F28 Proforma SB 

SBF28-28-059 

Revision 1 

FUEL-GENERAL 

Service Bulletin 

Fokker Services B.V. 

Installation of Additional Bonding Provisions Outside the Fuel Tank 

Prepared 

scheidema-ps04192 

Colleague Check 

veen-iv01431 

Manager Final Approval 

groot-jg01801 

Office of Airworthiness Approval 

visser-hv01800 

Status: 

Released 

Security class: 

UNCLASSIFIED 

Function I Note 

FS-TFSE 

FS-TECI 

FS-TW 

I ~evision : 

I 

F28 Proforma SB no.: 

SBF28-28-059 

I Released date: (Mmm ddtyy) 

Jul15/14 

Date 

Jul11/14 

Ju111/14 

Jul14/14 

Jul15/14 

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 part1es of th1s 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 8 V 

EASA approved procedure for electronic sign-off 
Service Bulletin 

Fokker F28 

This Service Bulletin 

supersedes steps B. and J. 

of the accomplishment 

instructions of 

SBF28-28-026 

"This Service Bulletin is associated with the Fuel T~nk Safety Program" 

. Fuel System - l~troduction of improvea Bonding Provisions Outside the Fuel Tanks 

1. Planning Information 

A. 

B. 

C. 

Page 

Effectivity 

( 1) F28 aircraft serial numbers: 

11003 thru 11241 

11991 and 11992 

(2) Production version of this modification: Not applicable. 

Concurrent Requirements 

(1) Not applicable. 

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/POL/25/12, revealed that an unsafe 

condition may develop in the wing tanks because no controlled bonding provisions 

are present on a number of critical locations, outside 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. 

1 2 3 4 5 6 7 8 9 10 11 

Revision 1 1 1 1 1 1 1 1 1 1 1 

Jan 09/14 

Revision 1, Jul 15/14 

SBF28-28-059 

Proforma 

Page 1 

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 th is 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. 
Service Bulletin 

Fokker F28 

Reason for Revision : 

(1) This revision is made to: 

Change that this Service Bulletin supersedes steps B. and J. of the 

accomplishment instructions of SBF28-28-026. 

Add figure 3 to Part 2 of "Description" information for modification of aircraft with 

Center Wing Tank. 

Change the effectivity of Part 3 of "Description" information as modification 

depends on incorporation of SBF28-28-020; 

Change the "Weight and Balance" information; 

Change the "Maintenance Documentation" information; 

Add figure 3 for modification of aircraft with Center Wing Tank. 

D. Description 

(1) An Appendix to this Proforma Service Bulletin will tell you how to improve current 

bonding provisions and how to install extra bonding to fuel system Components 

outside the fuel Tanks to the : 

Part 1: Fuel Quantity Indication System. 

(if POST SBF28-57-098) 

- Fuel quantity Tank Unit (FQTU) no. 7 mounting flange. 

In figure 1 the position of FQTU number 7 is indicated, with an impression 

of the items to be bonded. 

- FQTU no. 7 attachment screws. 

In figure 1 the position of FQTU number 7 is indicated, with an impression 

of the items to be bonded. 

NOTE: For aircraft PRE SBF28-57-098, Part 1 of this Service Bulletin is 

included in SBF28-28-058. 

Part 2: Refueling line. 

(for a/c: - F28 Mk1 000: sin's 11003 thru 11061 and 11991 and 11992, 

if PRE SBF28-28-026, 

- F28 Mk2000, s/n 11053, if PRE SBF28-28-026) 

For an impression of the items to be bonded see figures 2 and 3. 

Part 3: Suction relief valve line. 

(for a/c: - 11016 thru 11061 , 11991 and 11992 if POST SBF28-28-020, 

- 11062 thru 11241 if equipped with Center Wing Bag Tanks) 

For an impression of the items to be bonded see figure 4. 

Part 4: Boost pump attachment screws. 

SBF28-28-059 

Proforma 

Page 2 

For an impression of the items to be bonded see figure 5. 

Jan 09/14 

Revision 1, Jul 15/14 

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. 
E. Compliance 

(1) Recommended. 

Service Bulletin 

Fokker F28 

Fokker Services recommends the accomplishment of this Service Bulletin within 

2 years (24 months) after the issue date of this Service bulletin. 

NOTE: It is expected that EASA will issue an Airworthiness Directive (AD) with 

respect to this subject with the same compliance terms. Refer to the EASA 

website for the publication of a Proposed Airworthiness Directive for 

comments. 

NOTE: In view of the required compliance, please be aware of the Appendix lead 

time of 3 months. 

F. Approval 

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

EASA.21J .059. 

G. Manpower 

(1) Approximately 5 man-hours are necessary to do Part 1 of this Service Bulletin. 

The elapsed time will be 2,5 hours for 2 men. 

(2) Approximately 5 man-hours are necessary to do Part 2 of this Service Bulletin. 

The elapsed time will be 5 hours for 1 man. 

(3) Approximately 3 man-hours are necessary to do Part 3 of this Service Bulletin. 

The elapsed time will be 3 hours for 1 man. 

(4) Approximately 3 man-hours are necessary to do Part 4 of this Service Bulletin. 

The elapsed time will be 3 hours for 1 man. 

All mentioned figures are rough estimates. More detailed manpower information will be 

included in an Appendix to this Proforma Service Bulletin. 

H. Weight and Balance 

(1) For Part 1 of this Service Bulletin: 

Weight change: None. 

Index change: None. 

(2) For Part 2 of this Service Bulletin: 

Weight change: + 0,55 kg (1 .21 lb) 

Index change: - 0.001 . 

