## Service Bulletin Fokker 70/100

Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Revision - - - - - - - - - - - - - - - -

Attachments 3 Drawing sheets. For a detailed listing refer to page 10.

Aug 10/12 SBF100-28-068 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 this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. 1. Planning Information

A. Effectivity

(1) F28 Mark 0070/0100 aircraft serial numbers: 11244 thru 11585

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

B. Concurrent Requirements

(1) Before, or at the same time as, you do this SB, you must do: - SBF100-28-042 - FUEL – Tank Fueling / De-fueling - The introduction of a Fuse in the Level Control Pilot Valve Wiring.

C. Reason

(1) The design review of the F28 Mk 0070/0100 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.

(2) Under certain failure conditions of the wiring of the Overflow Valve Reed Switch or solenoid of the Level Control Pilot Valve (LCPV) or solenoid of the Re/De-fueling Shut-Off Valve or the Collector-Tank Level Float-Switch, a short circuit may develop that causes a hot spot on the wiring conduit or puncturing of the wall of the wiring conduit in the tank. This may result in an ignition source in the wing tank vapor space.

(3) Fuses, packed in a fuse assembly will limit the current and thus prevent this ignition source in the wing tank vapor space. FUEL

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

General - The Introduction of Fuses in the power supply and/or return wires for the Main Tank Overflow Valve reed-switches, the Level Control Pilot Valve solenoid, Re/De-fuel Shut-Off Valve solenoid and Collector-Tank Low Level Switch

## Service Bulletin Fokker 70/100

SBF100-28-068 Aug 10/12 Page 2

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. D. Description

(1) This Service Bulletin is divided into five parts as follows:

Part 1 Installation of fuses in the wiring of the LH and RH main tank Overflow Valve Reed Switch.

This Part tells you how to:

- Install fuses in the power supply and return wire of the LH and RH Overflow Valve Reed Switch.

Part 2 Installation of an additional fuse in the power return wire of the solenoid in the LH and RH main tank, Level Control Pilot Valve.

This Part tells you how to:

- Install an additional fuse in the power return wire of the solenoid of the Level Control Pilot Valves.

NOTE : The introduction of a fuse in the power supply wire of the solenoid in the LH and RH main tank, Level Control Pilot Valve is accomplished in accordance with SBF100-28-042 (ref par B, Concurrent Requirements).

Part 3 Installation of fuses in the power supply and return wires of the solenoid in the LH and RH main tank Re/De-fuel Shut-Off Valve.

This Part tells you how to:

- Install fuses in the power supply and return wire of the solenoid of the Re/De-fuel Shut-Off Valves.

Part 4 Installation of fuses in the power supply and return wires of the LH and RH Collector-Tank Low-Level Switch.

This Part tells you how to:

- Install fuses in the power supply and return wires of the CollectorTank Low-Level Switches.

Part 5 After-Installation Tests and Job Close Up

This Part tells you how to

- Do the After-Installation Tests.

NOTE : Incorporation of this Service Bulletin is only complete when all Parts that are applicable to the aircraft serial number mentioned in the individual Parts are incorporated.

## Service Bulletin Fokker 70/100

Aug 10/12 SBF100-28-068 Page 3

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 there in 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.

Fokker Services recommends the accomplishment of this Service Bulletin within 2 years 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.

F. Approval

(1) The technical content of this document is approved under the authority of DOA nr. EASA.21J.059.

G. Manpower

(1) Approximately 5 man-hours are necessary to do Part 1 on one aircraft.

This table of manpower will help you to schedule and do this Service Bulletin:

Instructions Men Man-hours Elapsed time (hours) Removal - 1,0 1,0 Modification Inspection 2 2,0 1,0
Installation 2 2,0 1,0 Testing - - - Total 5,0 3,0

(2) Approximately 5 man-hours are necessary to do Part 2 on one aircraft.

This table of manpower will help you to schedule and do this Service Bulletin:

Instructions Men Man-hours Elapsed time (hours) Removal - 1,0 1,0 Modification Inspection 2 2,0 1,0
Installation 2 2,0 1,0 Testing - - - Total 5,0 3,0

## Service Bulletin Fokker 70/100

SBF100-28-068 Aug 10/12 Page 4

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. (3) Approximately 5 man-hours are necessary to do Part 3 on one aircraft.

This table of manpower will help you to schedule and do this Service Bulletin:

Instructions Men Man-hours Elapsed time (hours) Removal - 1,0 1,0 Modification Inspection 2 2,0 1,0
Installation 2 2,0 1,0 Testing - - - Total 5,0 3,0

(4) Approximately 5 man-hours are necessary to do Part 4 on one aircraft.

This table of manpower will help you to schedule and do this Service Bulletin:

Instructions Men Man-hours Elapsed time (hours) Removal - 1,0 1,0 Modification Inspection 2 2,0 1,0
Installation 2 2,0 1,0 Testing - - - Total 5,0 3,0

(5) Approximately 4 man-hours are necessary to do Part 5 on one aircraft.

This table of manpower will help you to schedule and do this Service Bulletin:

Instructions Men Man-hours Elapsed time (hours) Removal - - - Modification Inspection - - - Installation - - - Testing 1 4,0 4,0 Total 4,0 4,0

NOTE : This estimate does not include the time necessary for the paint to dry and/or the sealant to cure.

(6) The estimated hours are for direct labor done by experienced personnel. They are calculated based on the conditions given in SBF100-00-001 (Service Bulletin Introduction, section 2.C., "Manpower").

## Service Bulletin Fokker 70/100

Aug 10/12 SBF100-28-068 Page 5

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. H. Weight and Balance

(1) Weight change: None Index change: None.

I. Electrical Load Data

(1) Not changed.

