# Boeing Alert Service Bulletin 737-28A1227: Revision 2 - Rights: © The Boeing Company. Filed by the FAA in regulations.gov docket FAA-2011-1068; AD 2016-18-16 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Boeing Alert Service Bulletin 737-28A1227](https://openairdocs.org/service-documents/boeing/737-28a1227.md) - Title as filed: SB-737-28A1227-02--BOEING - Pages: 287 - PDF: https://openairdocs.org/files/sha256/24/52/2452c673934d4d97fc4f85f57367acc737118ce456d87abff27850c307c258bc - Page: https://openairdocs.org/service-documents/boeing/737-28a1227/file/2452c673934d ## Text Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Commercial Airplanes 737 Service Bulletin Number: 737-28A1227 Original Issue: August 02, 2010 Revision 2: September 23, 2014 ATA System: 2822 SUBJECT: FUEL - Distribution - Center and Auxiliary Tank Boost Pumps Fuel Control System Un-Commanded On Relay Installation and Related Wiring 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 © 2010 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 Unpublished Work.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: August 02, 2010 737-28A1227Revision 2: September 23, 2014 1 of 287 9.0 ### Page 2 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 2 of 287 BOEING SERVICE BULLETIN 737-28A1227 BLANK PAGE ### Page 3 Table of Contents Revision Transmittal Sheet ............................................ 7 S u m m a r y..................................................... 1 1 1. PLANNING INFORMATION ........................................ 1 5 A . E f f e c t i v i t y ............................................... 1 5 1. Airplanes ............................................ 1 5 2 . S p a r e s A f f e c t e d ........................................ 3 2 B. Concurrent Requirements ...................................... 3 2 C. Reason ................................................ 3 3 D . D e s c r i p t i o n .............................................. 3 4 E. Compliance .............................................. 3 6 F . A p p r o v a l ............................................... 3 6 G. Manpower .............................................. 3 6 H. Weight and Balance Changes .................................... 4 7 I. Electrical Load Data ......................................... 4 8 J . R e f e r e n c e s .............................................. 4 9 1. Existing Data: ......................................... 4 9 2. Data Supplied with this Service Bulletin: ........................... 4 9 3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 5 0 K. Publications Affected ........................................ 5 0 L. Interchangeability and Intermixability of Parts ........................... 5 0 M. Software Accomplishment Summary ................................ 5 0 2. MATERIAL INFORMATION ........................................ 5 1 A. Material - Price and Availability ................................... 5 1 B. Industry Support Information .................................... 5 7 C . P a r t s N e c e s s a r y f o r E a c h A i r p l a n e ................................. 5 7 1 . K i t s / P a r t s : ........................................... 5 7 2. Parts and Materials Supplied by the Operator: ........................ 6 9 3. Parts Modified and Reidentified: ............................... 7 0 4. Parts Removed and Not Replaced: .............................. 7 2 D. Parts Necessary to Change Spares ................................. 7 2 E. Special Tooling - Price and Availability ............................... 7 2 F. Special Tooling Necessary to do this Service Bulletin ....................... 7 2 3. ACCOMPLISHMENT INSTRUCTIONS .................................. 7 3 A. GENERAL INFORMATION ..................................... 7 3 B. WORK INSTRUCTIONS ....................................... 7 4 FIGURE 1: J2802 BOX ASSEMBLY - RELAYS AND SWITCHES INSTALLATION [Group 2-3; Group 5-6, Configuration 1] ......................................... 8 4 FIGURE 2: WIRE BUNDLE W1760 AND W1770 IN THE J2802 BOX ASSEMBLY - ROUTING [Group 2-3; Group 5-6, Configuration 1] .................................. 8 9 FIGURE 3: WIRE BUNDLE W1760 IN THE J2802 BOX ASSEMBLY - WIRING CHANGE [Group 2-3; Group 5-6, Configuration 1] ...................................... 9 0 FIGURE 4: WIRE BUNDLE W1770 IN THE J2802 BOX ASSEMBLY - WIRING CHANGE [Group 2-3; Group 5-6, Configuration 1] ...................................... 9 3 FIGURE 5: J2802 BOX ASSEMBLY - RELAYS AND SWITCHES INSTALLATION [Group 5-6, Configuration 2 ] ................................................ 9 6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 3 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 4 FIGURE 6: WIRE BUNDLE W1760 AND W1770 IN THE J2802 BOX ASSEMBLY - ROUTING [Group 5-6, Configuration 2] ........................................ 1 0 1 FIGURE 7: WIRE BUNDLE W1760 IN THE J2802 BOX ASSEMBLY - WIRING CHANGE [Group 5-6, Configuration 2] ........................................ 1 0 2 FIGURE 8: WIRE BUNDLE W1770 IN THE J2802 BOX ASSEMBLY - WIRING CHANGE [Group 5-6, Configuration 2] ........................................ 1 0 6 FIGURE 9: WIRE BUNDLE W0368, W0386, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - ROUTING [Group 2] ....................... 1 1 0 FIGURE 10: WIRE BUNDLE W0368 AND W1764 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 2; Group 7, Configuration 1-2; Group 8, Configuration 1-2; Group 11] ......................................... 1 1 5 FIGURE 11: WIRE BUNDLE W0386 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 2; Group 7, Configuration 1-2; Group 8, Configuration 1 - 2 ] ............................................... 1 1 8 FIGURE 12: WIRE BUNDLE W0368, W0386, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - ROUTING [Group 3; Group 5-6, Configuration 1] ....... 1 2 1 FIGURE 13: WIRE BUNDLE W0368 AND W1764 FROM DISCONNECT PANEL A TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 3; Group 5-6, Configuration 1; Group 10; Group 12, Configuration 1-2; Group 13, Configuration 1-2] .............................. 1 2 6 FIGURE 14: WIRE BUNDLE W0386 AND W1774 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGES [Group 3; Group 5-6, Configuration 1; Group 10; Group 12, Configuration 1-2; Group 13, Configuration 1-2] ....................... 1 2 9 FIGURE 15: WIRE BUNDLE W0368, W0386, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - ROUTING [Group 4, 9] ..................... 1 3 2 FIGURE 16: WIRE BUNDLE W0368 AND W1764 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 4, 9] ........................ 1 3 8 FIGURE 17: WIRE BUNDLE W0386 AND W1774 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 4, 9, 11] ..................... 1 4 1 FIGURE 18: WIRE BUNDLE W0368, W0386, W1034, W1046, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - ROUTING [Group 5, Configuration 2] ...... 1 4 3 FIGURE 19: WIRE BUNDLE W0368, W1046 AND W1764 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 5, Configuration 2; Group 12, Configuration 3-4] . 148 FIGURE 20: WIRE BUNDLE W0386, W1034 AND W1774 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 5, Configuration 2; Group 12, Configuration 3-4] . 153 FIGURE 21: WIRE BUNDLE W0368, W0386, W1034, W1046, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - ROUTING [Group 6, Configuration 2] ...... 1 5 8 FIGURE 22: WIRE BUNDLE W0368, W1046 AND W1764 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 6, Configuration 2; Group 13, Configuration 3-4] . 166 FIGURE 23: WIRE BUNDLE W0386, W1034 AND W1774 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 6, Configuration 2; Group 13, Configuration 3-4] . 171 FIGURE 24: WIRE BUNDLE W0368, W0386, W1034, W1046, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - ROUTING ..................... 1 7 6 FIGURE 25: WIRE BUNDLE W0368, W1046 AND W1764 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 7, Configuration 3-4] ............... 1 7 7 FIGURE 26: WIRE BUNDLE W0386, W1034 AND W1774 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 7, Configuration 3-4] ............... 1 8 1 FIGURE 27: WIRE BUNDLE W0368, W0386, W1034, W1046, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY - ROUTING [Group 8, Configuration 3-4] ..... 1 8 5 FIGURE 28: WIRE BUNDLE W0368, W1046 AND W1764 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 8, Configuration 3-4] ............... 1 9 1 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 4 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 5 FIGURE 29: WIRE BUNDLE W0386, W1034 AND W1774 FROM P6 DISCONNECT PANEL TO J2802 BOX ASSEMBLY - WIRING CHANGE [Group 8, Configuration 3-4] ............... 1 9 5 FIGURE 30: J2802 BOX ASSEMBLY - CLOSE ACCESS [Group 2-3, 5-6] ............... 1 9 9 FIGURE 31: J2802 BOX ASSEMBLY - RELAYS AND SWITCHES INSTALLATION FOR AIRPLANES WITH AIRSTAIRS [Group 4, 7-13, Configuration 1] ........................ 2 0 1 FIGURE 32: J2802 BOX ASSEMBLY - RELAYS AND SWITCHES INSTALLATION FOR AIRPLANES WITH AIRSTAIRS [Group 4, 7-13, Configuration 2] ........................ 2 0 7 FIGURE 33: WIRE BUNDLE W1760 AND W1770 IN THE J2802 BOX ASSEMBLY (AIRPLANES WITH AIRSTAIRS) - ROUTING [Group 4; Group 7, Configuration 1-2; Group 8, Configuration 1-2; Group 9-11; Group 12, Configuration 1-2; Group 13, Configuration 1-2] .......... 2 1 1 FIGURE 34: J2802 BOX ASSEMBLY (AIRPLANES WITH AIRSTAIRS) - RELAYS AND SWITCHES INSTALLATION [Group 7-8, 12-13, Configuration 3] .................... 2 1 2 FIGURE 35: J2802 BOX ASSEMBLY - RELAYS AND SWITCHES INSTALLATION FOR AIRPLANES WITH AIRSTAIRS [Group 7-8, 12-13, Configuration 4] ...................... 2 1 8 FIGURE 36: WIRE BUNDLE W1760 AND W1770 IN THE J2802 BOX ASSEMBLY (AIRPLANES WITH AIRSTAIRS) - ROUTING [Group 7, Configuration 3-4; Group 8, Configuration 3-4; Group 12, Configuration 3-4; Group 13, Configuration 3-4] ....................... 