Boeing Special Attention Service Bulletin 757-52-0093: Revision 1, text

TextPartly OCR

Some pages are OCR from a scan. OCR can misread letters and numbers.

Query with SQL

duckdb -csv -c "SELECT p.page, p.text_source, p.text, f.rights_holder, f.license
  FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256)
  WHERE p.file_sha256 = '2e0b6bef3d29c52ac297f4cecb2eb6a865f3492c1ebb1d382dd05c384d71d9f0'
  ORDER BY p.page"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SELECT p.page, p.text_source, p.text, f.rights_holder, f.license
FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256)
WHERE p.file_sha256 = '2e0b6bef3d29c52ac297f4cecb2eb6a865f3492c1ebb1d382dd05c384d71d9f0'
ORDER BY p.page

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

Page 1Open in PDF

Commercial Airplanes 757 Service Bulletin

SPECIAL ATTENTION Number: 757-52-0093 Original Issue: May 05, 2016 Revision 1: April 21, 2017 ATA System: 5234 SUBJECT: DOORS - No. 1 and 2 Cargo Door - Cargo Door Arm Switch and Relay Installation 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:

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 05, 2016 757-52-0093Revision 1: April 21, 2017 1 of 315

7.0

Page 2Open in PDF

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 2 of 315 BOEING SERVICE BULLETIN 757-52-0093

BLANK PAGE

Page 3Open in PDF

Table of Contents

Revision Transmittal Sheet7

S u m m a r y9

1. PLANNING INFORMATION ........................................ 1 3 A . E f f e c t i v i t y ............................................... 1 3

1. Airplanes ............................................ 1 3 2 . S p a r e s A f f e c t e d ........................................ 2 1 B. Concurrent Requirements ...................................... 2 1 C. Reason ................................................ 2 1 D. Description .............................................. 2 2 E. Compliance .............................................. 2 4 F . A p p r o v a l ............................................... 2 4 G. Manpower .............................................. 2 5 H. Weight and Balance Changes .................................... 4 9 I. Electrical Load Data ......................................... 5 0 J . R e f e r e n c e s .............................................. 5 0

1. Existing Data: ......................................... 5 0

2. Data Supplied with this Service Bulletin: ........................... 5 1

3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 5 1 K. Publications Affected ........................................ 5 2 L. Interchangeability and Intermixability of Parts ........................... 5 2 M. Software Accomplishment Summary ................................ 5 2

2. MATERIAL INFORMATION ........................................ 5 3 A. Material - Price and Availability ................................... 5 3 B. Industry Support Information .................................... 5 7 C. Parts Necessary for Each Airplane ................................. 5 7 1 . K i t s / P a r t s ............................................ 5 7

2. Parts and Materials Supplied by the Operator ........................ 8 3

3. Parts Modified and Reidentified ................................ 8 4

4. Parts Removed and Not Replaced .............................. 8 4 D. Parts Necessary to Change Spares ................................. 8 4 E. Special Tooling - Price and Availability ............................... 8 4 F. Special Tooling Necessary to do this Service Bulletin ....................... 8 4

3. ACCOMPLISHMENT INSTRUCTIONS .................................. 8 5 A. GENERAL INFORMATION ..................................... 8 5 B. WORK INSTRUCTIONS ....................................... 8 6 FIGURE 1: MAIN ELECTRONICS COMPARTMENT - FLOOR PANELS AND COVERS - REMOVAL . 97 FIGURE 2: MAIN EQUIPMENT CENTER - P65 PANEL - RELAY CUTOUT AND GROUND BLOCK INSTALLATION [Group 1-8, 15-16, 50] ............................ 9 9 FIGURE 3: MAIN EQUIPMENT CENTER - P65 PANEL - RELAY CUTOUT AND GROUND BLOCK INSTALLATION [Group 9-14, 18-20, 23-26, 28-32, 36-39, 41-42, 44, 46-49] ....... 1 0 2 FIGURE 4: MAIN EQUIPMENT CENTER - P65 PANEL - RELAY CUTOUT [Group 17, 21-22, 27, 33-35, 4 0 , 4 3 , 4 5 ] ........................................... 1 0 5 FIGURE 5: MAIN EQUIPMENT CENTER - P65 PANEL - DECAL INSTALLATION [Group 1-8, 15-16, 50] ................................................. 1 0 7 FIGURE 6: MAIN EQUIPMENT CENTER - P65 PANEL - DECAL INSTALLATION [Group 9-14, 18-20, 2 3 - 2 6 , 2 8 - 3 2 , 3 6 - 3 9 , 4 1 - 4 2 , 4 4 , 4 6 - 4 9 ] ............................ 1 0 9 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 3 of 315 BOEING SERVICE BULLETIN 757-52-0093

