# Boeing Alert Service Bulletin 737-26A1122: Revision 3

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- Document: [Boeing Alert Service Bulletin 737-26A1122](https://openairdocs.org/service-documents/boeing/737-26a1122.md)
- Title as filed: Boeing Service Bulletin 737-26A1122, R03 BOEING
- Pages: 227
- PDF: https://openairdocs.org/files/sha256/f3/e1/f3e175fbb125d574c78cc195f4212acb229cbb1a68eaaa7918620234365b7ec1
- Page: https://openairdocs.org/service-documents/boeing/737-26a1122/file/f3e175fbb125

## Text

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### Page 1

Commercial 
Airplanes
737
Service Bulletin
ALERT
Number: 737-26A1122
Original Issue:
December 13, 2007
Revision 3: January 31, 2020
ATA System: 2616
SUBJECT: FIRE PROTECTION - Lower Cargo Compartment Smoke Detection - Forward Cargo
Compartment Smoke Penetration Electrical Changes
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 © 2007 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Unpublished Work.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, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, 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.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
1 of 227
5.0

### Page 2

Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
2 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT
BLANK PAGE

### Page 3

Table of Contents
Revision Transmittal Sheet .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2. Data Supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 28
K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
M. Software Accomplishment Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
C. Parts Necessary for Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . . . 52
3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 54
3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
FIGURE 1: REMOVE THE J22 JUNCTION BOX ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . 89
FIGURE 2: J22 JUNCTION BOX ASSEMBLY RELAY AND WIRE BUNDLE REMOVAL . . . . . . . . 92
FIGURE 3: CHANGE THE WIRE CONNECTOR HOLE SIZES ON THE J22 JUNCTION BOX ASSEMBLY
[Group 1-4; Group 5, Configuration 1; Group 6-13] . . . . . . . . . . . . . . . . . . . . . . 96
FIGURE 4: CHANGE THE WIRE CONNECTOR HOLE SIZE ON THE J22 JUNCTION BOX ASSEMBLY
[Group 5, Configuration 2] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
FIGURE 5: W0076 WIRE BUNDLE ROUTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
FIGURE 6: WIRE BUNDLE W0076 WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . 101
FIGURE 7: J22 JUNCTION BOX ASSEMBLY WIRE BUNDLE AND RELAY INSTALLATION . . . . 103
FIGURE 8: REMOVE THE J24 JUNCTION BOX ASSEMBLY . . . . . . . . . . . . . . . . . . . . . 107
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
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Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
3 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 4

FIGURE 9: J24 JUNCTION BOX ASSEMBLY RELAY AND WIRE BUNDLE REMOVAL [Group 1, 3-6, 8,
11-13] .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
FIGURE 10: J24 JUNCTION BOX ASSEMBLY RELAY AND WIRE BUNDLE REMOVAL [Group 2, 7, 9-10]
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
FIGURE 11: W0080 WIRE BUNDLE ROUTING [Group 1-2, 4-13] . . . . . . . . . . . . . . . . . . . . 118
FIGURE 12: W0080 WIRE BUNDLE ROUTING [Group 3] . . . . . . . . . . . . . . . . . . . . . . . . 119
FIGURE 13: WIRE BUNDLE W0080 WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . 120
FIGURE 14: J24 JUNCTION BOX ASSEMBLY MARKER INSTALLATION [Group 1, 4-6, 8, 11-13] . . 128
FIGURE 15: J24 JUNCTION BOX ASSEMBLY RELAY AND WIRE BUNDLE INSTALLATION [Group 1, 4-6,
8, 11-13] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
FIGURE 16: J24 JUNCTION BOX ASSEMBLY MARKER INSTALLATION [Group 2, 7] . . . . . . . . 139
FIGURE 17: J24 JUNCTION BOX ASSEMBLY RELAY AND WIRE BUNDLE INSTALLATION [Group 2, 7]
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
FIGURE 18: J24 JUNCTION BOX ASSEMBLY MARKER INSTALLATION [Group 3] . . . . . . . . . 149
FIGURE 19: J24 JUNCTION BOX ASSEMBLY RELAY AND WIRE BUNDLE INSTALLATION [Group 3] . 154
FIGURE 20: J24 JUNCTION BOX ASSEMBLY MARKER INSTALLATION [Group 9-10] . . . . . . . . 159
FIGURE 21: J24 JUNCTION BOX ASSEMBLY RELAY AND WIRE BUNDLE INSTALLATION [Group 9-10]
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
FIGURE 22: W2110 WIRE BUNDLE ROUTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
FIGURE 23: WIRE BUNDLE W2110 WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . 173
FIGURE 24: W2508 AND W5158 WIRE BUNDLE ROUTING [Group 1-3, 5-7, 9-13] . . . . . . . . . . 175
FIGURE 25: WIRE BUNDLE W2508 WIRING CHANGE [Group 1-3, 5-7, 9-13] . . . . . . . . . . . . . 180
FIGURE 26: WIRE BUNDLE W5158 WIRING CHANGE [Group 1-3, 5-7, 9-13] . . . . . . . . . . . . . 182
FIGURE 27: W2508 WIRE BUNDLE ROUTING [Group 4, 8] . . . . . . . . . . . . . . . . . . . . . . . 183
FIGURE 28: WIRE BUNDLE W2508 WIRING CHANGE [Group 4, 8] . . . . . . . . . . . . . . . . . . 185
FIGURE 29: W5100 AND W5510 WIRE BUNDLE ROUTING [Group 1-3, 5-7, 9-13] . . . . . . . . . . 186
FIGURE 30: W5100, W5158 AND W5510 WIRE BUNDLE ROUTING [Group 4, 8] . . . . . . . . . . . 188
FIGURE 31: WIRE BUNDLE W5100 WIRING CHANGE [Group 1, 4, 6, 8] . . . . . . . . . . . . . . . 191
FIGURE 32: WIRE BUNDLE W5158 WIRING CHANGE [Group 4, 8] . . . . . . . . . . . . . . . . . . 193
FIGURE 33: WIRE BUNDLE W5510 WIRING CHANGE [Group 1-3, 5-7, 9-13] . . . . . . . . . . . . . 194
FIGURE 34: WIRE BUNDLE W5510 WIRING CHANGE [Group 4, 8] . . . . . . . . . . . . . . . . . . 196
FIGURE 35: W5110, W6210 AND W6510 WIRE BUNDLE ROUTING . . . . . . . . . . . . . . . . . . 198
FIGURE 36: W5156 AND W6510 WIRE BUNDLE ROUTING . . . . . . . . . . . . . . . . . . . . . . 207
FIGURE 37: WIRE BUNDLE W6510 WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . 212
FIGURE 38: WIRE BUNDLE W5156 WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . 214
FIGURE 39: WIRE BUNDLE W5110 WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . 215
FIGURE 40: WIRE BUNDLE W6210 WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . 216
FIGURE 41: INSTALL THE J22 JUNCTION BOX ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . 217
FIGURE 42: INSTALL THE J24 JUNCTION BOX ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . 220
FIGURE 43: ELECTRICAL AND ELECTRONICS COMPARTMENT - WIRE BUNDLE W5100 - WIRE CHANGE
[Group 2-3, 5, 7, 9-13] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
APPENDIX A: TESTS FOR DISTURBED SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
APPENDIX B: PART DEMAND INTENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
4 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 5

Commercial 
Airplanes
737
Service Bulletin
ALERT
Revision Transmittal SheetNumber: 737-26A1122Original Issue: December 13, 2007
Revision 3: January 31, 2020
ATA System: 2616
SUBJECT: FIRE PROTECTION - Lower Cargo Compartment Smoke Detection - Forward Cargo
Compartment Smoke Penetration Electrical Changes
This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION
Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2016-04-06 is related to this service bulletin.
Effects of this Revision on airplanes on which Original Issue, Revision 1 or Revision 2 was previously done:
None.
Airplanes YG044, YG067, YG069, YG074, YG081, YG084 and YG088 were added to new Group 13 of this
service bulletin effectivity.
REASON FOR REVISION
This revision is sent to add airplanes YG044, YG067, YG069, YG074, YG081, YG084 and YG088 to the effectivity
of this service bulletin. Also, this revision adds new wire kits to increase the length of one wire, add optional part
numbers for some connector identification tapes and filler rods, correct wire bundle W6210 routing data and
correct wire bundle W5510 terminal block and splice data. A new Appendix is added to give a list of tests that
can be used to function test the systems that may have been disturbed by the work done on the J22 and J24
junction boxes.
These sections were changed:
1.
In Summary, Background, Summary Evaluation table, changed text.
2. In Summary, Compliance,
a. Added Service Related Problem (SRP).
b. Added Federal Aviation Administration (FAA) Airworthiness Directive (AD) statement.
c. Changed Boeing compliance statement and added Group 13 compliance statement.
3. In Paragraph 1.A.1., Airplanes:
a. Changed airplane applicability statement.
Export Controlled ECCN: 9E991 - BOEING
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### Page 6

b. Added airplanes and new Group 13.
4.
In Paragraph 1.B., Concurrent Requirements, added service bulletin revision levels.
5. In Paragraph 1.C., Reason:
a. Added Service Related Problem (SRP).
b. Added revision statement.
c. Added Alternative Method of Compliance Notice (AMOC) statement.
6. In Paragraph 1.D., Description, added revision statement.
7. In Paragraph 1.E., Compliance:
a. Added FAA AD statement.
b. Changed Boeing compliance statement and added Group 13 compliance statement.
8. In Paragraph 1.F., Approval, added Alternative Method of Compliance (AMOC) statement.
9. In Paragraph 1.G., Manpower, added Group 13 data.
10. In Paragraph 1.H, Weight and Balance Changes, changed weight data.
11. In Paragraph 1.J.1., Existing Data:
a. Added service bulletin reference.
b. Added SRP reference.
c. Added FAA AD reference.
d. Added Aircraft Maintenance Manual (AMM) references.
12. In Paragraph 2.A., Material - Price and Availability:
a. Changed kit availability, pricing, ROLT data, and Group 13 data.
b. Added wire kit pricing tables.
13. In Paragraph 2.C., Parts Necessary for Each Airplane, added wire kit parts tables.
14. In Paragraph 3.A., General Information, added Appendix note.
15. In Figure 31, flag note table, changed note and added optional part numbers.
16. In Figure 34, sheet 1, changed terminal block and splice data.
17. In Figure 35, sheets 2 and 3, added wire bundle reference.
18. In Figure 40, flag note table, changed note.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
6 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 7

19. In Figure 43, flag note table, changed note and added optional part numbers.
20.
Appendix A, added test for disturbed systems.
21. Appendix B, moved Part Demand Intent to Appendix B.
The data given in Alternative Method of Compliance Notice 737-26-1122 AMOC 01 is included in this revision.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity and format changes,
to show the location of all content changes.
Pages with no vertical lines have no changes.
REVISION HISTORY
December 13, 2007Original Issue:
August 13, 2009Revision 1:
March 07, 2017Revision 2:
January 31, 2020Revision 3:
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
7 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 8

Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
8 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT
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Commercial 
Airplanes
737
Service Bulletin
ALERT
SummaryNumber: 737-26A1122Original Issue: December 13, 2007
Revision 3: January 31, 2020
ATA System: 2616
SUBJECT: FIRE PROTECTION - Lower Cargo Compartment Smoke Detection - Forward Cargo
Compartment Smoke Penetration Electrical Changes
THIS DOCUMENT 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 DOCUMENT
TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE
NEW OWNER.
CONCURRENT REQUIREMENTS
Refer to Paragraph 1.B., Concurrent Requirements.
BACKGROUND
This service bulletin gives instructions to change the Environment Control System (ECS) to turn off the E/E
Cooling Exhaust fans and open the Overboard Exhaust Valve (OEV) if a fire is detected in the forward cargo
compartment. During a simulated fire test in the forward cargo compartment on 737-800 airplanes, smoke
penetrated into the passenger cabin and flight deck when in the fire suppression configuration. The smoke was
observed entering the passenger cabin, during steady state cruise and descent conditions, in quantities
significantly higher than amounts found acceptable during previous certification tests. Small amounts of smoke
were also observed in the flight deck. Accomplishment of this service bulletin will prevent smoke from entering
the passenger cabin and flight deck during a cargo compartment fire.
This change will add relays and diodes to the J24 Junction Box Assembly and change the wiring. This change
will also change the J22 Junction Box Assembly wiring and airplane wiring.
Boeing Service Related Problem (SRP) 737-SRP-26-0051, 737NG-SRP-26-0088 is related to this service
bulletin.
As a part of a service bulletin validation program, this change was completed on airplane YB307 by Service
Bulletin 737-26-1122 Validation Copy 1 before the release of Revision 1 of this service bulletin. The change
completed on airplane YB307 by Service Bulletin 737-26-1122 Original Issue is equivalent to the release of
Revision 1 of this service bulletin. Airplane YB307 has the configuration of Group 11 airplanes.
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
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ReferenceAffectedPlanning Data
Paragraph 1.E., Compliance and Paragraph
1.F., Approval
YesAD Related
Paragraph 1.H., Weight and Balance ChangesYesWeight and Balance Change
Paragraph 1.I., Electrical Load DataYesElectrical 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)
Paragraph 2.C.1., Kits/PartsYesKits/Parts Required
Paragraph 2.C.2., Parts and Materials Supplied
by the Operator
YesOperator Supplied Parts/Material
Paragraph 2.F., Special Tooling Necessary to
do this Service Bulletin
NoSpecial Tooling Required
ACTION (PRR 38275-72S)
Remove the J22 Junction Box Assembly from the airplane. Remove the relays and wire bundle W0076 from
the J22 Junction Box assembly. Change the connector hole sizes and wire bundle W0076. Install the relays and
changed wire bundle W0076 into the changed J22 Junction Box Assembly.
Remove the J24 Junction Box Assembly from the airplane. Remove the relays and wire bundle W0080 from
the J24 Junction Box Assembly. Change wire bundle W0080 and install markers in the new J24 Junction Box
Assembly.
Change wire bundles W2110, W2508, W5100, W5110, W5156, W5158, W5510, W6210 and W6510.
Install the J22 Junction Box Assembly and the J24 Junction Box Assembly.
Do a functional test of the E/E Equipment Cooling System.
EFFECTIVITY
737-600/-700/-800 Airplanes. Refer to Paragraph 1.A., Effectivity, for the list of affected airplanes.
COMPLIANCE
Federal Aviation Administration (FAA) Airworthiness Directive AD 2016-04-06 is related to this service bulletin.
The effective date of AD 2016-04-06 is April 1, 2016.
The Federal Aviation Administration (FAA) will possibly release an additional Airworthiness Directive related to
this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service
bulletin mandatory.
Group 1-12:
Boeing recommends that the change given in this service bulletin be done within 51 months after the effective
date of AD 2016-04-06.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
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Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
10 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 11

Group 13:
Boeing recommends that the change given in this service bulletin be done within 51 months after the R03 issue
date of SB 737-26A1122.
INDUSTRY SUPPORT INFORMATION
Boeing warranty remedies are available for airplanes in warranty as of October 27, 2000. Please refer to
Paragraph 2.B., Industry Support Information.
MANPOWER
Elapsed HoursTotal Task HoursAirplanes
61.30101.35Group 1, 6
62.45103.60Group 2, 7
61.00102.15Group 3
61.75101.75Group 4, 8
62.00103.15Group 5 (Configuration 2)
63.15104.30Group 9-10
62.40103.55Group 5 (Configuration 1), 11,
12, 13
MATERIAL INFORMATION
Boeing Supplied Kits/Parts.
Refer to Paragraph 2.A., Material - Price and Availability.
Operators are encouraged to complete the survey provided in APPENDIX B of this service bulletin to help Boeing
predict the quantity and timing of the Boeing Supplied Kits/Parts.
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BOEING SERVICE BULLETIN 737-26A1122
ALERT  ALERT
CHANGE WIRE
BUNDLE W2508  CHANGE WIRE
BUNDLE W6210
CHANGE WIRE BUNDLE
W5156 AND W6510
CHANGE WIRE
BUNDLE W5156
CHANGE WIRE BUNDLE
W2110 AND W5110
CHANGE THE J24  CHANGE THE J22
JUNCTION BOX ASSEMBLY  JUNCTION BOX ASSEMBLY
AND WIRE BUNDLE WO080  AND WIRE BUNDLE WOO76
CHANGE WIRE BUNDLE
W5100, W5158 AND W5510
1376069
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### Page 13

Commercial 
Airplanes
737
Service Bulletin
ALERT
Number: 737-26A1122
Original Issue:
December 13, 2007
Revision 3: January 31, 2020
ATA System: 2616
SUBJECT: FIRE PROTECTION - Lower Cargo Compartment Smoke Detection - Forward Cargo
Compartment Smoke Penetration Electrical Changes
THIS DOCUMENT 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 DOCUMENT
TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE
NEW OWNER.
1.    PLANNING INFORMATION
A.
Effectivity
1. Airplanes
This bulletin is applicable to 737-600, 737-700, 737-800 Airplane(s), line number(s) 1-495, 497-567,
569-595, 597-650, 652-682, 684-741, 743-773, 775-801, 803-819, 821-837, 839-856, 858-865,
867-883, 885-892, 894-901, 903-910, 912-923, 926-942, 944-950, 952-958, 960-961, 963-977,
979-980, 982-998, 1000-1003, 1005-1020, 1022-1025, 1027-1051, 1053-1068, 1070-1081,
1083-1111, 1113-1161, 1163-1173, 1175-1187, 1189, 1191-1207, 1209-1217, 1219-1295,
1297-1313, 1315-1319, 1321-1325, 1327-1331, 1333-1337, 1339-1343, 1345-1349, 1351-1379,
1381-1415, 1417-1453, 1455-1493, 1495-1497, 1499-1511, 1513-1535, 1537-1547, 1549-1603,
1605-1619, 1621-1700 in 13 Group(s). Where the effectivity is presented with hyphens between
line numbers, the airplane applicability means "through" and "inclusive", e.g. line numbers 1-9
means line numbers 1 through 9 inclusive.
Refer to Service Bulletin Index D6-19567 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 38275-72S for data about this change.
DESCRIPTIONCONFIGURATIONGROUP
737-700 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 1
737-700 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 2
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### Page 14