J. Software Accomplishment Summary

(1) Not applicable.

K. References

(1) Fokker 70/100 Aircraft Maintenance Manual (AMM) Fokker 70/100 Wiring Manual (WM) Fokker Consumable Material List (CML) Fokker Service Bulletin - SBF100-28-037 Fokker drawing(s): refer to page 8 Fokker internal reference(s): - ECR 15105.

## Service Bulletin Fokker 70/100

SBF100-28-068 Aug 10/12 Page 6

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. L. Publications Affected

(1) This SB affects the publications listed below:

(a) Maintenance Documentation

- Fokker 70/100 Aircraft Maintenance Manual (AMM) - chapter 28-11 28-21, 28-45 - Fokker 70/100 Wiring Manual (WM) - chapter 28-21, 28-45 - Fokker 70/100 Trouble Shooting Schematics Manual (TSSM).

NOTE : See attached Manual Change Notification MCNM F100-143.

(b) Maintenance Programs

Not affected.

(c) Special Instructions for Continued Airworthiness (ICA)

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

YES NO - Electrical Wiring Interconnection System (EWIS) - X - Fuel Tank Safety (FTS) X - - Damage Tolerance of Fatigue Critical Structure - X - Certification Maintenance Requirements (CMR) - X

NOTE : If “YES”, when not already incorporated, the changed ICA will be incorporated in the MRB, the Airworthiness Limitations Section (ALS) and/or the AMM document(s) within one calendar year from the date of issue of this Service Bulletin. Until then, the CDCCL items as specified below shall be followed.

## Service Bulletin Fokker 70/100

Aug 10/12 SBF100-28-068 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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. CDCCL : It shall be ensured that an over-current protection fuse assembly is properly installed in the power supply wire and in the return wire of the overflow valve reed switch, close to the point where the wiring enters the tank, and that the fuse assemblies are undamaged.

CDCCL : It shall be ensured that only a fuse assembly with a part number approved by the TCH under Fuel Tank Safety requirements for the specific application will be installed in the power supply wire and in the return wire of the overflow valve reed switch

. CDCCL: It shall be ensured that an over-current protection fuse assembly is properly installed in the power supply wire and in the return wire of the solenoid of the LCPV, close to the point where the wiring enters the tank, and that the fuse assemblies are undamaged.

CDCCL: It shall be ensured that only a fuse assembly with a part number approved by the TCH under Fuel Tank Safety requirements for the specific application will be installed in the power supply wire and in the return wire of the solenoid of the LCPV

. CDCCL : It shall be ensured that an over-current protection fuse assembly is properly installed in the power supply wire and in the return wire of the solenoid of the re/defueling shut-off valve, close to the point where the wiring enters the tank, and that the fuse assemblies are undamaged

. CDCCL : It shall be ensured that only a fuse assembly with a part number approved by the TCH under Fuel Tank Safety requirements for the specific application will be installed in the power supply wire and in the return wire of the solenoid of the re/defueling shut-off valve.

CDCCL : It shall be ensured that an over-current protection fuse assembly is properly installed in the power supply wire and in the return wire of the collector tank level float switch, close to the point where the wiring enters the conduit to the tank wall feed-through, and that the fuse assemblies are undamaged.

CDCCL : It shall be ensured that only a fuse assembly with a part number approved by the TCH under Fuel Tank Safety requirements for the specific application will be installed in the power supply wire and in the return wire of the collector tank level float switch

.

NOTE : (applicable to CDCCL) :
The verifications shall be performed in accordance with the instructions in the AMM, changed in accordance with the instructions in the attached MCNM F100-143.

## Service Bulletin Fokker 70/100

SBF100-28-068 Aug 10/12 Page 8

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. (d) Operational Documentation

Not affected.

(2) Report to Fokker Services that this SB has been carried out on the applicable aircraft. Send to Fokker Services the “Reporting Quality Form” of this SB, see last SB page.

NOTE : Completion of this form is not a formal part of accomplishment of the Service Bulletin itself and hence not a requirement.

(3) For incorporation of this Service Bulletin in your documentation refer to SBF100-00-001 (Service Bulletin Introduction, section 4 "Incorporation of Service Bulletins in Documentation of Fokker Services").

(4) Accomplishment of this SB is only complete with incorporation of the manual change(s), per the ref. MCNM/MCNO, Temporary Revision or General Revision

M. Interchangeability or Intermixability of Parts

(1) Not applicable.

## Service Bulletin Fokker 70/100

Aug 10/12 SBF100-28-068 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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. 2. Material Information

A. Material – Price and Availability

(1) You can order the necessary parts as mod kit SB10028068-XU-A.

(2) You can contact your Fokker Services Account Manager for the price and lead-time of this mod kit.

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

22 DR * Tape Lacing Fk05-090(A)** - Local source M81824-1-1 4 Splice FC 400 - Local source

NOTES : * Use as much as necessary ** Refer to the CML for material numbers.

(2) These mod kit parts are necessary to do this Service Bulletin on 1 aircraft.

New Part Number Qty Keyword Info Old Part Number Instructions/ Disposition

F0N1-3613-24-4 4 m* Sleeve, Identification - - -

M39029-56-351 14 Socket FC 356 - - W48006-401 6 Fuse, Jiffy Junction 1,0 Amp - -

W48006-403 8 Fuse, Jiffy Junction 0,25 Amp - -

W59520-403 1 Cableloom - - -

NOTES : * Use as much as necessary ** Refer to the CML for material numbers.

C. Tooling – Price and Availability

(1) Not applicable.

