Boeing Special Attention Service Bulletin 777-25-0619: SB-777-25-0619-02, text

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Commercial Airplanes 777 Service Bulletin

SPECIAL ATTENTION Number: 777-25-0619 Original Issue: February 23, 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:

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: February 23, 2017 777-25-0619Revision 2: January 27, 2023 1 of 53

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Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 2 of 53 BOEING SERVICE BULLETIN 777-25-0619

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Table of Contents

Revision Transmittal Sheet5

Summary7

1. PLANNING INFORMATION11

A. Effectivity11

1. Airplanes11

2. Spares Affected14

B. Concurrent Requirements14

C. Reason14

D. Description15

E. Compliance16

F. Approval21

G. Manpower21

H. Weight and Balance Changes24

I. Electrical Load Data24

J. References24

1. Existing Data:24

2. Data Supplied with this Service Bulletin:24

3. Installation Drawings Used in the Preparation of this Service Bulletin:25

K. Publications Affected25

L. Interchangeability and Intermixability of Parts25

M. Software Accomplishment Summary25

2. MATERIAL INFORMATION27

A. Material - Price and Availability27

B. Industry Support Information27

C. Parts Necessary for Each Airplane27

1. Kits/Parts27

2. Parts and Materials Supplied by the Operator27

3. Parts Modified and Reidentified27

4. Parts Removed and Not Replaced28

D. Parts Necessary to Change Spares28

E. Special Tooling - Price and Availability28

F. Special Tooling Necessary to do this Service Bulletin28

3. ACCOMPLISHMENT INSTRUCTIONS29

A. GENERAL INFORMATION29

B. WORK INSTRUCTIONS31

FIGURE 1: FLIGHT COMPARTMENT - CAPTAIN'S SEAT TRACKS - FOREIGN OBJECT DEBRIS -

REMOVAL39

FIGURE 2: FLIGHT COMPARTMENT - FIRST OFFICER'S SEAT TRACKS - FOREIGN OBJECT DEBRIS

- REMOVAL41

APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 1: WORK PACKAGE 1 -

CAPTAIN'S SEAT - HORIZONTAL ACTUATOR IDENTIFICATION, DETAILED INSPECTION

AND OVERHAUL OF THE HORIZONTAL MOVEMENT SYSTEM43

APPENDIX B: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 2: WORK PACKAGE 2 -

FIRST OFFICER'S SEAT - HORIZONTAL ACTUATOR IDENTIFICATION, DETAILED

INSPECTION AND OVERHAUL OF THE HORIZONTAL MOVEMENT SYSTEM46

Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 3 of 53 BOEING SERVICE BULLETIN 777-25-0619

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APPENDIX C: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 3: WORK PACKAGE 3 -

CAPTAIN'S SEAT - REPEAT ACTIONS - HORIZONTAL ACTUATOR IDENTIFICATION AND

CHECK OF THE HORIZONTAL MOVEMENT SYSTEM49

APPENDIX D: LOGIC DIAGRAM FOR PARAGRAPH 1.E., COMPLIANCE: TABLE 4: WORK PACKAGE 4 -

FIRST OFFICER'S SEAT - REPEAT ACTIONS - HORIZONTAL ACTUATOR IDENTIFICATION

AND CHECK OF THE HORIZONTAL MOVEMENT SYSTEM51

APPENDIX E: CAPTAIN'S AND FIRST OFFICER'S SEATS HORIZONTAL MOVEMENT SYSTEM -

HORIZONTAL ACTUATOR - LOCATION53

Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 4 of 53 BOEING SERVICE BULLETIN 777-25-0619

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Commercial Airplanes 777 Service Bulletin

SPECIAL ATTENTION Revision Transmittal SheetNumber: 777-25-0619Original Issue: February 23, 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 2019-16-05 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:

None.

REASON FOR REVISION This revision is sent to list a newer issue number for each concurrent supplier service bulletin and to add an option to install a serviceable seat for Condition 2 of Work Packages 1 and 2.

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; changed and added information, listed specific line numbers and line number ranges, and removed the note.