DESCRIPTIONCONFIGURATIONGROUP
737-800 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 3
737-700 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 4
737-600/-700 airplanes with different J22 and J24 junction box
assemblies and test procedure.
- 5
Boeing Service Bulletin 737-21-1154 Revision 3 not incorporated.1
Boeing Service Bulletin 737-21-1154 Revision 3 incorporated.2
737-800 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 6
737-800 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 7
737-800 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 8
737-700 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 9
737-800 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 10
737-600/-700 airplanes with different J22 and J24 junction box
assemblies and test procedure.
- 11
737-800 airplanes with different J22 and J24 junction box assemblies
and test procedure.
- 12
737-700 Line Numbers 481, 545, 684, 979, 1089, 1211, and 1223.- 13
Airplane Models:
737-600, 737-700, 737-800
GroupVariable Number
4YA001 - YA008
1YA009 - YA019
11YA020 - YA099
11YA101 - YA199
4YA201 - YA202
GroupVariable Number
11YA203 - YA211
11YA221
4YA231 - YA235
1YA236 - YA240
11YA241 - YA242
GroupVariable Number
4YA251
1YA252
11YA253 - YA256
1YA271 - YA272
2YA291
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GroupVariable Number
4YA301
5YA302
1YA311
11YA312 - YA314
11YA321 - YA323
11YA336 - YA345
11YA351
11YA356 - YA357
11YA366 - YA367
11YA371 - YA377
1YA501 - YA507
11YA508 - YA513
1YA514 - YA536
11YA541 - YA552
11YA571 - YA578
11YA601 - YA608
5YA609
11YA610 - YA615
5YA621 - YA622
11YA626 - YA629
5YA630
11YA631
11YA635 - YA636
11YA641 - YA642
11YA645 - YA650
11YA656 - YA659
11YA666 - YA667
11YA671 - YA672
11YA681 - YA691
1YA701 - YA703
11YA704 - YA710
11YA721 - YA722
11YA731 - YA733
GroupVariable Number
5YA734
1YA751 - YA752
11YA753
5YA754
11YA755 - YA756
11YA801 - YA803
11YA809
11YA811 - YA814
11YA831 - YA834
9YA835
11YA841 - YA862
11YA881 - YA882
11YA891 - YA892
11YA961 - YA966
1YA967 - YA976
11YB001 - YB006
11YB101 - YB132
5YB151 - YB153
11YB156 - YB157
11YB161 - YB164
11YB171 - YB172
5YB181 - YB184
11YB201 - YB205
1YB206
11YB207 - YB208
11YB271
11YB276
11YB301 - YB310
11YB371 - YB380
11YB501 - YB502
11YB521 - YB525
11YB541 - YB544
11YB551
GroupVariable Number
11YB561 - YB573
11YB581 - YB586
11YB601 - YB629
11YB631 - YB632
5YB651
11YB656
11YB851 - YB859
11YB861 - YB863
11YB871 - YB873
11YB881 - YB888
11YB901 - YB903
11YB911
8YC001 - YC003
12YC004 - YC030
12YC051 - YC083
12YC091 - YC094
12YC101 - YC104
12YC111 - YC113
12YC121
12YC126 - YC127
12YC136 - YC141
12YC146 - YC147
12YC151 - YC156
12YC166 - YC171
12YC176 - YC178
12YC186 - YC189
12YC201 - YC203
12YC206 - YC207
6YC301 - YC302
12YC303
10YC304 - YC305
6YC321 - YC381
12YC382 - YC385
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GroupVariable Number
12YC391 - YC394
12YC396
12YC401 - YC417
12YC421 - YC422
12YC426 - YC428
12YC436 - YC437
12YC441 - YC448
12YC451 - YC455
12YC459
12YC461 - YC467
12YC471 - YC499
6YC501 - YC502
12YC503 - YC526
12YC571 - YC583
12YC587 - YC589
12YC591 - YC593
12YC601 - YC655
12YC681 - YC696
12YC701 - YC715
12YC720 - YC725
12YC727 - YC741
12YC751 - YC752
12YC761 - YC770
3YC781 - YC793
12YC801 - YC892
12YC901 - YC907
12YC921 - YC922
7YC931 - YC932
12YC941 - YC951
12YC971 - YC978
12YC981 - YC983
12YD001 - YD007
12YD021 - YD025
GroupVariable Number
12YD041 - YD057
12YD081 - YD084
12YD101 - YD107
12YD121 - YD126
12YD151 - YD159
12YD171 - YD172
12YD201 - YD203
12YD206 - YD209
12YD216 - YD218
6YD219
12YD251 - YD254
12YD256 - YD257
12YD261
12YD301 - YD334
12YD391
12YD401 - YD410
12YD412
12YD481 - YD485
11YE001 - YE020
11YE051
11YE101 - YE109
11YE151 - YE157
11YE171 - YE172
11YE201 - YE206
5YE301 - YE305
11YE321 - YE326
11YG001 - YG043
13YG044
11YG061 - YG064
11YG066
13YG067
11YG068
13YG069
GroupVariable Number
11YG070 - YG071
1YG072
11YG073
13YG074
1YG075
11YG076 - YG080
13YG081
11YG082 - YG083
13YG084
11YG085 - YG087
13YG088
1YG089
1YG201
1YG211
12YJ001 - YJ004
12YJ011 - YJ013
12YJ021
12YJ471 - YJ480
6YJ501 - YJ517
6YJ531 - YJ545
6YJ591 - YJ593
12YJ631 - YJ632
12YJ671 - YJ682
12YJ801 - YJ853
12YJ861 - YJ867
12YJ871
6YJ901 - YJ902
12YJ911 - YJ919
12YJ931 - YJ936
12YJ941 - YJ943
6YK001 - YK007
12YK101 - YK104
12YK111 - YK112
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GroupVariable Number
12YK121 - YK122
12YK131 - YK132
12YK136
10YK301 - YK304
12YK321 - YK330
GroupVariable Number
6YK361 - YK364
12YK401 - YK405
12YK426
12YK431
12YK456 - YK458
GroupVariable Number
12YK480
11YM101
11YM201 - YM202
11YM251 - YM259
--
2.
Spares Affected
None.
B. Concurrent Requirements
The service bulletins listed below must be done before or at the same time as this service bulletin:
DescriptionService BulletinCompany
Installs sealing provisions for cargo compart-
ment smoke containment.
737-26-1121 Original Issue, Revision 1,
Revision 2 or Revision 3
Boeing
Changes the J20 Junction Box Assembly
and the cabin pressure control system to
have 750 fpm cabin rate of descent only
during a cargo smoke event.
737-21-1135 Original Issue, Revision 1 or
Revision 2
Boeing
OR
Pin selectable wiring change to always have
750 fpm cabin rate of descent.
737-21-1163 Original Issue, Revision 1 or
Revision 2
C.
Reason
This service bulletin gives instructions to change the Environment Control System (ECS) to turn off the
E/E Cooling Exhaust fans and open the Overboard Exhaust Valve (OEV) if a fire is detected in the
forward cargo compartment. During a simulated fire test in the forward cargo compartment on 737-800
airplanes, smoke penetrated into the passenger cabin and flight deck when in the fire suppression
configuration. The smoke was observed entering the passenger cabin, during steady state cruise and
descent conditions, in quantities significantly higher than amounts found acceptable during previous
certification tests. Small amounts of smoke were also observed in the flight deck. Accomplishment of
this service bulletin will prevent smoke from entering the passenger cabin and flight deck during a cargo
compartment fire.
This change will add relays and diodes to the J24 Junction Box Assembly and change the wiring. This
change will also change the J22 Junction Box Assembly wiring and airplane wiring.
Boeing Service Related Problem (SRP) 737-SRP-26-0051, 737NG-SRP-26-0088 is related to this
service bulletin.
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As a part of a service bulletin validation program, this change was completed on airplane YB307 by
Service Bulletin 737-26-1122 Validation Copy 1 before the release of Revision 1 of this service bulletin.
The change completed on airplane YB307 by Service Bulletin 737-26-1122 Original Issue is equivalent
to the release of Revision 1 of this service bulletin. Airplane YB307 has the configuration of Group 11
airplanes.
Revision 1: Sent to notify operators of the changes that follow:
1.
The top kit 012A0057-5 replaced the top kit 012A0057-1 for operators that have not got the top
kit 012A0057-1.
2. Added supplemental wire kit 280A3122-2 to be used with the top kit 012A0057-1 for operators
that have already got the 012A0057-1 top kit. The wire kit 280A3122-2 plus the 012A0057-1 is
equivalent to the 012A0057-5 top kit.
3. The top kits 012A0057-6 and 012A0057-7 replaced the top kits 012A0057-2 and 012A0057-3
respectively.
Revision 2: Sent to increase the lengths of two wires for some airplanes in Groups 1, 4, 5, 6 and 8. A
new top kit 012A0057-8 was created and top kits 012A0057-6 and -7 were replaced with new top kits
012A0057-10 and -11. Also, a new supplemental kit 012A0057-9 was created for operators that have
purchased top kit 012A0057-5, -6 or -7 and have not accomplished this service bulletin. An optional
part number has been added to FIGURE 6. All applicable revision levels of the concurrent requirements
have been added. Airplane YB307 on which this change was completed as part of the service bulletin
validation program has been moved from Group 1 to a new Group 11 of this service bulletin effectivity.
Airplanes YA020-YA099, YA101-YA199, YA203-YA211, YA221, YA241-YA242, YA253-YA256,
YA312-YA314, YA321-YA323, YA336-YA345, YA351, YA356-YA357, YA366-YA367, YA371-YA377,
YA508-YA513, YA541-YA552, YA571-YA578, YA601-YA608, YA610-YA615, YA626-YA629, YA631,
YA635-YA636, YA641-YA642, YA645-YA650, YA656-YA659, YA666-YA667, YA671-YA672,
YA681-YA691, YA704-YA710, YA721-YA722, YA731-YA733, YA753, YA755-YA756, YA801-YA803,
YA809, YA811-YA814, YA831-YA834, YA841-YA862, YA881-YA882, YA891- YA892, YA961-YA966,
YB001-YB006, YB101-YB132, YB156-YB157, YB161- YB164, YB171-YB172, YB201-YB205,
YB207-YB208, YB271, YB276, YB301-YB310, YB371-YB380, YB501-YB502, YB521-YB525,
YB541-YB544, YB551, YB561-YB573, YB581-YB586, YB601-YB629, YB631-YB632, YB656,
YB851-YB859, YB861-YB863, YB871-YB873, YB881-YB888, YB901-YB903, YB911, YE001-YE020,
YE051, YE101-YE109, YE151-YE157, YE171-YE172, YE201-YE206, YE321-YE326, YG001-YG043,
YG061-YG064, YG066, YG068, YG070-YG071, YG073, YG076-YG080, YG082-YG083, YG085-YG087,
YM101, YM201-YM202, YM251-YM259 were moved from Group 1 to a new Group 11 of this service
bulletin effectivity.
Airplanes YC004-YC030, YC051-YC083, YC091-YC094, YC101-YC104, YC111-YC113, YC121,
YC126-YC127, YC136-YC141, YC146-YC147, YC151-YC156, YC166-YC171, YC176-YC178, YC186-
YC189, YC201-YC203, YC206-YC207, YC303, YC382-YC385, YC391-YC394, YC396,YC401-YC417,
YC421-YC422, YC426-YC428, YC436-YC437, YC441-YC448, YC451-YC455, YC459, YC461-YC467,
YC471-YC499, YC503-YC526, YC571-YC583, YC587-YC589, YC591-YC593, YC601-YC655,
YC681-YC696, YC701-YC715, YC720-YC725, YC727-YC741, YC751-YC752, YC761-YC770,
YC801-YC892, YC901-YC907, YC921-YC922, YC941-YC951, YC971-YC978, YC981-YC983,
YD001-YD007, YD021-YD025, YD041-YD057, YD081-YD084, YD101-YD107, YD121-YD126,
YD151-YD159, YD171-YD172, YD201-YD203, YD206-YD209, YD216-YD218, YD251-YD254,
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YD256-YD257, YD261, YD301-YD334, YD391, YD401-YD410, YD412, YD481-YD485, YJ001-YJ004,
YJ011-YJ013, YJ021, YJ471-YJ480, YJ631-YJ632, YJ671-YJ682, YJ801-YJ853, YJ861-YJ867, YJ871,
YJ911-YJ919, YJ931-YJ936, YJ941-YJ943, YK101-YK104, YK111-YK112, YK121-YK122,
YK131-YK132, YK136, YK321-K330, YK401-YK405, YK426, YK431, YK456-YK458, YK480 were
moved from Group 6 to a new Group 12 of this service bulletin effectivity.
Terminology has been changed in the Work Instructions to agree with the terminology defined in
Paragraph 3.A., General Information - Notes.
Revision 3: Sent to add airplanes YG044, YG067, YG069, YG074, YG081, YG084 and YG088 to the
effectivity of this service bulletin. Also, this revision adds new wire kits to increase the length of one
wire, add optional part numbers for some connector identification tapes and filler rods, correct wire
bundle W6210 routing data and correct wire bundle W5510 terminal block and splice data. A new
Appendix is added to give a list of tests that can be used to function test the systems that may have
been disturbed by the work done on the J22 and J24 junction boxes.
The data given in Alternative Method of Compliance Notice 737-26-1122 AMOC 01 is included in this
revision.
D.
Description
Remove the J22 Junction Box Assembly from the airplane. Remove the relays and wire bundle W0076
from the J22 Junction Box assembly. Change the connector hole sizes and wire bundle W0076. Install
the relays and changed wire bundle W0076 into the changed J22 Junction Box Assembly.
Remove the J24 Junction Box Assembly from the airplane. Remove the relays and wire bundle W0080
from the J24 Junction Box Assembly. Change wire bundle W0080 and install markers in the new J24
Junction Box Assembly.
Change wire bundles W2110, W2508, W5100, W5110, W5156, W5158, W5510, W6210 and W6510.
Install the J22 Junction Box Assembly and the J24 Junction Box Assembly.
Do a functional test of the E/E Equipment Cooling System.
Effects of this Revision on airplanes on which Original Issue, Revision 1 or Revision 2 was previously
done:
None.
The work in this service bulletin is done in the maintenance zone(s) given below.
Group 1-2, 4, 9, 13:
Affected Maintenance Zones
ZoneModel
117, 118, 211, 212737-700
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Group 3, 6-8, 10, 12:
Affected Maintenance Zones
ZoneModel
117, 118, 211, 212737-800
Group 5, 11:
Affected Maintenance Zones
ZoneModel
117, 118, 211, 212737-600, 737-700
E.
Compliance
Federal Aviation Administration (FAA) Airworthiness Directive AD 2016-04-06 is related to this service
bulletin. The effective date of AD 2016-04-06 is April 1, 2016.
The Federal Aviation Administration (FAA) will possibly release an additional Airworthiness Directive
related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times
given in this service bulletin mandatory.
Group 1-12:
Boeing recommends that the change given in this service bulletin be done within 51 months after the
effective date of AD 2016-04-06.
Group 13:
Boeing recommends that the change given in this service bulletin be done within 51 months after the
R03 issue date of SB 737-26A1122.
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.
This service bulletin is also approved for airplanes having FAA Aviation Partners Boeing (APB)
Supplemental Type Certificate (STC) number ST00830SE installed (not including any areas affected
by the split scimitar winglet configuration).
For BBJ models that have APB winglets installed by STC number ST00830SE, the operator is
responsible for obtaining appropriate regulatory agency approval before incorporating this service
bulletin if the bulletin is in the area affected by blended winglets.
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.
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In addition, the Manager of the FAA Seattle ACO Branch approves accomplishment of the change
defined in this service bulletin revision as an alternative method of compliance to the applicable
requirements of paragraph (h) of AD 2016-04-06. All provisions of AD 2016-04-06 that are not specifically
referenced in the above statement remain fully applicable and must be complied with accordingly.
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, 6:
Elapsed HoursTask-HoursNumber of
Persons
Task
2.004.002Open Access
1.001.001FIGURE 1
4.004.001FIGURE 2
1.001.001FIGURE 3
1.302.602FIGURE 5 and FIGURE 6
4.004.001FIGURE 7
0.750.751FIGURE 8
3.003.001FIGURE 9
15.4030.802FIGURE 11 and FIGURE 13
1.451.451FIGURE 14
3.003.001FIGURE 15
2.605.202FIGURE 22 and FIGURE 23
1.503.002FIGURE 24, FIGURE 25 and
FIGURE 26
3.657.302FIGURE 29, FIGURE 31 and
FIGURE 33
10.6021.202FIGURE 35, FIGURE 37, FIG-
URE 39 and FIGURE 40
1.301.301FIGURE 36 and FIGURE 38
1.001.001FIGURE 41
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Group 1, 6:
Elapsed HoursTask-HoursNumber of
Persons
Task
0.750.751FIGURE 42
2.004.002Close Access
1.002.002Test
61.30101.35TOTAL FOR EACH AIRPLANE
Group 2, 7:
Elapsed HoursTask-HoursNumber of
Persons
Task
2.004.002Open Access
1.001.001FIGURE 1
4.004.001FIGURE 2
1.001.001FIGURE 3
1.302.602FIGURE 5 and FIGURE 6
4.004.001FIGURE 7
0.750.751FIGURE 8
3.003.001FIGURE 10
15.4030.802FIGURE 11 and FIGURE 13
1.501.501FIGURE 16
3.003.001FIGURE 17
2.605.202FIGURE 22 and FIGURE 23
1.503.002FIGURE 24, FIGURE 25 and
FIGURE 26
4.759.502FIGURE 29, FIGURE 43 and
FIGURE 33
10.6021.202FIGURE 35, FIGURE 37, FIG-
URE 39 and FIGURE 40
1.301.301FIGURE 36 and FIGURE 38
1.001.001FIGURE 41
0.750.751FIGURE 42
2.004.002Close Access
1.002.002Test
62.45103.60TOTAL FOR EACH AIRPLANE
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
22 of 227
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ALERTALERT