Page 4Open in PDF

FIGURE 7: MAIN EQUIPMENT CENTER - P65 PANEL - DECAL INSTALLATION [Group 17, 21-22, 27, 3 3 - 3 5 , 4 0 , 4 3 , 4 5 ] ....................................... 1 1 1 FIGURE 8: FORWARD CARGO DOOR AREA - P43 PANEL - CARGO DOOR ARM SWITCH CUTOUT ................................................. 1 1 3 FIGURE 9: FORWARD CARGO DOOR AREA - P43 PANEL - CARGO DOOR CONTROL AND ARM SWITCH INSTALLATION .................................. 1 1 5 FIGURE 10: FORWARD CARGO COMPARTMENT AND MAIN EQUIPMENT CENTER - WIRE BUNDLES W0816 AND W4104 - WIRE ROUTING [Group 1] ..................... 1 1 7 FIGURE 11: FORWARD CARGO COMPARTMENT AND MAIN EQUIPMENT CENTER - WIRE BUNDLES W0816, W4104 AND W4162 - WIRE ROUTING [Group 2-20, 22-50] ........... 1 2 2 FIGURE 12: FORWARD CARGO COMPARTMENT AND MAIN EQUIPMENT CENTER - WIRE BUNDLES W0816, W4162 AND W6634 - WIRE ROUTING [Group 21] ................ 1 2 7 FIGURE 13: P43 PANEL - W0816 WIRE BUNDLE - WIRING CHANGE [Group 1] ........... 1 3 1 FIGURE 14: P43 PANEL - W0816 WIRE BUNDLE - WIRING CHANGE [Group 2-20, 22-50] ..... 1 3 3 FIGURE 15: P43 PANEL - W0816 WIRE BUNDLE - WIRING CHANGE [Group 21] .......... 1 3 5 FIGURE 16: P41 PANEL - W4104 WIRE BUNDLE - WIRING CHANGE [Group 1] ........... 1 3 7 FIGURE 17: P41 PANEL - W4104 WIRE BUNDLE - WIRING CHANGE [Group 2-20, 22-50] ..... 1 3 9 FIGURE 18: P65 PANEL - W4162 WIRE BUNDLE - WIRING CHANGE [Group 2-20, 22-50] ..... 1 4 0 FIGURE 19: P65 PANEL - W4162 WIRE BUNDLE - WIRING CHANGE [Group 21] .......... 1 4 1 FIGURE 20: P41 PANEL - W6634 WIRE BUNDLE - WIRING CHANGE [Group 21] .......... 1 4 2 FIGURE 21: P65 PANEL - W0808 WIRE BUNDLE - WIRING CHANGE [Group 1] ........... 1 4 4 FIGURE 22: P65 PANEL - W0808 WIRE BUNDLE - WIRING CHANGE [Group 2-8, 15-16, 50] .... 1 4 6 FIGURE 23: P65 PANEL - W0808 WIRE BUNDLE - WIRING CHANGE [Group 9-14, 17-20, 23-34, 36-39, 4 1 - 4 9 ] ............................................. 1 4 8 FIGURE 24: P65 PANEL - W0808 WIRE BUNDLE - WIRING CHANGE [Group 21] .......... 1 5 0 FIGURE 25: P65 PANEL - W0808 WIRE BUNDLE - WIRING CHANGE [Group 22, 35] ........ 1 5 2 FIGURE 26: P65 PANEL - W0808 WIRE BUNDLE - WIRING CHANGE [Group 40] .......... 1 5 4 FIGURE 27: AFT CARGO DOOR AREA - P44 PANEL - CARGO DOOR ARM SWITCH CUTOUT . . 156 FIGURE 28: AFT CARGO DOOR AREA - P44 PANEL - CARGO DOOR CONTROL AND ARM SWITCH INSTALLATION ....................................... 1 5 8 FIGURE 29: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016 AND W2632 - WIRE ROUTING [Group 1] ............................................ 1 6 0 FIGURE 30: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2662 AND W4106 - WIRE ROUTING [Group 2, 50] ................................... 1 6 4 FIGURE 31: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2662 AND W2716 - WIRE ROUTING [Group 3] ..................................... 1 6 8 FIGURE 32: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2632 AND W2662 - WIRE ROUTING [Group 4] ..................................... 1 7 2 FIGURE 33: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2662 AND W4106 - WIRE ROUTING [Group 5] ..................................... 1 7 6 FIGURE 34: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2662 AND W2716 - WIRE ROUTING [Group 6-7] .................................... 1 8 1 FIGURE 35: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2632 AND W2662 - WIRE ROUTING [Group 8, 15-16] .................................. 1 8 6 FIGURE 36: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2662 AND W2716 - WIRE ROUTING [Group 9, 28] ................................... 1 9 0 FIGURE 37: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2632 AND W2662 - WIRE ROUTING [Group 10-11, 13-14, 17-19, 24-27, 29, 31, 33-34, 36-40, 42-49] ....... 1 9 4 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 4 of 315 BOEING SERVICE BULLETIN 757-52-0093

