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Commercial Airplanes 747 Service Bulletin
SPECIAL ATTENTION Number: 747-52-2307 Original Issue: May 23, 2017 Revision 1: May 02, 2018 ATA System: 5231 5234 SUBJECT: DOORS - Nose Cargo Door and Forward/Aft Cargo Door - Control Switch Change Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.
9E991ECCN:
BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2017 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Unpublished Work.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: May 23, 2017 747-52-2307Revision 1: May 02, 2018 1 of 123
2.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 2 of 123 BOEING SERVICE BULLETIN 747-52-2307
BLANK PAGE
Table of Contents
Revision Transmittal Sheet5
Summary7
1. PLANNING INFORMATION11
A. Effectivity11
1. Airplanes11
2. Spares Affected12
B. Concurrent Requirements12
C. Reason12
D. Description13
E. Compliance14
F. Approval14
G. Manpower14
H. Weight and Balance Changes17
I. Electrical Load Data17
J. References18
1. Existing Data:18
2. Data Supplied with this Service Bulletin:18
3. Installation Drawings Used in the Preparation of this Service Bulletin:18
K. Publications Affected19
L. Interchangeability and Intermixability of Parts19
M. Software Accomplishment Summary19
2. MATERIAL INFORMATION21
A. Material - Price and Availability21
B. Industry Support Information22
C. Parts Necessary for Each Airplane23
1. Kits/Parts23
2. Parts and Materials Supplied by the Operator34
3. Parts Modified and Reidentified35
4. Parts Removed and Not Replaced35
D. Parts Necessary to Change Spares35
E. Special Tooling - Price and Availability35
F. Special Tooling Necessary to do this Service Bulletin35
3. ACCOMPLISHMENT INSTRUCTIONS37
A. GENERAL INFORMATION37
B. WORK INSTRUCTIONS39
FIGURE 1: NOSE CARGO DOOR CONTROL SWITCH CHANGE [Group 1]43
FIGURE 2: NOSE CARGO DOOR AND LIGHT CONTROL MODULE, H121 - WIRE BUNDLE W2572
CHANGE [Group 1]45
FIGURE 3: FORWARD CARGO DOOR CONTROL SWITCH REMOVAL47
FIGURE 4: FORWARD CARGO DOOR CONTROL SWITCH PAN ASSY REMOVAL49
FIGURE 5: FORWARD CARGO DOOR CONTROL SWITCH PAN ASSY INSTALLATION53
FIGURE 6: P86 PANEL - RESISTOR R2331 REMOVAL58
FIGURE 7: P86 PANEL - WIRE BUNDLE W0136 CHANGE61
FIGURE 8: WIRE BUNDLE W0572 CHANGE62
FIGURE 9: WIRE BUNDLE W1092 CHANGE65
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 3 of 123 BOEING SERVICE BULLETIN 747-52-2307
FIGURE 10: WIRE BUNDLE W0572 AND W1092 ROUTING67
FIGURE 11: FORWARD CARGO DOOR CONTROL SWITCH INSTALLATION72
FIGURE 12: FORWARD CARGO DOOR LIGHT SWITCH AND MARKER INSTALLATION74
FIGURE 13: FORWARD CARGO DOOR CONTROL MARKER CHANGE [Group 1-2]77
FIGURE 14: FORWARD CARGO DOOR CONTROL MARKER CHANGE [Group 3]80
FIGURE 15: AFT CARGO DOOR CONTROL SWITCH REMOVAL83
FIGURE 16: AFT CARGO DOOR CONTROL PANEL REMOVAL85
FIGURE 17: AFT CARGO DOOR CONTROL SWITCH PAN CHANGE88
FIGURE 18: P59 PANEL - RESISTOR R2332 REMOVAL96
FIGURE 19: P59 PANEL - WIRE BUNDLE W0080 CHANGE99
FIGURE 20: WIRE BUNDLE W0574 CHANGE100
FIGURE 21: WIRE BUNDLE W0574 ROUTING105
FIGURE 22: AFT CARGO DOOR CONTROL SWITCH INSTALLATION110
FIGURE 23: AFT CARGO DOOR LIGHT SWITCH AND MARKER INSTALLATION112
FIGURE 24: AFT CARGO DOOR CONTROL MARKER CHANGE [Group 1-2]117
FIGURE 25: AFT CARGO DOOR CONTROL MARKER CHANGE [Group 3]120
APPENDIX A: PART DEMAND INTENT123
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 4 of 123 BOEING SERVICE BULLETIN 747-52-2307
Commercial Airplanes 747 Service Bulletin
SPECIAL ATTENTION Revision Transmittal SheetNumber: 747-52-2307Original Issue: May 23, 2017 Revision 1: May 02, 2018 ATA System: 5231 5234 SUBJECT: DOORS - Nose Cargo Door and Forward/Aft Cargo Door - Control Switch Change 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 2017-NM-090-AD, is related to this service bulletin.