(3) For Part 3 of this Service Bulletin: 

Jan 09/14 

Weight change: + 0,32 kg (0.71 lb). 

Index change: - 0.007. 

Revision 1, Jul 15/14 

SBF28-28-059 

Proforma 

Page 3 

Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services 8 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. 
(4) For Part 4 of this Service Bulletin: 

Weight change: None. 

Index change: None. 

I. Electrical Load Data 

(1) Not changed. 

J. Software Accomplishment Summary 

(1) Not applicable. 

K. References 

(1) Fokker Services SBF28-28-026, 

Fokker Services SBF28-28-058, 

Fokker Services SBF28-57 -098, 

Fokker internal reference(s): 

- ECR 15105. 

L. Publications Affected 

(1) This SB affects the publications listed below: 

(a) Maintenance Documentation 

- F28 Maintenance Manual (MM) 

- F28 Illustrated Parts Catalog (IPC) 

Service Bulletin 

Fokker F28 

NOTE: The Manual Change Notification - Maintenance Documentation will be 

attached to each Appendix to this Proforma Service Bulletin. 

(b) Maintenance Programs 

SBF28-28-059 

Proforma 

Page 4 

F28 Customized Maintenance Program (CMP). 

NOTE: The affected maintenance program change is described in the 

paragraph Special Instructions for Continued Airworthiness (ICA). 

Jan 09/14 

Revision 1, Jul 15/14 

Copyright AU rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker SeiVices 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 'Nith the prior written permission of Fokker Services B.V. 
(c) Special Instructions for Continued Airworthiness (ICA) 

Service Bulletin 

Fokker F28 

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

- Electrical Wiring Interconnection System (EWIS) 

- Fuel Tank Safety (FTS) 

YES 

X 

NO 

X 

NOTE: If "YES" the changed ICA will be described in an attachment to each 

Appendix of this Proforma Service Bulletin. 

(d) Operational Documentation 

Not affected. 

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

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

Bulletins in Documentation of Fokker Services"). 

M. Interchangeability or lntermixability of Parts 

(1) Not applicable. 

Jan 09/14 

Revision 1, Jul 15/14 

SBF28-28-059 

Proforma 

Page 5 

Copyright AU rights reserved by Fokker Services 8. V. (The Netherlands). This document has been supplied by Fokker Services BY 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. 
I 

2. Materiallnformation 

A. Material - Price and Availability 

Service Bulletin 

Fokker F28 

(1) On request we will supply you a customized modification proposal including prices 

and lead-times. The estimated lead time of an Appendix to this Proforma Service 

Bulletin and mod kit(s) is 3 months after we receive your order. 

(2) A customized modification proposal will include an approved Appendix (free of 

charge), mod kit(s) and revisions of the affected documentation (if applicable). 

(3) You can contact your Fokker Services Customer Support Manager for such a 

modification proposal. 

B. Material Required 

(1) Will be part of the Appendix and will comprise bonding leads, clamps and attaching 

materals. 

C. Tooling - Price and Availability 

( 1) Not Applicable. 

D. Drawings Required 

( 1) Will be part of the Appendix. 

3. Accomplishment Instructions 

A. Accomplishment Instructions will be included in each Appendix to this Proforma Service 

Bulletin. 

SBF28-28-059 

Proforma 

Page 6 

Jan 09/14 

Revision 1, Jul 15/14 

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. 
PROBE NUMBER 7 

BONDING IMPROVEMENT 

BETWEEN ATTACHMENT 

SCREWS AND 

PROBE MOUNTING FLANGE 

t_ ~ 

BONDING IMPROVEMENT 

BETWEEN PROBE 

MOUNTING FLANGE AND 

STRUCTURE 

Service Bulletin 

Fokker F28 

Figure 1 Bonding improvement of Fuel Quantity Indication System - probe no. 7. 

Jan 09/14 

Revision 1, Jul 15/14 

SBF28-28-059 

Proforma 

Page 7 

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 'Nith the prior written permission of Fokker Services B.V. 
Figure 2: 

SBF28-28-059 

Proforma 

Page 8 

ADDITIONAL OR IMPROVED 

BONDING AT INDICA TED 

LOCATIONS 

./ 

Service Bulletin 

Fokker F28 

Bonding improvement of refueling line (in MLG wheel bay) 

for aircraft not equipped with Center Wing Tank 

Jan 09/14 

Revision 1, Jul 15/14 

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 agreemenl is not permitted 

except with the prior written permission of Fokker Services B.V. 
Figure 3: 

Jan 09/14 

Service Bulletin 

Fokker F28 

ADDITIONAL OR IMPROVED 

BONDING AT INDICATED 

LOCAnONS 

Bonding improvement of refueling line (in MLG wheel bay) 

for aircraft equipped with Center Wing Tank 

Revision 1, Jul 15/14 

SBF28-28-059 

Proforma 

Page 9 

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. 
Figure 4: 

SBF28-28-059 

Proforma 

Page 10 

Service Bulletin 

Fokker F28 

BONDING IMPROVEMENT 

BETWEEN SUCTlON RELIEF VALVE LINE 

AND STRUCTURE 

Bonding improvement of the Suction Relief Valve Line. 

FRONT SPAR 

Jan 09/14 

Revision 1, Jul15/14 

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. 
VIEW A 

Service Bulletin 

Fokker F28 

BONDING IMPROVEMENT 

BETWEEN ATTACHMENT SCREWS 

AND BOOST PUMP ATTACHMENT 

FLANGE 

Figure 5: Bonding improvement of Boost pumps attachment screws. 

Jan 09/14 

Revision 1, Jul 15/14 

SBF28-28-059 

Proforma 

Page 11 

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.