# Boeing Alert Service Bulletin 747-28A2306: No revision named

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- Document: [Boeing Alert Service Bulletin 747-28A2306](https://openairdocs.org/service-documents/boeing/747-28a2306.md)
- Title as filed: U.S. DOT/FAA - SB-747-28A2306-00
- Pages: 261
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## Text

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### Page 1

Commercial 
Airplanes
747
Service Bulletin
ALERT
Number: 747-28A2306
Original Issue: October 02, 2014
ATA System: 2822
SUBJECT: FUEL - Engine Fuel Feed System - Fuel Boost Pump Wiring Change
Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15
CFR 300-774). An export license may be required before it is used for development, production or use by foreign
persons from specific countries. The controller of this data has the individual responsibility to abide by all export
laws.
9E991ECCN:
BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET
Copyright © 2014 Boeing.
Unpublished Work. All Rights Reserved.
Treatment of this document and its content is governed by contract with Boeing. Rights to use this document
are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The
Boeing Company.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner™,
BBJ, DC-8, DC-9, DC-10, KC-10, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and Boeing
liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection
with this document unless provided in writing by Boeing. BOEING is a trademark of Boeing Management
Company.
Original Issue: October 02, 2014
747-28A2306
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### Page 3

Table of Contents
Summary ...................................................... 5
1. PLANNING INFORMATION ........................................ 9
A. Effectivity ................................................ 9
1. Airplanes ............................................. 9
2. Spares Affected ........................................ 1 9
B. Concurrent Requirements ...................................... 1 9
C. Reason ................................................ 1 9
D. Description .............................................. 1 9
E. Compliance .............................................. 2 0
F. Approval ............................................... 2 1
G. Manpower .............................................. 2 1
H. Weight and Balance Changes .................................... 2 3
I. Electrical Load Data ......................................... 2 4
J. References .............................................. 2 4
1. Existing Data: ......................................... 2 4
2. Data Supplied with this Service Bulletin: ........................... 2 4
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 5
4. Process Data: ......................................... 2 5
K. Publications Affected ........................................ 2 5
L. Interchangeability and Intermixability of Parts ........................... 2 5
M. Software Accomplishment Summary ................................ 2 5
2. MATERIAL INFORMATION ........................................ 2 7
A. Material - Price and Availability ................................... 2 7
B. Industry Support Information .................................... 2 9
C. Parts Necessary for Each Airplane ................................. 3 0
1. Kits/Parts: ........................................... 3 0
2. Parts and Materials Supplied by the Operator: ........................ 4 7
3. Parts Modified and Reidentified: ............................... 4 7
4. Parts Removed and Not Replaced: .............................. 4 7
D. Parts Necessary to Change Spares ................................. 4 7
E. Special Tooling - Price and Availability ............................... 4 7
F. Special Tooling Necessary to do this Service Bulletin ....................... 4 7
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 4 9
A. GENERAL INFORMATION ..................................... 4 9
B. WORK INSTRUCTIONS ....................................... 5 0
FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
[Group 1] ............................................ 5 3
FIGURE 2: MAIN FWD BOOST PUMP NO. 1 WIRING CHANGE W4520 - LEFT WING [Group 1] . . 65
FIGURE 3: MAIN AFT BOOST PUMP NO. 1 WIRING CHANGE W4519 - LEFT WING [Group 1] . . . 67
FIGURE 4: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4550 AND W4549 - RIGHT WING
[Group 1] ............................................ 6 9
FIGURE 5: MAIN FWD BOOST PUMP NO. 4 WIRING CHANGE W4550 - RIGHT WING [Group 1] . 82
FIGURE 6: MAIN AFT BOOST PUMP NO. 4WIRING CHANGE W4549 - RIGHT WING [Group 1] . . 84
FIGURE 7: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W602, W1214 AND W1210 - LEFT
WING [Group 2] ........................................ 8 6
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FIGURE 8: MAIN FWD BOOST PUMP NO. 1 WIRING CHANGE W602 AND W1214 - LEFT WING [Group
2 ]  ................................................ 1 0 0
FIGURE 9: MAIN AFT BOOST PUMP NO. 1 WIRING CHANGE W1210 - LEFT WING [Group 2] . . 102
FIGURE 10: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W1216 AND W1212 - RIGHT WING
[Group 2] ............................................ 1 0 4
FIGURE 11: MAIN FWD BOOST PUMP NO. 4 WIRING CHANGE W1216 - RIGHT WING [Group 2] . 117
FIGURE 12: MAIN AFT BOOST PUMP NO. 4 WIRING CHANGE W1212 - RIGHT WING [Group 2] . 119
FIGURE 13: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W602, W1214 AND W1210 - LEFT
WING [Group 3] ........................................ 1 2 1
FIGURE 14: MAIN FWD BOOST PUMP NO. 1 WIRING CHANGE W602 AND W1214 - LEFT WING [Group
3 ]  ................................................ 1 3 5
FIGURE 15: MAIN AFT BOOST PUMP NO. 1 WIRING CHANGE W1210 - LEFT WING [Group 3] . . 137
