Boeing Special Attention Service Bulletin 757-25-0309: Revision 1, text

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Commercial Airplanes 757 Service Bulletin

SPECIAL ATTENTION Number: 757-25-0309 Original Issue: June 11, 2014 Revision 1: July 02, 2018 ATA System: 2511 SUBJECT: EQUIPMENT / FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat Part Number Inspection - Manual Override Adjustment Check 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: June 11, 2014 757-25-0309Revision 1: July 02, 2018 1 of 22

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Original Issue: June 11, 2014 757-25-0309Revision 1: July 02, 2018 2 of 22 BOEING SERVICE BULLETIN 757-25-0309

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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. Compliance13

F. Approval13

G. Manpower14

H. Weight and Balance Changes14

I. Electrical Load Data15

J. References15

1. Existing Data:15

2. Data Supplied with this Service Bulletin:15

3. Installation Drawings Used in the Preparation of this Service Bulletin:15

K. Publications Affected15

L. Interchangeability and Intermixability of Parts15

M. Software Accomplishment Summary15

2. MATERIAL INFORMATION17

A. Material - Price and Availability17

B. Industry Support Information17

C. Parts Necessary for Each Airplane17

1. Kits/Parts17

2. Parts and Materials Supplied by the Operator17

3. Parts Modified and Reidentified17

4. Parts Removed and Not Replaced17

D. Parts Necessary to Change Spares17

E. Special Tooling - Price and Availability17

F. Special Tooling Necessary to do this Service Bulletin17

3. ACCOMPLISHMENT INSTRUCTIONS19

A. GENERAL INFORMATION19

B. WORK INSTRUCTIONS20

FIGURE 1: FLIGHT COMPARTMENT SEATS - SEAT PART NUMBER INSPECTION21

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Commercial Airplanes 757 Service Bulletin

SPECIAL ATTENTION Revision Transmittal SheetNumber: 757-25-0309Original Issue: June 11, 2014 Revision 1: July 02, 2018 ATA System: 2511 SUBJECT: EQUIPMENT / FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat Part Number Inspection - Manual Override Adjustment Check This revision includes all pages of the service bulletin.

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

None.

REASON FOR REVISION This revision is sent to update the concurrent requirements table to list the current issues of the Ipeco service bulletins. And, all references to Ipeco service bulletin 098-25-03 were removed, because it does not apply to the 757 model airplane.

These sections were changed:

1. Summary - Planning Data: Changed "and/or" to "and".

2. Summary - Action: Removed Ipeco service bulletin 098-25-03.

3. Summary - Industrial Support Information: Changed "and/or" to "and".

4. Paragraph 1.B., Concurrent Requirements: Changed the issue number of Ipeco service bulletins.

Removed Ipeco service bulletin 098-25-03.

5. Paragraph 1.D., Description: Added Revision 1 information. Removed Ipeco service bulletin 098-25-03.

6. Paragraph 1.G., Manpower: Removed Ipeco service bulletin 098-25-03.

7. Paragraph 1.J.1., Existing Data: Removed Ipeco service bulletin 098-25-03.

8. Paragraph 1.K., Publications Affected: Changed "and/or" to "and".

9. Paragraph 2.B., Industry Support Information: Changed "and/or" to "and".

10. Paragraph 2.D., Parts Necessary to Change Spares: Removed Ipeco service bulletin 098-25-03.

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11. Paragraph 3.B., Work Instructions: Step 2.b, and 4.b, removed Ipeco service bulletin 098-25-03. Step

4.a, 4.c, changed "and/or" to "and". Added reference to Concurrent Requirement table.

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 June 11, 2014Original Issue:

July 02, 2018Revision 1:

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Commercial Airplanes 757 Service Bulletin

SPECIAL ATTENTION SummaryNumber: 757-25-0309Original Issue: June 11, 2014 Revision 1: July 02, 2018 ATA System: 2511 SUBJECT: EQUIPMENT / FURNISHINGS - Flight Compartment Seats - Captain's and First Officer's Seat Part Number Inspection - Manual Override Adjustment Check 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. A manual control lever cable that is improperly adjusted could result in its clutch mechanism not engaging correctly and cause an un-commanded seat movement. If this service bulletin is not done, an un-commanded seat movement during a critical part of a flight, such as take-off or landing may occur, causing 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 it's 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 mechanism to only partially engage. Because 757 airplanes use the same seats in the flight compartment, Boeing has issued this service bulletin to do a one time adjustment check 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 inspect for the part numbers of the captain's and first officer's seats and to do a manual override cable adjustment check of the fore/aft manual control cable and the vertical manual control cable on each seat in accordance with an Ipeco Service Bulletin. The inspection for part number determination, 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) 757-SRP-25-0320 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 757 FTD 25-13001 is related to this service bulletin.