### Page 23

Group 3:
Elapsed HoursTask-HoursNumber of
Persons
Task
2.004.002Open Access
1.001.001FIGURE 1
4.004.001FIGURE 2
1.001.001FIGURE 3
1.302.602FIGURE 5 and FIGURE 6
4.004.001FIGURE 7
0.750.751FIGURE 8
3.003.001FIGURE 9
15.4030.802FIGURE 12 and FIGURE 13
2.302.301FIGURE 18
0.750.751FIGURE 19
2.605.202FIGURE 22 and FIGURE 23
1.503.002FIGURE 24, FIGURE 25 and
FIGURE 26
4.759.502FIGURE 29, FIGURE 43 and
FIGURE 33
10.6021.202FIGURE 35, FIGURE 37, FIG-
URE 39 and FIGURE 40
1.301.301FIGURE 36 and FIGURE 38
1.001.001FIGURE 41
0.750.751FIGURE 42
2.004.002Close Access
1.002.002Test
61.00102.15TOTAL FOR EACH AIRPLANE
Group 4, 8:
Elapsed HoursTask-HoursNumber of
Persons
Task
2.004.002Open Access
1.001.001FIGURE 1
4.004.001FIGURE 2
1.001.001FIGURE 3
1.302.602FIGURE 5 and FIGURE 6
4.004.001FIGURE 7
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
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ALERTALERT

### Page 24

Group 4, 8:
Elapsed HoursTask-HoursNumber of
Persons
Task
0.750.751FIGURE 8
3.003.001FIGURE 9
15.4030.802FIGURE 11 and FIGURE 13
1.451.451FIGURE 14
3.003.001FIGURE 15
2.605.202FIGURE 22 and FIGURE 23
0.500.501FIGURE 27 and FIGURE 28
5.1010.202FIGURE 30, FIGURE 31, FIG-
URE 32 and FIGURE 34
10.6021.202FIGURE 35, FIGURE 37, FIG-
URE 39 and FIGURE 40
1.301.301FIGURE 36 and FIGURE 38
1.001.001FIGURE 41
0.750.751FIGURE 42
2.004.002Close Access
1.002.002Test
61.75101.75TOTAL FOR EACH AIRPLANE
Group 5, Configuration 1; Group 11-13:
Elapsed HoursTask-HoursNumber of
Persons
Task
2.004.002Open Access
1.001.001FIGURE 1
4.004.001FIGURE 2
1.001.001FIGURE 3
1.302.602FIGURE 5 and FIGURE 6
4.004.001FIGURE 7
0.750.751FIGURE 8
3.003.001FIGURE 9
15.4030.802FIGURE 11 and FIGURE 13
1.451.451FIGURE 14
3.003.001FIGURE 15
2.605.202FIGURE 22 and FIGURE 23
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
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ALERTALERT

### Page 25

Group 5, Configuration 1; Group 11-13:
Elapsed HoursTask-HoursNumber of
Persons
Task
1.503.002FIGURE 24, FIGURE 25 and
FIGURE 26
4.759.502FIGURE 29, FIGURE 43 and
FIGURE 33
10.6021.202FIGURE 35, FIGURE 37, FIG-
URE 39 and FIGURE 40
1.301.301FIGURE 36 and FIGURE 38
1.001.001FIGURE 41
0.750.751FIGURE 42
2.004.002Close Access
1.002.002Test
62.40103.55TOTAL FOR EACH AIRPLANE
Group 5, Configuration 2:
Elapsed HoursTask-HoursNumber of
Persons
Task
2.004.002Open Access
1.001.001FIGURE 1
4.004.001FIGURE 2
0.600.601FIGURE 4
1.302.602FIGURE 5 and FIGURE 6
4.004.001FIGURE 7
0.750.751FIGURE 8
3.003.001FIGURE 9
15.4030.802FIGURE 11 and FIGURE 13
1.451.451FIGURE 14
3.003.001FIGURE 15
2.605.202FIGURE 22 and FIGURE 23
1.503.002FIGURE 24, FIGURE 25 and
FIGURE 26
4.759.502FIGURE 29, FIGURE 43 and
FIGURE 33
10.6021.202FIGURE 35, FIGURE 37, FIG-
URE 39 and FIGURE 40
1.301.301FIGURE 36 and FIGURE 38
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
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ALERTALERT

### Page 26

Group 5, Configuration 2:
Elapsed HoursTask-HoursNumber of
Persons
Task
1.001.001FIGURE 41
0.750.751FIGURE 42
2.004.002Close Access
1.002.002Test
62.00103.15TOTAL FOR EACH AIRPLANE
Group 9-10:
Elapsed HoursTask-HoursNumber of
Persons
Task
2.004.002Open Access
1.001.001FIGURE 1
4.004.001FIGURE 2
1.001.001FIGURE 3
1.302.602FIGURE 5 and FIGURE 6
4.004.001FIGURE 7
0.750.751FIGURE 8
3.003.001FIGURE 10
15.4030.802FIGURE 11 and FIGURE 13
2.202.201FIGURE 20
3.003.001FIGURE 21
2.605.202FIGURE 22 and FIGURE 23
1.503.002FIGURE 24, FIGURE 25 and
FIGURE 26
4.759.502FIGURE 29, FIGURE 43 and
FIGURE 33
10.6021.202FIGURE 35, FIGURE 37, FIG-
URE 39 and FIGURE 40
1.301.301FIGURE 36 and FIGURE 38
1.001.001FIGURE 41
0.750.751FIGURE 42
2.004.002Close Access
1.002.002Test
63.15104.30TOTAL FOR EACH AIRPLANE
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
26 of 227
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ALERTALERT

### Page 27

This estimate does not include the task hour data given in the service bulletins in Paragraph 1.B.,
Concurrent Requirements.
H.
Weight and Balance Changes
Change in Moment
(Pound-Inches)
Change in Weight (Pounds)Airplanes
+638.3+2.6737-600
+497.0+2.6737-700
+188.4+2.6737-800
I.
Electrical Load Data
1. Direct Current (DC) Loads:
Circuit BreakerBusAmperes
C144428V DC Battery Bus Section 20.016 Amps
2.
Type
Continuous.
J. References
1. Existing Data:
a. Engineering Change Memo PRR 38275-72S
b. Boeing Service Bulletin 737-21-1135, 737-21-1154,737-21-1163, 737-26-1121
c. Boeing Service Related Problem (SRP) 737-SRP-26-0051, 737NG-SRP-26-0088
d. Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2016-04-06
e. Service Bulletin Index D6-19567
f. Standard Overhaul Practices Manual (SOPM) 20-43-03, 20-50-01, 20-50-05, 20-50-10
g. Standard Wiring Practices Manual (SWPM) 20-10-11, 20-10-12, 20-10-15, 20-10-19, 20-19-15,
20-20-00, 20-25-12, 20-30-12, 20-61-11, 20-74-11, 20-81-12, 20-81-19, 20-81-22, 20-90-15
h. 737-600/700/800/900 Aircraft Maintenance Manual (AMM) 06-41-00, 21-25-00, 21-27-00,
21-27-02, 21-27-04, 21-31-00, 21-45-00, 21-51-00, 21-51-02, 21-61-00, 21-61-10, 21-61-14,
23-11-00, 23-28-11, 23-32-00, 23-32-02, 23-71-00, 24-22-00, 24-31-11, 24-51-11, 25-52-09,
25-52-16, 26-23-00, 26-23-01, 27-62-00, 29-22-00, 30-11-00, 31-31-00, 31-31-11, 31-31-22,
31-31-24, 31-51-00, 32-09-00, 32-09-02, 32-09-10, 32-41-00, 32-42-00, 32-61-00, 34-42-00,
34-43-00, 34-46-00, 38-42-00, 47-00-00, 52-22-00, 52-31-00, 52-71-00, 73-21-12, 74-00-00,
78-31-00
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
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BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 28

i. 737-600/700/800/900 Wiring Diagram Manual (WDM) 21-25-11, 21-27-21, 21-27-31, 21-43-21,
31-31-15
2.
Data Supplied with this Service Bulletin:
None.
3. Installation Drawings Used in the Preparation of this Service Bulletin:
TitleDrawing Number
JUNCTION BOX ASSY - J22284A1222
JUNCTION BOX ASSY - J24284A1224
WIRE BUNDLE INSTL RIGHT LOWER SIDEWALL288A4120
WIRE BUNDLE INSTL - RIGHT SIDEWALL E/E BAY288A4121
WIRE BUNDLE INSTL - FORWARD WHEEL WELL288A4130
WIRE BUNDLE INSTL - LEFT E/E BAY SIDEWALL288A4131
WIRE BUNDLE INSTL RIGHT SIDE CAB FLOOR BEAMS288A4140
WIRE BUNDLE INSTL E/E FLOOR BEAMS LEFT SIDE288A4141
WIRE BUNDLE INSTL - TRANSVERSE RACK288A4360
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.
K.
Publications Affected
1. Publications:
Chapter-SectionPublication
21-27, 32-09737 Aircraft Maintenance Manual - System
Description Section
21-27737 Aircraft Maintenance Manual - Practices
and Procedures
21-25, 21-27, 21-43, 21-92, 26-16,
31-31, 32-31
737 Wiring Diagram Manual
21-27737 Fault Isolation Manual
21-25, 21-27, 21-43, 23-24, 23-27,
25-50, 26-22, 31-31, 32-09, 32-42,
32-44, 34-40, 52-71, 73-20, 76-11,
78-30
737 Illustrated Parts Catalog
21-25, 21-27, 21-43, 26-16, 32-09737 System Schematic Manual
2.
Damage Tolerance Based Structural Inspections:
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
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BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 29

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.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
29 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 30

Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
30 of 227
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ALERTALERT
BLANK PAGE

### Page 31

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/parts 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, 4, 6, 8:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
QTYDateNameKit Number
11,080.003005Sept 26, 2016TOP KIT - FORWARD
CARGO SMOKE PEN-
ETRATION
012A0057-5 (a)
(a) The top kit 012A0057-5 replaced top kit 012A0057-1 for operators that have never ordered top kit 012A0057-
1.
Group 2, 7, 9-10:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
QTYDateNameKit Number
11,080.003005Sept 26, 2016TOP KIT - FORWARD
CARGO SMOKE PEN-
ETRATION
012A0057-6 (a)(b)
(a)
The top kit 012A0057-6 replaced the top kit 012A0057-2.
(b) The top kit 012A0057-6 is no longer available and has been replaced by the -10.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
31 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 32