## Service Bulletin Fokker 70/100

SBF100-28-068 Aug 10/12 Page 10

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. D. Drawings Required

(1) These drawings are necessary to do this Service Bulletin:

Drawing Sheet Issue Size Description Aircraft Effectivity W41192 051 AS A3 RF Tank Fueling/Defueling All W41208 002 B A3 RF Collector Tank Wrn All W59520 002 E A4 Cableloom Connection List All

## Service Bulletin Fokker 70/100

Aug 10/12 SBF100-28-068 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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. 3. Accomplishment Instructions

General: - Remove and discard the cable ties where necessary. - Remove and discard the lacing tape where necessary.

- Use cable ties and lacing tape where necessary. - Loosen cable clamps where necessary. - Cut the new wires to the correct length where necessary. - Refer to the WM for: - The removal and installation of the wires, chapter 20-13-03, - The NC 4 codes, chapter 20-13-05, - The flag identifier codes, chapter 20-13-15, - Component Location, chapter 91-21-XX.

- For finish codes references, refer to “Myfokkerfleet.com/Documentation/FC”.

- For CML material number references, refer to “Myfokkerfleet.com/Documentation/CML”.

A. Remove the electrical power from the aircraft. Refer to AMM task 24-00-00-860-912A.

B. Put up warning signs to tell persons: “DO NOT CONNECT THE ELECTRICAL POWER” “DO NOT CONNECT THE BATTERIES”.

C. Open the following panels 536CB and 636CB.

Part 1 : Installation of fuses in the wiring of the LH and RH main tank Overflow Valve Reed Switch. NOTE : Refer to drawing W41192 sheet 051.

A. For aircraft post SBF100-28-037 do the following:

(1) Shorten the protection braid F0N1-3624-1 to 25 mm before the location of the Jiffy Junction Fuses.

(2) Shorten the protection braid F0N1-3624-2 to the location of the Jiffy Junction Fuses.

B. Rework the wiring of the LH Main Tank Overflow Valve.

(1) On the rear spar at the outboard flap-track on wing station 8200 get access to connector P 1698B.

(2) Install the new wires and the fuses. Install the fuses as close as possible to the tank wall with a yellow sleeve. Use: - 2 wires ref. Cableloom W59520-403 - 2 sockets pn M39029-56-351 (FC356) - 2 fuses (F 6704A, F 6769A) pn W48006-403 - AR tape, lacing pn Fk05-090(A) - AR sleeve, identification pn F0N1-3613-24-4.

(3) Identify the fuses in accordance with drawing W41192 sheet 051.

(a) Write the equipment number F 6704A on the identification sleeve of the power supply wire.

## Service Bulletin Fokker 70/100

SBF100-28-068 Aug 10/12 Page 12

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. (b) Write the equipment number F 6769A on the identification sleeve of the power return wire.

(4) Secure the new fuses and wiring. Use: - AR tape, lacing pn Fk05-090(A)

C. Rework the wiring of the RH Main Tank Overflow Valve.

(1) On the rear spar at the outboard flap-track on wing station 8200 get access to connector P 1706B.

(2) Install the new wires and the fuses. Install the fuses as close as possible to the tank wall with a yellow sleeve. Use: - 2 wires ref. Cableloom W59520-403 - 2 sockets pn M39029-56-351 (FC356) - 2 fuses (F 6703A, F 6768A) pn W48006-403 - AR tape, lacing pn Fk05-090(A) - AR sleeve, identification pn F0N1-3613-24-4.

(3) Identify the fuses in accordance with drawing W41192 sheet 051.

(a) Write the equipment number F 6703A on the identification sleeve of the power supply wire.

(b) Write the equipment number F 6768A on the identification sleeve of the power return wire.

(4) Secure the new fuses and wiring. Use: - AR tape, lacing pn Fk05-090(A)

## Service Bulletin Fokker 70/100

Aug 10/12 SBF100-28-068 Page 13

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. Part 2 : Installation of an additional fuse in the power return wires of the solenoid in the LH and RH main tank, Level Control Pilot Valve. Refer to drawing W41192 sheet 051



### .

NOTE : SBF100-28-042 introduced a fuse with an additional wire in the power supply wire of the solenoid in the LH and RH Level Control Pilot Valve. Aircraft on which SBF100-28-042 already is incorporated do not need to be modified for that wire. This Part 2 of Service Bulletin SBF100-28-068 (applicable to all aircraft, including those that are post SBF100-28-042) introduces an additional fuse and wire in the power return wire of the solenoid of the LH and RH Level Control Pilot Valve.

A. Rework the power return wire of the solenoid of the LH Level Control Pilot Valve.

(1) On the rear spar at the outboard flap-track on wing station 8200 get access to connector P 1698B.

(2) Install the new wire and the fuse. Install the fuse as close as possible to the tank wall with a yellow sleeve. Use: - 1 wire ref. Cableloom W59520-403 - 1 socket pn M39029-56-351 (FC356) - 1 fuse (F 6767A) pn W48006-401 - AR tape, lacing pn Fk05-090(A) - AR sleeve, identification pn F0N1-3613-24-4.

(3) Identify the fuse in accordance with drawing W41192 sheet 051.

(a) Write the equipment number F 6767A on the identification sleeve of the power return wire.

(4) Secure the new fuses and wiring. Use: - AR tape, lacing pn Fk05-090(A)

B. Rework the power return wire of the solenoid of the RH Level Control Pilot Valve.

(1) On the rear spar at the outboard flap-track on wing station 8200 get access to connector P 1706B.

(2) Install the new wire and the fuse. Install the fuse as close as possible to the tank wall with a yellow sleeve. Use: - 1 wire ref. Cableloom W59520-403 - 1 socket pn M39029-56-351 (FC356) - 1 fuse (F 6766A) pn W48006-401 - AR tape, lacing pn Fk05-090(A) - AR sleeve, identification pn F0N1-3613-24-4.