Page 5Open in PDF

FIGURE 38: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2632 AND W2662 - WIRE ROUTING [Group 12] ..................................... 1 9 8 FIGURE 39: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2632 AND W2662 - WIRE ROUTING [Group 20, 32, 41] ................................. 2 0 2 FIGURE 40: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W5910 AND W2660 - WIRE ROUTING [Group 21] ..................................... 2 0 8 FIGURE 41: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2632 AND W2662 - WIRE ROUTING [Group 22, 35] ................................... 2 1 2 FIGURE 42: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2632 AND W2662 - WIRE ROUTING [Group 23] ..................................... 2 1 6 FIGURE 43: AFT CARGO COMPARTMENT - WIRE BUNDLES W1016, W2632 AND W2662 - WIRE ROUTING [Group 30] ..................................... 2 2 2 FIGURE 44: P44 PANEL - W1016 WIRE BUNDLE - WIRING CHANGE [Group 1] ........... 2 2 6 FIGURE 45: P44 PANEL - W1016 WIRE BUNDLE - WIRING CHANGE [Group 2, 5, 50] ....... 2 2 8 FIGURE 46: P44 PANEL - W1016 WIRE BUNDLE - WIRING CHANGE [Group 3, 6-7, 9, 28] ..... 2 3 0 FIGURE 47: P44 PANEL - W1016 WIRE BUNDLE - WIRING CHANGE [Group 4, 8, 10-20, 22-27, 29-49] ................................................. 2 3 2 FIGURE 48: P44 PANEL - W1016 WIRE BUNDLE - WIRING CHANGE [Group 21] .......... 2 3 4 FIGURE 49: AFT CARGO COMPARTMENT - W2632 WIRE BUNDLE - WIRING CHANGE [Group 1] . 236 FIGURE 50: AFT CARGO COMPARTMENT - W2632 WIRE BUNDLE - WIRING CHANGE [Group 4, 8, 1 0 - 2 0 , 2 2 - 2 7 , 2 9 - 4 9 ] ..................................... 2 3 8 FIGURE 51: E6 RACK - W2660 WIRE BUNDLE - WIRING CHANGE [Group 21] ............ 2 4 0 FIGURE 52: E6 RACK - W2662 WIRE BUNDLE - WIRING CHANGE [Group 2, 5, 50] ......... 2 4 1 FIGURE 53: E6 RACK - W2662 WIRE BUNDLE - WIRING CHANGE [Group 3, 6-7, 9, 28] ...... 