FIGURE 16: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W1216 AND W1212 - RIGHT WING
[Group 3] ............................................ 1 3 9
FIGURE 17: MAIN FWD BOOST PUMP NO. 4 WIRING CHANGE W1216 - RIGHT WING [Group 3] . 152
FIGURE 18: MAIN AFT BOOST PUMP NO. 4 WIRING CHANGE W1212 - RIGHT WING [Group 3] . 154
FIGURE 19: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W1214 AND W1210 - LEFT WING
[Group 4] ............................................ 1 5 6
FIGURE 20: MAIN FWD BOOST PUMP NO. 1 WIRING CHANGE W1214 - LEFT WING [Group 4] . . 169
FIGURE 21: MAIN AFT BOOST PUMP NO. 1 WIRING CHANGE W1210 - LEFT WING [Group 4] . . 171
FIGURE 22: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W1216 AND W1212 - RIGHT WING
[Group 4] ............................................ 1 7 3
FIGURE 23: MAIN FWD BOOST PUMP NO. 4 WIRING CHANGE W1216 - RIGHT WING [Group 4] . 186
FIGURE 24: MAIN AFT BOOST PUMP NO. 4 WIRING CHANGE W1212 - RIGHT WING [Group 4] . 188
FIGURE 25: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W602, W1214 AND W1210 - LEFT
WING [Group 5] ........................................ 1 9 0
FIGURE 26: MAIN FWD BOOST PUMP NO. 1 WIRING CHANGE W602 AND W1214 - LEFT WING [Group
5 ]  ................................................ 2 0 4
FIGURE 27: MAIN FWD BOOST PUMP NO. 1 WIRING CHANGE W1210 - LEFT WING [Group 5] . . 206
FIGURE 28: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W1216 AND W1212 - RIGHT WING
[Group 5] ............................................ 2 0 8
FIGURE 29: MAIN FWD BOOST PUMP NO. 4 WIRING CHANGE W1216 - RIGHT WING [Group 5] . 222
FIGURE 30: MAIN AFT BOOST PUMP NO. 4 WIRING CHANGE W1212 - RIGHT WING [Group 5] . 224
FIGURE 31: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W602, W1214 AND W1210 - LEFT
WING [Group 6] ........................................ 2 2 6
FIGURE 32: MAIN FWD BOOST PUMP NO. 1 WIRING CHANGE W602 AND W1214 - LEFT WING [Group
6 ]  ................................................ 2 4 0
FIGURE 33: MAIN AFT BOOST PUMP NO. 1 WIRING CHANGE W1210 - LEFT WING [Group 6] . . 242
FIGURE 34: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W1216 AND W1212 - RIGHT WING
[Group 6] ............................................ 2 4 4
FIGURE 35: MAIN FWD BOOST PUMP NO. 4 WIRING CHANGE W1216 - RIGHT WING [Group 6] . 258
FIGURE 36: MAIN AFT BOOST PUMP NO. 4 WIRING CHANGE W1212 - RIGHT WING [Group 6] . 260
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Commercial 
Airplanes
747
Service Bulletin
ALERT
SummaryNumber: 747-28A2306Original Issue: October 02, 2014
ATA System: 2822
SUBJECT: FUEL - Engine Fuel Feed System - Fuel Boost Pump Wiring Change
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO
THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO
THE NEW OWNER.
CONCURRENT REQUIREMENTS
None.
BACKGROUND
This service bulletin gives instructions to replace the fuel boost pump wire bundles inside the in-tank electrical
conduits. The new wire bundles have liners which hold the fuel pump power wires away from the sides of the
metal conduit, which prevent chafing. If this change is not done, this chafing can result in arcing between the
wiring and the conduit, creating an ignition source in the fuel tank could result in a fire or an explosion.
There have been multiple reports of these wire bundles chafing inside the electrical conduit due to high vibration.
The wire bundles can chafe through the sleeving into the insulation, exposing the wire conductors.
Boeing Service Related Problem 747-SRP-28-0113 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 747 FTD 28-07001 is related to this service bulletin.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more
information.
ReferenceAffectedPlanning Data
Paragraph 1.A.2., Spares AffectedNoSpares Affected
Paragraph 1.E., ComplianceYesAD Related
Paragraph 1.H., Weight and Balance ChangesYesWeight and Balance Change
Paragraph 1.I., Electrical Load DataNoElectrical Load Changed
Paragraph 1.K., Publications AffectedYesPublications Affected
Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew
Operations Manual and/or FAA Approved Air-
plane Flight Manual)
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ReferenceAffectedPlanning Data
Paragraph 2.C.1., Kits/PartsYesKits/Parts Required
Paragraph 2.C.2., Parts and Materials Supplied
by the Operator
YesOperator Supplied Material
Paragraph 2.F., Special Tooling Necessary to
do this Service Bulletin
NoSpecial Tooling Required
ACTION (PRR 85901-89S)
– Remove the existing boost pump wire bundles from the electrical conduit.
– Measure and trim the wire Liner.
– Insert the new wire bundles inside the wire Liner.
– Install wire bundle assy (including wire liner) through conduit.
– Do a test of the boost pump.
EFFECTIVITY
747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SR, 747SP, 747-400,
747-400F and 747-400D Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.
COMPLIANCE
The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service
bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin
mandatory.
Federal Aviation Administration (FAA) Airworthiness Directive AD 97-26-07 and AD 98-10-10 are related to this
service bulletin.
The accomplishment of the change given in this service bulletin is the terminating action for the repetitive
inspection as given in Boeing Service Bulletin 747-28A2204 Revision 1, Revision 2, Revision 3.
Boeing recommends that the the change given in this service bulletin be done within 60 months after the original
issue date of this service bulletin.
INDUSTRY SUPPORT INFORMATION
Boeing warranty remedies are not available for the change given in this service bulletin.
MANPOWER
Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION
Boeing Supplied Kits/Parts
Refer to Paragraph 2.A., Material - Price and Availability.
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### Page 9