(3) Identify the fuse in accordance with drawing W41192 sheet 051.

(a) Write the equipment number F 6766A on the identification sleeve of the power return wire.

(4) Secure the new fuses and wiring. Use: - AR tape, lacing pn Fk05-090(A)

## Service Bulletin Fokker 70/100

SBF100-28-068 Aug 10/12 Page 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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. Part 3 : Installation of fuses in the power supply and return wires of the solenoid in the LH and RH main tank Re/De-fuel Shut-Off Valve. NOTE : Refer to drawings W41192 sheet 051



### . A. Rework the power supply and return wire of the solenoid of the LH Re/De-fuel Shut-Off Valve.

(1) On the bottom of the LH MLG Strut Bay get access to connector P 1697B.

(2) Install the new wires and the fuses. Install the fuses as close as possible to the tank wall with a yellow sleeve. Use: - 2 wires ref. Cableloom W59520-403 - 2 sockets pn M39029-56-351 (FC356) - 2 fuses (F 6772A, F 6773A) pn W48006-401 - AR tape, lacing pn Fk05-090(A) - AR sleeve, identification pn F0N1-3613-24-4.

(3) Identify the fuses in accordance with drawing W41192 sheet 051.

(a) Write the equipment number F 6772A on the identification sleeve of the power supply wire.

(b) Write the equipment number F 6773A on the identification sleeve of the power return wire.

(4) Secure the new fuses and wiring. Use: - AR tape, lacing pn Fk05-090(A)

B. Rework the power supply and return wire of the solenoid of the RH Re/De-fuel Shut-Off Valve.

(1) On the bottom of the RH MLG Strut Bay get access to connector P 1704B.

(2) Install the new wires and the fuses. Install the fuses as close as possible to the tank wall with a yellow sleeve at each end. Use: - 2 wires ref. Cableloom W59520-403 - 2 sockets pn M39029-56-351 (FC356) - 2 fuses (F 6770A, F 6771A) pn W48006-401 - AR tape, lacing pn Fk05-090(A) - AR sleeve, identification pn F0N1-3613-24-4.

(3) Identify the fuses in accordance with drawing W41192 sheet 051.

(a) Write the equipment number F 6770A on the identification sleeve of the power supply wire.

(b) Write the equipment number F 6771A on the identification sleeve of the power return wire.

(4) Secure the new fuses and wiring. Use: - AR tape, lacing pn Fk05-090(A)

## Service Bulletin Fokker 70/100

Aug 10/12 SBF100-28-068 Page 15

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. Part 4 : Installation of fuses in the power supply and return wires of the LH and RH Collector-Tank Low-Level Switch. NOTE : Refer to drawing W41208 sheet 002.

A. Rework the power supply and return wire of the LH Collector-Tank Low-Level Switch.

(1) On the bottom of the LH MLG Strut Bay get access to connector P 1697B.

(2) Install the new wires and the fuses. Install the fuses as close as possible to the tank wall with a yellow sleeve at each end. Use: - 2 wires ref. Cableloom W59520-403 - 2 sockets pn M39029-56-351 (FC356) - 2 fuses (F 6702A, F 6776A) pn W48006-403 - AR tape, lacing pn Fk05-090(A) - AR sleeve, identification pn F0N1-3613-24-4.

(3) Identify the fuses in accordance with drawing W41208 sheet 002.

(a) Write the equipment number F 6702A on the identification sleeve of the power supply wire.

(b) Write the equipment number F 6776A on the identification sleeve of the power return wire.

(4) Secure the new fuses and wiring. Use: - AR tape, lacing pn Fk05-090(A)

B. Rework the power supply and return wire of the RH Collector-Tank Low-Level Switch.

(1) On the bottom of the RH MLG Strut Bay get access to connector P 1704B.

(2) Install the new wires and the fuses. Install the fuses as close as possible to the tank wall with a yellow sleeve at each end. Use: - 2 wires ref. Cableloom W59520-403 - 2 sockets pn M39029-56-351 (FC356) - 2 fuses (F 6701A, F 6777A) pn W48006-403 - AR tape, lacing pn Fk05-090(A) - AR sleeve, identification pn F0N1-3613-24-4.

(3) Identify the fuses in accordance with drawing W41208 sheet 002.

(a) Write the equipment number F 6701A on the identification sleeve of the power supply wire.

(b) Write the equipment number F 6777A on the identification sleeve of the power return wire.

(4) Secure the new fuses and wiring. Use: - AR tape, lacing pn Fk05-090(A)

## Service Bulletin Fokker 70/100

SBF100-28-068 Aug 10/12 Page 16

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 there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V. Part 5 : The After-Installation Tests and Job Close Up

A. Secure the modified wiring in accordance with the instructions for cable loom in AMM task 20-13-03-910-812A. Use: - AR tape, lacing pn Fk05-090(A)

B. Restore electrical power.

(1) Remove the warning signs to tell persons: "DO NOT CONNECT THE ELECTRICAL POWER" "DO NOT CONNECT THE BATTERIES".

(2) Supply the electrical power. Refer to AMM task 24-00-00-860-832A.

C. Do these after-installation tasks

(1) Task 28-21-03-400-814-A (CDCCL) Install the Level Control Pilot Valve (only the after installation test).

(2) Task 28-21-04-400-814-A (CDCCL) Install the Fueling Shut-Off Valve (only the after installation test).

(3) Task 28-21-07-400-814-A (CDCCL) Install the Main Tank Overflow Valve (only the after installation test).

(4) Task 28-45-00-710-815-A (FUEL ALI) Operational Check - Collector-Tank Low Level Warning System.