Effects of this Revision on airplanes on which Original Issue was previously done:
None.
REASON FOR REVISION This revision is sent to incorporate findings from the validation of the Original Issue of this service bulletin.
Instructions are included to remove clips around the forward cargo door control switch pan assembly. If the clips are not removed, they may become damaged when the control switch pan assembly is removed. Additionally, wire routing instructions were added, certain wires were increased in length within kits, instructions were added to install pressure seals during wire routing, and New FAA NPRM 2017-NM-090-AD added.
As a part of a service bulletin validation program, this change was completed on airplane RC009 by Service Bulletin 747-52-2307 Original Issue before the release of Revision 1 of this service bulletin. The change completed on airplane RC009 by Service Bulletin 747-52-2307 Original Issue is equivalent to the release of Revision 1 of this service bulletin. Airplane RC009 has the Configuration of a Group 2 airplane.
These sections were changed:
1. Summary, Compliance; added related FAA NPRM information.
2. Paragraph 1.C., Reason; reason for revision statement added.
3. Paragraph 1.D., Description; effects of this revision statement added.
4. Paragraph 1.E., Compliance; added related FAA NPRM information.
5. Paragraph 1.J., References; added related FAA NPRM information.
6. Paragraph 2.C.1., Kits/Parts; updated revised kits.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 5 of 123
7. Paragraph 2.C.2., Parts and Materials Supplied by the Operator; added footnote information.
8. Figure 4; clip removal information added.
9. Figure 5; clip installation information added.
10. Figure 8; wire routing information added for W0572-029-20 and W0572-026-20.
11. Figure 10; seal removal and installation work added.
12. Figure 17; rivet hole diameter changed.
13. Figure 20; flag note removed from flag note table.
14. Figure 21; seal removal and installation information added.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity and format changes, to show the location of all content changes.
Pages with no vertical lines have no changes.
REVISION HISTORY May 23, 2017Original Issue:
May 02, 2018Revision 1:
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 6 of 123 BOEING SERVICE BULLETIN 747-52-2307
Commercial Airplanes 747 Service Bulletin
SPECIAL ATTENTION SummaryNumber: 747-52-2307Original Issue: May 23, 2017 Revision 1: May 02, 2018 ATA System: 5231 5234 SUBJECT: DOORS - Nose Cargo Door and Forward/Aft Cargo Door - Control Switch Change BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS DOCUMENT IMMEDIATELY.
CONCURRENT REQUIREMENTS None.
BACKGROUND This service bulletin gives instructions to change the nose, forward, and aft cargo door control switches and add an arm switch to the forward and aft cargo doors. The safety intent of this service bulletin is to prevent failures of the Nose, Forward, and Aft Cargo Door control switch from allowing un-commanded movement of the cargo doors, which if not corrected could lead to personnel injury or death.
Operators have reported un-commanded operation for the forward and aft cargo doors due to failed control switches. Testing of failed switches found that the cargo door control switch can remain actuated after released to the OFF position. 747-8/8F Certification Maintenance Requirements Document D011U721-02-03 requires existing Forward, Aft, and Nose Cargo Doors Control Switch replacement every 6 years. In the most recent report of un-commanded cargo door operation the switch had only been installed for 44 months. Replacement of the Nose, Forward, and Aft Cargo door control switch with a new improved switch, and the addition of an arm switch in the open and close circuitry of the Forward and Aft Cargo Doors in accordance with this service bulletin will prevent failures that could lead to cargo door un-commanded movement.
Boeing Service Related Problem (SRP) 747-8-SRP-52-0114 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 747 FTD 52-07001 is related to this service bulletin.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedNoSpares Affected Paragraph 1.E., Compliance and Paragraph
1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesYesWeight and Balance Change Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 7 of 123
ReferenceAffectedPlanning Data Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedYesAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Airplane 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 85901-148S) Group 1:
WORK PACKAGE 1: NOSE CARGO DOOR CONTROL SWITCH CHANGE
1. Change the nose cargo door control switch.
2. Change wire bundle W2572.
WORK PACKAGE 2: FORWARD CARGO DOOR CONTROL SWITCH CHANGE
1. Replace existing forward cargo door control switch pan assembly (assembly) with new pan assembly.
2. Remove resistor R2331 from the P86 panel.
3. Change wire bundles W0136, W0572, and W1092.
4. Route wire bundles W0572 and W1092.
5. Install new forward cargo door control switch, arm switch, indicator, and support panel.
6. Change the forward cargo door control switch markers.
WORK PACKAGE 3: AFT CARGO DOOR CONTROL SWITCH CHANGE
1. Change the aft cargo door control switch pan.
2. Remove resistor R2332 from the P59 panel.
3. Change wire bundles W0080 and W0574.
4. Route wire bundle W0574.
5. Install new aft cargo door control switch, arm switch, indicator, and support panel.
6. Change the aft cargo door control switch markers.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 8 of 123 BOEING SERVICE BULLETIN 747-52-2307
EFFECTIVITY 747-8/-8F 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 2017-NM-090-AD, is related to this service bulletin.