Commercial 
Airplanes
747
Service Bulletin
ALERT
Number: 747-28A2306
Original Issue: October 02, 2014
ATA System: 2822
SUBJECT: FUEL - Engine Fuel Feed System - Fuel Boost Pump Wiring Change
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO
THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO
THE NEW OWNER.
1.    PLANNING INFORMATION
A. Effectivity
1. Airplanes
Refer to Service Bulletin Index Document D6-30300, Part 3 for Airplane Variable Number, Line
Number, and Serial Number data.
This service bulletin is for the airplanes shown below. An equivalent change is on subsequent
production airplanes. Refer to PRR 85901-89S for data about this change.
DESCRIPTIONCONFIGURATIONGROUP
747 airplanes models with single pump configuration located in Main
1 Forward and Aft, and Main 4 Forward and Aft.
-1
747 airplanes models with single pump configuration located in Main
1 Aft, Main 4 Forward and Aft. Main 1 Forward pump has a cross
feed manifold switch.
-2
747 airplanes models with single pump configuration with fuel
pressure switch located in Main 1 Aft, Main 4 Forward and Aft. Main
1 Forward has single pump and cross feed manifold switch and fuel
pressure switch.
-3
747 airplanes models with single pump configuration with fuel
pressure switch located in Main 1 Forward and Aft, and Main 4
Forward and Aft.
-4
747-SP only that have single pump configuration for Main 1 Aft, Main
4 Forward and Aft. Main 1 Forward pump and cross feed manifold.
-5
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DESCRIPTIONCONFIGURATIONGROUP
747-SP only that have single pump configuration with fuel pressure
switch for Main 1 Aft, Main 4 Forward and Aft. Main 1 Forward has
single pump and cross feed manifold and fuel pressure switch.
-6
Airplane Models:
747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400,
747-400D, 747-400F, 747SP, 747SR
GroupVariable Number
4RA007
4RA013
4RA015 - RA016
4RA026 - RA029
4RA033
4RA217
4RA253
3RA266
4RA305
3RA316
4RA371
4RA401 - RA402
4RA524
4RA526
3RA528
4RA532 - RA534
4RA539 - RA540
3RA543 - RA544
3RA546
4RA560
4RA631
4RA633
4RA635
4RA651
4RA722 - RA723
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GroupVariable Number
3RA726
3RA729
3RA731
3RA749 - RA750
4RA902
4RA908
4RA910
4RA912 - RA913
4RA915 - RA916
4RB001
3RB004 - RB006
3RB008
3RB010 - RB011
3RB013 - RB016
2RB411 - RB413
2RB421
3RB601
3RB604 - RB605
3RB607
3RB681 - RB682
3RB691
2RB692 - RB693
2RB696 - RB697
3RB722
2RB723
2RB741 - RB746
2RB748
4RD001 - RD002
3RD004
3RD041 - RD043
3RD045 - RD047
3RD051 - RD058
2RD059
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GroupVariable Number
2RD083
3RD104
3RD122 - RD125
2RD126 - RD127
3RD131 - RD132
3RD142
2RD143 - RD144
2RD166 - RD167
3RD181
3RD201 - RD203
2RD204
3RD221
2RD224 - RD226
2RD231 - RD235
3RD241 - RD243
3RD252 - RD255
3RD257
2RD258 - RD262
2RD291 - RD292
2RD301 - RD302
3RD352
2RD356
2RD358
3RD361 - RD364
2RD366
3RD381 - RD382
3RD411 - RD412
3RD414
3RD421 - RD424
2RD426
3RD441
2RD451 - RD455
2RD471 - RD475
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GroupVariable Number
3RD513
3RD531
3RD571
3RD583
3RD592 - RD593
3RD601 - RD602
3RD605 - RD606
3RD621 - RD623
3RD641 - RD643
3RD646 - RD647
2RD648 - RD649
3RD657
2RD658 - RD659
3RD671
3RD691 - RD692
3RD701
3RD751 - RD753
2RD754 - RD755
2RD771 - RD775
2RD781 - RD783
1RF001 - RF006
6RG008 - RG009
6RG091
5RG095
6RG122
6RG161 - RG163
5RG173 - RG174
6RG191
6RG193
6RG213
6RG221
5RG222
6RH101
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GroupVariable Number
5RH102
5RH121 - RH122
3RJ131 - RJ133
3RJ301 - RJ302
2RJ303
2RJ321
3RJ331 - RJ332
2RJ333
1RL401 - RL403
1RL411 - RL436
1RL451 - RL456
1RL461 - RL462
1RL471 - RL481
1RL491 - RL492
1RL501 - RL502
1RL511 - RL516
1RL521 - RL522
1RL531 - RL534
1RL551
1RL561 - RL568
1RL571 - RL572
1RL576 - RL577
1RL579
1RL581 - RL586
1RL651 - RL655
1RL671 - RL675
1RL681 - RL684
1RL751 - RL752
1RM001 - RM007
1RM010 - RM013
1RM021 - RM024
1RM026 - RM030
1RM036 - RM045
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GroupVariable Number
1RM051 - RM053
1RM071
1RM081 - RM084
1RM091
1RM096 - RM097
1RM116 - RM117
1RM126 - RM132
1RM136 - RM147
1RM156 - RM158
1RM166 - RM177
1RM191 - RM192
1RM231 - RM233
1RM241 - RM246
1RM261 - RM264
1RM316 - RM318
1RM331 - RM333
1RM341
1RM351 - RM355
1RM366 - RM367
1RM401 - RM403
1RM426
1RM431
1RM441 - RM443
1RM445
1RM801 - RM803
1RM811 - RM813
1RM851 - RM859
1RM861 - RM863
1RM871 - RM899
1RM901 - RM906
1RM911
3RR005
3RR022
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GroupVariable Number
2RR023 - RR025
3RR202
2RR203 - RR204
2RR206
3RR221 - RR226
3RR261 - RR262
3RR264
2RR265 - RR266
3RR301 - RR304
2RR305 - RR310
3RR336
3RR341 - RR345
3RR361 - RR362
3RR421
2RR431 - RR432
2RR441 - RR442
2RR451
3RR501
3RR503 - RR504
2RR526
2RR551 - RR556
2RR561
2RR566
1RR701
1RR721 - RR724
1RR746 - RR748
1RR851 - RR856
1RR861 - RR862
1RR951 - RR952
2RS001 - RS002
2RS211 - RS212
2RS232 - RS233
2RS235 - RS241
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GroupVariable Number
2RS251 - RS255
2RS257 - RS259
2RS263
2RS265 - RS268
2RS271
2RS273 - RS274
2RS276
2RS301 - RS303
2RS305 - RS306
2RS311 - RS320
2RS331 - RS333
2RS341 - RS342
2RS699
2RS703
2RS711 - RS713
2RS721 - RS722
2RS742
2RS761 - RS762
2RS781 - RS782
2RS786
1RT001 - RT014
1RT021 - RT022
1RT031 - RT035
1RT041 - RT047
1RT061
1RT071 - RT075
1RT101 - RT103
1RT121
1RT131 - RT137
1RT151 - RT152
1RT161 - RT168
1RT401 - RT412
1RT431 - RT447
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GroupVariable Number
1RT451 - RT469
1RT471 - RT499
1RT501 - RT535
1RT551 - RT568
1RT571 - RT588
1RT590 - RT591
1RT601
1RT603 - RT605
1RT607 - RT619
1RT621 - RT634
1RT636 - RT657
1RT671 - RT673
1RT681 - RT682
1RT691 - RT699
1RT701 - RT704
1RT711 - RT717
1RT741 - RT757
1RT776 - RT777
1RT781 - RT784
1RT801 - RT803
1RT811 - RT814
1RT831 - RT835
1RT837
1RT861 - RT864
1RT876 - RT880
1RT931 - RT932
1RT945 - RT949
1RT951 - RT955
1RT966 - RT967
1RU001 - RU006
1RU016 - RU017
1RU031 - RU032
1RU051 - RU052
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GroupVariable Number
1RU059 - RU062
1RU081 - RU083
1RU101 - RU102
1RU121 - RU132
1RU801 - RU809
1RU831
1RU833 - RU841
2. Spares Affected
None
B. Concurrent Requirements
None.
C. Reason
This service bulletin gives instructions to replace the fuel boost pump wire bundles inside the in-tank
electrical conduits. The new wire bundles have liners which hold the fuel pump power wires away from
the sides of the metal conduit, which prevent chafing. If this change is not done, this chafing can result
in arcing between the wiring and the conduit, creating an ignition source in the fuel tank could result in
a fire or an explosion.
There have been multiple reports of these wire bundles chafing inside the electrical conduit due to high
vibration. The wire bundles can chafe through the sleeving into the insulation, exposing the wire
conductors.
Boeing Service Related Problem 747-SRP-28-0113 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 747 FTD 28-07001 is related to this service bulletin.
D. Description
– Remove the existing boost pump wire bundles from the electrical conduit.
– Measure and trim the wire Liner.
– Insert the new wire bundles inside the wire Liner.
– Install wire bundle assy (including wire liner) through conduit.
– Do a test of the boost pump..
The work in this service bulletin is done in the maintenance zone(s) given below.
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### Page 20