D. Remove the tools, materials and equipment from the work area. Make sure that the work area is clean

E. Close the panels 536CB and 636CB.

## Service Bulletin Reporting Quality Form Fokker 70/100

Aug 10/12 SBF100-28-068 Page 17

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 there in 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 Reporting Quality Form

Use this Service Bulletin Reporting Quality 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 improv e 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 Email : technicalservices@fokker.comFOKKER SERVICES B.V. ENGINEERING DEPARTMENT

CABLELOOM CONNECTIONLIST

PART NUMBER PART NAME E Q UIVALENT DWG NR : W59520 EL. CABLE DASH NR : -403

ISSUE : E

SHEET : 2

DATE : 18-03-2011

FROM CABLE LENGTH TO WD DRAWING E Q UIPNR CNT FC NUMBER SEP TYP GG m m E Q UIPNR CNT FC NUMBER REFERENCE

A XF0049 C2 NK 20 250 W41208 W59520-403E R A XF0063 C2 NK 20 250 W41208 W59520-403E A WF0049 C1 NK 20 250 W41208 W59520-403E R A WF0057 C1 NK 20 250 W41208 W59520-403E

A XF0051 B2 NK 20 250 W41192 W59520-403E

A WF0051 B2 NK 20 250 W41192 W59520-403E

A XF0053 B2 NK 20 250 W41192 W59520-403E A XF0054 B2 NK 20 250 W41192 W59520-403E A XF0055 B2 NK 20 250 W41192 W59520-403E A XF0056 B2 NK 20 250 W41192 W59520-403E

A WF0053 B2 NK 20 250 W41192 W59520-403E A WF0054 B2 NK 20 250 W41192 W59520-403E A WF0055 B2 NK 20 250 W41192 W59520-403E AWF0056 B2 NK 20 250 W41192 W59520 403E QTY A.R. F0N9-1780NK20

AWF0056 B2 NK 20 250 W41192 W59520

- 403E

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 1 of 11 

### MCNM-F100-143

Subject : Fuel – Introduction of Fuses in the Wiring to Collector-Tank Float-Switch, theLevel-Control Pilot Valve, the Main-Tank Fueling Shut-off Valves and the MainTank Overflow-Valve.

Reason : This MCN is issued to provide you with the changes on the content(s) of the affected manual(s), due to the introduction of SBF100-28-068.

Effectivity : Refer to SBF100-28-068.

Compliance : Once you have determined the applicability of this MCN for one or more of your aircraft, incorporate this information into the applicable manual(s).

Publications Affected : The Aircraft Maintenance Manual (AMM) The Wiring Manual (WM) The Trouble Shooting Schematics Manual (TSSM).

Change Note : AMM

Before you start with the Change Notes gi ven in this MCNM, do a check if your manual contains Task 28-11-00-200-876-A. If not, then incorporate a new Task 28- 11-00-200-876-A as instructed, to make sure that your manual contains this basic Task before incorporation of the additional Change Notes for this Task given in this MCNM and/or MCNM-F100-146. If applicable, incorporate the new Task, as follows:

− Use this title for the new Task

(CDCCL) Detailed Inspection of the Drain-Holes, Drain-Paths in the Dry Bay Zones

− Add this note below the title of the new task:

NOTE: This maintenance procedure affects Fuel Tank Safety. The procedure is related to a fuel system CDCCL (Critical Design Configuration Control Limitation Item). Strictly adhere to the contents of the CDCCL affected sections, to ensure that unsafe conditions do not develop.

− At the end of the Task, add a new Fig. 28-11-00-990-076-A00 as shown on Figure 1 of this MCNM.

− Use this procedure for the new Task:

Subtask 28-11-00-210-146-A00 (Refer to Fig. 28-11-00-990-076-A00)

NOTE: You must only do this inspection in the area of the wing dry bay, to which you have access.

NOTE: Start of Fuel System CDCCL affected section.

Examine the area, as follows: (1) Make sure that the dry bay is clean.

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 2 of 11 (2) Make sure that the drain-holes are clear and free of obstructions on the outside. (3) Make sure that the drain-holes and the drain-paths to the drain-holes are clean and free of obstructions. (4) Clean the drain-holes and drain-paths, as necessary.

NOTE: End of Fuel System CDCCL affected section.

If your manual contains Task 28-00-01-910-812-A, then add the access doors 722 and 732 to Fig. 28-00-01-992-012-A00/A01 (as applicable), with a reference to Task 28-11-00-200-876.

Update Task 28-11-00-200-876-A, as follows:

− If you have incorporated the basic Task as a result of this MCNM, or theexisting Task in your manual does not contain the text “Fuel-System ElectricalBonding”, then change the title of this Task, as follows:

(CDCCL) Inspection of the Drain-Holes, Drain-Paths and Fuses in the Dry Bay Zones

− If the title of the Task contains the text “Fuel-System Electrical-Bonding”, then update the title of this Task, as follows:

(CDCCL) Inspection of the Drain-Holes, Drain-Paths, Fuel-System Electrical-Bonding and Fuses in the Dry Bay Zones

− After Subtask 28-11-00-210-146-A00, add the following two new Subtasks:

Subtask 28-11-00-210-156-A00

NOTE: You must do this inspection before you close the access door(s) 536CB/636CB.

Do a check of the four fuse assemblies

For the LH Installation:

NOTE: Start of Fuel System CDCCL affected section.

NOTE: The installation of each fuse assembly (at wing STA 8200) in Zone 536, is identified with a yellow sleeve at each end.

(1) In the electrical-cable that connects to the electrical-connector P1698B, find the fuse assemblies F6233A, F6704A, F6767A and F6769A (Refer to WM 28-21-13 for more data). (2) Make sure that each fuse assembly is in good condition and not damaged. (3) If the inspection is not satisfactory, then do these steps: (a) This part is subject to a CDCCL. Make sure that the partnumber of the fuse assembly that you must install, is a CDCCL-approved partnumber (Refer to WM Part 1, Equipment List for the approved partnumber(s)). (b) Replace the fuse assembly/assemblies.