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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
QTYDateNameKit Number
11,080.003005Sept 26, 2016TOP KIT - FORWARD
CARGO SMOKE PEN-
ETRATION
012A0057-7 (a)(b)
(a)
The top kit 012A0057-7 replaced the top kit 012A0057-3.
(b) The top kit 00120057-7 is no longer available and has been replaced by the -11.
Group 1, 4, 6, 8:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
QTYDateNameKit Number
300.0019010Oct 30, 2008WIRE KIT - FORWARD
CARGO SMOKE PEN-
ETRATION - PROCE-
DURAL AND SYS-
TEMS
280A3122-2 (a)
(a) The 280A3122-2 is a supplemental kit for the 012A0057-1 Top Kit. The 280A3122-2 plus the 012A0057-
1 is equivalent to the 012A0057-5 top kit.
Group 5, 11-13:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
QTYDateNameKit Number
11,080.0030010Sept 26, 2016TOP KIT - FORWARD
CARGO SMOKE PEN-
ETRATION
012A0057-8
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
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BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 33

Group 2, 7, 9-10:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
QTYDateNameKit Number
11,080.00300-Sept 26, 2016TOP KIT - FORWARD
CARGO SMOKE PEN-
ETRATION
012A0057-10 (a)
(a)
The top kit 012A0057-10 replaced the top kit 012A0057-6.
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
QTYDateNameKit Number
11,080.00300-Sept 26, 2016TOP KIT - FORWARD
CARGO SMOKE PEN-
ETRATION
012A0057-11 (a)
(a)
The top kit 012A0057-11 replaced the top kit 012A0057-7.
Group 2-3, 5, 7, 9-13:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
QTYDateNameKit Number
140.0030010Sept 26, 2016SUPPLEMENTAL KIT
- FORWARD CARGO
SMOKE PENETRA-
TION
012A0057-9 (a)(b)
(a)
Operators who have already purchased top kit 012A0057-5, 012A0057-6 or 012A0057-7 and have not
done this service bulletin need to order this supplemental kit 012A0057-9.
(b) This supplemental kit contains longer wires W5100-0012-22 and W5100-0013-22.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
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BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 34

Group 1, 4, 6, 8:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NamePart Number
87.00180ASSY - W6210280A3122-119 (a)
(a)
Operators that have not purchased top kit 012A0057-5 and have not accomplished this service bulletin
need to purchase the top kit 012A0057-5 and wire assy 280A3122-119.
Group 1, 4, 6, 8:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NameKit Number
110.00180WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES
280A3122-8 (a)
(a)
Operators that have purchased top kit 012A0057-5 need to purchase wire kit 280A3122-8.
Group 5, 11-13:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NamePart Number
87.00180ASSY - W6210280A3122-119 (a)
(a)
Operators that have not purchased top kit 012A0057-8 and have not accomplished this service bulletin
need to purchase the top kit 012A0057-8 and wire assy 280A3122-119.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
34 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 35

Group 5, 11-13:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NameKit Number
110.00180WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES
280A3122-8 (a)
(a)
Operators that have purchased top kit 012A0057-8 need to purchase wire kit 280A3122-8.
Group 2, 7, 9-10:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NamePart Number
87.00180ASSY - W6210280A3122-119 (a)
(a)
Operators that have not purchased top kit 012A0057-10 and have not accomplished this service bulletin
need to purchase the top kit 012A0057-10 and wire assy 280A3122-119.
Group 2, 7, 9-10:
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NameKit Number
110.00180WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES
280A3122-8 (a)
(a)
Operators that have purchased top kit 012A0057-10 need to purchase wire kit 280A3122-8.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
35 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 36

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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NamePart Number
87.00180ASSY - W6210280A3122-119 (a)
(a)
Operators that have not purchased top kit 012A0057-11 and have not accomplished this service bulletin
need to purchase the top kit 012A0057-11 and wire assy 280A3122-119.
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NameKit Number
110.00180WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES
280A3122-8 (a)
(a)
Operators that have purchased top kit 012A0057-11 need to purchase wire kit 280A3122-8.
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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NameKit Number
87.00180ASSY - W6210280A3122-119 (a)(b)
(a)
This wire kit contains longer wire W6210-5511-22.
(b) Wire list 280A3122-119W replaces wire list 280A3122-110W.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
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ALERTALERT

### Page 37

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 Price as of
the Revision 3
date of this Ser-
vice Bulletin (US
Dollars)
ROLT as of the
Revision 3 date of
this Service Bul-
letin (Calendar
Days)
NameKit Number
87.00190ASSY - W6210280A3122-120 (a)(b)
(a)
This wire kit contains longer wire W6210-5511-22.
(b) Wire list 280A3122-120W replaces wire list 280A3122-110W.
Operators are encouraged to complete the survey provided in APPENDIX B of this service bulletin to
help Boeing predict the quantity and timing of the Boeing Supplied Kits/Parts.
B. Industry Support Information
Boeing warranty remedies are available for 737 airplanes in warranty as of October 27, 2000. For task
hour reimbursement for airplanes in warranty as of that date, send a warranty claim to BCA Contracts
- Warranty. The kits for airplanes in warranty as of that date will be supplied at no charge. Send a
purchase order for the kits to Boeing Material Management. Please refer to this service bulletin number
and reference the airplane variable number(s) in your purchase order.
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.
Kit 012A0057
NotesExisting Part
Number
NameQTYNew Part Number
-7 -6 -5 -1
TOP KIT - FORWARD CARGO SMOKE
PENETRATION.
. . . -012A0057-1
(a)TOP KIT - FORWARD CARGO SMOKE
PENETRATION.
. . - .012A0057-5
(b)TOP KIT - FORWARD CARGO SMOKE
PENETRATION.
. - . .012A0057-6
(c)TOP KIT - FORWARD CARGO SMOKE
PENETRATION.
- . . .012A0057-7
WIRE KIT - FORWARD CARGO
SMOKE PENETRATION - PROCEDU-
RAL AND SYSTEMS CHANGES
. . . 1280A3122-1
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
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### Page 38

Kit 012A0057
NotesExisting Part
Number
NameQTYNew Part Number
-7 -6 -5 -1
(d)WIRE KIT - FORWARD CARGO
SMOKE PENETRATION - PROCEDU-
RAL AND SYSTEMS CHANGES
1 1 1 .280A3122-3
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION.
1 . . .284A9200-119
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION.
. . 1 1284A9200-120
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION.
. 1 . .284A9200-121
KIT - J22 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION.
1 1 1 1284A9200-122
(a)
The top kit 012A0057-5 replaced the top kit 012A0057-1 for operators that have not got the top kit
012A0057-1.
(b) The top kit 012A0057-6 replaced the top kit 012A0057-2.
(c) The top kit 012A0057-7 replaced the top kit 012A0057-3.
(d) The wire kit 280A3122-3 replaced the wire kit 280A3122-1.
Kit 012A0057
NotesExisting Part
Number
NameQTYNew Part Number
-11 -10 -9 -8
TOP KIT - FORWARD CARGO SMOKE
PENETRATION.
. . . -012A0057-8
SUPPLEMENTAL KIT - FORWARD
CARGO SMOKE PENETRATION
. . - .012A0057-9
TOP KIT - FORWARD CARGO SMOKE
PENETRATION.
. - . .012A0057-10
TOP KIT - FORWARD CARGO SMOKE
PENETRATION.
- . . .012A0057-11
WIRE KIT - FORWARD CARGO
SMOKE PENETRATION - PROCEDU-
RAL AND SYSTEMS CHANGES
1 1 . 1280A3122-4
ASSY - W5100. . 1 .280A3122-118
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
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### Page 39

Kit 012A0057
NotesExisting Part
Number
NameQTYNew Part Number
-11 -10 -9 -8
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION.
1 . . .284A9200-119
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION.
. . . 1284A9200-120
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION.
. 1 . .284A9200-121
KIT - J22 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION.
1 1 . 1284A9200-122
Kit 280A3122
NotesNameQTYNew Part Number
-1 -3 -4 -101 -102 -103
WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES.
- . . . . .280A3122-1
(i)WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES.
. - . . . .280A3122-3
(j)WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES.
. . - . . .280A3122-4
LACING TAPE1 1 1 . . .280A2001-1
ASSY - W00761 1 1 . . .280A3122-101
ASSY - W00801 1 1 . . .280A3122-102
ASSY - W21101 . . . . .280A3122-103
ASSY - W25081 1 1 . . .280A3122-104
ASSY - W51001 . . . . .280A3122-105
ASSY - W51101 1 1 . . .280A3122-106
ASSY - W51561 1 1 . . .280A3122-107
ASSY - W51581 1 1 . . .280A3122-108
ASSY - W55101 1 1 . . .280A3122-109
ASSY - W62101 1 1 . . .280A3122-110
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
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### Page 40

Kit 280A3122
NotesNameQTYNew Part Number
-1 -3 -4 -101 -102 -103
ASSY - W65101 1 1 . . .280A3122-111
ASSY - W02121 1 1 . . .280A3122-112
(j)ASSY - W2110. 1 1 . . .280A3122-115
(j)ASSY - W5100. 1 . . . .280A3122-116
ASSY - W5100. . 1 . . .280A3122-117
ID TAPE - CONNECTOR. . . 1 . .280A3122-10101
ID TAPE - CONNECTOR. . . 1 . .280A3122-10102
(a)FILLER RODS - CONNECTOR. . . 60 . .280A3122-10103
ID TAPE - CONNECTOR. . . . 1 .280A3122-10201
ID TAPE - CONNECTOR. . . . 1 .280A3122-10202
ID TAPE - CONNECTOR. . . . 1 .280A3122-10203
ID TAPE - CONNECTOR. . . . 1 .280A3122-10204
ID TAPE - CONNECTOR. . . . 1 .280A3122-10205
ID TAPE - CONNECTOR. . . . 1 .280A3122-10206
ID TAPE - CONNECTOR. . . . 1 .280A3122-10207
ID TAPE - CONNECTOR. . . . 1 .280A3122-10208
ID TAPE - CONNECTOR. . . . 1 .280A3122-10209
ID TAPE - CONNECTOR. . . . 1 .280A3122-10210
ID TAPE - CONNECTOR. . . . 1 .280A3122-10211
ID TAPE - CONNECTOR. . . . 1 .280A3122-10212
ID TAPE - CONNECTOR. . . . 1 .280A3122-10213
(a)FILLER RODS - CONNECTOR. . . . 30 .280A3122-10214
ID TAPE - WIRE. . . . . 1280A3122-10301
ID TAPE - WIRE. . . . . 1280A3122-10302
ID TAPE - CONNECTOR. . . . . 1280A3122-10303
SLEEVE - SPLICE ID. . . . . 1280A3122-10304
SLEEVE - SPLICE ID. . . . . 1280A3122-10305
(a)CONTACT, PIN. . . 5 13 .BACC47CN1SB
(a)CONTACT, PIN. . . . 3 .BACC47CN2
CONTACT. . . . . 2BACC47CP1S
(a)CONTACT, SOCKET. . . . 28 .BACC47DJ1
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
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### Page 41

