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Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION Number: 767-25-0539 Original Issue: January 09, 2014 Revision 2: January 27, 2023 ATA System: 2511 SUBJECT: EQUIPMENT / FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat - Manual Override Cable Inspection and Adjustment 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 © 2014 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Unpublished Work.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: January 09, 2014 767-25-0539Revision 2: January 27, 2023 1 of 41
4.0
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 2 of 41 BOEING SERVICE BULLETIN 767-25-0539
BLANK PAGE
Table of Contents
Revision Transmittal Sheet5
Summary9
1. PLANNING INFORMATION13
A. Effectivity13
1. Airplanes13
2. Spares Affected15
B. Concurrent Requirements15
C. Reason16
D. Description17
E. Compliance18
F. Approval18
G. Manpower19
H. Weight and Balance Changes20
I. Electrical Load Data20
J. References20
1. Existing Data:20
2. Data Supplied with this Service Bulletin:20
3. Installation Drawings Used in the Preparation of this Service Bulletin:20
K. Publications Affected20
L. Interchangeability and Intermixability of Parts20
M. Software Accomplishment Summary21
2. MATERIAL INFORMATION23
A. Material - Price and Availability23
B. Industry Support Information23
C. Parts Necessary for Each Airplane23
1. Kits/Parts23
2. Parts and Materials Supplied by the Operator23
3. Parts Modified and Reidentified23
4. Parts Removed and Not Replaced23
D. Parts Necessary to Change Spares23
E. Special Tooling - Price and Availability23
F. Special Tooling Necessary to do this Service Bulletin23
3. ACCOMPLISHMENT INSTRUCTIONS25
A. GENERAL INFORMATION25
B. WORK INSTRUCTIONS26
FIGURE 1: FLIGHT COMPARTMENT SEATS - SEAT IDENTIFICATION40
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 3 of 41 BOEING SERVICE BULLETIN 767-25-0539
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 4 of 41 BOEING SERVICE BULLETIN 767-25-0539
BLANK PAGE
Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION Revision Transmittal SheetNumber: 767-25-0539Original Issue: January 09, 2014 Revision 2: January 27, 2023 ATA System: 2511 SUBJECT: EQUIPMENT / FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat - Manual Override Cable Inspection and Adjustment 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:
ActionConditionGroup Do "Captain's and First Officer's Seats Inspection and Manual Override Cable Adjustment with any Ipeco seat part number 3A090-0078-03-1, 3A090-0078-04-1, 3A090-0078-05-1, 3A258- 0007-01-1Z, 3A258-0008-01-1Z, 3A258-0041- 01-1Z or 3A258-0042-01-1Z" in accordance with Work Instructions.
Airplanes that have been inspected and have done all applicable corrective actions for the installed Captain's and First Officer's seats that were identified in the Original Issue or Revision 1 of this service bulletin.
Group 1, Configuration 2
REASON FOR REVISION This revision is sent to add new requirements for Ipeco seat part numbers 3A090-0078-03-1, 3A090-0078-04-1, 3A090-0078-05-1, 3A258-0007-01-1Z, 3A258-0008-01-1Z, 3A258-0041-01-1Z and 3A258-0042-01-1Z. This revision is also sent to list newer issue numbers for each concurrent supplier service bulletin, and to add conditional information for Ipeco seats that used specific revisions of Ipeco Component Maintenance Manuals (CMMs) to do manual override cable maintenance.
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 applicability, added Engineering Change Memo reference, changed and added information.
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Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 5 of 41
3. Summary, Compliance; changed information and added AD information.
4. Summary, Illustration; changed and added information.
5. 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.
6. Paragraph 1.A.2., Spares Affected; added part numbers.
7. Paragraph 1.B., Concurrent Requirements; added applicability, changed to give the newest issue of each supplier service bulletin, corrected a typographical error in footnote (c), changed footnotes (a) thru (f), added footnotes (g) and (h).
8. Paragraph 1.C., Reason; changed information, added SRP reference, and added Revision 2 information.
9. Paragraph 1.D., Description; added applicability, changed and added information, and added Revision 2 information.
10. Paragraph 1.E., Compliance; added and changed information, and added applicability.
11. Paragraph 1.F., Approval; changed information, added Alternative Method Of Compliance (AMOC) paragraph.
12. Paragraph 1.G., Manpower; added applicability, added a footnote and changed information.
13. Paragraph 1.J.1., Existing Data; added references.
14. Paragraph 2.C.2., Parts and Materials Supplied by the Operator; changed information.
15. Paragraph 3.B., Work Instructions:
a. added Ipeco and Boeing seat part numbers
b. added Ipeco CMMs and listed newer issue numbers for each Ipeco service bulletin
c. added conditional information for manual override cable maintenance history
d. changed the list to identify 'Captain's and First Officer's Seats Inspection and Manual Override Cable Adjustment' and added a list for 'Captain's and First Officer's Seats Inspection and Manual Override Cable Adjustment with Ipeco seat part number 3A090-0078-03-1, 3A090-0078-04-1, 3A090-0078-05-1, 3A258-0007-01-1Z, 3A258-0008-01-1Z, 3A258-0041-01-1Z or 3A258-0042-01-1Z'
e. changed the 'serviceable seat' definition for part number series 3A090 and 3A258 seats and added applicability
f. changed an instruction, corrected an instruction, added information, and added applicability 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.