Group 1:
Affected Maintenance Zones
ZoneModel
544, 545, 644, 645747-400, 747-400D, 747-400F
Group 2:
Affected Maintenance Zones
ZoneModel
544, 545, 644, 645747-100B, 747-100B SUD, 747-
200B, 747-200C, 747-200F,
747-300, 747SR
Group 3:
Affected Maintenance Zones
ZoneModel
544, 545, 644, 645747-100, 747-100B, 747-200B,
747-200C, 747-200F, 747SR
Group 4:
Affected Maintenance Zones
ZoneModel
544, 545, 644, 645747-100, 747-200B
Group 5-6:
Affected Maintenance Zones
ZoneModel
544, 545, 644, 645747SP
E. Compliance
The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to
this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this
service bulletin mandatory.
Federal Aviation Administration (FAA) Airworthiness Directive AD 97-26-07 and AD 98-10-10 are related
to this service bulletin.
The accomplishment of the change given in this service bulletin is the terminating action for the repetitive
inspection as given in Boeing Service Bulletin 747-28A2204 Revision 1, Revision 2, Revision 3.
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### Page 21

Boeing recommends that the the change given in this service bulletin be done within 60 months after
the original issue date of this service bulletin.
F. Approval
This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified
in this service bulletin comply with the applicable regulations and are FAA approved, as well as European
Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved
airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on
the airplane in its original Boeing delivery configuration or as modified by other approved Boeing
changes.
If an airplane has a non-Boeing modification or repair that affects a component or system also affected
by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval
before incorporating this service bulletin.
This service bulletin has been approved by the FAA. In addition, the Manager of the FAA Seattle Aircraft
Certification Office approves the action (i.e. inspection or modification) defined in this service bulletin,
as an alternative method of compliance to the requirements of paragraphs (a), (b), (c), (d) and (e) of
AD 97-26-07 and paragraphs (a) and (b) of AD 98-10-10. All provisions of AD 97-26-07 and AD 98-10-10
that are not specifically referenced in the above statement remain fully applicable and must be complied
with.
G. Manpower
The table below shows an estimate of the task hours necessary to do this change for each airplane .
This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator
task hour data if necessary. The estimate does not include lost time. These are some examples of lost
time:
 Time to adjust to the workplace
 Time to schedule the work
 Time to inspect the work
 Time to cure the materials
 Time to make the parts
 Time to find the tools.
Group 1:
Elapsed HoursTask HoursNumber of PersonsTask
0.751.502Open Access
5.7011.402Figure 1, 2 and 3
6.0012.002Figure 4, 5 and 6
0.751.502Close Access
0.501.02Test
13.7027.40TOTAL FOR EACH AIRPLANE
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Group 2:
Elapsed HoursTask HoursNumber of PersonsTask
0.751.502Open Access
8.4016.802Figure 7, 8 and 9
6.0012.002Figure 10, 11 and 12
0.751.502Close Access
0.501.002Test
16.4032.80TOTAL FOR EACH AIRPLANE
Group 3:
Elapsed HoursTask HoursNumber of PersonsTask
0.751.502Open Access
13.7027.402Figure 13, 14 and 15
10.9021.802Figure 16, 17 and 18
0.751.502Close Access
0.501.002Test
26.6053.20TOTAL FOR EACH AIRPLANE
Group 4:
Elapsed HoursTask HoursNumber of PersonsTask
0.751.502Open Access
11.7523.502Figure 19, 20 and 21
12.1524.302Figure 22, 23 and 24
0.751.502Close Access
0.501.002Test
25.9051.80TOTAL FOR EACH AIRPLANE
Group 5:
Elapsed HoursTask HoursNumber of PersonsTask
0.751.502Open Access
8.4016.802Figure 25, 26 and 27
6.0012.002Figure 28, 29 and 30
0.751.502Close Access
0.501.002Test
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### Page 23

Group 5:
Elapsed HoursTask HoursNumber of PersonsTask
16.4032.80TOTAL FOR EACH AIRPLANE
Group 6:
Elapsed HoursTask HoursNumber of PersonsTask
0.751.502Open Access
13.7027.402Figure 31, 32 and 33
10.9021.802Figure 34, 35 and 36
0.751.502Close Access
0.501.002Test
26.6053.20TOTAL FOR EACH AIRPLANE
H. Weight and Balance Changes
Group 1:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+ 6836.4+ 4.8Group 1
Group 2:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+ 6920.4+ 4.9Group 2
Group 3:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+ 7195.4+ 5.1Group 3
Group 4:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+ 7118.6+ 5.0Group 4
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### Page 24

Group 5:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+ 6893.6+ 4.9Group 5
Group 6:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+ 7168.7+ 5.0Group 6
I. Electrical Load Data
Not changed
J. References
1. Existing Data:
a. Engineering Change Memo PRR 85901-89S
b. Boeing Service Bulletin 747-SRP-28-0113
c. Federal Aviation Administration (FAA) Airworthiness Directive (AD) 97-26-07, 98-10-10
d. Standard Overhaul Practices Manual (SOPM) 20-30-03, 20-43-03
e. Standard Wiring Practices Manual (SWPM) 20-10-11, 20-10-12, 20-10-15, 20-10-19, 20-20-00,
20-20-10, 20-30-11, 20-30-12
f. 747 Fleet Team Digest (FTD) 28-07001
g. 747-100/200/300 Aircraft Maintenance Manual (AMM) 12-09-08 , 20-11-28, 28-22-03
h. 747-100/200/300 Wiring Diagram Manual (WDM) 28-22-31, 28-22-32, 28-42-11, 28-42-13
i. 747-400 Aircraft Maintenance Manual (AMM) 06-09-08, 20-11-28, 28-22-03
j. 747-400 Wiring Diagram Manual (WDM) 28-22-31, 28-22-32
k. 747 Structural Repair Manual (SRM) Chapter 51.
2. Data Supplied with this Service Bulletin:
None.
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### Page 25

3. Installation Drawings Used in the Preparation of this Service Bulletin:
TitleDrawing Number
FUEL BOOST PUMP WIRING CHANGE289U1232
FUEL BOOST PUMP WIRING CHANGE289U1238
WIRE BUNDLE INSTALLATION L.H INSPAR AREA61B70153
WIRE BUNDLE INSTALLATION L.H REAR SPAR61B70159
WIRE BUNDLE INSTALLATION R.H INSPAR AREA61B70154
WIRE BUNDLE INSTALLATION R.H REAR SPAR61B70160
These drawings were used to prepare this service bulletin. These drawings are not necessary to
make the specified changes, and are not supplied with this service bulletin. These drawings may
not be applicable to all airplane configurations or operators.
4. Process Data:
None
K. Publications Affected
1. Publications:
Chapter-SectionPublication
28-22747 Maintenance Manual
28-22, 28-42747 Wiring Diagram Manual
28-22747 Illustrated Parts Catalog
Section 9747-400 Maintenance Planning Data (MPD)
Airworthiness Limitations section747-100/200/300/SP Certification Maintenance
Requirements (CMR)
2. Damage Tolerance Based Structural Inspections:
Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue
Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the
Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary.
L. Interchangeability and Intermixability of Parts
Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts.
M. Software Accomplishment Summary
Not affected.
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### Page 26

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BLANK PAGE

### Page 27

2.    MATERIAL INFORMATION
A. Material - Price and Availability
Boeing can supply the kits shown in Paragraph 2.C., Parts Necessary for Each Airplane . Operators
are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin.
The kits are subject to the terms and conditions of the Boeing standard purchase order acknowledgment.
Prices are in United States Dollars. Terms: Net 30 days.
Reference this service bulletin and submit your purchase order by one of these methods:
1. Order on-line via ATA Spec 2000 or The Boeing PART Page
2. Fax to (206) 662-7145
Group 1:
REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER
AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION
Unit PriceROLT as of the
original issue
date of this Ser-
vice Bulletin (Cal-
endar Days)
QTYDateNameKit Number
$3,888.00347109/28/10Top Kit - Fuel Boost
Pump Wiring Change
015U1845-1
1011/15/10Top Kit - Fuel Boost
Pump Wiring Change
015U1845-1
1012/01/10
1012/15/10
1001/07/11
1001/21/11
1002/04/11
1002/18/11
1003/04/11
1003/18/11
1004/01/11
1004/15/11
1004/29/11
1005/13/11
1005/27/11
1006/13/11
1006/27/11
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### Page 28