5. Paragraph 1.B., Concurrent Requirements; changed to list newer issue numbers of each supplier service bulletin.

6. Paragraph 1.C., Reason; changed information, added SRP reference, and added Revision 2 information.

7. Paragraph 1.D., Description; added Revision 2 information.

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8. Paragraph 1.E., Compliance; changed information, added AD information and changed the header of the compliance time columns. Added Option 1 and Option 2 for Condition 2 of Work Packages 1 and

2. Changed action wording to 'install a serviceable Captain's seat' in Option 3 for Condition 4 of Work Package 1. Deleted logic diagrams information.

9. Paragraph 1.F., Approval; changed information and added Alternative Method Of Compliance (AMOC) paragraph.

10. Paragraph 1.G., Manpower; deleted content and removed task relationships of footnote (b) of tables for Work Packages 1 and 2, deleted content and removed task relationships of footnote (a) of tables for Work Packages 3 and 4, changed footnote (a) for tables of Work Packages 1 and 2, changed footnote (b) for tables of Work Packages 3 and 4, and removed a task from the table for Work Packages 3 and 4.

11. Paragraph 1.J.1., Existing Data; added references.

12. Paragraph 1.L., Interchangeability and Intermixability of Parts; corrected information.

13. Paragraph 3.B., Work Instructions; corrected the instruction for Condition 1 (Action 1) of Work Package 2, and added Option 1 and Option 2 for Condition 2 of Work Packages 1 and 2. Added 'Captain's' and 'First Officer's', where applicable, to agree with Paragraph 1.E., Compliance.

14. Appendix A and Appendix B; added Option 1 and Option 2 for Condition 2 of Work Packages 1 and 2 to logic diagrams, and corrected typographical errors. Added 'Captain's' and 'First Officer's', where applicable, to agree with Paragraph 1.E., Compliance and Paragraph 3.B., Work Instructions.

15. Appendix C and Appendix D; added 'Captain's' and 'First Officer's', where applicable, to agree with Paragraph 1.E., Compliance and Paragraph 3.B., Work Instructions.

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 February 23, 2017Original Issue:

August 08, 2018Revision 1:

January 27, 2023Revision 2:

Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 6 of 53 BOEING SERVICE BULLETIN 777-25-0619

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Commercial Airplanes 777 Service Bulletin

SPECIAL ATTENTION SummaryNumber: 777-25-0619Original Issue: February 23, 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 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.

A 777 operator reported that the Captain's seat could not be locked in position after horizontal seat position adjustment 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 horizontal actuator output shaft breaks, the pilot 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, from a stalled motor that can occur due to high mechanical resistance to motion during powered operation of the seat. 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 Artus 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) 777-SRP-25-0306 and 777-SRP-25-0418 are related to this service bulletin.

Boeing Fleet Team Digest 777 FTD 25-12002 is related to this service bulletin.

Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 7 of 53

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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 61777-278R, PRR 62777-99S) Do inspections of the Captain's and First Officer's seats. Do corrective actions.

EFFECTIVITY 777-200, -200LR, -300, -300ER, and 777F Airplane(s). 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 2019-16-05 is related to this service bulletin.

The effective date of AD 2019-16-05 is October 8, 2019.

Refer to Paragraph 1.E., Compliance.

INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes, inspection and/or repair procedures given in this service bulletin.

Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 8 of 53 BOEING SERVICE BULLETIN 777-25-0619

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MANPOWER Refer to Paragraph 1.G., Manpower.

MATERIAL INFORMATION Operator Supplied Parts/Materials.

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

Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 9 of 53 BOEING SERVICE BULLETIN 777-25-0619

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BOEING SERVICE BULLETIN 777-25-0619 FIRST

OFFICER'S SEAT

CAPTAIN'S SEAT

DO INSPECTIONS OF THE CAPTAIN'S AND FIRST OFFICER'S SEATS.

DO CORRECTIVE ACTIONS.