2 2 4 FIGURE 37: WIRE BUNDLE W0368, W0386, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY (AIRPLANES WITH AIRSTAIRS) - ROUTING [Group 7, Configuration 1-2; Group 8, Configuration 1-2; Group 11] ......................... 2 2 5 FIGURE 38: WIRE BUNDLE W0368, W0386, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY (AIRPLANES WITH AIRSTAIRS) - ROUTING [Group 10; Group 12, Configuration 1-2; Group 13, Configuration 1-2] ....................... 2 3 1 FIGURE 39: WIRE BUNDLE W0368, W0386, W1034, W1046, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY (AIRPLANES WITH AIRSTAIRS) - ROUTING [Group 12, Configuration 3-4] ..................................... 2 3 7 FIGURE 40: WIRE BUNDLE W0368, W0386, W1034, W1046, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY (AIRPLANES WITH AIRSTAIRS) - ROUTING [Group 13, Configuration 3-4] ..................................... 2 4 3 FIGURE 41: WIRE BUNDLE W0368, W0386, W1034, W1046, W1764 AND W1774 FROM P6 DISCONNECT PANELS TO J2802 BOX ASSEMBLY (AIRPLANES WITH AIRSTAIRS) - ROUTING [Group 7, Configuration 3-4] ....................................... 2 5 2 FIGURE 42: J2802 BOX ASSEMBLY - CLOSE ACCESS [Group 4, 7-13] ............... 2 5 8 FIGURE 43: WIRE BUNDLE W1760 THE J2802 BOX ASSEMBLY - WIRING CHANGE [Group 4; Group 7, Configuration 1-2; Group 8, Configuration 1-2; Group 9-11; Group 12, Configuration 1-2; Group 13, Configuration 1-2] ..................................... 2 6 0 FIGURE 44: WIRE BUNDLE W1770 THE J2802 BOX ASSEMBLY - WIRING CHANGE [Group 4; Group 7, Configuration 1-2; Group 8, Configuration 1-2; Group 9-11; Group 12, Configuration 1-2; Group 13, Configuration 1-2] ..................................... 2 6 3 FIGURE 45: WIRE BUNDLE W1760 THE J2802 BOX ASSEMBLY - WIRING CHANGE [Group 7, Configuration 3-4; Group 8, Configuration 3-4; Group 12, Configuration 3-4; Group 13, Configuration 3-4] ....................................... 2 6 6 FIGURE 46: WIRE BUNDLE W1770 THE J2802 BOX ASSEMBLY - WIRING CHANGE [Group 7, Configuration 3-4; Group 8, Configuration 3-4; Group 12, Configuration 3-4; Group 13, Configuration 3-4] ....................................... 2 7 1 FIGURE 47: J2802 BOX ASSEMBLY (WITHOUT AUXILIARY TANKS) - LABELS - INSTALLATION [Group 2-3; Group 5-6, Configuration 1] ............................... 2 7 6 FIGURE 48: J2802 BOX ASSEMBLY (WITH AUXILIARY TANKS) - LABELS - INSTALLATION [Group 5-6, Configuration 2] ........................................ 2 8 0 APPENDIX A: KIT ORDERING FLOW CHART ............................... 2 8 4 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 5 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 6 APPENDIX B: BOEING PART DEMAND INTENT ............................. 2 8 7 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 6 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 7 Commercial Airplanes 737 Service Bulletin Revision Transmittal SheetNumber: 737-28A1227Original Issue: August 02, 2010 Revision 2: September 23, 2014 ATA System: 2822 SUBJECT: FUEL - Distribution - Center and Auxiliary Tank Boost Pumps Fuel Control System Un-Commanded On Relay Installation and Related Wiring Changes This revision includes all pages of the service bulletin. COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Notice of Proposed Rule Making NPRM 2010-NM-189-AD, is related to this service bulletin. More work is necessary for airplanes in Groups 1 thru 3, 5 and 6, changed in accordance with Original Issue or Revision 1 of this service bulletin that did not install labels on the J2802 Box Assembly. Do the work identified in the Work Instructions. Airplanes in Group 4 and 7 thru 13 with airstairs, that were originally included in Groups 1 thru 8, but could not accomplish the Original Issue or Revision 1 of this service bulletin, because concurrent Boeing Service Bulletins, 737-28A1216 and 737-28A1228 could not be accomplished until Boeing Service Bulletin 737-28A1216 Revision 2 and 737-28A1228 Revision 1 had been released. Operators can now accomplish the work in accordance with this revision of this service bulletin. REASON FOR REVISION This revision is sent to align its accomplishment with the release of Boeing Service bulletins 737-28A1216 Revision 2 and 737-28A1228 Revision 1, for the installation of relays and toggle switches into the new design of J2802 Box Assembly and the related wiring, for airplanes with airstairs. Because of this condition, Boeing designed a different J2802 Box Assembly that can be installed on airplanes with airstairs without interference. This revision includes the different design and lets airplanes with airstairs accomplish this service bulletin. As a result of the changes, airplanes with airstairs have been separated from those without airstairs and have been subsequently identified in new Groups 9 thru 13 and existing groups 4, 7 and 8. Airplanes without airstairs are identified in Groups 1 thru 3, 5 and 6. These sections are changed: 1. Summary Background: Planning Data Table added. 2. Summary Action: Statement changed. 3. Summary Compliance: New Notice of Proposed Rule Making data added. 4. Summary Figure: Airplanes with airstairs added. 5. Paragraph 1.A., Effectivity: Changed to show new airplane groups and configurations. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 7 of 287 ### Page 8 6. Paragraph 1.B., Concurrent Requirements: Concurrent requirement data is changed. 7. Paragraph 1.C., Reason: Revision 2 statement added. 8. Paragraph 1.D., Description: Revision 2 statement added and Applicability is added to affected maintenance zones. 9. Paragraph 1.E., Compliance: New Notice of Proposed Rulemaking data added. 10. Paragraph 1.G., Manpower: Manpower estimates for new groups added. 11. Paragraph 1.H., Weight and Balance Changes: Applicability added for new airplane groups. 12. Paragraph 1.I., Electrical Load Data: Applicability added for new airplane groups. 13. Paragraph 1.J.1., Existing Data: References list changed. 14. Paragraph 1.K., Publications Affected: Chapter-Section changed. 15. Paragraph 1.M., Software Accomplishment Summary: New section added. 16. Paragraph 2.A., Material - Price and Availability: Group Configuration data for tables changed. 17. Paragraph 2.C.2., Parts and Materials Supplied by the Operator: Table changed with parts added and deleted. 18. Paragraph 2.C.3., Parts Modified and Reidentified: Part numbers changed. 19. Paragraph 3.A., General Information: Notes changed to latest standard and additional information added. 20. Paragraph 3.B., Work Instructions: Work instructions for new groups are added. 21. FIGURE 1 and FIGURE 5: Applicability, Illustration and Step Table changed. 22. FIGURE 2 and FIGURE 6: Applicability, Illustration and Title changed. 23. FIGURE 3, FIGURE 4, FIGURE 7 and FIGURE 8: Applicability and Title changed. 24. FIGURE 9: Illustration changed. 25. FIGURE 10 and FIGURE 11: Applicability and Illustration changed. 26. FIGURE 12: Illustration changed with views added and clarified. 27. FIGURE 13 and FIGURE 14: Applicability, Illustration and Step Table changed 28. FIGURE 15, FIGURE 16 and FIGURE 17: Applicability and Illustration changed. 29. FIGURE 18: Illustration changed. 30. FIGURE 19 to FIGURE 23: Applicability and Illustration changed. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 8 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 9 31. FIGURE 24: Figure deleted. 32. FIGURE 25 to FIGURE 29: Applicability and Illustration changed. 33. FIGURE 30: Applicability and Step Table changed. 34. FIGURE 31 to FIGURE 48: Added to service bulletin due to change to Work Instructions. 35. APPENDIX A: Added to aid Kit procurement. 36. APPENDIX B: Added to service bulletin. Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location of important changes. Pages with no vertical lines have no important changes. REVISION HISTORY August 02, 2010Original Issue: July 18, 2011Revision 1: September 23, 2014Revision 2: Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 9 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 10 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 10 of 287 BOEING SERVICE BULLETIN 737-28A1227 BLANK PAGE ### Page 11 Commercial Airplanes 737 Service Bulletin SummaryNumber: 737-28A1227Original Issue: August 02, 2010 Revision 2: September 23, 2014 ATA System: 2822 SUBJECT: FUEL - Distribution - Center and Auxiliary Tank Boost Pumps Fuel Control System Un-Commanded On Relay Installation and Related Wiring Changes CONCURRENT REQUIREMENTS Refer to Paragraph 1.B., Concurrent Requirements. BACKGROUND This service bulletin affects the 737-200/-200C/-300/-400/-500 airplanes with line numbers 292 thru 3132 that have center tanks, and center and auxiliary fuel tanks. Operators with 737-100/-200/-200C airplanes with line numbers 1 thru 291 should contact Boeing to obtain engineering and accomplishment instructions for this modification. This service bulletin is sent to give 'un-commanded on' protection for the fuel pump control system. Instructions are given to add one more relay, as a fail safe, for each fuel pump in the center and auxiliary fuel tanks. If this service bulletin is not done, the fuel pumps could run dry, which increases the pumps temperature and could cause an ignition source for fuel vapor in the fuel tank. Ignition of the flammable fuel vapors in the fuel tanks, could cause a fire or explosion which will put the airplane in an unsafe condition. The Boeing system safety assessment necessary for Special Federal Aviation Regulation (SFAR) 88, showed that electrical faults within the fuel tank pump system can cause a fuel pump to operate when the fuel pump switch is in the 'OFF' position. Boeing has developed a new system to prevent extended operation of the fuel tank boost pumps in this condition. This new system has a second relay to prevent the operation of a pump when its switch is in the 'OFF' position. The auto shutdown relay currently installed for each pump gives the same solution as the new additional relay, but is known to have caused in-service problems because its contacts have 'welded' closed and continued to let power be supplied. This condition is referred to as 'un-commanded on' (UCO) pump operation. This new second relay added to the existing fuel control circuit and interfaced with the P5-2 fuel control module, prevents UCO operation of the fuel boost pumps. The system senses if there is a voltage remaining in the fuel boost pump circuit and activates the UCO relay to remove the power. In the flight deck, the pump low pressure light in the P5-2 fuel systems module, and master caution light come on when the fuel pump is at low pressure. No additional indication is provided for dry running pumps. Accomplishment of this service bulletin installs new UCO relays and toggle switches in the J2802 Box Assembly located in the Electronic Equipment Bay (E/E bay). This service bulletin also changes and adds new wire bundles that route from the J2802 box assembly to the P5 Forward Overhead Panel and the P6 Disconnect Panels. Installation of the new UCO relays for each pump will prevent "dry running" of the fuel pumps and reduce the risk of fuel tank fire or explosion. The Airworthiness Limitations (AWL) 28-AWL-24 (Center Tank) and 28-AWL-25 (Auxiliary Fuel Tank) for 737-100/200/200C airplanes, and AWL 28-AWL-23 (Center Tank) and 28-AWL-24 (Auxiliary Fuel Tank) for 737-300/400/500 airplanes listed in 737-100/200/200C/300/400/500 AWLs and Certification Maintenance Requirements (CMRs), D6-38278-CMR, are related to this service bulletin. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 11 of 287 ### Page 12 Boeing Fleet Team Digest (FTD) 737 FTD 28-04004 is related to this service bulletin. This table is provided to operators for planning purposes only. Refer to the applicable sections for more information. ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedNoSpares Affected Paragraph 1.E., 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 35443-RS) Remove equipment as necessary to get access to the J2802 Box Assembly on the E2 and E3 support posts in the E/E bay, P6 Load Control Center in the flight compartment/control cabin, and P6 disconnect panels. Remove the cover from the J2802 Box Assembly and install wire bundles W1760 and W1770, relays and toggle switches. Change wire bundles W0368, W0386, W1034, W1046, W1764 and W1774, as applicable, between the P6 disconnect panels and J2802 Box Assembly. Check the continuity of all the new and changed wires and do a functional test to make sure the changed fuel control system operates correctly. Operators with Group 1 airplanes should contact Boeing to obtain engineering and accomplishment instructions for this modification and do the instructions. EFFECTIVITY 737-100/200/200C/300/400/500 Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s). COMPLIANCE Federal Aviation Administration (FAA) Notice of Proposed Rule Making NPRM 2010-NM-189-AD, is related to this service bulletin. Boeing recommends that the change given in this service bulletin be done within 60 months after the original issue date of this service bulletin. Operators with Group 1 airplanes should contact Boeing to obtain engineering and accomplishment instructions for this modification and do the instructions. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 12 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 13 INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes given in this service bulletin. MANPOWER Refer to Paragraph 1.G., Manpower. MATERIAL INFORMATION Boeing Supplied Kits. Operator Supplied Parts/Materials. Refer to Paragraph 2.A., Material - Price and Availability. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 13 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 14 (OCR) BOEING SERVICE BULLETIN 737-28A1227 CHANGE WIRE BUNDLES CHANGE WIRE BUNDLES W0368/W0386 W1764/W1774 CHANGE WIRE BUNDLES W0386/W1034/W1046/ W1764/W1774 INSTALL NEW TOGGLE SWITCHES, RELAYS AND WIRE BUNDLES W1760 AND W1770 IN THE J2802 BOX ASSEMBLY AIRPLANES WITHOUT AIRSTAIRS CHANGE WIRE BUNDLES CHANGE WIRE BUNDLES W0368/W0386 W1764/W1774 CHANGE WIRE BUNDLES W0386/W1034/W1046/ W1764/W1774 INSTALL NEW TOGGLE SWITCHES, RELAYS AND WIRE BUNDLES W1760 AND W1770 IN THE J2802 BOX ASSEMBLY AIRPLANES WITH AIRSTAIRS 1308568 Original Issue: August 02, 2010 Revision 2: September 23, 2014 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 737-28A1227 Work - See page 1 for detalls. 14 of 287 ### Page 15 Commercial Airplanes 737 Service Bulletin Number: 737-28A1227 Original Issue: August 02, 2010 Revision 2: September 23, 2014 ATA System: 2822 SUBJECT: FUEL - Distribution - Center and Auxiliary Tank Boost Pumps Fuel Control System Un-Commanded On Relay Installation and Related Wiring Changes 1. PLANNING INFORMATION A. Effectivity 1. Airplanes Refer to Service Bulletin Index Document D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data. This service bulletin is for the airplanes shown below. Refer to PRR 35443-RS for data about this change. DESCRIPTIONCONFIGURATIONGROUP 737-100/200/200C airplanes from line number 1 thru 291.-1 737-200/200C airplanes that do not have auxiliary fuel tanks and do not have airstairs. -2 737-300/400/500 airplanes that do not have auxiliary fuel tanks and do not have airstairs. -3 737-200 airplanes that do not have auxiliary fuel tanks and have airstairs. -4 Airplanes that have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1228 Revision 1. 1 Airplanes that have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1228 revision 1. 2 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 15 of 287 ### Page 16 DESCRIPTIONCONFIGURATIONGROUP 737-300 airplanes that were delivered with an active auxiliary fuel tank or delivered with wiring provisions for an auxiliary fuel tank and do not have airstairs. -5 Airplanes that have removed or deactivated the auxiliary fuel tank, or only have wiring provision for an auxiliary fuel tank. 1 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision for an auxiliary fuel tank. 2 737-400 airplanes that were delivered with an active auxiliary fuel tank or delivered with wiring provision for an auxiliary fuel tank and do not have airstairs. -6 Airplanes that have removed or deactivated the auxiliary fuel tank, or only have wiring provision for an auxiliary fuel tank. 1 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision for an auxiliary fuel tank. 2 737-200 airplanes that were delivered with an active auxiliary fuel tank or delivered with wiring provision for an auxiliary fuel tank and with airstairs or airstair provisions. -7 Airplanes that have removed or deactivated the auxiliary fuel tank only and have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1228 Revision 1. 1 Airplanes that have removed or deactivated the auxiliary fuel tank and have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1228 Revision 1. 2 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision and activated the auxiliary fuel tank and have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1228 Revision 1. 3 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision and activated the auxiliary fuel tank and have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1228 Revision 1. 4 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 16 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 17 DESCRIPTIONCONFIGURATIONGROUP 737-200 airplanes that were delivered with an active auxiliary fuel tank or delivered with wiring provision for an auxiliary tank and with airstairs or airstairs provision. -8 Airplanes that have removed or deactivated the auxiliary fuel tank only and have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1228 Revision 1. 1 Airplanes that have removed or deactivated the auxiliary fuel tank and have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1228 Revision 1. 2 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision and activated the auxiliary fuel tank and have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1228 Revision 1. 3 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision and activated the auxiliary fuel tank and have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1228 Revision 1. 4 737-200/200C airplanes that do not have auxiliary fuel tanks and with airstairs or airstairs provisions. -9 Airplanes that have had the 65C38484-10 J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1228 Revision 1. 1 Airplanes that have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1228 Revision 1. 2 737-300/400/500 airplanes that do not have auxiliary fuel tanks and with airstairs or airstairs provisions. -10 Airplanes that have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1216 Revision 2. 1 Airplanes that have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1216 Revision 2. 2 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 17 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 18 DESCRIPTIONCONFIGURATIONGROUP 737-200/200C airplanes that do not have auxiliary fuel tanks and with airstairs or airstairs provisions. -11 Airplanes that have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1228 Revision 1. 1 Airplanes that have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1228 Revision 1. 2 737-300 airplanes that were delivered with an active auxiliary tank or delivered with wiring provision for auxiliary fuel tanks and with airstairs or airstairs provisions. -12 Airplanes that have removed or deactivated the auxiliary fuel tank and have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1216 Revision 2. 1 Airplanes that have removed or deactivated the auxiliary fuel tank only and have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1216 Revision 2. 2 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision and activated the auxiliary fuel tank and have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1216 Revision 2. 3 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision and activated the auxiliary fuel tank and have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1216 Revision 2. 