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Original Issue: August 07, 2008 Revision 1: November 25, 2009 747-28A2280 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 1162
Commercial Airplanes 747 Service Bulletin Number: 747-28A2280 Original Issue: August 07, 2008 Revision 1: November 25, 2009 ATA System: 2831 SUBJECT: FUEL - Fuel Jettison System - Center Tank Override/Jettison Fuel Pumps - Main 2 and Main 3 Tank Override/Jettison Fuel Pumps - Change to Give Redundant Control of the Fuel Pumps
BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2008 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.
This document includes proprietary information owned by The Boeing Company and/or one or more third parties. Treatment of the document and the information it contains is governed by contract with Boeing. For more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.
Boeing, 707, 717, 727, 737, 747, 757, 767, 777, BBJ, BOEING BUSINESS JET, DC-8, DC-9, DC-10, MD-10, MD-11, MD-80, MD-90, the Boeing logo and the Boeing livery are among the trademarks owned by Boeing or its subsidiaries. No intellectual property license (express or implied) is granted in connection with this document or otherwise.
BLANK PAGE Original Issue: August 07, 2008 Revision 1: November 25, 2009 747-28A2280 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 2 of 1162 BOEING SERVICE BULLETIN 747-28A2280
BLANK PAGE
Table of Contents Original Issue: August 07, 2008 Revision 1: November 25, 2009 747-28A2280 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 3 of 1162 BOEING SERVICE BULLETIN 747-28A2280
Table of Contents Revision Transmittal Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . 51
3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . 52 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . 53
2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . 251
3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252 F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 252
3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 54 FIGURE 1: P914 RELAY PANEL SUPPORT BRACKET - INSTALLATION. . . . . . . . . . . . . . . 397 FIGURE 2: P915 RELAY PANEL SUPPORT BRACKET - INSTALLATION. . . . . . . . . . . . . . . 401 FIGURE 3: MAIN EQUIPMENT CENTER - P914 RELAY PANEL - INSTALLATION . . . . . . . . . . 405 FIGURE 4: MAIN EQUIPMENT CENTER - P915 RELAY PANEL - INSTALLATION . . . . . . . . . . 409 FIGURE 5: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . . . 413 FIGURE 6: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . . . 419 FIGURE 7: MAIN EQUIPMENT CENTER - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . 425 FIGURE 8: MAIN EQUIPMENT CENTER - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . 454 FIGURE 9: MAIN EQUIPMENT CENTER - P414-1 PANEL - WIRING CHANGE . . . . . . . . . . . 486 FIGURE 10: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . . . 489 FIGURE 11: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . . . 494
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FIGURE 12: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . . 499 FIGURE 13: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . . 504 FIGURE 14: MAIN EQUIPMENT CENTER - P415-1 PANEL - WIRING CHANGE . . . . . . . . . . 509 FIGURE 15: MAIN EQUIPMENT CENTER - P415 PANEL - WIRING CHANGE . . . . . . . . . . . 512 FIGURE 16: MAIN EQUIPMENT CENTER - P415 PANEL - WIRING CHANGE . . . . . . . . . . . 517 FIGURE 17: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . . 522 FIGURE 18: MAIN EQUIPMENT CENTER - P415 PANEL - WIRING CHANGE . . . . . . . . . . . 527 FIGURE 19: MAIN EQUIPMENT CENTER - P415 PANEL - WIRING CHANGE . . . . . . . . . . . 532 FIGURE 20: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . . 537 FIGURE 21: MAIN EQUIPMENT CENTER - P180 PANEL - WIRING CHANGE . . . . . . . . . . . 542 FIGURE 22: MAIN EQUIPMENT CENTER - P180 PANEL - WIRING CHANGE . . . . . . . . . . . 546 FIGURE 23: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . . 550 FIGURE 24: MAIN EQUIPMENT CENTER - E2-6 SHELF - WIRING CHANGE . . . . . . . . . . . . 555 FIGURE 25: MAIN EQUIPMENT CENTER - E2-6 SHELF - WIRING CHANGE . . . . . . . . . . . . 558 FIGURE 26: MAIN EQUIPMENT CENTER - E2-6 SHELF - WIRING CHANGE . . . . . . . . . . . . 561 FIGURE 27: MAIN EQUIPMENT CENTER - E2-6 SHELF - WIRING CHANGE . . . . . . . . . . . . 564 FIGURE 28: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 567 FIGURE 29: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 569 FIGURE 30: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 571 FIGURE 31: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 573 FIGURE 32: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . . 575 FIGURE 33: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . . 577 FIGURE 34: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . . 579 FIGURE 35: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . . 581 FIGURE 36: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . . 586 FIGURE 37: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 589 FIGURE 38: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 591 FIGURE 39: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 593 FIGURE 40: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 595 FIGURE 41: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 597 FIGURE 42: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 598 FIGURE 43: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 599 FIGURE 44: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600 FIGURE 45: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . 602 FIGURE 46: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . 604 FIGURE 47: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . 605 FIGURE 48: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . 607 FIGURE 49: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . 609 FIGURE 50: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . 611