NOTE: End of Fuel System CDCCL affected section.

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 3 of 11 For the RH Installation:

NOTE: Start of Fuel System CDCCL affected section.

NOTE: The installation of each fuse assembly (at wing STA 8200) in Zone 636, is identified with a yellow sleeve at each end.

(1) In the electrical-cable that connects to the electrical-connector P1706B, find the fuse assemblies F6232A, F6703A, F6766A and F6768A (Refer to WM 28-21-13 for more data). (2) Make sure that each fuse assembly is in good condition and not damaged. (3) If the inspection is not satisfactory, then do these steps: (a) This part is subject to a CDCCL. Make sure that the partnumber of the fuse assembly that you must install, is a CDCCL-approved partnumber (Refer to WM Part 1, Equipment List for the approved partnumber(s)). (b) Replace the fuse assembly/assemblies.

NOTE: End of Fuel System CDCCL affected section.

Subtask 28-11-00-210-166-A00

NOTE: You must do this inspection before you close the access door(s) 722/732.

Do a check of the four fuse assemblies

For the LH Installation:

NOTE: Start of Fuel System CDCCL affected section.

NOTE: The installation of each fuse assembly (at wing STA 2230) in Zone 531, is identified with a yellow sleeve at each end.

(1) In the electrical-cable that connects to the electrical-connector P1697B, find the fuse assemblies:

- F6772A and F6773A (Refer to WM 28-21-13 for more data)

- F6702A and F6776A (Refer to WM 28-45-00 for more data). (2) Make sure that each fuse assembly is in good condition and not damaged. (3) If the inspection is not satisfactory, then do these steps: (a) This part is subject to a CDCCL. Make sure that the partnumber of the fuse assembly that you must install, is a CDCCL-approved partnumber (Refer to WM Part 1, Equipment List for the approved partnumber(s)). (b) Replace the fuse assembly/assemblies.

NOTE: End of Fuel System CDCCL affected section.

For the RH Installation:

NOTE: Start of Fuel System CDCCL affected section.

NOTE: The installation of each fuse assembly (at wing STA 2230) in Zone 631, is identified with a yellow sleeve at each end.

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 4 of 11 (1) In the electrical-cable that connects to the electrical-connector P1704B, find the fuse assemblies:

- F6770A and F6771A (Refer to WM 28-21-13 for more data)

- F6701A and F6777A (Refer to WM 28-45-00 for more data). (2) Make sure that each fuse assembly is in good condition and not damaged. (3) If the inspection is not satisfactory, then do these steps: (a) This part is subject to a CDCCL. Make sure that the partnumber of the fuse assembly that you must install, is a CDCCL-approved partnumber (Refer to WM Part 1, Equipment List for the approved partnumber(s)). (b) Replace the fuse assembly/assemblies.

NOTE: End of Fuel System CDCCL affected section.

Update Task 28-11-02-000-814, as follows:

− Make sure that the Task is in accordance with the change notes given in MCNM-F100-125

− In Subtask 28-11-02-020-014-A02/A04, replace the steps (1)(b)3a thru h in the removal procedure for the LH group B access panels, by the following text, and re-identify the subsequent steps accordingly:

a On the rear-spar at wing STA 8200, get access to the wiring connected to the electricalconnector P1698B. b Cut the wire (5) of the overflow valve (1), at the splice that connects to the electrical-wire AWF0001-B2 (Refer to WM 28-21-13 for more data).

c Cut the wire (5) of the overflow valve (1), at the splice that connects to the electrical-wire AWF0002-B2 (Refer to WM 28-21-13 for more data). d Use tags, to identify the wires which are disconnected.

e Remove and discard the lacing-tape and the silicone-rubber tape, which attach the braided protection-hose (p/n FON1-3624-1) to the end of the wires (5) of the overflow valve (1).

− In Subtask 28-11-02-020-014-A02/A04, replace the steps (1)(b)3a and h in the removal procedure for the RH group B access panels, by the following text, and re-identify the subsequent steps accordingly:

a On the rear-spar at wing STA 8200, get access to the wiring connected to the electricalconnector P1706B. b Cut the wire (5) of the overflow valve (1), at the splice that connects to the electrical-wire AXF0003-B2 (Refer to WM 28-21-13 for more data).

c Cut the wire (5) of the overflow valve (1), at the splice that connects to the electrical-wire AXF0004-B2 (Refer to WM 28-21-13 for more data). d Use tags, to identify the wires which are disconnected.

e Remove and discard the lacing-tape and the silicone-rubber tape, which attach the braided protection-hose (p/n FON1-3624-1) to the end of the wires (5) of the overflow valve (1).

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 5 of 11 Update Task 28-11-02-400-814, as follows:

− Make sure that the Task is in accordance with the change notes given in MCNM-F100-125

− In Subtask 28-11-02-420-014-A02, replace the steps (2)(e)3 thru 6 in the installation procedure for the LH group B access panels, by the following text:

3 Use the silicone-rubber tape (Fk05-008) and the lacing tape (Fk05-090), to attach the braided protection-hose to the wires (5) (Refer to WM 20-13-03 for more data). 4 Connect the wires (5) of the overflow-valve (1) to the aircraft, with new splices (Refer to WM 28-21-13 for more data).

NOTE: For installation of electrical-wire splices, refer to the standard practices in WM 20-13-18.

5 Remove the tags, which were installed during the removal procedure. 6 Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data). 7 Close the access door 536CB.