2 4 2 FIGURE 54: E6 RACK - W2662 WIRE BUNDLE - WIRING CHANGE [Group 4, 8, 10-19, 22, 24-27, 29, 31, 3 3 - 4 0 , 4 2 - 4 8 ] ......................................... 2 4 3 FIGURE 55: E6 RACK - W2662 WIRE BUNDLE - WIRING CHANGE [Group 20, 23, 32, 41] ..... 2 4 4 FIGURE 56: E6 RACK - W2662 WIRE BUNDLE - WIRING CHANGE [Group 30, 49] ......... 2 4 5 FIGURE 57: P42 PANEL - W2716 WIRE BUNDLE - WIRING CHANGE [Group 3, 6-7, 9, 28] ..... 2 4 6 FIGURE 58: P42 PANEL - W4106 WIRE BUNDLE - WIRING CHANGE [Group 2, 5, 50] ....... 2 4 8 FIGURE 59: P42 PANEL - W5910 WIRE BUNDLE - WIRING CHANGE [Group 21] .......... 2 4 9 FIGURE 60: P72 PANEL - W1028 WIRE BUNDLE - WIRING CHANGE [Group 1] ........... 2 5 1 FIGURE 61: E6 RACK - W1040 WIRE BUNDLE - WIRING CHANGE [Group 20, 23, 32, 41] ..... 2 5 3 FIGURE 62: E6 RACK - W1024 WIRE BUNDLE - WIRING CHANGE [Group 4, 8, 15-16] ....... 2 5 5 FIGURE 63: E6 RACK - W1024 WIRE BUNDLE - WIRING CHANGE [Group 2-3, 5-7, 50] ....... 2 5 7 FIGURE 64: E6 RACK - W1024 WIRE BUNDLE - WIRING CHANGE [Group 9, 28, 30, 49] ...... 2 5 9 FIGURE 65: E6 RACK - W1024 WIRE BUNDLE - WIRING CHANGE [Group 10-14, 17-19, 22, 24-27, 29, 3 1 , 3 3 - 4 0 , 4 2 - 4 8 ] ....................................... 2 6 1 FIGURE 66: E6 RACK - W1024 WIRE BUNDLE - WIRING CHANGE [Group 21] ............ 2 6 3 FIGURE 67: AFT CARGO COMPARTMENT - P74 PANEL - WIRE BUNDLE W1028 ROUTING [Group 1] ................................................. 2 6 5 FIGURE 68: AFT CARGO COMPARTMENT - E6 RACK - WIRE BUNDLE W1040 ROUTING [Group 20, 23, 3 2 , 4 1 ] ............................................. 2 6 6 FIGURE 69: AFT CARGO COMPARTMENT - E6 RACK - WIRE BUNDLE W1024 ROUTING [Group 2-3, 5 - 7 , 5 0 ] ............................................ 2 6 7 FIGURE 70: AFT CARGO COMPARTMENT - E6 RACK - WIRE BUNDLE W1024 ROUTING [Group 4, 8, 1 5 - 1 6 ] ............................................. 2 6 8 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 5 of 315 BOEING SERVICE BULLETIN 757-52-0093