4 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 18 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 19 DESCRIPTIONCONFIGURATIONGROUP 737-400 airplanes that were delivered with an active auxiliary fuel tank or delivered with wiring provision for an auxiliary fuel tank and with airstairs or airstairs provisions. -13 Airplanes that have removed or deactivated the auxiliary fuel tank and have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1216 Revision 2. 1 Airplanes that have removed or deactivated the auxiliary fuel tank and have a new J2802 Box Assembly installed in accordance with Service Bulletin 737-28A1216 Revision 2. 2 Airplanes delivery have kept the auxiliary fuel tank active or have completed the wiring provision and activated the auxiliary tank and have had the J2802 Box Assembly changed and installed in accordance with Service Bulletin 737-28A1216 Revision 2. 3 Airplanes that have kept the auxiliary fuel tank active or have completed the wiring provision and activated the auxiliary tank and have a new J2802 Box Assembly provided installed in accordance with Service Bulletin 737-28A1216 Revision 2. 4 Airplane Models: 737-100, 737-200, 737-200C, 737-300, 737-400, 737-500 GroupVariable Number 1PA001 - PA022 1PA099 1PA231 - PA232 1PC001 - PC005 1PG001 - PG075 1PG199 1PG201 - PG230 1PG251 - PG255 1PG271 - PG279 1PG301 - PG314 1PG331 - PG332 1PG351 - PG356 1PG375 1PG401 - PG403 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 19 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 20 GroupVariable Number 1PG431 - PG442 1PG471 - PG475 1PG501 - PG505 1PG571 - PG583 11PG584 - PG586 1PG621 - PG630 1PG651 - PG652 1PG701 - PG705 11PH001 11PH011 - PH013 11PH021 - PH024 1PH701 - PH715 1PH731 - PH732 1PH741 - PH742 11PH743 1PJ001 - PJ002 11PJ003 - PJ006 7PJ007 - PJ009 1PJ031 - PJ032 1PJ071 - PJ072 1PJ101 - PJ104 9PJ105 - PJ109 4PJ110 - PJ113 9PJ114 - PJ115 4PJ116 - PJ119 7PJ201 - PJ219 3PJ301 - PJ302 3PJ551 - PJ561 3PJ601 - PJ615 6PJ811 10PJ816 - PJ817 11PK026 - PK029 2PK041 - PK046 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 20 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 21 GroupVariable Number 11PK047 2PK048 - PK050 11PK051 2PK052 - PK053 11PK061 - PK067 7PK068 - PK070 11PK081 - PK082 11PK091 - PK099 11PK101 - PK103 11PK111 - PK120 11PK141 - PK146 11PK201 - PK204 11PK211 - PK223 11PK231 - PK241 11PK251 - PK256 7PK257 11PK258 11PK271 - PK274 11PK281 - PK289 11PK291 11PK301 - PK318 11PK341 11PK351 - PK355 7PK356 - PK360 11PK361 11PK391 2PK431 - PK433 11PK451 - PK452 11PK461 - PK469 11PK495 11PK501 7PK502 - PK504 11PK511 - PK515 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 21 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 22 GroupVariable Number 11PK519 11PK521 - PK528 11PK541 - PK565 11PK581 11PK591 - PK599 4PK601 - PK604 9PK605 - PK606 7PK607 - PK610 11PK611 - PK617 11PK621 - PK637 11PK641 - PK642 7PK661 11PK662 - PK666 11PK671 - PK681 11PK691 - PK697 11PK711 - PK716 11PK731 - PK765 11PK771 - PK779 11PK801 - PK804 9PK819 - PK827 9PK830 11PK861 - PK863 7PK871 - PK874 11PK881 - PK884 11PK901 - PK910 2PK911 - PK938 2PK971 - PK974 11PL001 - PL028 11PL061 11PL081 2PL101 - PL113 11PL151 11PL171 - PL172 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 22 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 23 GroupVariable Number 11PL201 - PL203 11PL221 11PL401 - PL408 7PL409 - PL410 11PL411 7PL412 11PL413 - PL417 7PL421 11PL441 11PL451 - PL456 11PL471 11PL491 8PL501 - PL506 11PL551 - PL562 11PL581 7PL601 - PL603 11PL611 11PL621 - PL626 7PL631 - PL632 1PL711 - PL712 1PL716 11PL717 - PL735 2PL736 - PL747 11PL756 2PL758 11PL761 - PL770 11PL781 - PL788 11PL793 1PL801 - PL803 11PM001 - PM006 11PM016 - PM017 11PM021 - PM023 11PM051 - PM066 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 23 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 24 GroupVariable Number 7PM101 - PM119 7PM141 - PM142 11PM171 11PM181 11PM251 - PM255 11PM281 - PM283 10PM381 - PM399 10PM401 - PM417 10PM541 - PM564 7PN001 - PN002 11PN021 - PN043 11PN081 - PN086 11PN101 - PN117 11PN131 - PN163 2PN401 - PN420 11PN431 - PN433 11PN451 - PN456 11PN471 - PN474 11PN481 11PN491 - PN493 11PN501 - PN502 11PN511 - PN512 7PN521 3PP001 - PP054 10PP101 3PP102 - PP169 3PP181 - PP199 10PP201 - PP205 10PP221 3PP231 - PP243 3PP281 - PP286 3PP301 - PP305 10PP351 - PP353 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 24 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 25 GroupVariable Number 10PP376 - PP384 10PP391 - PP393 3PP401 - PP440 5PP471 - PP475 12PP501 - PP520 10PP521 - PP522 3PP631 - PP634 10PP651 - PP652 3PP671 - PP689 5PP690 - PP694 3PP695 - PP699 3PP701 - PP706 5PP707 - PP716 3PP717 - PP733 3PP771 - PP779 10PP801 - PP808 10PP821 - PP827 10PP831 - PP848 10PP851 - PP852 3PP861 - PP877 10PP891 - PP899 10PP901 - PP936 10PP946 - PP948 10PP951 - PP952 3PP961 - PP967 3PP981 - PP991 10PP993 3PQ001 - PQ016 3PQ026 - PQ041 3PQ051 - PQ092 3PQ101 - PQ199 3PQ201 - PQ202 10PQ221 - PQ230 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 25 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 26 GroupVariable Number 3PQ231 - PQ237 10PQ241 - PQ243 10PQ251 - PQ267 10PQ281 - PQ291 3PQ292 - PQ297 10PQ298 3PQ299 3PQ301 - PQ307 3PQ331 - PQ332 3PQ341 - PQ348 10PQ361 - PQ373 10PQ391 - PQ395 10PQ401 - PQ418 10PQ421 3PQ431 - PQ438 10PQ447 - PQ448 3PQ451 3PQ454 3PQ471 10PQ472 - PQ475 3PQ479 - PQ481 3PQ486 - PQ487 3PQ491 - PQ493 3PQ771 - PQ772 3PQ791 - PQ793 3PQ801 - PQ805 3PQ931 - PQ935 10PQ951 10PQ971 - PQ997 10PR001 - PR017 10PR021 - PR030 3PR031 - PR034 3PR041 - PR045 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 26 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 27 GroupVariable Number 3PR061 - PR072 3PR077 - PR080 10PR081 - PR082 10PR091 - PR092 10PR096 10PR101 10PR121 - PR122 10PR131 - PR132 10PR141 - PR143 10PR161 - PR172 3PR181 10PS601 - PS631 10PS636 - PS638 10PS641 - PS642 3PS643 - PS644 10PS651 - PS657 3PS666 - PS669 3PS691 - PS692 3PS701 - PS706 3PS751 - PS799 10PS811 10PS836 - PS837 10PS841 - PS846 10PS851 - PS852 10PS856 12PS861 - PS863 12PS866 - PS868 10PS871 - PS874 10PS896 - PS897 3PS901 - PS941 12PS956 - PS957 10PS961 - PS963 10PS971 - PS978 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 27 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 28 GroupVariable Number 3PT001 - PT015 3PT021 - PT031 10PT041 - PT064 3PT101 - PT105 10PT121 - PT138 10PT146 - PT148 10PT161 - PT170 10PT181 - PT185 3PT186 - PT188 10PT211 - PT220 10PT295 3PT301 - PT309 3PT331 - PT360 3PT381 - PT399 3PT401 - PT438 10PT501 - PT517 3PT561 - PT565 3PT581 - PT586 3PT611 - PT621 3PT641 - PT644 3PT651 - PT656 10PT671 - PT672 3PT681 - PT685 3PT701 - PT703 3PT716 - PT717 10PT721 - PT725 3PT801 - PT834 3PT851 - PT854 10PT871 - PT886 3PT901 - PT930 3PT971 - PT973 3PT981 - PT985 10PT996 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 28 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 29 GroupVariable Number 3PU001 - PU025 10PU301 10PU311 - PU313 3PV001 - PV055 3PV201 - PV209 3PV226 - PV229 3PV231 - PV237 3PV271 - PV272 3PV281 - PV287 10PV296 10PV301 - PV302 3PV351 10PV356 - PV357 10PW001 - PW054 10PW061 3PW062 - PW068 10PW072 10PW086 - PW088 10PW091 - PW094 10PW101 - PW102 10PW106 10PW111 - PW120 10PW156 - PW157 10PW161 - PW171 3PW201 - PW252 10PW261 - PW268 10PW271 - PW276 10PW278 10PW281 - PW293 10PW296 10PW301 - PW327 3PW401 - PW408 3PW411 - PW418 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 29 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 30 GroupVariable Number 3PW421 - PW424 3PW431 - PW435 3PW441 - PW450 3PW461 - PW467 10PW501 - PW504 6PW511 - PW522 6PW524 3PW525 - PW529 6PW530 3PW531 - PW550 10PW556 - PW557 3PW561 - PW564 3PW571 - PW576 10PW591 - PW596 3PW611 - PW622 3PW631 - PW637 10PW661 - PW662 3PW681 - PW683 13PW701 - PW702 3PW711 - PW717 10PW741 - PW742 3PW761 3PW771 10PW831 10PW851 - PW856 1PX071 1PX701 1PY001 - PY008 1PY021 2PY022 1PY031 2PY036 - PY037 2PY046 - PY048 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 30 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 31 GroupVariable Number 11PY051 - PY053 2PY056 - PY057 11PY101 - PY103 2PY111 - PY113 2PY131 - PY135 2PY141 - PY143 2PY151 - PY154 2PY156 - PY157 11PY161 2PY162 2PY166 2PY191 2PY201 11PY221 - PY222 11PY231 2PY241 - PY244 2PY270 - PY275 11PY281 11PY286 1PY301 - PY304 1PY321 - PY323 1PY341 - PY346 1PY361 - PY362 1PY381 2PY401 2PY409 - PY410 11PY411 2PY421 - PY422 11PY441 2PY451 2PY461 - PY463 2PY591 - PY595 11PY611 - PY612 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 31 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 32 GroupVariable Number 11PY621 11PY631 11PY651 2PY671 - PY672 2PY721 11PY741 2. Spares Affected None. B. Concurrent Requirements The service bulletin(s) listed below must be done before or at the same time as this service bulletin: Group 1: Operators should contact Boeing to obtain engineering and accomplishment instructions for this modification and do the instructions. Group 2-13: DescriptionService BulletinCompany Replacement of the P5-2 Fuel System Module to Supply Low Fuel Pressure Mas- ter Caution Annunciation. 737-28A1210 Revision 2Boeing Group 3, 5-6, 10, 12-13: DescriptionService BulletinCompany Installation of the Auto Shutoff Protection for the Center and Auxiliary Fuel Tank Boost Pumps for 737-300/400/500 air- planes. 737-28A1216 Revision 2Boeing Group 2, 4, 7-9, 11: DescriptionService BulletinCompany Installation of the Auto Shutoff Protection for the Center and Auxiliary Fuel Tank Boost Pumps for 737-100/200/200C air- planes. 