− In Subtask 28-11-02-420-014-A04, replace the steps (2)(j)3 thru 6 in the installation procedure for the LH group B access panels, by the following text:

3 Use the silicone-rubber tape (Fk05-008) and the lacing tape (Fk05-090), to attach the braided protection-hose to the wires (5) (Refer to WM 20-13-03 for more data). 4 Connect the wires (5) of the overflow-valve (1) to the aircraft, with new splices (Refer to WM 28-21-13 for more data).

NOTE: For installation of electrical-wire splices, refer to the standard practices in WM 20-13-18.

5 Remove the tags, which were installed during the removal procedure. 6 Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data). 7 Close the access door 536CB.

− In Subtask 28-11-02-420-014-A02, replace the steps (2)(e)3 thru 6 in the installation procedure for the RH group B access panels by the following text:

3 Use the silicone-rubber tape (Fk05-008) and the lacing tape (Fk05-090), to attach the braided protection-hose to the wires (5) (Refer to WM 20-13-03 for more data). 4 Connect the wires (5) of the overflow-valve (1) to the aircraft, with new splices (Refer to WM 28-21-13 for more data).

NOTE: For installation of electrical-wire splices, refer to the standard practices in WM 20-13-18.

5 Remove the tags, which were installed during the removal procedure. 6 Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data). 7 Close the access door 636CB.

− In Subtask 28-11-02-420-014-A04, replace the steps (2)(j)3 thru 6 in the installation procedure for the RH group B access panels by the following text:

3 Use the silicone-rubber tape (Fk05-008) and the lacing tape (Fk05-090), to attach the braided protection-hose to the wires (5) (Refer to WM 20-13-03 for more data).

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 6 of 11 4 Connect the wires (5) of the overflow-valve (1) to the aircraft, with new splices (Refer to WM 28-21-13 for more data).

NOTE: For installation of electrical-wire splices, refer to the standard practices in WM 20-13-18.

5 Remove the tags, which were installed during the removal procedure. 6 Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data). 7 Close the access door 636CB.

Update Task 28-21-00-ZZ2-810-A/B (as applicable), as follows:

− Make sure that the Task is in accordance with the change notes given in the latest revision of MCNM-F100-129

− Change the paragraph given for the Fuse Assembly, as follows:

Fuse Assemblies in the Electrical-Wiring to the Main-Tank (1) The fuses prevent that a short-circuit in the electrical-installation of the fueling/defueling system valves can result in an ignition-source in the fuel tank. (2) At the wing rear-spar (wing STA 8200) in Zone 536/636, there are:

− Two fuse assemblies installed in the electrical-wiring to the level-control pilotvalve

− Two fuse assemblies installed in the electrical-wiring to the main-tank overflowvalve. (3) At the wing rear-spar (wing STA 2230) in Zone 531/631, there are two fuse assemblies installed in the electrical-wiring to the main-tank fueling shut-off valve.

− Add the new fuse assemblies to the Component Location Index.

Update Task 28-21-03-000-814, as follows:

− Make sure that the Task is in accordance with the change notes given in the latest revision of MCNM-F100-129

− If the change notes of MCNM-F100-129 are incorporated into Subtask 28-21- 03-020-014-A01 , then re-identify this Subtask as 28-21-03-020-014-A02

− In Subtask 28-21-03-020-014-A02, delete the steps (a) and (b) from step (2) of the removal procedures for the LH and RH level-control pilot-valves.

Update Task 28-21-03-400-814, as follows:

− Make sure that the Task is in accordance with the change notes given in the latest revision of MCNM-F100-129

− If the change notes of MCNM-F100-129 are incorporated into Subtask 28-21- 03-420-014-A01, then re-identify this Subtask as 28-21-03-420-014-A02

− In Subtask 28-21-03-420-014-A02, replace the steps (13) thru (15) of the installation procedure for the LH level-control pilot-valve, by the following text:

(13) Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data). (14) Close the access door 536CB.

− In Subtask 28-21-03-420-014-A02, replace the steps (13) thru (15) of the installation procedure for the RH level-control pilot-valve, by the following text:

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 7 of 11 (13) Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data). (14) Close the access door 636CB.

Update Task 28-21-04-000-814, as follows:

− In Subtask 28-21-04-020-014-A01, change the steps (1) thru (3) of the removal procedure for the LH fueling shut-off valve, as follows:
(1) In the LH MLG strut-bay, get access to the connector P1697B which is installed below the installation of the fuel fire shut-off valve at wing STA 2230. (2) Disconnect the electrical-wires (3) of the fueling shut-off valve (7) (a) Cut the electrical-wire (3) at the splice that connects to the electrical-wire AWF0043-B2 (Refer to WM 28-21-13 for more data). (b) Cut the electrical-wire (3) at the splice that connects to the electrical-wire AWF0044-B2 (Refer to WM 28-21-13 for more data). (3) Use tags, to identify the disconnected wires.

− In Subtask 28-21-04-020-014-A01, change the steps (1) thru (3) in the removal procedure for the RH fueling shut-off valve, as follows:
(1) In the RH MLG strut-bay, get access to the connector P1704B which is installed below the installation of the fuel fire shut-off valve at wing STA 2230. (2) Disconnect the electrical-wires (3) of the fueling shut-off valve (7) (a) Cut the electrical-wire (3) at the splice that connects to the electrical-wire AXF0043-B2 (Refer to WM 28-21-13 for more data). (b) Cut the electrical-wire (3) at the splice that connects to the electrical-wire AXF0044-B2 (Refer to WM 28-21-13 for more data). (3) Use tags, to identify the disconnected wires.