Group 2:
REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER
AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION
Unit PriceROLT as of the
original issue
date of this Ser-
vice Bulletin (Cal-
endar Days)
QTYDateNameKit Number
$4,245.003471011/15/10Top Kit - Fuel Boost
Pump Wiring Change
015U1845-2
1012/01/10
1012/15/10
1001/07/11
301/21/11
Group 3:
REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER
AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION
Unit PriceROLT as of the
original issue
date of this Ser-
vice Bulletin (Cal-
endar Days)
QTYDateNameKit Number
$5,326.00347509/17/10Top Kit - Fuel Boost
Pump Wiring Change
015U1845-3
510/01/10
510/15/10
510/29/10
511/12/10
511/30/10
512/14/10
501/06/11
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### Page 29

Group 4:
REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER
AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION
Unit PriceROLT as of the
original issue
date of this Ser-
vice Bulletin (Cal-
endar Days)
QTYDateNameKit Number
$5,146.00347109/23/10Top Kit - Fuel Boost
Pump Wiring Change
015U1845-4
110/21/10
111/18/10
112/20/10
101/26/11
Group 5:
REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER
AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION
Unit PriceROLT as of the
original issue
date of this Ser-
vice Bulletin (Cal-
endar Days)
QTYDateNameKit Number
$4,253.00347101/24/11Top Kit - Fuel Boost
Pump Wiring Change
015U1845-5
Group 6:
REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER
AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION
Unit PriceROLT as of the
original issue
date of this Ser-
vice Bulletin (Cal-
endar Days)
QTYDateNameKit Number
$4,401.00347101/14/11Top Kit - Fuel Boost
Pump Wiring Change
015U1845-6
B. Industry Support Information
Boeing warranty remedies are not available for the configuration changes given in this service bulletin.
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### Page 30

C. Parts Necessary for Each Airplane
1. Kits/Parts:
To get the kits/parts shown below, refer to Paragraph 2.A., Material - Price and Availability.
NOTE: One top kit and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by
the Operator, are necessary for each airplane. The Top Kit is divided into Figure kits for
each installation figure shown in the table below.
Figure Kit
161310741Top Kit
----11015U1845-1
--11--015U1845-2
11----015U1845-3
------015U1845-4
------015U1845-5
------015U1845-6
Figure Kit
343128252219Top Kit
------015U1845-1
------015U1845-2
------015U1845-3
----11015U1845-4
--11--015U1845-5
11----015U1845-6
Top Kit
015U1845-3015U1845-2015U1845-1Wire Kit
--1289U1232-
101
--1289U1232-
102
--1289U1232-
103
--1289U1232-
104
---289U1238-
101
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### Page 31

Top Kit
015U1845-3015U1845-2015U1845-1Wire Kit
1--289U1238-
102
1--289U1238-
103
1--289U1238-
104
1--289U1238-
105
-1-289U1238-
106
-1-289U1238-
107
-1-289U1238-
108
-1-289U1238-
109
---289U1238-
110
---289U1238-
111
---289U1238-
112
---289U1238-
113
---289U1238-
114
Top Kit
015U1845-6015U1845-5015U1845-4Wire Kit
---289U1232-
101
---289U1232-
102
---289U1232-
103
---289U1232-
104
--1289U1238-
101
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### Page 32

Top Kit
015U1845-6015U1845-5015U1845-4Wire Kit
1-1289U1238-
102
--1289U1238-
103
--1289U1238-
104
---289U1238-
105
---289U1238-
106
-1-289U1238-
107
-1-289U1238-
108
---289U1238-
109
1--289U1238-
110
1--289U1238-
111
1--289U1238-
112
-1-289U1238-
113
-1-289U1238-
114
Group 1:
KIT 015U1845-1
NOTES
Existing Part
NumberName
Figure
New Part Number
41
QTY
LINER2274457
MARKER1BAC27EEL30269
MARKER1BAC27EEL30270
MARKER1BAC27EEL30271
MARKER1BAC27EEL30272
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### Page 33

Group 1:
KIT 015U1845-1
NOTES
Existing Part
NumberName
Figure
New Part Number
41
QTY
NUT22BACN10YR3CD
BOLT22BACS12HN3-12
WASHER55NAS1149D0316H
WASHER, FLAT44NAS1149D0416H
Group 2:
KIT 015U1845-2
NOTES
Existing Part
NumberName
Figure
New Part Number
107
QTY
LINER2174457
LINER199264
MARKER1BAC27EEL30269
MARKER1BAC27EEL30270
MARKER1BAC27EEL30271
MARKER1BAC27EEL30272
NUT24BACN10YR3CD
BOLT24BACS12HN3-12
WASHER511NAS1149D0316H
WASHER, FLAT44NAS1149D0416H
Group 3:
KIT 015U1845-3
NOTES
Existing Part
NumberName
Figure
New Part Number
1613
QTY
LINER2199264
LINER199271
MARKER1BAC27EEL30269
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### Page 34

Group 3:
KIT 015U1845-3
NOTES
Existing Part
NumberName
Figure
New Part Number
1613
QTY
MARKER1BAC27EEL30270
MARKER1BAC27EEL30271
MARKER1BAC27EEL30272
NUT46BACN10YR3CD
BOLT46BACS12HN3-12
WASHER1117NAS1149D0316H
WASHER, FLAT44NAS1149D0416H
Group 4:
KIT 015U1845-4
NOTES
Existing Part
NumberName
Figure
New Part Number
2219
QTY
LINER2299264
MARKER1BAC27EEL30269
MARKER1BAC27EEL30270
MARKER1BAC27EEL30271
MARKER1BAC27EEL30272
NUT44BACN10YR3CD
BOLT44BACS12HN3-12
WASHER1111NAS1149D0316H
WASHER, FLAT44NAS1149D0416H
Group 5:
KIT 015U1845-5
NOTES
Existing Part
NumberName
Figure
New Part Number
2825
QTY
LINER2174457
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Group 5:
KIT 015U1845-5
NOTES
Existing Part
NumberName
Figure
New Part Number
2825
QTY
LINER199264
MARKER1BAC27EEL30269
MARKER1BAC27EEL30270
MARKER1BAC27EEL30271
MARKER1BAC27EEL30272
NUT22BACN10YR3CD
BOLT22BACS12HN3-12
WASHER55NAS1149D0316H
WASHER, FLAT44NAS1149D0416H
Group 6:
KIT 015U1845-6
NOTES
Existing Part
NumberName
Figure
New Part Number
3431
QTY
LINER2199264
LINER199271
MARKER1BAC27EEL30269
MARKER1BAC27EEL30270
MARKER1BAC27EEL30271
MARKER1BAC27EEL30272
NUT44BACN10YR3CD
BOLT44BACS12HN3-12
WASHER1111NAS1149D0316H
WASHER, FLAT44NAS1149D0416H
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### Page 36