Boeing recommends that the change given in this service bulletin be done within 35 months after the Orignal Issue date of this service bulletin.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of September 18, 2014. Please refer to Paragraph 2.B., Industry Support Information. The warranty remedies will expire eight years from the original issue date of this service bulletin.
MANPOWER Elapsed HoursTotal Task HoursAirplanes
55.3077.80Group 1
53.2575.75Group 2 and 3
MATERIAL INFORMATION Boeing Supplied Kits/Parts.
Refer to Paragraph 2.A., Material - Price and Availability.
Operators are encouraged to complete the survey provided in APPENDIX A 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: May 23, 2017 747-52-2307Revision 1: May 02, 2018 9 of 123 BOEING SERVICE BULLETIN 747-52-2307
BOEING SERVICE BULLETIN 747-52-2307
FORWARD CARGO
DOOR CONTROL
SWITCH CHANGE
AFT CARGO DOOR
CONTROL
SWITCH CHANGE
NOSE CARGO DOOR CHANGE CONTROL SWITCH 2508262 Original Issue: May 23, 2017 Revision 1: May 02, 2018 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 747-52-2307 Work - See page 1 for details. 10 of 123
Commercial Airplanes 747 Service Bulletin
SPECIAL ATTENTION Number: 747-52-2307 Original Issue: May 23, 2017 Revision 1: May 02, 2018 ATA System: 5231 5234 SUBJECT: DOORS - Nose Cargo Door and Forward/Aft Cargo Door - Control Switch Change BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS DOCUMENT IMMEDIATELY.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes This service bulletin is applicable to 747-8/-8F Airplanes, line numbers 1420-1536 in 3 Groups.
The Variable Numbers and Group Information for the applicable airplanes is given below. An equivalent change is on subsequent production airplanes. Refer to PRR 85901-148S for data about this change.
Refer to Service Bulletin Index D6-30300 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
DESCRIPTIONCONFIGURATIONGROUP 747-8F airplanes line numbers 1420-1536-1 747-8 airplanes line numbers 1434-1531 except line numbers 1499, 1507, 1508, 1510, 1515, 1517, and 1518 -2 747-8 airplanes line numbers 1499, 1507, 1508, 1510, 1515, 1517, and 1518 -3 Airplane Models:
747-8, 747-8F GroupVariable Number 2RC001 - RC009 2RC021 - RC040 2RC051 - RC057 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 11 of 123
GroupVariable Number 3RC066 - RC072 2RC076 - RC077 1RC501 - RC514 1RC521 - RC528 1RC541 1RC546 - RC566 1RC571 - RC582 1RC601 - RC605 1RC641 - RC644 1RC651 - RC652 1RC661 1RC671 - RC674
2. Spares Affected None.
B. Concurrent Requirements None.
C. Reason This service bulletin gives instructions to change the nose, forward, and aft cargo door control switches and add an arm switch to the forward and aft cargo doors. The safety intent of this service bulletin is to prevent failures of the Nose, Forward, and Aft Cargo Door control switch from allowing un-commanded movement of the cargo doors, which if not corrected could lead to personnel injury or death.
Operators have reported un-commanded operation for the forward and aft cargo doors due to failed control switches. Testing of failed switches found that the cargo door control switch can remain actuated after released to the OFF position. 747-8/8F Certification Maintenance Requirements Document D011U721-02-03 requires existing Forward, Aft, and Nose Cargo Doors Control Switch replacement every 6 years. In the most recent report of un-commanded cargo door operation the switch had only been installed for 44 months. Replacement of the Nose, Forward, and Aft Cargo door control switch with a new improved switch, and the addition of an arm switch in the open and close circuitry of the Forward and Aft Cargo Doors in accordance with this service bulletin will prevent failures that could lead to cargo door un-commanded movement.
Revision 1 is sent to incorporate findings from the validation of the Original Issue of this service bulletin.
Instructions are included to remove clips around the forward cargo door control switch pan assembly.
If the clips are not removed, they may become damaged when the control switch pan assembly is removed. Additionally, wire routing instructions were added, certain wires were increased in length within kits, instructions added to install pressure seals during wire routing, and New FAA Notice of Proposed Rule Making NPRM 2017-NM-090-AD added.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 23, 2017 747-52-2307Revision 1: May 02, 2018 12 of 123 BOEING SERVICE BULLETIN 747-52-2307