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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 NoAD 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 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 Get access to the flight compartment. Inspect for the part number of the captain's and first officer's seat that is installed on the airplane and compare with part numbers listed on supplier service bulletins Ipeco SB 210-25-04 or Ipeco SB 258-25-08. If the part numbers on the airplane are listed in supplier service bulletins Ipeco SB 210-25-04 or Ipeco SB 258-25-08, do a manual override cable adjustment check of captain's and first officer's seats in accordance with the applicable Ipeco Service Bulletin.

EFFECTIVITY 757-200 Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.

COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.

Boeing recommends that the inspection/adjustment check given in this service bulletin be done within 72 months after the original issue date of this service bulletin.

INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection and adjustment check given in this service bulletin.

MANPOWER Refer to Paragraph 1.G., Manpower.

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BOEING SERVICE BULLETIN 757-25-0309

MATERIAL INFORMATION None.

INSPECT FOR THE PART NUMBER OF THE

CAPTAIN'S AND FIRST OFFICER'S SEAT INSTALLED ON THE AIRPLANE.

DO A MANUAL OVERRIDE

CABLE ADJUSTMENT CHECK

IN ACCORDANCE WITH THE

APPLICABLE IPECO SERVICE BULLETIN.

VERTICAL

CONTROL LEVER FWD

CAPTAIN'S SEAT

FIRST OFFICER'S SEAT OPPOSITE (TYPICAL) (LEFT SIDE VÍEW)

FORE/AFT

CONTROL LEVER

DO A MANUAL OVERRIDE

CABLE ADJUSTMENT CHECK

IN ACCORDANCE WITH THE

APPLICABLE IPECO SERVICE BULLETIN.

CAPTAIN'S SEAT

FIRST OFFICER'S SEAT OPPOSITE (TYPICAL) (RIGHT SIDE VIEW) Original Issue: June 11, 2014 Revision 1: July 02, 2018 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 757-25-0309 Work - See page 1 for details. 9 of 22

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Commercial Airplanes 757 Service Bulletin

1. PLANNING INFORMATION A. Effectivity

1. Airplanes Refer to Service Bulletin Index D624N001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.

This service bulletin is for the airplanes shown below.

DESCRIPTIONCONFIGURATIONGROUP 757-200 Airplanes line numbers 553 thru 959, delivered with Ipeco powered captain's and first officer's seats.

-1 Airplane Models:

757-200 GroupVariable Number 1NC151 1NC161 1ND241 - ND248 1NE301 - NE302 1NP901 - NP904 1NT441 - NT442 1NT720 - NT730 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

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GroupVariable Number 1NT901 - NT916

2. Spares Affected Refer to the supplier service bulletins Ipeco SB 210-25-04 or Ipeco SB 258-25-08 for the list of affected parts that may be in spares and affected.

B. Concurrent Requirements One of the service bulletins listed below must be done at the same time as this service bulletin:

DescriptionService BulletinCompany Captain's and first officer's seat manual override cable adjustment check.

Ipeco SB 210-25-04 Issue 2

(a)(b) Ipeco Captain's and first officer's seat manual override cable adjustment check.

Ipeco SB 258-25-08 Issue 4

(c)(d) Ipeco

(a) Applicable to airplanes with captain's seat part numbers 3A090-0077-02-1 installed.

(b) Applicable to airplanes with first officer's seat part numbers 3A090-0078-02-1 or 3A090- 0078-03-1 or 3A090-0078-05-1 installed.

(d) Applicable to airplanes with first officer's seat part numbers 3A258-0008-01-1 or 3A258- 0042-01-1 installed.

C. Reason 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. A manual control lever cable that is improperly adjusted could result in its clutch mechanism not engaging correctly and cause an un-commanded seat movement. If this service bulletin is not done, an un-commanded seat movement during a critical part of a flight, such as take-off or landing may occur, causing a flight control obstruction or unintended flight control input which could result in the loss of the ability to control the airplane.

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