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Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 6 of 41 BOEING SERVICE BULLETIN 767-25-0539
REVISION HISTORY January 09, 2014Original Issue:
July 17, 2018Revision 1:
January 27, 2023Revision 2:
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Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 7 of 41 BOEING SERVICE BULLETIN 767-25-0539
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 8 of 41 BOEING SERVICE BULLETIN 767-25-0539
BLANK PAGE
Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION SummaryNumber: 767-25-0539Original Issue: January 09, 2014 Revision 2: January 27, 2023 ATA System: 2511 SUBJECT: EQUIPMENT / FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat - Manual Override Cable Inspection and Adjustment 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 make sure that Captain's and First Officer's seats do not have un-commanded movement due to an improperly adjusted cable for the manual release lever. If this service bulletin is not done, the manual control lever cable could be incorrectly adjusted which could result in its clutch mechanism not engaging correctly and cause an un-commanded seat movement. An un-commanded seat movement during a critical part of a flight, such as take-off or landing could cause a flight control obstruction or unintended flight control input which could result in the loss of the ability to control the airplane.
A 747 operator reported that during a takeoff, the First Officer's seat unlocked from its seat tracks and moved aft. The First Officer was unable to control the airplane and the captain took over the controls to avoid a rejected takeoff. The unlocking of the seat from the seat tracks was caused by actuator damage which was a result of incorrect adjustment of the seats manual release lever cable, allowing the clutch mechanisms to only partially engage. Because 767 airplanes use the same seats in the flight compartment, Boeing has issued this service bulletin to do a one-time inspection, and if necessary an adjustment, in accordance with an Ipeco Service Bulletin.
Three Ipeco Service Bulletins have been issued to account for different part number seats installed. Because of in-service seat interchangeability, operators are told to inspect the part number of the seats installed and use the applicable Ipeco Service Bulletin.
This service bulletin gives instructions to find the identification of the installed Captain's and First Officer's seats, and to do an inspection, and if necessary, an adjustment, of each affected seats' fore/aft manual control lever and vertical manual control lever in accordance with an Ipeco Service Bulletin. The inspection, and if necessary, the adjustment, of the manual control levers of the Captain's and First Officer's seats, will make sure that the seats do not have un-commanded seat movement due to improperly adjusted fore/aft and vertical manual control levers.
Boeing Service Related Problem (SRP) 767-SRP-25-0320 and 767-SRP-25-0418 are related to this service bulletin.
Boeing Fleet Team Digest (FTD) 767 FTD 25-13003 is related to this service bulletin.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 9 of 41
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 AffectedNoPublications 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 NoOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION (PRR B12900-277R) Find the part number of the installed Captain's and First Officer's seats. If specific seat part numbers are found, find the serial number of those seats, and find their manual override cable maintenance history. For each affected Captain's and First Officer's seat, do a Detailed Inspection of the fore/aft manual control lever and the vertical manual control lever on each seat for looseness in accordance with the applicable Ipeco Service Bulletin. If a control lever inspection is not within limits, remove the seat and install a serviceable seat. Do an operational test of each adjusted seat.
NOTE: A serviceable seat in this service bulletin is defined as part number 3A258-0041-01-2 (Captain's) and part number 3A258-0042-01-2 (First Officer's), or it is a seat that has done the inspections and all applicable corrective actions in accordance with the applicable Ipeco service bulletin. Or, it is a seat that has completed manual override cable maintenance done on it in accordance with Ipeco Component Maintenance Manual (CMM) 25-10-87, Revision 28 or later, or in accordance with Ipeco CMM 25-11-38, Revision 21 or later.
EFFECTIVITY 767-200/300/300F/400ER Airplanes. 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.
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Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 10 of 41 BOEING SERVICE BULLETIN 767-25-0539
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection and adjustment given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION None.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 09, 2014 767-25-0539Revision 2: January 27, 2023 11 of 41 BOEING SERVICE BULLETIN 767-25-0539
BOEING SERVICE BULLETIN 767-25-0539
FIRST OFFICER'S
SEAT FIND THE PART NUMBER OF THE INSTALLED CAPTAIN'S AND FIRST OFFICER'S SEATS.
FIND THE SERIAL NUMBER OF SPECIFIC
SEAT PART NUMBERS , AND FIND THEIR MANUAL OVERRIDE CABLE MAINTENANCE HISTORY.
FOR EACH AFFECTED CAPTAIN'S AND -IRST OFFICER'S SEAT, DO A
DETAILED INSPECTION OF THE
VERTICAL MANUAL CONTROL LEVER
FOR LOOSENESS IN ACCORDANCE
WITH THE APPLICABLE IPECO
SERVICE BULLETIN
IF A CONTROL LEVER INSPECTION IS
NOT WITHIN LIMITS, REMOVE THE
SEAT AND INSTALL A SERVICEABLE SEAT. DO AN OPERATIONAL TEST OF EACH ADJUSTED SEAT.
-WD
CAPTAIN'S SEAT
FIRST OFFICER'S SEAT OPPOSITE (TYPICAL) (RIGHT SIDE VIEW) FWD
CAPTAIN'S SEAT
FIRST OFFICER'S SEAT OPPOSITE (TYPICAL (LEFT SIDE VIEW
FOR EACH AFFECTED CAPTAIN'S AND
FIRST OFFICER'S SEAT, DO A DETAILED
INSPECTION OF THE FORE/AFT MANUAL
CONTROL LEVER FOR LOOSENESS IN
ACCORDANCE WITH THE APPLICABLE IPECO SERVICE BULLETIN. IF A CONTROL
LEVER INSPECTION IS NOT WITHIN
LIMITS, REMOVE THE SEAT AND INSTALL A SERVICEABLE SEAT. DO AN SEAT. OPERATIONAL TEST OF EACH ADJUSTED 2304527 Original Issue: January 09, 2014 Revision 2: January 27, 2023 767-25-0539 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. 12 of 41