Page 6Open in PDF

FIGURE 71: AFT CARGO COMPARTMENT - E6 RACK - WIRE BUNDLE W1024 ROUTING [Group 9, 28, 3 0 , 4 9 ] ............................................. 2 6 9 FIGURE 72: AFT CARGO COMPARTMENT - E6 RACK - WIRE BUNDLE W1024 ROUTING [Group 10-14, 1 7 - 1 9 , 2 1 - 2 2 , 2 4 - 2 7 , 2 9 , 3 1 , 3 3 - 4 0 , 4 2 - 4 8 ] ......................... 2 7 0 FIGURE 73: MAIN EQUIPMENT CENTER - P65 PANEL - K10433 RELAY INSTALLATION [Group 1-8, 1 5 - 1 6 , 5 0 ] ........................................... 2 7 1 FIGURE 74: MAIN EQUIPMENT CENTER - P65 PANEL - K10433 RELAY INSTALLATION [Group 9-14, 1 8 - 2 0 , 2 3 - 2 6 , 2 8 - 3 2 , 3 6 - 3 9 , 4 1 - 4 2 , 4 4 , 4 6 - 4 9 ] ........................ 2 7 4 FIGURE 75: MAIN EQUIPMENT CENTER - P65 PANEL - K10433 RELAY INSTALLATION [Group 17, 21-22, 2 7 , 3 3 - 3 5 , 4 0 , 4 3 , 4 5 ] ..................................... 2 7 7 FIGURE 76: AFT CARGO COMPARTMENT - P74 PANEL - K10434 RELAY AND DECAL INSTALLATION [Group 1] ............................................ 2 8 0 FIGURE 77: AFT CARGO COMPARTMENT - E6 RACK - K10434 RELAY AND DECAL INSTALLATION [Group 20, 23, 32, 41] ..................................... 2 8 3 FIGURE 78: AFT CARGO COMPARTMENT - E6 RACK - K10434 RELAY AND DECAL INSTALLATION [Group 2-3, 5-7, 50] ...................................... 2 8 6 FIGURE 79: AFT CARGO COMPARTMENT - E6 RACK - K10434 RELAY AND DECAL INSTALLATION [Group 4, 8, 15-16] ...................................... 2 8 9 FIGURE 80: AFT CARGO COMPARTMENT - E6 RACK - K10434 RELAY AND DECAL INSTALLATION [Group 9, 28, 30, 49] ..................................... 2 9 2 FIGURE 81: AFT CARGO COMPARTMENT - E6 RACK - K10434 RELAY AND DECAL INSTALLATION [Group 10-14, 17-19, 21-22, 24-27, 29, 31, 33-40, 42-48] ................. 2 9 5 FIGURE 82: P65 PANEL - W0808 WIRE BUNDLE - WIRE ROUTING [Group 1-8, 15-16, 50] ..... 2 9 8 FIGURE 83: P65 PANEL - W0808 WIRE BUNDLE - WIRE ROUTING [Group 9-14, 17-49] ...... 3 0 0 FIGURE 84: MAIN ELECTRONICS COMPARTMENT - FLOOR PANELS AND COVERS - INSTALLATION ................................................. 3 0 2 FIGURE 85: P43 PANEL - CARGO DOOR ARM SWITCH IDENTIFICATION INSTALLATION .... 3 0 4 FIGURE 86: P44 PANEL - CARGO DOOR ARM SWITCH IDENTIFICATION INSTALLATION .... 3 0 6 FIGURE 87: P43 PANEL - CARGO DOOR ARM SWITCH IDENTIFICATION REPLACEMENT .... 3 0 8 FIGURE 88: P44 PANEL - CARGO DOOR ARM SWITCH IDENTIFICATION REPLACEMENT .... 3 1 0 APPENDIX A: REPETITIVE FUNCTIONAL TEST - NO. 1 AND NO. 2 CARGO DOORS WITH SB 757-52-0093 CONTROL CIRCUIT ..................................... 3 1 2 APPENDIX B: PART DEMAND INTENT ................................... 3 1 5 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 6 of 315 BOEING SERVICE BULLETIN 757-52-0093

Page 7Open in PDF

Commercial Airplanes 757 Service Bulletin

SPECIAL ATTENTION Revision Transmittal SheetNumber: 757-52-0093Original Issue: May 05, 2016 Revision 1: April 21, 2017 ATA System: 5234 SUBJECT: DOORS - No. 1 and 2 Cargo Door - Cargo Door Arm Switch and Relay Installation This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION Effects of this Revision on airplanes on which Original Issue was previously done:

None. As an option, operator can replace the three piece switch identification with a new marker that can be supplied by Boeing under instructions labeled: OPTIONAL: CARGO DOOR ARM SWITCH IDENTIFICATION REPLACEMENT.