Kit 280A3122
NotesNameQTYNew Part Number
-1 -3 -4 -101 -102 -103
(a)CONTACT, SOCKET. . . 5 . .BACC47DJ2
(a)CONTACT, SOCKET. . . . 35 .BACC47ER1
CONNECTOR, ELECTRICAL, PLUG,
STRAIGHT, BAYONET COUPLING, VI-
BRATION RESISTANT
. . . . . 1BACC63CB22-55S8
CONNECTOR, ELECTRICAL, RECEPTA-
CLE, STRAIGHT, BAYONET COUPLING,
VIBRATION RESISTANT
. . . . 1 .BACC63CC22-55P7
CONNECTOR, ELECTRICAL, RECEPTA-
CLE, STRAIGHT, BAYONET COU-
PLING,VIBRATION RESISTANT
. . . 1 . .BACC63CC22-55P8
CONNECTOR, ELECTRICAL, RECEPTA-
CLE, STRAIGHT, BAYONET COU-
PLING,VIBRATION RESISTANT
. . . 1 . .BACC63CC22-55PN
RELAY SOCKET. . . . 3 .BACS16AF1
RELAY SOCKET. . . . 1 .BACS16W1A
SPLICE SEALED CRIMP. . . . . 2D-436-36
TERMINAL MODULE. . . . 3 .S280W555-104
TERMINAL MODULE. . . . 1 .S280W555-108
TERMINAL MODULE. . . . 5 .S280W555-753
(a)CONTACT, PIN, SIZE 16. . . . 4 .S280W555-916
(a)CONTACT, PIN, SIZE 20. . . . 35 .S280W555-920
(b)(h)Wire, W0076-0344-22, length 30 inches. . . 1 . .-
(b)(h)Wire, W0076-0345-22, length 30 inches. . . 1 . .-
(b)(h)Wire, W0076-0346-22, length 30 inches. . . 1 . .-
(b)(h)Wire, W0076-0347-22, length 30 inches. . . 1 . .-
(b)(h)Wire, W0080-5501-22, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5515-24, length 30 inches. . . . 1 .-
(c)(h)Wire, W0080-5526-24, length 36 inches. . . . 1 .-
(b)(h)Wire, W0080-5551-22, length 24 inches. . . . 1 .-
(d)(h)Wire, W0080-5552-20, length 30 inches. . . . 1 .-
(b)(h)Wire, W0080-5553-22, length 24 inches. . . . 1 .-
(b)(h)Wire, W0080-5554-22, length 24 inches. . . . 1 .-
(b)(h)Wire, W0080-5555-22, length 36 inches. . . . 1 .-
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
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ALERTALERT

### Page 42

Kit 280A3122
NotesNameQTYNew Part Number
-1 -3 -4 -101 -102 -103
(b)(h)Wire, W0080-5556-22, length 36 inches. . . . 1 .-
(b)(h)Wire, W0080-5557-22, length 36 inches. . . . 1 .-
(d)(h)Wire, W0080-5558-20, length 30 inches. . . . 1 .-
(b)(h)Wire, W0080-5559-22, length 42 inches. . . . 1 .-
(b)(h)Wire, W0080-5560-22, length 24 inches. . . . 1 .-
(b)(h)Wire, W0080-5561-22, length 24 inches. . . . 1 .-
(b)(h)Wire, W0080-5562-22, length 42 inches. . . . 1 .-
(e)(h)Wire, W0080-5563-24, length 24 inches. . . . 1 .-
(b)(h)Wire, W0080-5564-22, length 36 inches. . . . 1 .-
(f)(h)Wire, W0080-5565-22, length 36 inches. . . . 1 .-
(f)(h)Wire, W0080-5567-22, length 36 inches. . . . 1 .-
(f)(h)Wire, W0080-5568-22, length 36 inches. . . . 1 .-
(f)(h)Wire, W0080-5569-22, length 24 inches. . . . 1 .-
(f)(h)Wire, W0080-5570-22, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5571-24, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5572-24, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5573-24, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5574-24, length 30 inches. . . . 1 .-
(c)(h)Wire, W0080-5575-24, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5576-24, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5577-24, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5578-24, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5601-24, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5602-24, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5603-24, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5604-24, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5605-24, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5606-24, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5607-24, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5608-24, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5609-24, length 36 inches. . . . 1 .-
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
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### Page 43

Kit 280A3122
NotesNameQTYNew Part Number
-1 -3 -4 -101 -102 -103
(c)(h)Wire, W0080-5610-24, length 36 inches. . . . 1 .-
(c)(h)Wire, W0080-5611-24, length 36 inches. . . . 1 .-
(f)(h)Wire, W0080-5612-22, length 24 inches. . . . 1 .-
(g)(h)Wire, W0080-5613-20, length 24 inches. . . . 1 .-
(c)(h)Wire, W0080-5614-24, length 24 inches. . . . 1 .-
(e)(h)Wire, W2110-0007-24, length 240 inches. . . . . 1-
(e)(h)Wire, W2110-0008-24, length 240 inches. . . . . 1-
(a)
There are more parts than are necessary.
(b) BMS 13-48, Type 10, Class 1, AWG 22.
(c) BMS 13-58, Type 5, Class 1, AWG 24.
(d) BMS 13-48, Type 10, Class 1, AWG 20.
(e) BMS 13-48, Type 11, Class 1, AWG 24.
(f) BMS 13-60, Type 44, Class 1, AWG 22.
(g) BMS 13-60, Type 44, Class 1, AWG 20.
(h) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
(i) The wire kit 280A3122-3 replaced the 280A3122-1.
(j) The sub-assemblies 280A3122-115 and 280A3122-116 of the wire kit 280A3122-3 replaced the sub-
assemblies 280A3122-103 and 280A3122-105 of the wire kit 280A3122-1.
Kit 280A3122
NotesNameQTYNew Part Number
-104 -105 -106 -107 -108 -109
ASSY - W2508- . . . . .280A3122-104
ASSY - W5100. - . . . .280A3122-105
ASSY - W5110. . - . . .280A3122-106
ASSY - W5156. . . - . .280A3122-107
ASSY - W5158. . . . - .280A3122-108
ASSY - W5510. . . . . -280A3122-109
SLEEVE - SPLICE ID1 . . . . .280A3122-10401
ID TAPE - CONNECTOR. 1 . . . .280A3122-10501
ID TAPE - CONNECTOR. 1 . . . .280A3122-10502
(a)FILLER RODS - CONNECTOR. 30 . . . .280A3122-10503
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
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### Page 44

Kit 280A3122
NotesNameQTYNew Part Number
-104 -105 -106 -107 -108 -109
(a)FILLER RODS - CONNECTOR. 30 . . . .280A3122-10504
ID TAPE - CONNECTOR. . 1 . . .280A3122-10601
SLEEVE - DEAD-END SHIELD. . . . 1 .280A3122-10801
SLEEVE - SPLICE ID. . . . . 1280A3122-10901
(a)CONTACT, PIN. . 6 . . .BACC47CN1S
(a)CONTACT, PIN. . . 2 . .BACC47CN1SB
(a)CONTACT4 5 . . . 3BACC47CP1S
CONTACT. . . . . 3BACC47CP1T
(a)CONTACT. . . . 2 .BACC47CP2T
(f)CONNECTOR, ELECTRICAL,
PLUG, STRAIGHT, BAYONET
COUPLING, VIBRATION RESIS-
TANT
. 1 . . . .BACC63CB22-55P7
CONNECTOR, ELECTRICAL,
PLUG, STRAIGHT, BAYONET
COUPLING, VIBRATION RESIS-
TANT
. 1 . . . .BACC63CB22-55SN
CONTACT, PIN, SIZE 201 . . . . .CTA-0166
SPLICE SEALED CRIMP. . . . . 1D-436-36
SPLICE1 . . . . .D436-37
CONTACT, PIN, SIZE 201 . . . . .S280W555-920
(b)(e)Wire, W5100-0012-22, length 38
inches
. 1 . . . .-
(b)(e)Wire, W5100-0013-22, length 38
inches
. 1 . . . .-
(b)(e)Wire, W5110-5502-22, length 300
inches
. . 1 . . .-
(c)(e)Wire, W5156-5532-22, length 96
inches
. . . 1 . .-
(d)(e)Wire, W5158-0597-24, length 91
inches
. . . . 1 .-
(d)(e)Wire, W5158-0598-24, length 120
inches
. . . . 1 .-
(d)(e)Wire, W5510-0023-24, length 192
inches
. . . . . 1-
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
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### Page 45

Kit 280A3122
NotesNameQTYNew Part Number
-104 -105 -106 -107 -108 -109
(d)(e)Wire, W5510-0024-24, length 192
inches
. . . . . 1-
(d)(e)Wire, W5510-0025-24, length 192
inches
. . . . . 1-
(a)
There are more parts than are necessary.
(b) BMS 13-48, Type 10, Class 1, AWG 22.
(c) BMS 13-58, Type 1, Class 1, AWG 22.
(d) BMS 13-48, Type 11, Class 1, AWG 24.
(e) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
(f) The new connector plug BACC63CB22-55S7 replaced the connector plug BACC63CB22-55P7.
Kit 280A3122
NotesNameQTYNew Part Number
-110-111-112
ASSY - W6210- . .280A3122-110
ASSY - W6510. - .280A3122-111
(a)ASSY - W0212. . -280A3122-112
ID TAPE - CONNECTOR1 . .280A3122-11001
SLEEVE - SPLICE ID. 1 .280A3122-11101
SLEEVE - SPLICE ID. 1 .280A3122-11102
SLEEVE - SPLICE ID. 1 .280A3122-11103
CONTACT, PIN6 . .BACC47CN1S
CONTACT. 1 .BACC47CP1S
CONTACT. 4 .BACC47CP1T
SPLICE SEALED CRIMP. 3 .D-436-36
(b)(c)Wire, W6210-5511-22, length
300 inches
1 . .-
(b)(c)Wire, W6510-0004-22, length
480 inches
. 1 .-
(b)(c)Wire, W6510-0005-22, length
480 inches
. 1 .-
(b)(c)Wire, W6510-0006-22, length
240 inches
. 1 .-
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
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### Page 46