Group 1:
KIT 289U1232-101
NotesNameQTYNew Part Number
ID SLEEVE1289U1232-10101
WIRING BOOST
PUMP WIRING
CHANGE (W4520)
1289U1232-101A
WIRE CUT &
CODE
1289U1232-101W
ID SLEEVE2289U1238-10104
ID SLEEVE1289U1238-10106
ID SLEEVE1289U1238-10201
ID SLEEVE1289U1238-10202
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG2BACT12AC3
TERMINAL, LUG1BACT12AC50
SPLICE3NAS1387-4
Group 1:
KIT 289U1232-102
NotesNameQTYNew Part Number
ID SLEEVE1289U1232-10101
WIRING BOOST
PUMP WIRING
CHANGE (W4519)
1289U1232-102A
WIRE CUT &
CODE
1289U1232-102W
ID SLEEVE2289U1238-10104
ID SLEEVE1289U1238-10201
ID SLEEVE1289U1238-10202
ID SLEEVE1289U1238-10203
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG2BACT12AC3
TERMINAL, LUG1BACT12AC50
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### Page 37

Group 1:
KIT 289U1232-102
NotesNameQTYNew Part Number
SPLICE3NAS1387-4
Group 1:
KIT 289U1232-103
NotesNameQTYNew Part Number
WIRING BOOST
PUMP WIRING
CHANGE (W4550)
1289U1232-103A
WIRE CUT &
CODE
1289U1232-103W
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE2289U1238-10301
ID SLEEVE1289U1238-10302
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG2BACT12AC3
TERMINAL, LUG1BACT12AC50
SPLICE3NAS1387-4
Group 1:
KIT 289U1232-104
NotesNameQTYNew Part Number
WIRING BOOST
PUMP WIRING
CHANGE (W4549)
1289U1232-104A
WIRE CUT &
CODE
1289U1232-104W
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE2289U1238-10301
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### Page 38

Group 1:
KIT 289U1232-104
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10401
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG2BACT12AC3
TERMINAL, LUG1BACT12AC50
SPLICE3NAS1387-4
Group 4:
KIT 289U1238-101
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE2289U1238-10104
ID SLEEVE2289U1238-10105
ID SLEEVE1289U1238-10106
WIRE2289U1238-10110
FUEL BOOST
PUMP WIRING
CHANGE (W1214)
1289U1238-101A
WIRE CUT &
CODE
1289U1238-101W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG4BACT12AC3
TERMINAL, LUG2BACT12AC47
TERMINAL, LUG1BACT12AC50
SPLICE4NAS1387-4
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### Page 39

Group 3-4, 6:
KIT 289U1238-102
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10103
ID SLEEVE2289U1238-10104
ID SLEEVE2289U1238-10105
WIRE2289U1238-10110
ID SLEEVE1289U1238-10201
ID SLEEVE1289U1238-10202
ID SLEEVE1289U1238-10203
FUEL BOOST
PUMP WIRING
CHANGE (W1210)
1289U1238-102A
WIRE CUT &
CODE
1289U1238-102W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG4BACT12AC3
TERMINAL, LUG2BACT12AC47
TERMINAL, LUG1BACT12AC50
SPLICE4NAS1387-4
Group 3-4:
KIT 289U1238-103
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
WIRE2289U1238-10110
ID SLEEVE2289U1238-10301
ID SLEEVE1289U1238-10302
ID SLEEVE2289U1238-10304
FUEL BOOST
PUMP WIRING
CHANGE (W1216)
1289U1238-103A
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### Page 40

Group 3-4:
KIT 289U1238-103
NotesNameQTYNew Part Number
WIRE CUT &
CODE
1289U1238-103W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG4BACT12AC3
TERMINAL, LUG2BACT12AC47
TERMINAL, LUG1BACT12AC50
SPLICE4NAS1387-4
Group 3-4:
KIT 289U1238-104
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10103
WIRE2289U1238-10110
ID SLEEVE1289U1238-10201
ID SLEEVE1289U1238-10202
ID SLEEVE2289U1238-10301
ID SLEEVE2289U1238-10304
ID SLEEVE1289U1238-10401
FUEL BOOST
PUMP WIRING
CHANGE (W1212)
1289U1238-104A
WIRE CUT &
CODE
1289U1238-104W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG4BACT12AC3
TERMINAL, LUG2BACT12AC47
TERMINAL, LUG1BACT12AC50
SPLICE4NAS1387-4
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ALERTALERT

### Page 41

Group 3:
KIT 289U1238-105
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE3289U1238-10104
ID SLEEVE2289U1238-10105
ID SLEEVE1289U1238-10106
WIRE3289U1238-10110
ID SLEEVE1289U1238-10501
FUEL BOOST
PUMP WIRING
CHANGE (W602,
W1214)
1289U1238-105A
WIRE CUT &
CODE
1289U1238-105W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG6BACT12AC3
TERMINAL, LUG3BACT12AC47
TERMINAL, LUG1BACT12AC50
SPLICE5NAS1387-4
Group 2:
KIT 289U1238-106
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE3289U1238-10104
ID SLEEVE1289U1238-10106
WIRE1289U1238-10110
ID SLEEVE1289U1238-10501
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ALERTALERT

### Page 42

Group 2:
KIT 289U1238-106
NotesNameQTYNew Part Number
BOOST PUMP
WIRING CHANGE
(W602, W1214)
1289U1238-106A
WIRE CUT &
CODE
1289U1238-106W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG4BACT12AC3
TERMINAL, LUG1BACT12AC47
TERMINAL, LUG1BACT12AC50
SPLICE4NAS1387-4
Group 2, 5:
KIT 289U1238-107
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10103
ID SLEEVE2289U1238-10104
ID SLEEVE1289U1238-10201
ID SLEEVE1289U1238-10202
ID SLEEVE1289U1238-10203
FUEL BOOST
PUMP WIRING
CHANGE (W1210)
1289U1238-107A
WIRE CUT &
CODE
1289U1238-107W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG2BACT12AC3
TERMINAL, LUG1BACT12AC50
SPLICE3NAS1387-4
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### Page 43

Group 2, 5:
KIT 289U1238-108
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE1289U1238-10203
ID SLEEVE2289U1238-10301
FUEL BOOST
PUMP WIRING
CHANGE (W1216)
1289U1238-108A
WIRE CUT &
CODE
1289U1238-108W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG2BACT12AC3
TERMINAL, LUG1BACT12AC50
SPLICE3NAS1387-4
Group 2:
KIT 289U1238-109
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10103
ID SLEEVE1289U1238-10201
ID SLEEVE1289U1238-10202
ID SLEEVE2289U1238-10301
ID SLEEVE1289U1238-10401
FUEL BOOST
PUMP WIRING
CHANGE (W1212)
1289U1238-109A
WIRE CUT &
CODE
1289U1238-109W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG2BACT12AC3
TERMINAL, LUG1BACT12AC50
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ALERTALERT

### Page 44

Group 2:
KIT 289U1238-109
NotesNameQTYNew Part Number
SPLICE3NAS1387-4
Group 6:
KIT 289U1238-110
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE2289U1238-10301
ID SLEEVE1289U1238-10302
FUEL BOOST
PUMP WIRING
CHANGE (W1216)
1289U1238-103A
WIRE CUT &
CODE
1289U1238-103W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG2BACT12AC3
TERMINAL, LUG1BACT12AC50
SPLICE6NAS1387-4
Group 6:
KIT 289U1238-111
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10103
WIRE2289U1238-10110
ID SLEEVE1289U1238-10201
ID SLEEVE1289U1238-10202
ID SLEEVE1289U1238-10301
ID SLEEVE2289U1238-10304
ID SLEEVE1289U1238-10401
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### Page 45