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FIGURE 51: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGES . . . . . . . . . . 612 FIGURE 52: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGES . . . . . . . . . . 614 FIGURE 53: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGES . . . . . . . . . . 616 FIGURE 54: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGES . . . . . . . . . . 618 FIGURE 55: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGES . . . . . . . . . . 620 FIGURE 56: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGES . . . . . . . . . . 622 FIGURE 57: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGES . . . . . . . . . . 624 FIGURE 58: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGES . . . . . . . . . . 626 FIGURE 59: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGES . . . . . . . . . . 628 FIGURE 60: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGES . . . . . . . . . . 630 FIGURE 61: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGES . . . . . . . . . . 632 FIGURE 62: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGES . . . . . . . . . . 634 FIGURE 63: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGES . . . . . . . . . . 636 FIGURE 64: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGES . . . . . . . . . . 638 FIGURE 65: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGES . . . . . . . . . . 640 FIGURE 66: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGES. . . . . . . 642 FIGURE 67: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGES. . . . . . . 645 FIGURE 68: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGES. . . . . . . 651 FIGURE 69: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGES. . . . . . . 653 FIGURE 70: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGES. . . . . . . 655 FIGURE 71: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . . 657 FIGURE 72: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . . 659 FIGURE 73: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGES. . . . . . . 661 FIGURE 74: FUEL JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . 663 FIGURE 75: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . . 665 FIGURE 76: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . . 667 FIGURE 77: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . . 669 FIGURE 78: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . . 671 FIGURE 79: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . . 673 FIGURE 80: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 5 FIGURE 81: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 6 FIGURE 82: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 7 FIGURE 83: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 9 FIGURE 84: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 8 1 FIGURE 85: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 8 2 FIGURE 86: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 8 3 FIGURE 87: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 8 4 FIGURE 88: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 8 5
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FIGURE 89: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 686 FIGURE 90: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 687 FIGURE 91: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 688 FIGURE 92: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 689 FIGURE 93: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 690 FIGURE 94: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 691 FIGURE 95: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692 FIGURE 96: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 693 FIGURE 97: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 694 FIGURE 98: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 696 FIGURE 99: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 698 FIGURE 100: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 700 FIGURE 101: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 702 FIGURE 102: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 704 FIGURE 103: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 706 FIGURE 104: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 708 FIGURE 105: FUEL JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . 710 FIGURE 106: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . 711 FIGURE 107: FUEL JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . 713 FIGURE 108: FUEL JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . 715 FIGURE 109: FUEL JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . 717 FIGURE 110: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 718 FIGURE 111: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 720 FIGURE 112: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 722 FIGURE 113: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 724 FIGURE 114: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 728 FIGURE 115: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 730 FIGURE 116: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 732 FIGURE 117: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 736 FIGURE 118: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 741 FIGURE 119: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 746 FIGURE 120: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 751 FIGURE 121: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 756 FIGURE 122: FUEL LOW PRESSURE WARNING - BOOSTER PUMPS - OVERRIDE/JETTISON PUMPS
- WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 761 FIGURE 123: FUEL LOW PRESSURE WARNING - BOOSTER PUMPS - OVERRIDE/JETTISON PUMPS
- WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 763 FIGURE 124: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 765
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FIGURE 125: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 7 1 FIGURE 126: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 7 7 FIGURE 127: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 8 3 FIGURE 128: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 8 9 FIGURE 129: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 9 5 FIGURE 130: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 0 1 FIGURE 131: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 0 7 FIGURE 132: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 1 3 FIGURE 133: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 1 9 FIGURE 134: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 2 5 FIGURE 135: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 3 1 FIGURE 136: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 3 7 FIGURE 137: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 4 3 FIGURE 138: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 4 9 FIGURE 139: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 5 5 FIGURE 140: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 6 1 FIGURE 141: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 6 7 FIGURE 142: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 7 3 FIGURE 143: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 7 9 FIGURE 144: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 8 5 FIGURE 145: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 9 1 FIGURE 146: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 9 7 FIGURE 147: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 903 FIGURE 148: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 904 FIGURE 149: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 905 FIGURE 150: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGE. . . . . . . . . . . 906 FIGURE 151: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING
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CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 908 FIGURE 152: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 910 FIGURE 153: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 911 FIGURE 154: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 912 FIGURE 155: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 914 FIGURE 156: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 915 FIGURE 157: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 916 FIGURE 158: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 918 FIGURE 159: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 919 FIGURE 160: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 920 FIGURE 161: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 922 FIGURE 162: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 924 FIGURE 163: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 926 FIGURE 164: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 928 FIGURE 165: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 930 FIGURE 166: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 932 FIGURE 167: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 934 FIGURE 168: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 936 FIGURE 169: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 938 FIGURE 170: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 940 FIGURE 171: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 942 FIGURE 172: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 944 FIGURE 173: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 946 FIGURE 174: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 948 FIGURE 175: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 950 FIGURE 176: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 952 FIGURE 177: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 954 FIGURE 178: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 956 FIGURE 179: OVERRIDE/JETTISON PUMPS - WIRING CHANGE. . . . . . . . . . . . . . . . . . 958 FIGURE 180: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 960 FIGURE 181: FUEL LOW PRESSURE WARNING - BOOSTER PUMPS 1, 2 FWD - 3, 4 AFT - LEFT, RIGHT OVERRIDE JETTISON - WIRING CHANGE . . . . . . . . . . . . . . . . . . 962