Kit 280A3122
NotesNameQTYNew Part Number
-110-111-112
(b)(c)Wire, W6510-0007-22, length
240 inches
. 1 .-
(a) Wire W0212-0001-22 is terminated at the D40372J, term 8. After this service bulletin is incorporated,
it becomes a spare wire and is no longer connected.
(b)
BMS 13-48, Type 10, Class 1, AWG 22.
(c) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Kit 280A3122
NotesNameQTYNew Part Number
-118 -117 -116 -115
ASSY - W2110. . . -280A3122-115
ASSY - W5100. . - .280A3122-116
ASSY - W5100. - . .280A3122-117
ASSY - W5100- . . .280A3122-118
ID TAPE - WIRE. . . 1280A3122-11501
ID TAPE - WIRE. . . 1280A3122-11502
ID TAPE - CONNECTOR. . . 1280A3122-11503
SLEEVE - SPLICE ID. . . 1280A3122-11504
SLEEVE - SPLICE ID. . . 1280A3122-11505
WIRE LIST. . . 1280A3122-115W
ID TAPE - CONNECTOR. . 1 .280A3122-11601
ID TAPE - CONNECTOR. . 1 .280A3122-11602
FILLER RODS - CONNECTOR. . 1 .280A3122-11603
FILLER RODS - CONNECTOR. . 1 .280A3122-11604
WIRE LIST. . 1 .280A3122-116W
ID TAPE - CONNECTOR. 1 . .280A3122-11701
ID TAPE - CONNECTOR. 1 . .280A3122-11702
FILLER RODS - CONNECTOR. 1 . .280A3122-11703
FILLER RODS - CONNECTOR. 1 . .280A3122-11704
WIRE - RAW MATERIAL. 1 . .280A3122-117W
WIRE - RAW MATERIAL1 . . .280A3122-118W
BACKSHELL. 2 2 1BACC10KD22
Export Controlled ECCN: 9E991 - BOEING
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Kit 280A3122
NotesNameQTYNew Part Number
-118 -117 -116 -115
CONTACT, SOCKET. 5 5 2BACC47CP1S
CONNECTOR, ELECTRICAL, PLUG,
STRAIGHT, BAYONET COUPLING, VIBRATION
RESISTANT
. 1 1 .BACC63CB22-55S7
CONNECTOR, ELECTRICAL, PLUG,
STRAIGHT, BAYONET COUPLING, VIBRATION
RESISTANT
. . . 1BACC63CB22-55S8
CONNECTOR, ELECTRICAL, PLUG,
STRAIGHT, BAYONET COUPLING, VIBRATION
RESISTANT
. 1 1 .BACC63CB22-55SN
SPLICE SEALED CRIMP. . . 2D-436-36
(a)(c)Wire, W2110-0007-24, length 240 inches. . . 1-
(a)(c)Wire, W2110-0008-24, length 240 inches. . . 1-
(b)(c)(d)Wire, W5100-0012-22, length 156 inches. . 1 .-
(b)(c)(d)Wire, W5100-0013-22, length 156 inches. . 1 .-
(b)(c)Wire, W5100-0012-22, length 174 inches1 1 . .-
(b)(c)Wire, W5100-0013-22, length 174 inches1 1 . .-
(a)
BMS 13-48, Type 11, Class 1, AWG 24.
(b) BMS 13-48, Type 10, Class 1, AWG 22.
(c) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
(d) Revised the lengths of the two wires W5100-0012-22 and W5100-0013-22 from 38 inches to 156 inches
each.
Kit 280A3122
NotesNameQTYNew Part Number
-114-113-2
WIRE KIT - FORWARD CARGO
SMOKE PENETRATION - PROCEDU-
RAL AND SYSTEMS CHANGES
. . -280A3122-2
ASSY - W2110. . 1280A3122-113
ASSY - W5100. . 1280A3122-114
BACKSHELL2 1 .BACC10KD22
CONNECTOR, ELECTRICAL, PLUG,
STRAIGHT, BAYONET COUPLING,
VIBRATION RESISTANT
1 . .BACC63CB22-55S7
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Kit 280A3122
NotesNameQTYNew Part Number
-114-113-2
(b)(d)Wire, W2110-0007-24, length 240 inches. 1 .-
(b)(d)Wire, W2110-0008-24, length 240 inches. 1 .-
(c)(d)(e)Wire, W5100-0012-22, length 156 inches1 . .-
(c)(d)(e)Wire, W5100-0013-22, length 156 inches1 . .-
(a) The 280A3122-2 is a supplemental kit for the 012A0057-1 Top Kit. The 280A3122-2 plus the 012A0057-
1 is equivalent to the 012A0057-5 top kit.
(b)
BMS 13-48, Type 11, Class 1, AWG 24
(c) BMS 13-48, Type 10, Class 1, AWG 22
(d) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
(e) Revised the lengths of the two wires W5100-0012-22 and W5100-0013-22 from 38 inches to 156
inches each. Sub assembly, part number 280A3122-114 of Wire Kit, part number 280A3122-2 is a
supplemental kit for part number 280A3122-105 of Wire Kit, part number 280A3122-1.
Kit 280A3122
NotesNameQTYNew Part Number
-5
WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES
-280A3122-5
LACING TAPE1280A2001-1
ASSY - W00761280A3122-101
ASSY - W00801280A3122-102
ASSY - W21101280A3122-103
ASSY - W25081280A3122-104
ASSY - W51001280A3122-105
ASSY - W51101280A3122-106
ASSY - W51561280A3122-107
ASSY - W51581280A3122-108
ASSY - W55101280A3122-109
ASSY - W65101280A3122-111
ASSY - W02121280A3122-112
ASSY - W62101280A3122-119
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Kit 280A3122
NotesNameQTYNew Part Number
-8
WIRE KIT - FORWARD CARGO SMOKE
PENETRATION - PROCEDURAL AND
SYSTEMS CHANGES
-280A3122-8
ASSY - W6210.280A3122-120
Kit 280A3122
NotesNameQTYNew Part Number
-119
ASSY - W6210-280A3122-119
WIRE LIST1280A3122-119W
CONTACT, PIN2BACC47CN1S
Kit 280A3122
NotesNameQTYNew Part Number
-120
ASSY - W6210-280A3122-120
WIRE LIST1280A3122-120W
CONTACT, PIN2BACC47CN1S
Kit 284A9200
NotesNameQTYNew Part Number
-119-120-121-122
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION
- . . .284A9200-119
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION
. - . .284A9200-120
KIT - J24 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION
. . - .284A9200-121
KIT - J22 BOX RELAY INSTALLATION,
FORWARD CARGO SMOKE PENETRA-
TION
. . . -284A9200-122
J24 BOX ASSY. 1 . .284A2224-4
J24 BOX ASSY. . 1 .284A2224-5
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Kit 284A9200
NotesNameQTYNew Part Number
-119-120-121-122
J24 BOX ASSY1 . . .284A2224-6
VINYL DECAL (R745)1 1 1 .BAC27DEX6412
VINYL DECAL, A1 1 1 .BAC27DEX6929
VINYL DECAL, B1 1 1 .BAC27DEX6930
VINYL DECAL - FARSIDE1 1 1 .BAC27DEX7096
VINYL DECAL - 01 1 1 .BAC27DEX7131
VINYL DECAL - AJ241 1 1 .BAC27DEX7133
VINYL DECAL - R2631 1 1 .BAC27DEX7134
VINYL DECAL - R2991 1 1 .BAC27DEX7135
VINYL DECAL - R4791 1 1 .BAC27DEX7136
VINYL DECAL - R4801 1 1 .BAC27DEX7137
VINYL DECAL - R4961 1 1 .BAC27DEX7138
VINYL DECAL - R5631 1 1 .BAC27DEX7139
VINYL DECAL - R5681 1 1 .BAC27DEX7140
VINYL DECAL - R5751 1 1 .BAC27DEX7141
VINYL DECAL - R5851 1 1 .BAC27DEX7142
VINYL DECAL - R6131 1 1 .BAC27DEX7143
VINYL DECAL - R6261 1 1 .BAC27DEX7144
VINYL DECAL - R6441 1 1 .BAC27DEX7145
VINYL DECAL - R6491 1 1 .BAC27DEX7146
VINYL DECAL - R6501 1 1 .BAC27DEX7147
VINYL DECAL - R6601 1 1 .BAC27DEX7148
VINYL DECAL - R6781 1 1 .BAC27DEX7149
VINYL DECAL - R7311 1 1 .BAC27DEX7150
VINYL DECAL - R7321 1 1 .BAC27DEX7151
VINYL DECAL - R7381 1 1 .BAC27DEX7152
VINYL DECAL - R7431 1 1 .BAC27DEX7153
VINYL DECAL - R7531 1 1 .BAC27DEX7154
VINYL DECAL - R7541 1 1 .BAC27DEX7155
VINYL DECAL - R9451 1 1 .BAC27DEX7156
VINYL DECAL - R9461 1 1 .BAC27DEX7157
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Kit 284A9200
NotesNameQTYNew Part Number
-119-120-121-122
VINYL DECAL - R9491 1 1 .BAC27DEX7158
VINYL DECAL - M16672 2 2 .BAC27DEX7159
VINYL DECAL - GB241 1 1 .BAC27DEX7160
VINYL DECAL - TB241 1 1 .BAC27DEX7161
VINYL DECAL - GB341 1 1 .BAC27DEX7162
VINYL DECAL - TB341 1 1 .BAC27DEX7163
VINYL DECAL - GD5241 1 1 .BAC27DEX7164
VINYL DECAL - GD5341 1 1 .BAC27DEX7165
VINYL DECAL - GD5441 1 1 .BAC27DEX7166
VINYL DECAL - R6481 1 1 .BAC27DEX7167
VINYL DECAL - R7841 . . .BAC27DEX7180
VINYL DECAL - R914. . 1 .BAC27DEX7273
MARKER - POS 11 1 1 .BAC27NEX0704
MARKER - POS 21 1 1 .BAC27NEX0705
MARKER - POS 31 1 1 .BAC27NEX0706
MARKER - POS 41 1 1 .BAC27NEX0707
MARKER - POS 51 1 1 .BAC27NEX0708
MARKER - POS 61 1 1 .BAC27NEX0709
VINYL DECAL1 1 1 .BAC27NEX0710
VINYL DECAL1 1 1 .BAC27NEX0937
BOLT4 8 . 4BACB30NM3K3
BONDING JUMPER1 1 1 .BACJ40D20-32
NUT24 24 24 36BACN10YR04CD
NUT1 1 1 .BACN10YR4CD
RELAY3 3 3 .BACR13CE2
RELAY1 1 1 .BACR13CG2AB
SCREW2 2 2 2BACS12CK06-14
FAIRING SCREWS4 4 4 4BACS12FA3K10
SCREW3 3 3 .BACS12GU3K10
SCREW24 24 24 36BACS12HN04-6
BOLT. . . 4BACS12HN08-8
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Kit 284A9200
NotesNameQTYNew Part Number
-119-120-121-122
SCREW2 2 2 1BACS12HN4-10
STRAP3 3 3 5BACS38K5
WASHER4 8 . 4NAS1149D0332J
WASHER,FLAT5 5 5 2NAS1149D0432H
WASHER, PLAIN24 24 24 36NAS1149DN332J
WASHER2 2 2 2NAS1149DN616J
WASHER. . . 4NAS1149DN832J
Kit 280A2001
NotesNameQTYNew Part Number
-1
LACING TAPE-280A2001-1
BMS 13-54 TAPE1N0001947
2.
Parts and Materials Supplied by the Operator:
The following parts or materials are necessary to do the change in this service bulletin. Parts and
materials in the manuals given in Paragraph 1.J., References, can also be necessary. Examine
operator part and material supply to make sure all necessary parts and materials are available.
NotesExisting Part NumberNameQTYPart Number / Specifica-
tion
(a)-CHEMICAL CONVERSION
COATING
1 OunceAlodine 600
(b)BACC47DJ2CONTACT, SOCKET4BACC47DJ1
(a)(c)-WIRE30 InchesBMS 13-60, TYPE 45,
CLASS 1, AWG 24
(a) Refer to the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
(b)
Socket Contact part number BACC47DJ1 can be used as an optional part for part number BACC47DJ2
in Wire Kit, part number 280A3122-101.
(c) Only necessary if existing wire W0080-5531-24 is too short for the changed wire connection.
3. Parts Modified and Reidentified:
The parts shown below are changed as shown in this service bulletin. The quantity (QTY) is the
number of parts changed on each airplane.
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NotesNew Part NumberNameQTYExisting Part Number
(b)284A9200-122J22 Junction Box Assembly1284A1222-( )
(a)284A9200-133J22 Junction Box Assembly1284A2222-2
(a)284A9200-123J22 Junction Box Assembly1284A2222-3
(a)284A9200-124J22 Junction Box Assembly1284A2222-4
(a)284A9200-125J22 Junction Box Assembly1284A2222-5
(a)284A9200-126J22 Junction Box Assembly1284A2222-6
(a)284A9200-127J22 Junction Box Assembly1284A2222-7
(a)284A9200-128J22 Junction Box Assembly1284A2222-8
(a)284A9200-129J22 Junction Box Assembly1284A2222-9
(a)284A9200-91J24 Junction Box Assembly1284A1224-3
(a)284A9200-92J24 Junction Box Assembly1284A1224-8
(a)284A9200-93J24 Junction Box Assembly1284A1224-11
(a)284A9200-94J24 Junction Box Assembly1284A1224-12
(a)284A9200-95J24 Junction Box Assembly1284A1224-13
(a)284A9200-96J24 Junction Box Assembly1284A1224-15
(a)284A9200-97J24 Junction Box Assembly1284A1224-16
(a)284A9200-98J24 Junction Box Assembly1284A1224-17
(a)284A9200-99J24 Junction Box Assembly1284A1224-18
(a)284A9200-102J24 Junction Box Assembly1284A1224-20
(a)284A9200-106J24 Junction Box Assembly1284A1224-22
(a)284A9200-115J24 Junction Box Assembly1284A1224-23
(a)284A9200-100J24 Junction Box Assembly1284A1224-115
(a)284A9200-101J24 Junction Box Assembly1284A1224-117
(a)284A9200-103J24 Junction Box Assembly1284A1224-118
(a)284A9200-114J24 Junction Box Assembly1284A1224-119
(a)284A9200-104J24 Junction Box Assembly1284A1224-120
(a)284A9200-105J24 Junction Box Assembly1284A1224-121
(a)284A9200-119J24 Junction Box Assembly1284A1224-123
(a)284A9200-107J24 Junction Box Assembly1284A1224-125
(a)284A9200-116J24 Junction Box Assembly1284A1224-127
(a)284A9200-108J24 Junction Box Assembly1284A1224-201
(a)284A9200-117J24 Junction Box Assembly1284A1224-201, -202 and -207
(a)284A9200-118J24 Junction Box Assembly1284A1224-201 and -207
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NotesNew Part NumberNameQTYExisting Part Number
(a)284A9200-109J24 Junction Box Assembly1284A1224-201 and -202
(a)284A9200-109J24 Junction Box Assembly1284A1224-315
(a)284A9200-110J24 Junction Box Assembly1284A1224-201, -202 and -203
(a)284A9200-110J24 Junction Box Assembly1284A1224-317
(a)284A9200-111J24 Junction Box Assembly1284A1224-201, -202 and -205
(a)284A9200-112J24 Junction Box Assembly1284A1224-201 and -203
(a)284A9200-112J24 Junction Box Assembly1284A1224-318
(a)284A9200-113J24 Junction Box Assembly1284A1224-201 and -205
(a)284A9200-113J24 Junction Box Assembly1284A1224-321
(a)
Make the change given in this service bulletin.
(b) This is the part number of the J22 Junction Box Assembly, assembled together with the relays, wires
and components.
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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3.    ACCOMPLISHMENT INSTRUCTIONS
A.
GENERAL INFORMATION
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.
CAUTION
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 Values:
— Values for structural fasteners are given in 737 Structural Repair Manual,
Chapter 51.
— Values for airframe maintenance tasks are included in Chapter 20 of 737
Aircraft Maintenance Manual (AMM).
— Values for electrical maintenance tasks are included in Chapter 20 of
Standard Wiring Practices Manual (SWPM).
— Values for engine maintenance tasks are included in Chapter 70 of 737
Aircraft Maintenance Manual (AMM).
— Non-standard torque values for maintenance tasks are included in the
applicable installation step.
4. Use the approved fastener, process and 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.
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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. Refer to SOPM 20-50-01 for alternate
full threaded fasteners (screws) needed for installation in this service bulletin.
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.
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.
11. Refer to APPENDIX A for a list of tests for systems that may have been disturbed
by the work done on the J22 and J24 junction boxes.
B. WORK INSTRUCTIONS
1. Remove electrical power from the airplane. Put a DO-NOT-CLOSE tag on each opened circuit
breaker. Refer to 737-600/700/800/900 AMM 24-22-00 as an accepted procedure.
2. Disconnect the battery connectors from the batteries. Refer to 737-600/700/800/900 AMM 24-31-11
as an accepted procedure.
3. In the nose landing gear wheel well, remove and keep these access panels. Refer to
737-600/700/800/900 AMM 06-41-00 as an accepted procedure.
Name/LocationPanel Number
Fwd Nose Wheel Well Upper Access Panel113AC
Forward Nose Wheel Well Panel113AW
Forward Nose Wheel Well Panel113BW
Fwd Nose Wheel Well Upper Access Panel114AC
Forward Nose Wheel Well Panel114AW
Forward Nose Wheel Well Panel114BW
4.
At the forward fuselage, open the electronic equipment access door, 117A. Refer to
737-600/700/800/900 AMM 06-41-00 as an accepted procedure.
5. At the forward fuselage, open the forward access door, 112A. Refer to 737-600/700/800/900 AMM
06-41-00 as an accepted procedure.
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6. At the forward fuselage, open the forward cargo door. Refer to 737-600/700/800/900 AMM 52-31-00
as an accepted procedure.
7.
In the forward cargo compartment, remove and keep the forward bulkhead liner to get access to
the E2, E3 and E4 racks. Refer to 737-600/700/800/900 AMM 25-52-16 as an accepted procedure.
8. Remove and keep the cargo compartment ceiling liners aft of the E2, E3 and E4 racks. Refer to
737-600/700/800/900 AMM 25-52-09 as an accepted procedure.
9. Make changes as given below:
Group 1:
a. Remove the J22 junction box assembly from the airplane in accordance with FIGURE 1.
b. Remove and keep the relays and wire bundle from the J22 junction box assembly in accordance
with FIGURE 2.
c. Change the J22 junction box assembly in accordance with FIGURE 3.
d. Change the W0076 wire bundle in accordance with FIGURE 5 and FIGURE 6.
e. Install the kept relays and changed wire bundle into the changed J22 junction box assembly
in accordance with FIGURE 7.
f. Remove the J24 junction box assembly from the airplane in accordance with FIGURE 8.
g. Remove and keep the relays and wire bundle from the J24 junction box assembly in accordance
with FIGURE 9.
h. Change the W0080 wire bundle in accordance with FIGURE 11 and FIGURE 13.
i. Install markers on the new J24 junction box assembly in accordance with FIGURE 14.
j. Install the kept relays and changed wire bundle into the new J24 junction box assembly in
accordance with FIGURE 15.
k. Change the W2110 wire bundle in accordance with FIGURE 22 and FIGURE 23.
l. Change the W2508 wire bundle in accordance with FIGURE 24 and FIGURE 25.
m. Change the W5158 wire bundle in accordance with FIGURE 24 and FIGURE 26.
n. Change the W5100 wire bundle in accordance with FIGURE 29 and FIGURE 31.
o. Change the W5510 wire bundle in accordance with FIGURE 29 and FIGURE 33.
p. Change the W6510 wire bundle in accordance with FIGURE 35, FIGURE 36 and FIGURE
37.
q. Change the W5156 wire bundle in accordance with FIGURE 36 and FIGURE 38.
r. Change the W5110 wire bundle in accordance with FIGURE 35 and FIGURE 39.
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s. Change the W6210 wire bundle in accordance with FIGURE 35 and FIGURE 40.
t.
Install the J22 junction box assembly in accordance with FIGURE 41.
u. Install the J24 junction box assembly in accordance with FIGURE 42.
Group 2:
a. Remove the J22 junction box assembly from the airplane in accordance with FIGURE 1.
b. Remove and keep the relays and wire bundle from the J22 junction box assembly in accordance
with FIGURE 2.
c. Change the J22 junction box assembly in accordance with FIGURE 3.
d. Change the W0076 wire bundle in accordance with FIGURE 5 and FIGURE 6.
e. Install the kept relays and changed wire bundle into the changed J22 junction box assembly
in accordance with FIGURE 7.
f. Remove the J24 junction box assembly from the airplane in accordance with FIGURE 8.
g. Remove and keep the relays and wire bundle from the J24 junction box assembly in accordance
with FIGURE 10.
h. Change the W0080 wire bundle in accordance with FIGURE 11 and FIGURE 13.
i. Install markers on the new J24 junction box assembly in accordance with FIGURE 16.
j. Install the kept relays and changed wire bundle into the new J24 junction box assembly in
accordance with FIGURE 17.
k. Change the W2110 wire bundle in accordance with FIGURE 22 and FIGURE 23.
l. Change the W2508 wire bundle in accordance with FIGURE 24 and FIGURE 25.
m. Change the W5158 wire bundle in accordance with FIGURE 24 and FIGURE 26.
n. Change the W5100 wire bundle in accordance with FIGURE 29 and FIGURE 43.
o. Change the W5510 wire bundle in accordance with FIGURE 29 and FIGURE 33.
p. Change the W6510 wire bundle in accordance with FIGURE 35, FIGURE 36 and FIGURE
37.
q. Change the W5156 wire bundle in accordance with FIGURE 36 and FIGURE 38.
r. Change the W5110 wire bundle in accordance with FIGURE 35 and FIGURE 39.
s. Change the W6210 wire bundle in accordance with FIGURE 35 and FIGURE 40.
t. Install the J22 junction box assembly in accordance with FIGURE 41.
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### Page 59

