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Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION Number: 767-25-0549 Original Issue: May 09, 2017 Revision 2: January 27, 2023 ATA System: 2511 SUBJECT: EQUIPMENT/FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat - Horizontal Movement System Inspection and Overhaul EXPORT CONTROLLED - This technology or software is subject to the U.S. Export Administration Regulations (EAR), (15 C.F.R. Parts 730-774). No authorization from the U.S. Department of Commerce is required for export, re-export, in-country transfer, or access EXCEPT to country group E:1 or E:2 countries/persons per Supp.1 to Part 740 of the EAR.
9E991ECCN:
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Unpublished Work.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 09, 2017 767-25-0549Revision 2: January 27, 2023 1 of 83
5.0
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 09, 2017 767-25-0549Revision 2: January 27, 2023 2 of 83 BOEING SERVICE BULLETIN 767-25-0549
BLANK PAGE
Table of Contents
Revision Transmittal Sheet5
Summary9
1. PLANNING INFORMATION13
A. Effectivity13
1. Airplanes13
2. Spares Affected16
B. Concurrent Requirements17
C. Reason18
D. Description19
E. Compliance19
F. Approval29
G. Manpower29
H. Weight and Balance Changes34
I. Electrical Load Data34
J. References34
1. Existing Data:34
2. Data Supplied with this Service Bulletin:35
3. Installation Drawings Used in the Preparation of this Service Bulletin:35
K. Publications Affected35
L. Interchangeability and Intermixability of Parts35
M. Software Accomplishment Summary35
2. MATERIAL INFORMATION37
A. Material - Price and Availability37
B. Industry Support Information37
C. Parts Necessary for Each Airplane37
1. Kits/Parts37
2. Parts and Materials Supplied by the Operator37
3. Parts Modified and Reidentified37
4. Parts Removed and Not Replaced38
D. Parts Necessary to Change Spares38
E. Special Tooling - Price and Availability39
F. Special Tooling Necessary to do this Service Bulletin39
3. ACCOMPLISHMENT INSTRUCTIONS41
A. GENERAL INFORMATION41
B. WORK INSTRUCTIONS43
FIGURE 1: FLIGHT COMPARTMENT - CAPTAIN'S SEAT TRACKS - FOREIGN OBJECT DEBRIS -
REMOVAL57
FIGURE 2: FLIGHT COMPARTMENT - FIRST OFFICER'S SEAT TRACKS - FOREIGN OBJECT DEBRIS
- REMOVAL59
APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 1: WORK PACKAGE 1 - CAPTAIN’S SEAT – DETAILED INSPECTION AND OVERHAUL OF THE HORIZONTAL
MOVEMENT SYSTEM [Group 1, Configuration 1, 3]61
APPENDIX B: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 2: WORK PACKAGE 2 - FIRST OFFICER'S SEAT – DETAILED INSPECTION AND OVERHAUL OF THE HORIZONTAL
MOVEMENT SYSTEM [Group 1, Configuration 1-2]64
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
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APPENDIX C: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 3: WORK PACKAGE 3 - CAPTAIN’S SEAT – HORIZONTAL ACTUATOR IDENTIFICATION, DETAILED INSPECTION AND OVERHAUL OF THE HORIZONTAL MOVEMENT SYSTEM [Group 1, Configuration 2, 4]
.67
APPENDIX D: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 4: WORK PACKAGE 4 - FIRST OFFICER'S SEAT – HORIZONTAL ACTUATOR IDENTIFICATION, DETAILED INSPECTION AND OVERHAUL OF THE HORIZONTAL MOVEMENT SYSTEM [Group 1,
Configuration 3-4]70
APPENDIX E: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 5: WORK PACKAGE 5 - CAPTAIN’S SEAT – REPEAT ACTIONS - CHECK OF THE HORIZONTAL MOVEMENT SYSTEM
[Group 1, Configuration 1, 3, 5, 7]73
APPENDIX F: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 6: WORK PACKAGE 6 - FIRST OFFICER’S SEAT – REPEAT ACTIONS - CHECK OF THE HORIZONTAL MOVEMENT
SYSTEM [Group 1, Configuration 1-2, 5-6]74
APPENDIX G: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 7: WORK PACKAGE 7 - CAPTAIN’S SEAT – REPEAT ACTIONS - HORIZONTAL ACTUATOR IDENTIFICATION AND CHECK OF THE HORIZONTAL MOVEMENT SYSTEM [Group 1, Configuration 2, 4, 6, 8] . 75 APPENDIX H: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 8: WORK PACKAGE 8 - FIRST OFFICER’S SEAT – REPEAT ACTIONS - HORIZONTAL ACTUATOR IDENTIFICATION AND CHECK OF THE HORIZONTAL MOVEMENT SYSTEM [Group 1, Configuration 3-4, 7-8]
.77
APPENDIX I: CAPTAIN'S AND FIRST OFFICER'S SEATS, PART NUMBER SERIES 3A258, HORIZONTAL MOVEMENT SYSTEM - HORIZONTAL ACTUATOR LOCATION [Group 1, Configuration 2-4,
6-8]79
APPENDIX J: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 9: WORK PACKAGE 9 -
FIRST OFFICER'S SEAT - DETAILED INSPECTION AND OVERHAUL OF THE HORIZONTAL
MOVEMENT SYSTEM [Group 1, Configuration 9]80
APPENDIX K: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 10: WORK PACKAGE 10
- FIRST OFFICER'S SEAT - REPEAT ACTIONS - CHECK OF THE HORIZONTAL MOVEMENT
SYSTEM [Group 1, Configuration 9]83
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 09, 2017 767-25-0549Revision 2: January 27, 2023 4 of 83 BOEING SERVICE BULLETIN 767-25-0549
Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION Revision Transmittal SheetNumber: 767-25-0549Original Issue: May 09, 2017 Revision 2: January 27, 2023 ATA System: 2511 SUBJECT: EQUIPMENT/FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat - Horizontal Movement System Inspection and Overhaul This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Airworthiness Directive AD 2019-14-13 is related to this service bulletin.