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FIGURE 182: FUEL LOW PRESSURE WARNING - BOOSTER PUMPS 1, 2 FWD - 3, 4 AFT - LEFT, RIGHT OVERRIDE JETTISON - WIRING CHANGE . . . . . . . . . . . . . . . . . . . 964 FIGURE 183: FUEL LOW PRESSURE WARNING - JETTISON PUMPS - MAIN 2 AND 3 AFT - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 6 6 FIGURE 184: FUEL LOW PRESSURE WARNING - JETTISON PUMPS - MAIN 2 AND 3 AFT - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 6 7 FIGURE 185: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGE. . . . . . . . . . . 968 FIGURE 186: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGE. . . . . . . . . . . 970 FIGURE 187: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGE. . . . . . . . . . . 972 FIGURE 188: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGE. . . . . . . . . . . 974 FIGURE 189: OVERRIDE/JETTISON PUMPS - MAIN 3 AFT - WIRING CHANGE. . . . . . . . . . . 976 FIGURE 190: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 978 FIGURE 191: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 980 FIGURE 192: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 982 FIGURE 193: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 984 FIGURE 194: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 986 FIGURE 195: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 988 FIGURE 196: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 990 FIGURE 197: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 992 FIGURE 198: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 994 FIGURE 199: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 996 FIGURE 200: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . 998 FIGURE 201: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . 1000 FIGURE 202: FUEL LOW PRESSURE WARNING - BOOSTER PUMPS 1, 2 FWD - 3, 4 AFT - LEFT, RIGHT OVERRIDE JETTISON - WIRING CHANGE . . . . . . . . . . . . . . . . . . 1002 FIGURE 203: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . 1004 FIGURE 204: OVERRIDE/JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . 1006 FIGURE 205: MAIN EQUIPMENT CENTER - P415 PANEL - WIRING CHANGE . . . . . . . . . . 1008 FIGURE 206: MAIN EQUIPMENT CENTER - P415 PANEL - WIRING CHANGE . . . . . . . . . . 1013 FIGURE 207: MAIN EQUIPMENT CENTER - E2-6 SHELF - WIRING CHANGE . . . . . . . . . . . 1018 FIGURE 208: MAIN EQUIPMENT CENTER - E2-6 SHELF - WIRING CHANGE . . . . . . . . . . . 1021 FIGURE 209: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . 1024 FIGURE 210: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1029 FIGURE 211: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1030 FIGURE 212: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1031 FIGURE 213: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1032 FIGURE 214: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1033 FIGURE 215: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1034 FIGURE 216: MAIN EQUIPMENT CENTER - P415 PANEL - WIRING CHANGE . . . . . . . . . . 1035 FIGURE 217: MAIN EQUIPMENT CENTER - LEFT SIDE - TERMINAL MODULE AND NUT SPACER - INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1040 FIGURE 218: MAIN EQUIPMENT CENTER - RIGHT SIDE - TERMINAL MODULE AND NUT SPACER - INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1044 FIGURE 219: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGES . . . . . 1048 FIGURE 220: FUEL JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . 1051 FIGURE 221: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . 1053
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FIGURE 222: FUEL JETTISON PUMPS - WIRING CHANGE . . . . . . . . . . . . . . . . . . . . . 1055 FIGURE 223: OVERRIDE/JETTISON PUMPS - MAIN 2 AFT - WIRING CHANGE . . . . . . . . . . 1057 FIGURE 224: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1059 FIGURE 225: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1065 FIGURE 226: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1071 FIGURE 227: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1077 FIGURE 228: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1078 FIGURE 229: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1079 FIGURE 230: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1080 FIGURE 231: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1081 FIGURE 232: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1082 FIGURE 233: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1083 FIGURE 234: FUEL LOW PRESSURE WARNING - WIRING CHANGE . . . . . . . . . . . . . . . 1084 FIGURE 235: MAIN EQUIPMENT CENTER - WIRING CHANGE . . . . . . . . . . . . . . . . . . . 1085 FIGURE 236: MAIN EQUIPMENT CENTER - WIRING CHANGE . . . . . . . . . . . . . . . . . . . 1114 FIGURE 237: MAIN EQUIPMENT CENTER - P414 PANEL - WIRING CHANGE . . . . . . . . . . . 1142 FIGURE 238: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . 1147 FIGURE 239: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGES . . . . . 1149 FIGURE 240: OVERRIDE/JETTISON PUMPS - WIRING CHANGES . . . . . . . . . . . . . . . . . 1151 FIGURE 241: OVERRIDE/JETTISON PUMPS - MAIN 3 FORWARD - WIRING CHANGE . . . . . . 1153 FIGURE 242: FUEL LOW PRESSURE WARNING - JETTISON PUMPS MAIN 2 AND 3 FWD - WIRING CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1155 FIGURE 243: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 1157 FIGURE 244: OVERRIDE/JETTISON PUMPS - MAIN 2 FORWARD - WIRING CHANGE . . . . . . 1159 FIGURE 245: MAIN EQUIPMENT CENTER - P415 PANEL - WIRING CHANGE . . . . . . . . . . . 1161
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Commercial Airplanes 747 Service Bulletin Number: 747-28A2280 Revision Transmittal Sheet Original Issue: August 07, 2008 Revision 1: November 25, 2009 ATA System: 2831 SUBJECT: FUEL - Fuel Jettison System - Center Tank Override/Jettison Fuel Pumps - Main 2 and Main 3 Tank Override/Jettison Fuel Pumps - Change to Give Redundant Control of the Fuel Pumps This Revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on airplanes changed as shown in the original issue of this service bulletin.