REASON FOR REVISION This revision is sent to separate cargo door arm switch decal installation instructions and add an optional cargo door arm switch identification replacement procedure and parts. The cargo door arm switch identification installation is not required for compliance, which allows the operator to install an optional alternate switch identification. Boeing has added new marker part numbers that can be purchased as a spare. Also, this revision is sent to add new alternative method of compliance and terminating action to a requirement of AD 2013-01-02.

These sections were changed:

1. In Summary Background, added summary statement and changed reference.

2. In Summary Action, clarified switch nomenclature.

3. In Paragraph 1.C., Reason, added summary statement and revision statement, changed reference.

4. In Paragraph 1.D., Description, added statement.

5. In Paragraph 1.F., Approval, added alternative method of compliance statements.

6. In Paragraph 1.G., Manpower, added new figures to tables, added optional work table.

7. In Paragraph 2.A., Material - Price and Availability, added and changed kit availability information.

8. In Paragraph 2.C.2., Parts and Materials Supplied by the Operator, removed part and added new parts to table.

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 7 of 315

Page 8Open in PDF

9. In Paragraph 3.B., Work Instructions, separated cargo door arm switch identification installation instructions by adding step 20 and step 37 and renumbering subsequent steps, added optional identification replacement instructions. Clarified switch nomenclature in multiple work steps.

10. FIGURE 8, changed title.

11. FIGURE 9, changed figure, changed step table by removing external cargo door arm switch identification steps and changed footnotes.

12. FIGURE 13 through FIGURE 20, changed footnote.

13. FIGURE 27, changed title.

14. FIGURE 28, changed figure, changed step table by removing external cargo door arm switch identification steps and changed footnotes.

15. FIGURE 44 through FIGURE 48, changed footnote.

16. FIGURE 85, added figure and step table.

17. FIGURE 86, added figure and step table.

18. FIGURE 87, added figure and step table.

19. FIGURE 88, added figure and step table.

The data given in Information Notice 757-52-0093 IN02 is included in this revision.

Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity and format changes, to show the location of all content changes.

Pages with no vertical lines have no changes.

REVISION HISTORY May 05, 2016Original Issue:

April 21, 2017Revision 1:

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 8 of 315 BOEING SERVICE BULLETIN 757-52-0093

Page 9Open in PDF

Commercial Airplanes 757 Service Bulletin

SPECIAL ATTENTION SummaryNumber: 757-52-0093Original Issue: May 05, 2016 Revision 1: April 21, 2017 ATA System: 5234 SUBJECT: DOORS - No. 1 and 2 Cargo Door - Cargo Door Arm Switch and Relay Installation BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS DOCUMENT IMMEDIATELY.

CONCURRENT REQUIREMENTS Refer to Paragraph 1.B., Concurrent Requirements.

BACKGROUND This service bulletin is sent to give instructions to install new switches, relays and related wiring to the forward and aft cargo compartment door control system. The internal contacts of the current cargo door control switch can stay in a closed position when the switch is released. This is caused by the internal contacts of the switch welding together. The safety intent of this service bulletin is to prevent failures of the cargo door control switch from allowing un-commanded movement of the cargo door, which if not corrected, could lead to personnel injury or death.

Operators have experienced cases where the cargo door has continued to move after the cargo door control switch has been released. The momentary cargo door control switch was released to stop the door. The cargo door control switch stuck in the close position and the door continued to move in the close direction resulting in an injury.

With the new cargo door control and arm switch configuration installed, the operator must manually move both switches to operate the cargo door. Both switches are spring loaded to the off position and releasing either switch will stop the door operation. The design change of the cargo door open/close circuitry by adding the cargo door arm switch in accordance with this service bulletin, will prevent failures that could lead to un-commanded movement of the cargo door. In addition, the periodic functional check of both cargo door control and arm switches required by this service bulletin, will provide a means to detect latent failures of either switch.