u. Install the J24 junction box assembly in accordance with FIGURE 42.
Group 3:
a.
Remove the J22 junction box assembly from the airplane in accordance with FIGURE 1.
b. Remove and keep the relays and wire bundle from the J22 junction box assembly in accordance
with FIGURE 2.
c. Change the J22 junction box assembly in accordance with FIGURE 3.
d. Change the W0076 wire bundle in accordance with FIGURE 5 and FIGURE 6.
e. Install the kept relays and changed wire bundle into the changed J22 junction box assembly
in accordance with FIGURE 7.
f. Remove the J24 junction box assembly from the airplane in accordance with FIGURE 8.
g. Remove and keep the relays and wire bundle from the J24 junction box assembly in accordance
with FIGURE 9.
h. Change the W0080 wire bundle in accordance with FIGURE 12 and FIGURE 13.
i. Install markers on the new J24 junction box assembly in accordance with FIGURE 18.
j. Install the kept relays and changed wire bundle into the new J24 junction box assembly in
accordance with FIGURE 19.
k. Change the W2110 wire bundle in accordance with FIGURE 22 and FIGURE 23.
l. Change the W2508 wire bundle in accordance with FIGURE 24 and FIGURE 25.
m. Change the W5158 wire bundle in accordance with FIGURE 24 and FIGURE 26.
n. Change the W5100 wire bundle in accordance with FIGURE 29 and FIGURE 43.
o. Change the W5510 wire bundle in accordance with FIGURE 29 and FIGURE 33.
p. Change the W6510 wire bundle in accordance with FIGURE 35, FIGURE 36 and FIGURE
37.
q. Change the W5156 wire bundle in accordance with FIGURE 36 and FIGURE 38.
r. Change the W5110 wire bundle in accordance with FIGURE 35 and FIGURE 39.
s. Change the W6210 wire bundle in accordance with FIGURE 35 and FIGURE 40.
t. Install the J22 junction box assembly in accordance with FIGURE 41.
u. Install the J24 junction box assembly in accordance with FIGURE 42.
Group 4:
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
59 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

### Page 60

a. Remove the J22 junction box assembly from the airplane in accordance with FIGURE 1.
b. Remove and keep the relays and wire bundle from the J22 junction box assembly in accordance
with FIGURE 2.
c.
Change the J22 junction box assembly in accordance with FIGURE 3.
d. Change the W0076 wire bundle in accordance with FIGURE 5 and FIGURE 6.
e. Install the kept relays and changed wire bundle into the changed J22 junction box assembly
in accordance with FIGURE 7.
f. Remove the J24 junction box assembly from the airplane in accordance with FIGURE 8.
g. Remove and keep the relays and wire bundle from the J24 junction box assembly in accordance
with FIGURE 9.
h. Change the W0080 wire bundle in accordance with FIGURE 11 and FIGURE 13.
i. Install markers on the new J24 junction box assembly in accordance with FIGURE 14.
j. Install the kept relays and changed wire bundle into the new J24 junction box assembly in
accordance with FIGURE 15.
k. Change the W2110 wire bundle in accordance with FIGURE 22 and FIGURE 23.
l. Change the W2508 wire bundle in accordance with FIGURE 27 and FIGURE 28.
m. Change the W5100 wire bundle in accordance with FIGURE 30 and FIGURE 31.
n. Change the W5158 wire bundle in accordance with FIGURE 30 and FIGURE 32.
o. Change the W5510 wire bundle in accordance with FIGURE 30 and FIGURE 34.
p. Change the W6510 wire bundle in accordance with FIGURE 35, FIGURE 36 and FIGURE
37.
q. Change the W5156 wire bundle in accordance with FIGURE 36 and FIGURE 38.
r. Change the W5110 wire bundle in accordance with FIGURE 35 and FIGURE 39.
s. Change the W6210 wire bundle in accordance with FIGURE 35 and FIGURE 40.
t. Install the J22 junction box assembly in accordance with FIGURE 41.
u. Install the J24 junction box assembly in accordance with FIGURE 42.
Group 5:
a. Remove the J22 junction box assembly from the airplane in accordance with FIGURE 1.
b. Remove and keep the relays and wire bundle from the J22 junction box assembly in accordance
with FIGURE 2.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: December 13, 2007
737-26A1122Revision 3: January 31, 2020
60 of 227
BOEING SERVICE BULLETIN 737-26A1122
ALERTALERT

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