737-28A1228 Revision 1Boeing Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 32 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 33 C. Reason This service bulletin affects the 737-200/-200C/-300/-400/-500 airplanes with line numbers 292 thru 3132 that have center tanks, and center and auxiliary fuel tanks. Operators with 737-100/-200/-200C airplanes with line numbers 1 thru 291 should contact Boeing to obtain engineering and accomplishment instructions for this modification. This service bulletin is sent to give 'un-commanded on' protection for the fuel pump control system. Instructions are given to add one more relay, as a fail safe, for each fuel pump in the center and auxiliary fuel tanks. If this service bulletin is not done, the fuel pumps could run dry, which increases the pumps temperature and could cause an ignition source for fuel vapor in the fuel tank. Ignition of the flammable fuel vapors in the fuel tanks, could cause a fire or explosion which will put the airplane in an unsafe condition. The Boeing system safety assessment necessary for Special Federal Aviation Regulation (SFAR) 88, showed that electrical faults within the fuel tank pump system can cause a fuel pump to operate when the fuel pump switch is in the 'OFF' position. Boeing has developed a new system to prevent extended operation of the fuel tank boost pumps in this condition. This new system has a second relay to prevent the operation of a pump when its switch is in the 'OFF' position. The auto shutdown relay currently installed for each pump gives the same solution as the new additional relay, but is known to have caused in-service problems because its contacts have 'welded' closed and continued to let power be supplied. This condition is referred to as 'un-commanded on' (UCO) pump operation. This new second relay added to the existing fuel control circuit and interfaced with the P5-2 fuel control module, prevents UCO operation of the fuel boost pumps. The system senses if there is a voltage remaining in the fuel boost pump circuit and activates the UCO relay to remove the power. In the flight deck, the pump low pressure light in the P5-2 fuel control systems module, and master caution light come on when the fuel pump is at low pressure. No additional indication is provided for dry running pumps. Accomplishment of this service bulletin installs new UCO relays and toggle switches in the J2802 box assembly located in the Electronic Equipment Bay (E/E bay). This service bulletin also changes and adds new wire bundles that route from the J2802 box assembly to the P5 Forward Overhead Panel and the P6 Disconnect Panels. Installation of the new UCO relays for each pump will prevent "dry running" of the fuel pumps and reduce the risk of fuel tank fire or explosion. The Airworthiness Limitations (AWL) 28-AWL-24 (Center Tank) and 28-AWL-25 (Auxiliary Fuel Tank) for 737-100/200/200C airplanes, and AWL 28-AWL-23 (Center Tank) and 28-AWL-24 (Auxiliary Fuel Tank) for 737-300/400/500 airplanes listed in 737-100/200/200C/300/400/500 AWLs and Certification Maintenance Requirements (CMRs), D6-38278-CMR, are related to this service bulletin. Revision 1 was sent to give group configurations that describe the possible current status of auxiliary tanks for applicable airplanes in this service bulletin. Since the development of this service bulletin, operators could have removed or deactivated their auxiliary tank. This revision also tells operators that the J2802 Panel Assembly, part number 65C38484-12, which is included in the kits of concurrent Boeing service bulletins 737-28A1216 (for 737-300/400/500 airplanes) and 737-28A1228 (for 737-100/200/200C airplanes), is made with nutplates incorrectly positioned. These nutplates are related to the installation of relays R3334, R3336, R3338 and R3340. Because of their incorrect position, the related relays cannot be installed in accordance with Figures 1 and 5 of this service bulletin at the original issue. These related relays can be installed if their cutouts in the J2802 Panel Assembly are made larger to fit the body of the relays through them. Operators should make the changes shown in this service bulletin revision 01 to keep the installation of the relays the same as the design intent. Also, new fastener kits will be available from Boeing spares, 65C38537-6 (airplanes without auxiliary tank) and 65C38537-7 (airplanes with auxiliary tanks). The fasteners supplied in these kits were omitted from the 65C38537-1, -2 and -3 Top Kits listed in Paragraph 2.C.1., Kits/Parts. Only the missing screws Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 33 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 34 and washers to install the relays are in these kits, no other parts are included. Figures 1, 2, 5, and 6 are changed to give correct ground block locations for GDY001 and GDY002, and Figure 7 is changed to correct Thermofit Sleeve part number 61-74485-2008 to part number 61-74482-2007. Also Figures 3, 4, 7, and 8 are changed to give correct test switch nomenclature. This revision is also adding markers on the J2802 Box that identify the function of each of the switch installed. The data given in Information Notice 737-28A1227 IN 01, IN 02, and IN 05 was included in revision 1. Revision 2 is sent to align its accomplishment with the release of Boeing Service bulletins 737-28A1216 Revision 2 and 737-28A1228 Revision 1, for the installation of relays and toggle switches into the new design of J2802 Box Assembly and the related wiring, for airplanes with airstairs. Because of this condition, Boeing designed a different J2802 Box Assembly that can be installed on airplanes with airstairs without interference. This revision includes the different design and lets airplanes with airstairs to accomplish this service bulletin. As a result of the changes, airplanes with airstairs have been separated from those without airstairs and have been subsequently identified in new Groups 9 thru 13 and existing groups 4, 7 and 8. Airplanes without airstairs are identified in Groups 1 thru 3, 5 and 6. Boeing Fleet Team Digest (FTD) 737 FTD 28-04004 is related to this service bulletin. D. Description Remove equipment to get access to the J2802 box assembly on the E2 and E3 support posts in the E/E bay, P6 Load Control Center in the flight compartment/control cabin, and P6 disconnect panels. Remove the cover from the J2802 box assembly and install wire bundles W1760 and W1770, relays and toggle switches. Change wire bundles W0368, W0386, W1034, W1046, W1764 and W1774, as applicable, between the P6 disconnect panels and J2802 box assembly. Check the continuity of all the new and changed wires and do a functional test to make sure the changed fuel control system operates correctly. Operators with Group 1 airplanes should contact Boeing to obtain engineering and accomplishment instructions for this modification and do the instructions. Revision 1 - No more work is necessary on the airplane(s) changed in accordance with the original issue of this service bulletin and also if the relay cutouts in the J2802 Box Assembly have been made larger, as applicable, to fit the body of relays R3334, R3336, R3338, R3340, and the screws BACS12HN08-10 were used for the installation of the relays, as described in Information Notice 737-28A1227 IN 05. However, during the regular maintenance, operators have to install the markers that identify the function of the switches installed on the J2802 box, in accordance with Figure 1 or Figure 5, as applicable. Revision 2 - – More work is necessary for airplanes in Groups 1 thru 3, 5 and 6 changed in accordance with Original Issue or Revision 1 of this service bulletin that did not install labels on the J2802 Box Assembly. Do the work identified in the work instructions. – Airplanes in Group 4 and 7 thru 13 with airstairs that were originally included in Groups 1 thru 8 but could not accomplish the Original Issue or Revision 1 of this service bulletin, because concurrent Boeing Service Bulletins, 737-28A1216 and 737-28A1228, could not be accomplished until Boeing Service Bulletin 737-28A1216 Revision 2 and 737-28A1228 Revision 1 had been released. Operators can now accomplish the work in accordance with this revision of this service bulletin. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 34 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 35 NOTE: As a result of the changes, airplanes with airstairs have been separated from those without airstairs and have been subsequently identified as new Groups 9 thru 13 and existing groups 4, 7 and 8. Airplanes without airstairs are identified in Groups 1 thru 3, 5 and 6. The work in this service bulletin is done in the maintenance zone(s) given below. Group 1: Affected Maintenance Zones ZoneModel 1-1, 1-2, 2-5737-100, 737-200, 737-200C Group 2, 11: Affected Maintenance Zones ZoneModel 1-1, 1-2, 2-5737-200, 737-200C Group 3, 10: Affected Maintenance Zones ZoneModel 101, 102, 205737-300, 737-400, 737-500 Group 4, 7-9: Affected Maintenance Zones ZoneModel 1-1, 1-2, 2-5737-200 Group 5, 12: Affected Maintenance Zones ZoneModel 101, 102, 205737-300 Group 6, 13: Affected Maintenance Zones ZoneModel 101, 102, 205737-400 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 35 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 36 E. Compliance Federal Aviation Administration (FAA) Notice of Proposed Rule Making 2010-NM-189-AD, is related to this service bulletin. Boeing recommends that the change given in this service bulletin be done within 60 months after the original issue date of this service bulletin. NOTE: For Group 1 airplanes: In order to accomplish the change, operators should contact Boeing to obtain engineering and accomplishment instructions and do the instructions. F. Approval This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes. If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin. G. Manpower The table below shows an estimate of the task-hours necessary to do this service bulletin 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 examine the work — Time to cure the materials — Time to make the parts — Time to find the tools. Group 1: Operators should contact Boeing to obtain engineering and accomplishment instructions for this modification and do the instructions. Group 2: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 