The Federal Aviation Administration (FAA) will possibly release an additional Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.
Effects of this Revision on airplanes on which the Original Issue or Revision 1 was previously done:
See Paragraph 1.D., Description for more information.
REASON FOR REVISION This revision is sent to update the revision level of each concurrent supplier service bulletin and to add an option to install a serviceable seat for Condition 4 of Work Packages 3 and 4. Also, this revision is sent to add Ipeco First Officer's seat part numbers 3A090-0078-03-1, 3A090-0078-04-1 and 3A090-0078-05-1 that are identified in Ipeco SB 210-25-05 Issue 5 and Ipeco SB 210-25-06 Issue 5. Compliance tasks for seat part numbers added in this revision are given a new compliance time for all affected airplanes.
These sections were changed:
1. Summary, Background; changed information, added Service Related Problem (SRP) reference, and changed the AD related information in the planning table.
2. Summary, Action; added Engineering Change Memo reference.
3. Summary, Compliance; added AD information.
4. Paragraph 1.A.1., Airplanes; added Configurations for Group 1, changed and added information, listed specific line numbers and line number ranges and replaced the note.
5. Paragraph 1.A.2., Spares Affected; added part numbers.
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Original Issue: May 09, 2017 767-25-0549Revision 2: January 27, 2023 5 of 83
6. Paragraph 1.B., Concurrent Requirements; changed to update the newest issue number of each supplier service bulletin, added part numbers.
7. Paragraph 1.C., Reason; changed information, added SRP reference, and added Revision 2 information.
8. Paragraph 1.D., Description; added Revision 2 information.
9. Paragraph 1.E., Compliance; changed information, added AD information and changed the header of the compliance time columns. Added Option 1 and 2 for Condition 4 of Work Packages 3 and 4, and added Tables 9 and 10.
10. Paragraph 1.F., Approval; changed information and added Alternative Method Of Compliance (AMOC) paragraph.
11. Paragraph 1.G., Manpower; deleted content and removed task relationships of footnote (a) for the tables for Work Packages 1, 2, 3 and 4, deleted footnotes (a) and (b) and added Figure 1 to table for Work Package 5, deleted footnotes (a) and (b) and added Figure 2 to table for Work Package 6, deleted a task from Work Packages 7 and 8, added applicability to tables for Work Packages 5, 6, 7 and 8, and added tables for Work Packages 9 and 10.
12. Paragraph 1.J.1., Existing Data; added references.
13. Paragraph 2.C.2., Parts and Materials Supplied by the Operator; added applicability, corrected table column header.
14. Paragraph 2.C.3., Parts Modified and Reidentified; divided information into two tables and added applicability.
15. Paragraph 3.A., General Information; changed Note 7.
16. Paragraph 3.B., Work Instructions; added Option 1 and Option 2 for Condition 4 of Work Packages 3 and 4, corrected an instruction in Work Package 4, added a note in Work Packages 5 and 6, added Work Packages 9 and 10, changed footnote (a) in the table for Parts 1, 2, 3, 4, 7 and 8, added First Officer's seat part numbers to Part 8, added Parts 9 and 10, and added applicability.
17. Appendix A and Appendix B; added flag note table, added flag note (a) to logic diagrams, and corrected typographical errors.
18. Appendix C and Appendix D; added Option 1 and Option 2 for Condition 4 of Work Packages 3 and 4 to logic diagrams, added flag note (b) to flag note table and logic diagrams, and corrected typographical errors.
