## F28 Proforma SB SBF28-28-059 Revision 1 FUEL-GENERAL 

## Service Bulletin Fokker Services B.V.

Installation ofAdditional Bonding Provisions Outside the Fuel Tank

Prepared

scheidema-ps04192 Colleague Check

veen-iv01431 Manager Final Approval

groot-jg01801 Office ofAirworthiness 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 

# IReleased 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 ofthe 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 th ird 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 perm ission 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 custom ers on a confidential basis subject to the provisions of an agreement. Reproduction or disclosure to third parties of this document or any part the reof, 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 ofthis Service Bulletin . The elapsed time will be 2,5 hours for 2 men. (2) Approximately 5 man-hours are necessary to do Part 2 ofthis 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 ofth is Service Bulletin : Weight change : + 0,55 kg (1 .21 lb) Index change : - 0.001 . (3) For Part 3 ofthis 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 ofthis 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). Th is 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 Bond ing 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 perm ission of Fokker Services B.V.

### Figure 2:

SBF28-28-059 Proforma Page 8 ADDITIONAL OR IMPROVED BONDING AT INDICATED 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) . Th is 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.