Group 6:
KIT 289U1238-111
NotesNameQTYNew Part Number
FUEL BOOST
PUMP WIRING
CHANGE (W1212)
1289U1238-104A
ID SLEEVE1289U1238-11102
WIRE CUT &
CODE
1289U1238-111W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG3BACT12AC3
TERMINAL, LUG2BACT12AC47
TERMINAL, LUG1BACT12AC50
SPLICE5NAS1387-4
Group 6:
KIT 289U1238-112
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE3289U1238-10104
ID SLEEVE2289U1238-10105
ID SLEEVE1289U1238-10106
WIRE2289U1238-10110
FUEL BOOST
PUMP WIRING
CHANGE (W602,
W1214)
1289U1238-105A
WIRE CUT &
CODE
1289U1238-105W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG5BACT12AC3
TERMINAL, LUG2BACT12AC47
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ALERTALERT

### Page 46

Group 6:
KIT 289U1238-112
NotesNameQTYNew Part Number
TERMINAL, LUG1BACT12AC50
SPLICE6NAS1387-4
Group 5:
KIT 289U1238-113
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10101
ID SLEEVE1289U1238-10102
ID SLEEVE1289U1238-10103
ID SLEEVE3289U1238-10104
ID SLEEVE1289U1238-10106
BOOST PUMP
WIRING CHANGE
(W602, W1214)
1289U1238-106A
WIRE CUT &
CODE
1289U1238-106W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG4BACT12AC3
TERMINAL, LUG1BACT12AC50
SPLICE5NAS1387-4
Group 5:
KIT 289U1238-114
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-10103
ID SLEEVE1289U1238-10201
ID SLEEVE1289U1238-10202
ID SLEEVE1289U1238-10301
ID SLEEVE1289U1238-10401
FUEL BOOST
PUMP WIRING
CHANGE (W1212)
1289U1238-109A
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### Page 47

Group 5:
KIT 289U1238-114
NotesNameQTYNew Part Number
ID SLEEVE1289U1238-11102
WIRE CUT &
CODE
1289U1238-114W
SLEEVE1BACS13S187B
SLEEVE1BACS13S287C
TERMINAL, LUG1BACT12AC3
TERMINAL, LUG1BACT12AC50
SPLICE4NAS1387-4
2. Parts and Materials Supplied by the Operator:
NotesNameQTYPart Number/ Specification
Corrosion Inhibiting Material
Non-Drying Paste
-BMS3-38
Sealant4 OzBMS5-45, CLASS C
Chemical Conversion Coating2 OzALODINE 600
Lockwire5 ftMS20995NC32
3. Parts Modified and Reidentified:
None.
4. Parts Removed and Not Replaced:
None.
D. Parts Necessary to Change Spares
None.
E. Special Tooling - Price and Availability
None.
F. Special Tooling Necessary to do this Service Bulletin
No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance
and overhaul tools in the manuals given in Paragraph 1.J., References, can be necessary. Examine
operator tool supply to make sure all necessary tools are available.
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### Page 48

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BLANK PAGE

### Page 49

3.    ACCOMPLISHMENT INSTRUCTIONS
A. GENERAL INFORMATION
CAUTION: KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL
PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL,
METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE
DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR
OTHER ELECTRICAL DAMAGE.
NOTE: 1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for
definition of the acronyms.
2. Obey all of the warnings and cautions given in the specified manual sections.
3. Unless shown differently, these dimensions and tolerances are used:
– Linear dimensions are in inches
– Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus
or minus 0.03 inch
– Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch
– Angular tolerance is plus or minus 2 degrees
– Hole dimensions for standard solid rivets and fasteners are in Structural Repair
Manual (SRM) Chapter 51
– Torque limits to tighten nuts and bolts are in SRM Chapter 51
4. Use the approved fastener and process material substitutions in accordance with
SRM Chapter 51.
5. Refer to the SWPM 20-10-11 and SWPM 20-10-12 for the wire installation procedures,
and SWPM 20-10-19 for the wire separation requirements, as accepted procedures.
6. The necessary conditions for selection of clamp type and size are included in SWPM
20-10-12. If any wire bundle support clamp specified in this service bulletin does not
make a correct fit on the wire bundle, refer to SWPM 20-10-12 as an accepted
procedure to select a clamp that fits correctly.
7. If the length of any fastener specified in this service bulletin does not meet installation
standards given in SRM Chapter 51, then a fastener of the same specification, or
an approved substitute, with a length which meets the installation standards given
in SRM Chapter 51 may be used. In addition, washers may be installed for fastener
grip length in accordance with SRM Chapter 51.
8. These work instructions refer to procedures included in other Boeing documents.
When the words "refer to" are used and the operator has an accepted alternative
procedure, the accepted alternative procedure can be used. When the words "in
accordance with" are included in the instruction, the procedure in the Boeing document
must be used.
9. If it is necessary to remove more parts for access, you can remove those parts. If
you can get access without removing identified parts, it is not necessary to remove
all of the identified parts. Jacking and shoring limitations must be observed.
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### Page 50

10. This service bulletin includes functional test procedures for the systems changed by
this service bulletin. More functional tests can possibly be necessary in accordance
with standard maintenance practices because of interruption to other airplane systems.
B. WORK INSTRUCTIONS
1. Group 1:
Open these circuit breaker and attach DO-NOT-CLOSE tags
a. On the left panel P414:
NameNumber
FUEL BOOST PUMP MAIN AFT 1C00801
FUEL BOOST PUMP MAIN FWD 4C00811
b. On the right panel P415:
NameNumber
FUEL BOOST PUMP MAIN FWD 1,C00802
FUEL BOOST PUMP MAIN AFT 4,C00810
2. Group 2-6:
Open these circuit breaker and attach DO-NOT-CLOSE tags
a. On the left panel P14:
NameNumber
FUEL BOOST PUMP MAIN AFT 1C00801
FUEL BOOST PUMP MAIN FWD 4C00811
b. On the right panel P15:
NameNumber
FUEL BOOST PUMP MAIN AFT 4C00810
FUEL BOOST PUMP MAIN FWD 1C00802
3. Get access to main tank no.1 and 4 boost pumps - left and right wing:
a. Group 1:
For main tank no.1 and 4 forward and aft boost pumps. Remove applicable access door
545CB, 545DB, 645CB and 645DB. Refer to 747-400 AMM 06-09-08 as an accepted procedure
for locations.
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### Page 51