Boeing Service Related Problem (SRP) 757-SRP-52-0119 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 757 FTD 52-6001 is related to this service bulletin.

As a part of a service bulletin remote certification program, this change was completed on airplane NT976 by Service Bulletin 757-52-0093 RC01 before the Original Issue of this service bulletin. The change completed on airplane NT976 by Service Bulletin 757-52-0093 RC01 is equivalent to the Original Issue of this service bulletin.

Airplane NT976 has the configuration of a Group 12 airplane.

This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 9 of 315

Page 10Open in PDF

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 Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedNoAirplane 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 Get access to the main electronics compartment and remove the floor panels. Get access to the forward and aft cargo compartments and remove the sidewall and ceiling linings. In the main electronics compartment, make a cutout in the P65 Panel, install a relay and ground block. At the P43 forward cargo compartment control panel make a cutout and install the cargo door control and arm switches. At the P44 aft cargo compartment control panel make a cutout and install the cargo door control and arm switches.

Group 1:

Between the P43 and P65 Panels, install wire bundles W0816 and W4104.

Group 2-20, 22-50:

Between the P43 and P65 Panels, install wire bundles W0816, W4104 and W4162.

Group 21:

Between the P43 and P65 Panels, install wire bundles W0816, W4162 and W6634.

At the P65 Panel, install relay K10433 and wire bundle W0808.

Group 1:

Between the P44 and P74 Panels, install wire bundles W1016 and W2632.

Group 2, 5, 50:

Between the P44 Panel and the E6 Rack, install wire bundles W1016, W2662 and W4106.

Group 3, 6-7, 9, 28:

Between the P44 Panel and the E6 Rack, install wire bundles W1016, W2662 and W2716.

Group 4, 8, 10-20, 22-27, 29-49:

Between the P44 Panel and the E6 Rack, install wire bundles W1016, W2632 and W2662.

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 10 of 315 BOEING SERVICE BULLETIN 757-52-0093

Page 11Open in PDF

Group 21:

Between the P44 Panel and the E6 Rack, install wire bundles W1016, W2660 and W5910.

Group 1:

At the P74 Panel, install relay K10434 and wire bundle W1028.

Group 20, 23, 32, 41:

At the E6 Rack, install relay K10434 and wire bundle W1040.

Group 2-19, 21-22, 24-31, 33-40, 42-50:

At the E6 Rack, install relay K10434 and wire bundle W1024.

Do a continuity test of the new wires. Install the floor panels, sidewall and ceiling linings. Do the tests to make sure the No. 1 and No 2 cargo doors work correctly.

EFFECTIVITY 757-200/-200PF/-200CB/-300 Airplanes. Refer to Paragraph 1.A., Effectivity, Airplanes, for the list of affected airplanes.

COMPLIANCE Refer to Paragraph 1.E., Compliance.

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/Parts.

Refer to Paragraph 2.A., Material - Price and Availability.

Operators are encouraged to complete the survey provided in APPENDIX B of this service bulletin to help Boeing predict the quantity and timing of the Boeing Supplied Kits/Parts.

Original Issue: May 05, 2016 757-52-0093Revision 1: April 21, 2017 11 of 315 BOEING SERVICE BULLETIN 757-52-0093

Page 12OCROpen in PDF

BOEING SERVICE BULLETIN 757-52-0093 AT THE P65 PANEL:

MAKE A CHANGE TO A PANEL ASSEMBLY

MAKE A WIRING CHANGE, INSTALL A RELAY.

P43 CONTROL PANEL:

- REPLACE ONE SWITCH

AND ADD ONE SWITCH P44 CONTROL PANEL:

-REPLACE ONE SWITCH AND ADD ONE SWITCH.

GROUP 2-5:

AT THE E6 RACK (TYPICAL):

MAKE A WIRING CHANGE INSTALL A RELAY.

GROUP 2-5:

AT THE E6 RACK (TYPICAL) MAKE A WIRING CHANGE 2461054 INSTALL A RELAY.

Pages 13–24 of 315