2.252.251FIGURE 1 --1FIGURE 2 (a) 4.008.002FIGURE 3 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 36 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 37 Group 2: Elapsed Hours Task-HoursNumber of Persons Task 4.008.002FIGURE 4 --1FIGURE 9 (a) 3.406.802FIGURE 10 3.406.802FIGURE 11 0.250.251FIGURE 30 0.500.501Test 1.503.002Close Access 20.838.60TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 7-8, Configuration 1: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 3.003.001FIGURE 31 --1FIGURE 33 (a) 4.008.002FIGURE 43 4.008.002FIGURE 44 --1FIGURE 37 (a) 3.406.802FIGURE 10 3.406.802FIGURE 11 0.250.251FIGURE 42 0.500.501Test 1.503.002Close Access 21.5539.35TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 7-8, Configuration 2: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 37 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 38 Group 7-8, Configuration 2: Elapsed Hours Task-HoursNumber of Persons Task 3.001.251FIGURE 32 --1FIGURE 33 (a) 4.008.002FIGURE 43 4.008.002FIGURE 44 --1FIGURE 37 (a) 3.406.802FIGURE 10 3.406.802FIGURE 11 0.250.251FIGURE 42 0.500.501Test 1.503.002Close Access 21.5537.60TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 3; Group 5-6, Configuration 1: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 2.252.251FIGURE 1 --1FIGURE 2 (a) 4.008.002FIGURE 3 4.008.002FIGURE 4 --1FIGURE 12 (a) 3.406.802FIGURE 13 3.406.802FIGURE 14 0.250.251FIGURE 30 0.500.501Test 1.503.002Close Access 20.8038.60TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 38 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 39 Group 4, 9, Configuration 1: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 3.003.001FIGURE 31 --1FIGURE 33 (a) 4.008.002FIGURE 43 4.008.002FIGURE 44 --1FIGURE 15 (a) 3.406.802FIGURE 16 3.406.802FIGURE 17 0.250.251FIGURE 42 0.500.501Test 1.503.002Close Access 21.5539.35TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 4, 9, Configuration 2: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 1.251.251FIGURE 32 --1FIGURE 33 (a) 4.008.002FIGURE 43 4.008.00FIGURE 44 --1FIGURE 15 (a) 3.406.802FIGURE 16 3.406.802FIGURE 17 0.250.251FIGURE 42 0.500.501Test 1.503.002Close Access 19.8037.60TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 39 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 40 Group 5, Configuration 2: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 3.553.551FIGURE 5 --1FIGURE 6 (a) 8.0016.002FIGURE 7 8.0016.002FIGURE 8 --1FIGURE 18 (a) 5.5011.002FIGURE 19 5.5011.002FIGURE 20 0.250.251FIGURE 30 1.101.101Test 1.503.002Close Access 34.9064.90TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 6, Configuration 2: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 3.553.551FIGURE 5 --1FIGURE 6 (a) 8.0016.002FIGURE 7 8.0016.002FIGURE 8 --1FIGURE 21 (a) 5.5011.002FIGURE 22 5.5011.002FIGURE 23 0.250.251FIGURE 30 1.101.101Test 1.503.002Open Access 34.9064.90TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 40 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 41 Group 7, Configuration 3: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 5.055.051FIGURE 34 --1FIGURE 36 (a) 8.0016.002FIGURE 45 8.0016.002FIGURE 46 --1FIGURE 41 (a) 5.5011.002FIGURE 25 5.5011.002FIGURE 26 0.250.251FIGURE 42 1.101.101Test 1.5032Open Access 36.4066.40TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 7, Configuration 4: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 1.551.551FIGURE 35 --1FIGURE 36 (a) 8.0016.002FIGURE 45 8.0016.002FIGURE 46 --1FIGURE 41 (a) 5.5011.002FIGURE 25 5.5011.002FIGURE 26 0.250.251FIGURE 42 1.101.101Test 1.503.002Open Access 32.9062.90TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 41 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 42 Group 8, Configuration 3: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 5.055.051FIGURE 34 --1FIGURE 36 (a) 8.0016.002FIGURE 45 8.0016.002FIGURE 46 --1FIGURE 27 (a) 5.5011.002FIGURE 28 5.5011.002FIGURE 29 0.250.251FIGURE 42 1.101.101Test 1.503.002Open Access 36.4066.40TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 8, Configuration 4: Elapsed Hours Task-HoursNumber of Persons Task 1.503.002Open Access 1.551.551FIGURE 35 --1FIGURE 36 (a) 8.0016.002FIGURE 45 8.0016.002FIGURE 46 --1FIGURE 27 (a) 5.5011.002FIGURE 28 5.5011.002FIGURE 29 0.250.251FIGURE 42 1.101.101Test 1.53.002Open Access 32.9062.90TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 42 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 43 Group 10, 12-13, Configuration 1: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 3.003.001FIGURE 31 --1FIGURE 33 (a) 4.008.002FIGURE 43 4.008.002FIGURE 44 --1FIGURE 38 (a) 3.406.802FIGURE 13 3.406.802FIGURE 14 0.250.251FIGURE 42 0.500.501Test 1.503.002Close Access 21.5539.35TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 10, 12-13, Configuration 2: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 1.251.251FIGURE 32 --1FIGURE 33 (a) 4.008.002FIGURE 43 4.008.002FIGURE 44 --1FIGURE 38 (a) 3.406.802FIGURE 13 3.406.802FIGURE 14 0.250.251FIGURE 42 1.101.101Test 1.503.002Close Access 19.8037.60TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 43 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 44 Group 11, Configuration 1: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 3.003.001FIGURE 31 --1FIGURE 33 (a) 4.008.002FIGURE 43 4.008.002FIGURE 44 --1FIGURE 37 (a) 3.406.802FIGURE 10 3.406.802FIGURE 17 0.250.251FIGURE 42 0.500.501Test 1.503.002Close Access 21.5539.35TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 11, Configuration 2: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 1.251.251FIGURE 32 --1FIGURE 33 (a) 4.008.002FIGURE 43 4.008.002FIGURE 44 --1FIGURE 37 (a) 3.406.802FIGURE 10 3.406.802FIGURE 17 0.250.251FIGURE 42 0.50.51Test 1.503.002Close Access 19.8037.60TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 44 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 45 Group 12, Configuration 3: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 5.055.051FIGURE 34 --1FIGURE 36 (a) 8.0016.002FIGURE 45 8.0016.002FIGURE 46 --1FIGURE 39 (a) 5.5011.002FIGURE 19 5.5011.002FIGURE 20 0.250.251FIGURE 42 1.101.101Test 1.503.002Close Access 36.4066.40TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 12, Configuration 4: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 1.551.551FIGURE 35 --1FIGURE 36 (a) 8.0016.002FIGURE 45 8.0016.002FIGURE 46 --1FIGURE 39 (a) 5.5011.002FIGURE 19 5.5011.002FIGURE 20 0.250.251FIGURE 42 1.101.101Test 1.503.002Close Access 32.9062.90TOTAL FOR EACH AIRPLANE ENGINE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 45 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 46 Group 13, Configuration 3: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 5.055.051FIGURE 34 --1FIGURE 36 (a) 8.0016.002FIGURE 45 8.0016.002FIGURE 46 --1FIGURE 40 (a) 5.5011.002FIGURE 22 5.5011.002FIGURE 23 0.250.251FIGURE 42 1.101.101Test 1.532Close Access 36.4066.40TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. Group 13, Configuration 4: Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 1.551.551FIGURE 35 --1FIGURE 36 (a) 8.0016.002FIGURE 45 8.0016.002FIGURE 46 --1FIGURE 40 (a) 5.5011.002FIGURE 22 5.5011.002FIGURE 23 0.250.251FIGURE 42 1.101.101Test 1.503.002Close Access 32.9062.90TOTAL FOR EACH AIRPLANE (a) This figure shows wire routes only. See the related wire connection figures for task hours. For airplanes that have not installed labels on the J2802 Box Assembly in accordance with the Original Issue or Revision 1 of this service bulletin. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 46 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 47 Group 2-3; Group 5-6, Configuration 1: Elapsed HoursTask HoursNumber of PersonsTask 0.350.351Open Access 0.500.501FIGURE 47 0.350.351Close Access 1.201.20TOTAL FOR EACH AIRPLANE Group 5-6, Configuration 2: Elapsed HoursTask HoursNumber of PersonsTask 0.350.351Open Access 0.500.501FIGURE 48 0.350.351Close Access 1.201.20TOTAL FOR EACH AIRPLANE H. Weight and Balance Changes Group 1: Operators should contact Boeing to obtain engineering and accomplishment instructions for this modification and do the instructions. Group 2-4; Group 5-7, Configuration 1; Group 7, Configuration 2; Group 8, Config- uration 1-2: Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane +1,850+7737-200 +1,540+7737-300 +1,040+7737-400 +1,920+7737-500 Group 5-6, Configuration 2; Group 7, Configuration 3-4; Group 8, Configuration 3- 4: Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane +2,640+10737-200 +2,200+10737-300 +1,480+10737-400 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 47 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 48 Group 9, 11: Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane +1,850+7737-200 +1,850+7737-200C Group 10: Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane +1,540+7737-300 +1,040+7737-400 +1,920+7737-500 Group 12: Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane +2,200+10737-300 Group 13: Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane +1,480+10737-400 I. Electrical Load Data 1. Direct Current (DC) Loads Group 1: Operators should contact Boeing to obtain engineering and accomplishment instructions for this modification and do the instructions. Group 2-4; Group 5-7, Configuration 1; Group 7, Configuration 2; Group 8, Configuration 1-2; Group 9-11; Group 12, Configuration 1-2; Group 13, Configuration 1-2: BusAmperesCircuit Breaker 28V DC Bus 1+0.25C64 28V DC Bus 2+0.25C65 Group 5-6, Configuration 2; Group 7, Configuration 3-4; Group 8, Configuration 3-4; Group 12, Configuration 3-4; Group 13, Configuration 3-4: BusAmperesCircuit Breaker 28V DC Bus 1+0.50C64 28V DC Bus 2+0.50C65 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 48 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 49 2. Alternating Current (AC) Loads No Change. 