b. Group 2-6:
For main tank no.1 and 4 forward and aft boost pumps. Remove applicable access door
545CB, 545DB, 645CB and 645DB. Refer to 747-100/200/300 AMM 12-09-08 as an accepted
procedure for locations.
4. Change the wire bundle of main FWD and AFT fuel boost pump no. 1 on the left wing in accordance
with these figures:
a. Group 1:
FIGURE 1; FIGURE 2 and FIGURE 3
b. Group 2:
FIGURE 7; FIGURE 8 and FIGURE 9
c. Group 3:
FIGURE 13; FIGURE 14 and FIGURE 15
d. Group 4:
FIGURE 19; FIGURE 20 and FIGURE 21
e. Group 5:
FIGURE 25; FIGURE 26 and FIGURE 27
f. Group 6:
FIGURE 31; FIGURE 32 and FIGURE 33
5. Change the wire bundle of main FWD and AFT fuel boost pump no. 4 on the right wing in
accordance with these figures:
a. Group 1:
FIGURE 4; FIGURE 5 and FIGURE 6
b. Group 2:
FIGURE 10; FIGURE 11 and FIGURE 12
c. Group 3:
FIGURE 16; FIGURE 17 and FIGURE 18
d. Group 4:
FIGURE 22; FIGURE 23 and FIGURE 24
e. Group 5:
FIGURE 28; FIGURE 29 and FIGURE 30
f. Group 6:
FIGURE 34; FIGURE 35 and FIGURE 36
6. Group 1:
Close these circuit breaker and remove DO-NOT-CLOSE tags
a. On the left panel P414.
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### Page 52

NameNumber
FUEL BOOST PUMP MAIN AFT 1C00801
FUEL BOOST PUMP MAIN FWD 4C00811
b. On the right panel P415.
NameNumber
FUEL BOOST PUMP MAIN FWD 1,C00802
FUEL BOOST PUMP MAIN AFT 4,C00810
7. Group 2-6:
Close these circuit breaker and remove DO-NOT-CLOSE tags
a. On the left panel P14:
NameNumber
FUEL BOOST PUMP MAIN AFT 1C00801
FUEL BOOST PUMP MAIN FWD 4C00811
b. On the right panel P15:
NameNumber
FUEL BOOST PUMP MAIN AFT 4C00810
FUEL BOOST PUMP MAIN FWD 1C00802
8. Group 1:
Do a Operational Test of No. 1 and 4 Main Tank Boost Pumps. Refer to 747-400 AMM 28-22-03
as an accepted procedure.
9. Group 2-6:
Do a Operational Test of No. 1 and 4 Main Tank Boost Pumps. Refer to 747-100/200/300 AMM
28-22-03 as an accepted procedure.
10. Close access doors to main tank no.1 and 4 boost pumps - left and right wing:
a. Group 1:
For main tank no.1 and 4 forward and aft boost pumps. Close applicable access door 545CB,
545DB, 645CB and 645DB. Refer to 747-400 AMM 06-09-08 as an accepted procedure for
locations.
b. Group 2-6:
For main tank no.1 and 4 forward and aft boost pumps. Close applicable access door 545CB,
545DB, 645CB and 645DB. Refer to 747-100/200/300 AMM 12-09-08 as an accepted
procedure for locations.
11. Put the airplane back to a serviceable condition
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ALERTALERT

### Page 53 (OCR)

BOEING SERVICE BULLETIN 747-28A2306
ALERT  ALERT
This Figure applies only to: Group 1.
W4520, W4519
SPLICE AREA
W4519
+ 12
W4520
W4519
GD160S
50 EF
WS
680
W4520
W4520
WS  700  1964973
FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
(SHEET 1 OF 12)
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### Page 54 (OCR)

BOEING SERVICE BULLETIN 747-28A2306
ALERT  ALERT
WS
697
• W4520
•A  WS
724.5
W4519
W4520
LINER
W4519
W4520
DM28
W4519
DM22
1964974
FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
(SHEET 2 OF 12)
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### Page 55 (OCR)

BOEING SERVICE BULLETIN 747-28A2306
ALERT  ALERT
WIRE  SLEEVE
CLAMP  4 12
GAP A
GROUND
WIRE SHIELD
(4)
GAP B →
A-A  1964975
FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
(SHEET 3 OF 12)
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### Page 56 (OCR)

BOEING SERVICE BULLETIN 747-28A2306
ALERT  ALERT
GROUND  GROUND
WIRE SHIELD  WIRE SHIELD
(GD18682S)  (GD18685S)
3 11)
/ W4519  • W4520
GD18685
GD18682S
B  B
INBD  INBD
WS 724.5  WS 697
WASHER
GROUND
WIRE
WASHER  STRUCTURE
_ RING
TYPICAL  B-B  1972523
FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
(SHEET 4 OF 12)
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### Page 57

FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
(SHEET 5 OF 12)
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ALERTALERT

### Page 58 (OCR)

BOEING SERVICE BULLETIN 747-28A2306
ALERT  ALERT
SELF-LOCKING NUT
WASHER  • TERMINAL LUG
- WASHER
• METAL STRUCTURE
WASHER
FASTENER HEAD
SEALANT
TERMINAL LUG
KARL
METAL
STRUCTURE
2010851
FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
(SHEET 6 OF 12)
Original Issue: October 02, 2014
Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright © Unpublished  747-28A2306
Work - See page 1 for details.  58 of 261

### Page 59

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
MORE DATAQTYIDENTIFICATIONNAMETASKSTEP
From fuel boost
pumps.
--Electrical ConnectorsDisconnect1
Refer to 747-400
AMM 20-11-28 as
an accepted proce-
dure.
--LockwireRemove2
One for each loca-
tion. Keep the bolts
and discard the exist-
ing washers.
2BACB30NM4HK5BoltRemove / Keep
Tie pull cord to
pump end of the
wire bundles W4520
and W4519 for
pulling new wire
bundle in the con-
duit. Make sure the
cord are longer than
the conduit.
--Pull cordsAttach3
Keep all hardware--ClampsLoosen4
Keep the bolt and
nut for re-use if
needed, and discard
the existing washers
--Ground wireDisconnect5
FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
(SHEET 7 OF 12)
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: October 02, 2014
747-28A2306
59 of 261
BOEING SERVICE BULLETIN 747-28A2306
ALERTALERT

### Page 60

MORE DATAQTYIDENTIFICATIONNAMETASKSTEP
Cut and remove ex-
isting wires from
splice area to the
conduit. Temporary
label the wires in
splice area. Remove
the pull cord from
the wire bundle and
leave in the conduit
for later installation.
-W4520WireRemove6
Cut and remove ex-
isting wires from
splice area to the
conduit. Temporary
label the wires in
splice area. Remove
the pull cord from
the wire bundle and
leave in the conduit
for later installation.
-W4519WireRemove
Insert the non-part
marked liner end fist
into the spar side
conduit opening at
WS 697 and WS
724.5, using pull
cord in the conduit.
274457LINERInstall (New)7
(b)-74457LINERMeasure
Out of conduit, re-
move the pull cord
from the liner and
leave it in the con-
duit.
274457LINERRemove / Keep
(b), (d)274457LINERCut
If required, including
sharp edges at liner
cut end.
274457LINERDeburr
(a)-BMS3-38Corrosion Inhibiting
Material Non-Drying
Paste
Apply8
FIGURE 1: FUEL BOOST PUMP WIRE BUNDLE REPLACEMENT W4520 AND W4519 - LEFT WING
(SHEET 8 OF 12)
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: October 02, 2014
747-28A2306
60 of 261
BOEING SERVICE BULLETIN 747-28A2306
ALERTALERT

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