn PR1422A 

(6) Remove dust and grease from the prepared area. Use: 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 9 of 10 

- AR Solvent (white spirit) pn WHITE SPIRIT 

F. Install access panels. 

(1) Install access panels 90 and 90A for LH area 611, and 151 and 151A for RH area 

621 (refer to the MM, chapter 06-30). 

G. Restore electrical power. 

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

(2) Remove the warning signs to tell persons: 

"DO NOT CONNECT THE ELECTRICAL POWER" 

"DO NOT CONNECT THE BATTERIES". 

H. Remove all tools, materials and equipment from the work area. Make sure that the area 

is clean. 
Service Bulletin Quality Reporting Form 

Fokker Services B.V. 

 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jul 17/14 

Security class: 

UNCLASSIFIED 

F27 Appendix SB no.: 

SBF27-28-072/APP01 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 10 of 10 

SB Title: The Introduction of Improved Bonding Provisions Outside the Fuel Tanks

Use this Service Bulletin Quality Reporting Form to tell us your perception of the quality of 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 of 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 highest score. 

Chapters * 1 2 3 4 

a) Quality rating of this SB (overall) □ □ □ □

b) Quality rating of the Planning Information □ □ □ □

c) Quality rating of the Material Information □ □ □ □

d) Quality rating of the Accomplishment Instructions □ □ □ □

e) Quality rating of the Test Instructions (if applicable) □ □ □ □

f) Quality rating of the Illustrations or Drawings (if applicable) □ □ □ □

g) Timely delivery of the SB □ □ □ □

If you have had difficulties with one of the chapters of this Service Bulletin and/or one of your rating(s) is 

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

Comments:

Operator: Date:

Name / Title: 

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

Technical Services, Quality Department 

P.O. Box 1357 

2130 EL Hoofddorp 

The Netherlands 

Fax: +31 (0) 88 6280111 or E-mail: technicalservices@fokker.com
 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V. to its customers on a confidential basis subject to the provisions of an agreement. 

Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

 

Status:

Released

Revision:

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Released date:

Jul 17/14

Security class:

UNCLASSIFIED

F27 Appendix SB no:

SBF27-28-072/APP01

Service Bulletin

Fokker Services B.V.

Page 1 of 1

List of Drawings / Parts Lists

Drawing Sheet Issue Title

W7202-500 001 B RF EL INSTL OUTERWING LH/RH