3. Type Continuous. J. References 1. Existing Data: a. Engineering Change Memo PRR 35443-RS b. Boeing Service Bulletin 737-28A1210, 737-28A1216, 737-28A1228 c. Federal Aviation Administration (FAA) Notice of Proposed Rule Making (NPRM) 2010-NM-189-AD d. Standard Overhaul Practices Manual (SOPM) 20-41-02, 20-50-01, 20-50-05, 20-50-10 e. Standard Wiring Practices Manual (SWPM) 20-10-11, 20-10-12, 20-10-15, 20-10-18, 20-10-19, 20-20-11, 20-30-11, 20-30-12, 20-30-17, 20-30-22, 20-60-08, 20-60-09, 20-61-11, 20-81-19 f. 737 Fleet Team Digest (FTD) 28-04004 g. 737-100/200 Aircraft Maintenance Manual (AMM) 12-31-11, 24-22-00, 24-31-11, 25-11-00, 25-16-11, 25-31-11, 25-31-51, 25-51-01, 28-22-00, 32-00-01, 52-48-41, 52-61-00, 52-61-100 h. 737-300/400/500 Aircraft Maintenance Manual (AMM) 12-31-11, 24-22-00, 24-31-11, 25-10-00, 25-11-21, 25-31-11, 25-51-01, 32-00-01, 52-48-41, 52-61-10 i. 737-100/200 Structural Repair Manual (SRM) 51-40-02 j. 737-300 Structural Repair Manual (SRM) 51-40-02 k. 737-400 Structural Repair Manual (SRM) 51-40-02 l. 737-500 Structural Repair Manual (SRM) 51-40-02 m. 737-100/200 Wiring Diagram 737-100/200 WDM 28-23-01, 737-100/200 WDM 28-23-02 n. 737-300/400/500 Wiring Diagram 737-300/400/500 WDM 28-23-01, 737-300/400/500 WDM 28-23-02 2. Data Supplied with this Service Bulletin: None. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 49 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 50 3. Installation Drawings Used in the Preparation of this Service Bulletin: TitleDrawing Number KIT - EQUIPMENT / WIRE INSTALLATION, J2802 PANEL65C38484 This drawing was used to prepare this service bulletin. This drawing is not necessary to make the specified changes, and is not supplied with this service bulletin. This drawing may not be applicable to all airplane configurations or operators. K. Publications Affected 1. Publications: Chapter-SectionPublication 28-22737-100/200, 737-300/400/500 Aircraft Maintenance Manual 28-23737-100/200, 737-300/400/500 Wiring Diagram Manual 28-22737-100/200, 737-300/400/500 Illustrated Parts Catalog 28-23737-100/200, 737-300/400/500 System Schematic Manual Section C., Fuel Systems Airworthiness Limitations 737-100/200/200C300/400/500 Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), D6-38278-CMR 2. Damage Tolerance Based Structural Inspections: Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary. L. Interchangeability and Intermixability of Parts Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts. M. Software Accomplishment Summary Not affected. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 50 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 51 2. MATERIAL INFORMATION A. Material - Price and Availability Boeing can supply the kits shown in Paragraph 2.C., Parts Necessary for Each Airplane. Operators are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin. The kits are subject to the terms and conditions of the Boeing standard purchase order acknowledgment. Prices are in United States Dollars. Terms: Net 30 days. Reference this service bulletin and submit your purchase order by one of these methods: 1. Order on-line via ATA Spec 2000 or The Boeing PART Page 2. Fax to (206) 662-7145 NOTE: It is recommended that operators refer to the Group Configuration table in Paragraph 1.A., Effectivity and the logic diagram in APPENDIX A to help select the kit(s) to order. 1. 2. Airplanes in Group 5-6 Configuration 1, that plan to activate the auxiliary tank at a later time, Top Kits 65C38537-2 and 65C38537-7 are necessary. 3. Airplanes in Group 7-8 Configuration 1 and 2, Group 12-13 Configuration 1 and 2, that plan to activate the auxiliary tank at a later time, Top Kits 65C38537-3 and 65C38537-7 are necessary. Group 1: Operators should contact Boeing to obtain engineering and accomplishment instructions for this modification and do the instructions. Group 2-3; Group 5-6, Configuration 1: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Revision 02 date of this Ser- vice Bulletin (US Dollars) ROLT as of the Revision 02 date of this Service Bulletin (Calendar Days) QTYDateNameKit Number (Not available for procurement)Boost Pump, Fuel Un- commanded On - Top Kit, Center Tank 737/100/200/300/400/500 65C38537-1 (a) (Not available for procurement)Boost Pump, Fuel Un- commanded On - Top Kit, Center & Auxiliary Tanks 65C38537-6 (b) Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 51 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 52 Group 2-3; Group 5-6, Configuration 1: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Revision 02 date of this Ser- vice Bulletin (US Dollars) ROLT as of the Revision 02 date of this Service Bulletin (Calendar Days) QTYDateNameKit Number $3,980.00Replacement Kit - Boost Pump, Fuel Un- commanded On Center Without Aux Tank 65C38537-8 (c) $317.00Replacement Kit - Boost Pump, Fuel Un- commanded On Center Tank Without Aux Tank 65C38537-13 (d) $296.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-17 (e) $317.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-20 (f) (a) This Top Kit is replaced by Top Kit 65C38537-8. Operators that have already got Top Kit 65C38537-1, but have not accomplished this service bulletin, Top Kit 65C38537-13 is also necessary. Operators that have already got Top Kits 65C38537-1 and 65C38537-6, but have not accomplished this service bulletin, Supplemental Kit 65C37854-20 is also necessary. Top Kits 65C38537-1 and 65C38537-13 are equivalent to new Top Kit 65C38537-8. Top Kits 65C38537-1, 65C38537-6 plus Supplemental Kit 65C37854-20 are equivalent to new Top Kit 65C38537-8. (b) This Top Kit is replaced by Top Kit 65C38537-13. Operators that have already received Top Kits 65C38537- 1 and 65C38537-6, but have not accomplished this service bulletin, Supplemental Kit 65C37854-20 is also necessary. Top Kits 65C38537-1, 65C38537-6 plus Supplemental Kit 65C37854-20 are equivalent to new Top Kit 65C38537-8. (c) This Top Kit is necessary for operators that have not got Top Kit 65C38537-1 or Top Kit 65C38537-6 and have not accomplished this service bulletin. Top Kit 65C38537-8 replaces Top Kits 65C38537-1, 65C38537- 6 and 65C38537-13. Top Kit 65C38537-1 plus Top Kit 65C38537-13 and Top Kits 65C38537-1, 65C38537- 6 plus Supplemental Kit 65C37854-20 are equivalent to new Top Kit 65C38537-8. (d) This Top Kit is replaced by Top Kit 65C38537-8. Operators that have already got Top Kit 65C38537-1, but have not accomplished this service bulletin, Top Kit 65C38537-13 is also necessary. Top Kit 65C38537- 13 replaces Top Kit 65C38537-6. (e) This Supplemental Kit is necessary for each airplane that has accomplished the Original Issue or Revision 1 of this service bulletin. (f) This Supplemental Kit is necessary for operators that have got Top Kits 65C38537-1 and 65C38537-6. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 52 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 53 Group 4; Group 7, Configuration 1-2; Group 8, Configuration 1-2; Group 9-11; Group 12, Configuration 1-2; Group 13, Configuration 1-2: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Revision 02 date of this Ser- vice Bulletin (US Dollars) ROLT as of the Revision 02 date of this Service Bulletin (Calendar Days) QTYDateNameKit Number (Not available for procurement)Boost Pump, Fuel Un- commanded On - Top Kit, Center Tank 737/100/200/300/400/500 65C38537-1 (a) (Not available for procurement)Boost Pump, Fuel Un- commanded On - Top Kit, Center & Auxiliary Tanks 65C38537-6 (b) $4,060.00Replacement Kit - Boost Pump, Fuel Un- commanded On Center Without Aux Tank 65C38537-9 (c) $296.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-17 (d) $415.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-18 (e) (a) This Top Kit is replaced by Top Kit 65C38537-9. Operators that have already got Top Kit 65C38537-1, but have not accomplished this service bulletin, Supplemental Kit 65C37854-18 is also necessary. Oper- ators that have already got Top Kits 65C38537-1 and 65C38537-6, but have not accomplished this service bulletin, Supplemental Kit 65C37854-18 is also necessary. Top Kit 65C38537-1 plus Supplemental Kit 65C37854-18 and Top Kits 65C38537-1, 65C38537-6 plus Supplemental Kit 65C37854-18 are equivalent to Top Kit 65C38537-9. (b) Operators that have already got Top Kits 65C38537-1 and 65C38537-6, but have not accomplished this service bulletin, Supplemental Kit 65C37854-18 is also necessary. Top Kits 65C38537-1, 65C38537-6 plus Supplemental Kit 65C37854-18 are equivalent to new Top Kit 65C38537-9. (c) This Top Kit is necessary for operators that have not got Top Kit 65C38537-1 or Top Kit 65C38537-6 and have not accomplished this service bulletin. New Top Kit 65C38537-9 replaces Top Kits 65C38537-1 and 65C38537-6. Top Kit 65C38537-1 plus Supplemental Kit 65C37854-18 and Top Kits 65C38537-1, 65C38537-6 plus Supplemental Kit 65C37854-18 are equivalent to new Top Kit 65C38537-9. (d) This Supplemental Kit is necessary for each airplane that has accomplished the Original Issue or Revision 1 of this service bulletin. (e) This Supplemental Kit is necessary for operators that have got Top Kit 65C38537-1, or Top Kits 65C38537- 1 plus 65C38537-6. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 53 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 54 Group 5-6, Configuration 2: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Revision 02 date of this Ser- vice Bulletin (US Dollars) ROLT as of the Revision 02 date of this Service Bulletin (Calendar Days) QTYDateNameKit Number (Not available for procurement)Boost Pump, Fuel Un- commanded On - Top Kit, Center & Auxiliary Tanks 65C38537-2 (a) $237.00177Boost Pump, Fuel Un- commanded On - Top Kit, Center & Auxiliary Tanks 65C38537-7 (b) $3,742.00Replacement Kit - Boost Pump, Fuel Un- commanded On, Cen- ter & Auxiliary Tanks 65C38537-10 (c) $296.