FWD CAPTAIN'S SEAT 2385006 (FIRST OFFICER'S SEAT OPPOSITE) Original Issue: February 23, 2017 Revision 2: January 27, 2023 777-25-0619 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. 10 of 53

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Commercial Airplanes 777 Service Bulletin

1. PLANNING INFORMATION A. Effectivity

1. Airplanes Refer to Service Bulletin Index D624W001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.

This bulletin is applicable to 777-200, 777-200LR, 777-300, 777-300ER, 777F Airplane(s), line number(s) 1-1566, 1568-1573, 1575-1580, 1582-1586, 1588-1604, 1606-1610, 1612-1614, 1616-1619, 1621-1623, 1625-1628, 1630-1632, 1634-1637, 1639-1641, 1643-1646, 1648-1650, 1652-1655, 1657-1658, 1660-1667, 1669, 1671, 1673, 1675-1676, 1678-1679, 1681, 1683-1684, 1686-1687, 1689-1715, 1717-1722, 1724-1727, 1729-1736, 1738-9999 in 1 Group(s). Where the effectivity is presented with hyphens between line numbers, the airplane applicability means "through" and "inclusive", e.g. line numbers 1-9 means line numbers 1 through 9 inclusive.

The Variable Numbers and Group Information for the applicable airplanes is given below. An equivalent change is on subsequent production airplanes. Refer to PRR 61777-278R and PRR 62777-99S for data about this change.

NOTE: The Variable Number table below includes affected airplanes available as of the issue date of this bulletin. Affected airplane Variable Numbers added to MyBoeingFleet.com after the issue date of this bulletin will be shown using the Maintenance Performance Toolbox EFFECTIVITY search function result.

DESCRIPTIONCONFIGURATIONGROUP 777-200/200LR/300/300ER/777F Airplanes equipped with Ipeco Captain's or First Officer's seats, series number 3A201 or 3A258.

-1 Airplane Models:

Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 11 of 53

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GroupVariable Number 1WA001 - WA017 1WA076 - WA080 1WA086 - WA093 1WA101 - WA104 1WA116 - WA119 1WA131 - WA137 1WA171 - WA175 1WA196 - WA198 1WA206 - WA212 1WA221 - WA223 1WA231 - WA232 1WA241 - WA250 1WA261 - WA266 1WA281 - WA283 1WA301 - WA304 1WB001 - WB021 1WB031 - WB046 1WB051 - WB088 1WB101 - WB106 1WB121 - WB125 1WB131 - WB148 1WB151 - WB155 1WB161 - WB177 1WB181 - WB194 1WB201 - WB215 1WB231 - WB247 1WB271 - WB273 1WB276 - WB286 1WB291 - WB302 1WB306 - WB307 1WB311 - WB337 1WB341 - WB342 1WB366 - WB368 GroupVariable Number 1WB371 - WB388 1WB406 1WB411 - WB413 1WB416 - WB439 1WB446 - WB453 1WB476 1WB481 - WB484 1WB501 - WB512 1WB531 - WB537 1WB551 - WB554 1WB591 - WB597 1WB601 - WB606 1WB611 - WB622 1WB631 - WB638 1WB646 - WB649 1WC051 - WC073 1WC101 - WC104 1WC111 - WC120 1WC221 - WC224 1WC241 - WC243 1WC281 - WC290 1WC301 - WC308 1WC361 - WC364 1WC371 - WC374 1WC381 - WC395 1WC441 1WC446 - WC449 1WC456 - WC459 1WC486 - WC493 1WC506 - WC508 1WC521 - WC522 1WC531 - WC536 1WC546 - WC548 GroupVariable Number 1WC556 1WC566 - WC567 1WC571 - WC574 1WC581 1WC586 - WC587 1WC591 - WC595 1WD001 - WD002 1WD011 - WD018 1WD031 - WD036 1WD046 - WD055 1WD066 - WD075 1WD081 - WD089 1WD091 1WD096 1WD101 - WD106 1WD111 - WD112 1WD116 - WD117 1WD121 - WD123 1WD156 1WD501 - WD513 1WD521 - WD541 1WD546 - WD554 1WD561 - WD573 1WD581 - WD599 1WD606 - WD609 1WD621 - WD632 1WD651 - WD665 1WD671 - WD677 1WD691 - WD709 1WD741 - WD752 1WD761 - WD771 1WD786 - WD788 1WD796 - WD837 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.

Original Issue: February 23, 2017 777-25-0619Revision 2: January 27, 2023 12 of 53 BOEING SERVICE BULLETIN 777-25-0619

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