Update Task 28-21-04-400-814, as follows:

− In Subtask 28-21-04-965-014-A00, delete the steps (8) and (9), including the two Notes which identify the CDCCL affected section

− In Subtask 28-21-04-420-014-A01, replace the steps (17) thru (19) of the installation procedure for the LH fueling shut-off valve, by the following text:

(17) Connect the electrical-wires (3) of the fueling shut-off valve (7) to the aircraft wires, with new splices (Refer to WM 28-21-13 for more data).

NOTE: For installation of electrical-wire splices, refer to the standard practices in WM 20- 13-18.
(18) Remove the tags, which were installed during the removal procedure. (19) Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data).

− In Subtask 28-21-04-420-014-A01, replace the steps (18) thru (20) of the installation procedure for the RH fueling shut-off valve, by the following text:

(18) Connect the electrical-wires (3) of the fueling shut-off valve (7) to the aircraft wires, with new splices (Refer to WM 28-21-13 for more data).

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 8 of 11 NOTE: For installation of electrical-wire splices, refer to the standard practices in WM 20- 13-18.
(19) Remove the tags, which were installed during the removal procedure. (20) Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data).

Update Task 28-45-00-ZZ2-810-A, as follows:

− Add a new paragraph that contains this text:

Fuse Assemblies

(1) The fuses prevent that a short-circuit in the electrical-installation of a level float-switch can result in an ignition-source in the fuel tank. (2) At the wing rear-spar (wing STA 2230) in Zone 531/631, there are two fuse assemblies installed in the electrical-wiring of the level float-switch.

− Add the new fuse assemblies to the Component Location Index.

Update Task 28-45-01-000-814, as follows:

− In Subtask 28-45-01-020-014-A01, change the steps (1) thru (3) of the removal procedure for the LH level float switch, as follows:
(1) In the LH MLG strut-bay, get access to the connector P1697B which is installed below the installation of the fuel fire shut-off valve at wing STA 2230. (2) Disconnect the electrical-wires (4) of the float switch (2) (a) Cut the electrical-wire (4) at the splice that connects to the electrical-wire AWF0045-C1 (Refer to WM 28-45-00 for more data). (b) Cut the electrical-wire (4) at the splice that connects to the electrical-wire AWF0046-C1 (Refer to WM 28-45-00 for more data). (3) Use tags, to identify the disconnected wires.

− In Subtask 28-45-01-020-014-A01, change the steps (1) thru (3) in the removal procedure for the RH level float switch, as follows:
(1) In the RH MLG strut-bay, get access to the connector P1704B which is installed below the installation of the fuel fire shut-off valve at wing STA 2230. (2) Disconnect the electrical-wires (4) of the float switch (2) (a) Cut the electrical-wire (4) at the splice that connects to the electrical-wire AXF0045-C2 (Refer to WM 28-45-00 for more data). (b) Cut the electrical-wire (4) at the splice that connects to the electrical-wire AXF0046-C2 (Refer to WM 28-45-00 for more data). (3) Use tags, to identify the disconnected wires.

Update Task 28-45-01-400-814, as follows:

− In Subtask 28-45-01-210-014-A01, delete the two Notes which identify the CDCCL affected section in the procedure

− In Subtask 28-45-01-430-014-A00, delete the two Notes which identify the CDCCL affected section in the procedure

− In Subtask 28-45-01-420-014-A01, replace the steps (12) thru (15) of the installation procedures for the LH and RH level float switches, by the following text:

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 9 of 11 (12) Use the silicone-rubber tape (Fk05-008) and the lacing tape (Fk05-090), to attach the braided protection-hose to the electrical-wires (4) (Refer to WM 20-13-03 for more data). (13) Connect the electrical-wires (4) of the float switch (2) to the aircraft wires, with new splices (Refer to WM 28-45-00 for more data).

NOTE: For installation of electrical-wire splices, refer to the standard practices in WM 20- 13-18.
(14) Remove the tags, which were installed during the removal procedure. (15) Do the dry bay zone inspection in the work-area (Refer to 28-11-00-200-876 for more data).

Update Task 52-82-01-410-812, as follows:

− Add a new Subtask after Subtask 52-82-01-940-022-A00, that contains this text:
Do the dry bay zone inspection in Zone 531/631 (Refer to 28-11-00-200-876 for more data).

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 10 of 11 WM/TSSM

− Update Chapter 28-21 and 28-45, in accordance with the drawings as given in SBF100-28-068, paragraph 2.D.(1).

− Update the Equipment list (F) in Part 1 of the Wiring Manual, in accordance with Table 1 of this MCNM.

Equipment Part number Description F 6701A W48006-403 Fuse, Assy (CDCCL) F 6702A W48006-403 Fuse, Assy (CDCCL) F 6703A W48006-403 Fuse, Assy (CDCCL) F 6704A W48006-403 Fuse, Assy (CDCCL) F 6766A W48006-401 Fuse, Assy (CDCCL) F 6767A W48006-401 Fuse, Assy (CDCCL) F 6768A W48006-403 Fuse, Assy (CDCCL) F 6769A W48006-403 Fuse, Assy (CDCCL) F 6770A W48006-401 Fuse, Assy (CDCCL) F 6771A W48006-401 Fuse, Assy (CDCCL) F 6772A W48006-401 Fuse, Assy (CDCCL) F 6773A W48006-401 Fuse, Assy (CDCCL) F 6776A W48006-403 Fuse, Assy (CDCCL) F 6777A W48006-403 Fuse, Assy (CDCCL) Table 1. Equipment list (F)

NOTE: If you have a Documentation Revision Service (DRS) with Fokker Services, this information will be included into your manuals at the earliest opportunity.

## Manual Change Notification – Maintenance Documentation Fokker 70/100

AUG 10/12 MCNM F100-143 Page 11 of 11 Drain Holes in the Dry Bay Zones Figure 1