REASON FOR REVISION As a part of a service bulletin validation program, this change was completed on airplane RM084 by Service Bulletin 747-28A2280 Original Issue before the release of Revision 1 of this service bulletin. The change completed on airplane RM084 by Service Bulletin 747-28A2280 Original Issue is equivalent to the release of Revision 1 of this service bulletin. Airplane RM084 has the configuration of a Group 131 airplane.
This revision is sent to update the wire diagrams and wire installation figures, include more information on access, and update the material information section because more wiring parts are needed to complete the change. Also more figures are needed to show the configuration of the validation airplane.
The effectivity group assignment for RM084 was changed from Group 2 to new Group 131 to show the correct wiring configuration for this airplane.
The following sections were changed:
1. In Summary, Planning Information, Material Information, Accomplishment Instructions, and all applicable figures, updated to specify the new group.
2. In Summary, and Planning Information, Paragraph 1.D., updated the access instructions.
3. In Material Information, Paragraph 2.A., updated the price and availability of the Top Kit.
4. In Material Information, Paragraph 2.C., updated the parts list.
5. In Accomplishment Instructions, Paragraph 3.A., added a note to follow the existing wire bundle routing when possible.
6. In Accomplishment Instructions, Paragraph 3.B., updated steps for ceiling panels and floor panels removal to specify stations.
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7. In Figure 1 and 2, revised step tables to show new fasteners for brackets.
8. In Figure 7, 8, 235, and 236, revised step tables to correct the separation code for W4727.
9. In Figure 7, 8, 235, and 236, revised step tables to include colored plastic tie straps as an alternative to lacing tape.
10. In Figure 51 - 55, added new flag notes for BACC47CP2S contact at DM7867 and updated quantity of BACC47CP1S contact.
11. In Figure 67 - 70 and 73, revised illustrations to show M7869 on the left side.
12. In Figure 67 - 70, and 73, added new flag notes for BACC47CP2S contact at DM7869 and updated quantity of BACC47CP1S contact.
13. In Figure 76 - 79, added new flag notes for BACC47CP2S contact at DM7868 and updated quantity of BACC47CP1S contact.
14. In Figure 186 - 189, added new flag notes for BACC47CP2S contact at DM7866 and updated quantity of BACC47CP1S contact.
15. In Figure 187, revised illustration to show wire W4748-012-20 termination at SP14401.
16. In Figure 217 and 218, revised step tables to specify ground ID labels.
17. Added 6 new figures for new group 131 to show new wire positions and terminations for connector D40280P.
18. Added 2 new figures for new group 131 to show new wire positions for connector D40368P.
19. Added 1 new figure to install hardware for new receptacle connectors and updated Accomplishment Instructions to include the new figure.
The data given in Information Notice 747-28-2280 IN 01 is included in this revision with one exception. In Figures 113, 116, 117, 118, 119, 120, 121, the wires W3942-8FE, W3942-8FF, and W3942-8FH are specified as size 20 wire but they are size 22 wire. This statement in IN 01 is incorrect and the wire size should be size 20.
Paragraph 1.A., Effectivity, shows changes of airplane operators. Each operator should examine the Effectivity paragraph for changes.
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 Original Issue August 07, 2008 Revision 1: November 25, 2009