19. Appendix E, Appendix F, Appendix G, Appendix H and Appendix I; added applicability.
20. Appendix J and Appendix K; added.
Vertical lines are put on the left edge of each page, except in format changes, to show the location of all content changes.
Pages with no vertical lines have no changes.
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REVISION HISTORY May 09, 2017Original Issue:
August 10, 2018Revision 1:
January 27, 2023Revision 2:
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Original Issue: May 09, 2017 767-25-0549Revision 2: January 27, 2023 7 of 83 BOEING SERVICE BULLETIN 767-25-0549
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 09, 2017 767-25-0549Revision 2: January 27, 2023 8 of 83 BOEING SERVICE BULLETIN 767-25-0549
BLANK PAGE
Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION SummaryNumber: 767-25-0549Original Issue: May 09, 2017 Revision 2: January 27, 2023 ATA System: 2511 SUBJECT: EQUIPMENT/FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat - Horizontal Movement System Inspection and Overhaul BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS DOCUMENT IMMEDIATELY.
CONCURRENT REQUIREMENTS Refer to Paragraph 1.B., Concurrent Requirements.
BACKGROUND Accomplishment of this service bulletin will decrease the risk that the Captain's and First Officer's seats will have un-commanded seat movement because of horizontal actuator shaft failure. If this service bulletin is not done, the output shaft of the horizontal actuator on the Captain's and First Officer's seat(s) could break and cause an un-commanded seat movement. Un-commanded seat movement could lead to reduced controllability of the airplane.
An operator reported the Captain's seat could not be locked in position after the horizontal position of the seat was adjusted in flight. The seat became unlocked from the track and moved freely forward and aft. Control was given to the First Officer for approach and landing. An inspection found the horizontal actuator output shaft had broken. When the horizontal actuator output shaft breaks, pilots cannot prevent seat movement in a forward and aft direction and cannot lock the seat in position. A broken shaft is the result of high loads that are more than design limits or from a stalled motor that can occur due to high mechanical resistance to motion during powered operation of the seat. Any object that can potentially impede seat movement (Foreign Object Debris (FOD)) in the seat tracks is another condition that can result in a stalled motor and cause the horizontal actuator output shaft to break.
This service bulletin gives instructions to find the part number and 'amendment' of the horizontal actuator of the Horizontal Movement System (HMS) of the Captain's and First Officer's seats. If the horizontal actuator has Artus part number AD8650503 at 'Amendment B' or earlier or Artus part number AD8650502, corrective actions are necessary by an off-airplane inspection of the seat by the applicable Ipeco service bulletin, where signs of damage to the HMS make the replacement of the horizontal actuator necessary. If the actuator continues to be Artus part number AD8650503 at 'Amendment B' or earlier or part number AD8650502, repeat on-airplane inspections are necessary for the Captain's and First Officer's seats by the applicable Ipeco service bulletin.
Installation of a horizontal actuator, Artus part number AD8650503 at 'Amendment C' or later, will significantly decrease the risk of a broken horizontal actuator output shaft.
Boeing Service Related Problem (SRP) 767-SRP-25-0306 and 767-SRP-25-0418 are related to this service bulletin.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 09, 2017 767-25-0549Revision 2: January 27, 2023 9 of 83
Boeing Fleet Team Digest 767 FTD 25-12002 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 AffectedYesSpares Affected Paragraph 1.E., Compliance and Paragraph
1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesNoWeight 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/PartsNoKits/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 YesSpecial Tooling Required ACTION (PRR B12901-117S, PRR B12900-277R) Do inspections and checks of the Captain's and First Officer's seats. Do corrective actions.
EFFECTIVITY 767-200/300/300F/400ER Airplane(s) equipped with Ipeco part number series 3A090 and 3A258 Captain's and First Officer's powered seats. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.
Refer to Paragraph 1.A.2., Spares Affected, for the list of affected components.
COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directive AD 2019-14-13 is related to this service bulletin.
The effective date of AD 2019-14-13 is September 12, 2019.
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection and/or repair procedures given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
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BOEING SERVICE BULLETIN 767-25-0549
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability.
FIRST OFFICER'S SEAT
CAPTAIN'S SEAT
DO INSPECTIONS AND CHECKS OF THE CAPTAIN'S AND FIRST OFFICER'S SEATS.
DO CORRECTIVE ACTIONS.
CAPTAIN'S SEAT (TYPICAL) 2383470 (FIRST OFFICER'S SEAT OPPOSITE) Original Issue: May 09, 2017 Revision 2: January 27, 2023 767-25-0549 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. 11 of 83
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 09, 2017 767-25-0549Revision 2: January 27, 2023 12 of 83 BOEING SERVICE BULLETIN 767-25-0549