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-17 (d) (a) This Top Kit is replaced by Top Kit 65C38537-10. Operators that have already got Top Kit 65C38537-2, but have not accomplished this service bulletin, Top Kit 65C38537-7 and Supplemental Kit 65C37854-17 are also necessary. Operators that have already got Top Kits 65C38537-2 and 65C38537-7, but have not accomplished this service bulletin, Supplemental Kit 65C37854-17 is also necessary. Top Kits 65C38537- 2, 65C38537-7 plus Supplemental Kit 65C37854-17 are equivalent to Top Kit 65C38537-10. (b) Operators that have already got Top Kits 65C38537-2 and 65C38537-7, but have not accomplished this service bulletin, Supplemental Kit 65C37854-17 is also necessary. Top Kits 65C38537-2, 65C38537-7 plus Supplemental Kit 65C37854-17 are equivalent to Top Kit 65C38537-10. (c) This Top Kit is necessary for operators that have not got Top Kit 65C38537-2 or Top Kit 65C38537-7 and have not accomplished this service bulletin. Top Kit 65C38537-10 replaces Top Kits 65C38537-2 and 65C38537-7. Top Kits 65C38537-2, 65C38537-7 plus Supplemental Kit 65C37854-17 are equivalent to new Top Kit 65C38537-10. (d) This Supplemental Kit is necessary for each airplane that has accomplished the original issue of this service bulletin or already got Top Kit 65C38537-2 or Top Kits 65C38537-2 plus 65C38537-7. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 54 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 55 Group 12, Configuration 3-4; Group 13, Configuration 3-4: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Revision 02 date of this Ser- vice Bulletin (US Dollars) ROLT as of the Revision 02 date of this Service Bulletin (Calendar Days) QTYDateNameKit Number (Not available for procurement)Boost Pump, Fuel Un- commanded On - Top Kit, Center & Auxiliary Tanks 65C38537-2 (a) $237.00177Boost Pump, Fuel Un- commanded On - Top Kit, Center & Auxiliary Tanks 65C38537-7 (b) $4,313.00Replacement Kit - Boost Pump, Fuel Un- commanded On, Cen- ter & Auxiliary Tanks 65C38537-11 (c) $296.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-17 (d) $518.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-19 (e) (a) This Top Kit is replaced by Top Kit 65C38537-11. Operators that have already got Top Kit 65C38537-2, but have not accomplished this service bulletin, Supplemental Kit 65C37854-19 is also necessary. Oper- ators that have already got Top Kits 65C38537-2 and 65C38537-7, but have not accomplished this service bulletin, Supplemental Kit 65C37854-19 is also necessary. Top Kits 65C38537-2, 65C38537-7 plus Sup- plemental Kit 65C37854-19 and Top Kit 65C38537-2 plus Supplemental Kit 65C37854-19 are equivalent to new Top Kit 65C38537-11. (b) Operators that have already received Top Kits 65C38537-2 plus Top Kit 65C38537-7, but have not accom- plished this service bulletin, Supplemental Kit 65C37854-19 is also necessary. Top Kits 65C38537-2, 65C38537-7 plus Supplemental Kit 65C37854-19 are equivalent to new Top Kit 65C38537-11. (c) This Top Kit is necessary for operators that have not got Top Kit 65C38537-2 or Top Kit 65C38537-7 and have not accomplished this service bulletin. New Top Kit 65C38537-11 replaces Top Kits 65C38537-2 and 65C38537-7. Top Kit 65C38537-2 plus Supplemental Kit 65C37854-19, and Top Kits 65C38537-2, 65C38537-7 plus Supplemental Kit 65C37854-19 are equivalent to new Top Kit 65C38537-11. (d) This Supplemental Kit is necessary for each airplane that has accomplished the Original Issue or Revision 1 of this service bulletin. (e) This Supplemental Kit is necessary for operators that have got Top Kit 65C38537-2 or Top Kits 65C38537- 2 plus 65C38537-7. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 55 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 56 Group 7, Configuration 3-4; Group 8, Configuration 3-4: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Revision 02 date of this Ser- vice Bulletin (US Dollars) ROLT as of the Revision 02 date of this Service Bulletin (Calendar Days) QTYDateNameKit Number (Not available for procurement)Boost Pump, Fuel Un- commanded On - Top Kit, Center & Auxiliary Tanks 65C38537-3 (a) $237.00177Boost Pump, Fuel Un- commanded On - Top Kit, Center & Auxiliary Tanks 65C38537-7 (b) $4,434.00Replacement Kit - Boost Pump, Fuel Un- commanded On, Cen- ter & Auxiliary Tanks 65C38537-12 (c) $296.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-17 (d) $518.00Supplemental Kit - New Labels For J2802 Relay Box 65C37854-19 (e) (a) This Top Kit is replaced by Top Kit 65C38537-12. Operators that have already got Top Kit 65C38537-3, but have not accomplished this service bulletin, Supplemental Kit 65C37854-19 is also necessary. Oper- ators that have already received Top Kits 65C38537-3 and 65C38537-7, but have not accomplished this service bulletin, Supplemental Kit 65C37854-19 is also necessary. Top Kits 65C38537-2, 65C38537-7 plus Supplemental Kit 65C37854-19 and Top Kit 65C38537-2 plus Supplemental Kit 65C37854-19 are equivalent to new Top Kit 65C38537-11. (b) Operators that have already got Top Kits 65C38537-3 plus 65C38537-7, but have not accomplished this service bulletin, Supplemental Kit 65C37854-19 is also necessary. Top Kits 65C38537-3, 65C38537-7 plus Supplemental Kit 65C37854-19 are equivalent to new Top Kit 65C38537-12. (c) This Top Kit is necessary for operators that have not got Top Kit 65C38537-3 or Top Kit 65C38537-7 and have not accomplished this service bulletin. New Top Kit 65C38537-12 replaces Top Kits 65C38537-3 and 65C38537-7. Top Kit 65C38537-3 plus Supplemental Kit 65C37854-19 and Top Kits 65C38537-3, 65C38537-7 plus Supplemental Kit 65C37854-19 are equivalent to new Top Kit 65C38537-12. (d) This Supplemental Kit is necessary for each airplane that has accomplished the Original Issue or Revision 1 of this service bulletin. (e) This Supplemental Kit is necessary for operators that have got Top Kit 65C38537-3 or Top Kits 65C38537- 3 plus 65C38537-7. 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. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 56 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 57 B. Industry Support Information Boeing warranty remedies are not available for the configuration changes given in this service bulletin. 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. INACTIVE Kit 65C38537 NotesNameQTYNew Part Number -6-3-2-1 (a)BOOST PUMP, FUEL UNCOMMANDED ON - TOP KIT, CENTER TANK 737/100/200/300/400/500 ...-65C38537-1 (a)BOOST PUMP, FUEL UNCOMMANDED ON - TOP KIT, CENTER & AUXILIARY TANKS ..-.65C38537-2 (a)BOOST PUMP, FUEL UNCOMMANDED ON - TOP KIT, CENTER & AUXILIARY TANKS .-..65C38537-3 (a)BOOST PUMP, FUEL UNCOMMANDED ON - TOP KIT, CENTER TANK WITHOUT AUX TANK -...65C38537-6 WIRE KIT - UNCOMMANDED ON RELAYS - NO AUX TANK CONFIGURATION ...161-74482-1 WIRE KIT - UNCOMMANDED ON RELAYS - AUX TANK CONFIGURATION - 737-300/-400/- 500 ..1.61-74482-2 WIRE KIT - UNCOMMANDED ON RELAYS - AUX TANK CONFIGURATION - 737-100/-200 .1..61-74482-3 WIRE BUNDLE INSTALLATION FOR AIR- PLANES WITHOUT AUX TANK - PUMP UN- COMMANDED ON ...165C38510-1 WIRE BUNDLE INSTALLATION FOR AIR- PLANES WITH AUX TANK - PUMP UNCOM- MANDED ON .11.65C38510-2 SCREW8...BACS12HN08-9 WASHER, PLAIN8...NAS1149DN816H (a) Kit no longer available for purchase. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 57 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 58 ACTIVE Kit 65C38537 NotesExisting Part Number NameQTYNew Part Number -7 BOOST PUMP, FUEL UNCOM- MANDED ON - TOP KIT, CENTER & AUXILIARY TANKS -65C38537-7 (a)Screw16BACS12HN08-10 WASHER, PLAIN16NAS1149DN816H (a) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. ACTIVE Kit 65C38537 NotesExisting Part Number NameQTYNew Part Number -13-12-11-10-9-8 REPLACEMENT KIT - BOOST PUMP, FUEL UN- COMMANDED ON, CENTER WITH- OUT AUX TANK .....-65C38537-8 REPLACEMENT KIT - BOOST PUMP, FUEL UN- COMMANDED ON, CENTER WITH- OUT AUX TANK ....-.65C38537-9 REPLACEMENT KIT - BOOST PUMP, FUEL UN- COMMANDED ON, CENTER & AUXIL- IARY TANKS ...-..65C38537-10 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 58 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 59 ACTIVE Kit 65C38537 NotesExisting Part Number NameQTYNew Part Number -13-12-11-10-9-8 REPLACEMENT KIT - BOOST PUMP, FUEL UN- COMMANDED ON, CENTER & AUXIL- IARY TANKS ..-...65C38537-11 REPLACEMENT KIT - BOOST PUMP, FUEL UN- COMMANDED ON, CENTER & AUXIL- IARY TANKS .-....65C38537-12 REPLACEMENT KIT - BOOST PUMP, FUEL UN- COMMANDED ON, CENTER TANK WITHOUT AUX TANK -.....65C38537-13 WIRE KIT - UN- COMMANDED ON RELAYS - NO AUX TANK CONFIGU- RATION ....1161-74482-1 WIRE KIT - UN- COMMANDED ON RELAYS - AUX TANK CONFIGU- RATION - 737- 300/-400/-500 ..11..61-74482-2 WIRE KIT - UN- COMMANDED ON RELAYS - AUX TANK CONFIGU- RATION - 737- 100/-200 .1....61-74482-3 J2802 Relay Box Label - CTR-L 11111165C38484-31 J2802 Relay Box Label - CTR-R 11111165C38484-32 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 59 of 287 BOEING SERVICE BULLETIN 737-28A1227 ### Page 60 ACTIVE Kit 65C38537 NotesExisting Part Number NameQTYNew Part Number -13-12-11-10-9-8 J2802 Relay Box Label - NOT-USED 22222265C38484-33 J2802 Relay Box Label - AUX-FWD 11111165C38484-34 J2802 Relay Box Label - AUX-AFT 11111165C38484-35 J2802 Relay Box Label - UN-COM- MANDED-ON 11111165C38484-45 WIRE BUNDLE IN- STALLATION FOR AIRPLANES WITHOUT AUX TANK - PUMP UN- COMMANDED ON ....1165C38510-1 WIRE BUNDLE IN- STALLATION FOR AIRPLANES WITH AUX TANK - PUMP UNCOM- MANDED ON .111..65C38510-2 (a)NUT.1616.8.BACN10YR08CD (a)RIVET.3232.16.BACR15BA3AD4C (c)Screw8..16.8BACS12HN08-10 (c)SCREW.1616.8.BACS12HN08-16 (b)WASHER, PLAIN8323216168NAS1149DN816H SPACER.1616.8.NAS43DD3-32FC SLEEVING, STAN- DARD TEFLON .1111165C38537-1001 (a) For Operators in Groups 4, 9-11 configuration 2; Groups 7, 8, 12, 13 configuration 2 and 4, this part is not necessary. (b) For Operators in Groups 4, 9-11 configuration 2; Groups 7, 8, 12, 13 configuration 2 and 4, there are more of this part than necessary. (c) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 02, 2010 737-28A1227Revision 2: September 23, 2014 60 of 287 BOEING SERVICE BULLETIN 737-28A1227 The text continues at https://openairdocs.org/service-documents/boeing/737-28a1227/file/2452c673934d.md?from=61 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.