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Commercial Airplanes 777 Service Bulletin Number: 777-75A0002 Original Issue: January 12, 2011 Revision 1: October 26, 2011 ATA System: 7533 SUBJECT: AIR (RB211 Trent Engines) - Compressor Control - Compressor Bleed Control System
- Intermediate Compressor 8th Stage (IP8) Bleed Air Change Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 730-774). 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:
BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2011 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.
This document includes proprietary information owned by The Boeing Company and/or one or more third parties.
Treatment of the document and the information it contains is governed by contract with Boeing. For more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.
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, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and the Boeing livery 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.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 12, 2011 777-75A0002Revision 1: October 26, 2011 1 of 20
6.0
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Table of Contents
Revision Transmittal Sheet5
Summary7
1. PLANNING INFORMATION ........................................ 1 1 A. Effectivity ............................................... 1 1
1. Airplanes ............................................ 1 1
2. Spares Affected ........................................ 1 2 B. Concurrent Requirements ...................................... 1 2 C. Reason ................................................ 1 3 D. Description .............................................. 1 3 E. Compliance .............................................. 1 3 F. Approval ............................................... 1 4 G. Manpower .............................................. 1 4 H. Weight and Balance Changes .................................... 1 4 I. Electrical Load Data ......................................... 1 4 J. References .............................................. 1 5
1. Existing Data .......................................... 1 5
2. Data supplied with this Service Bulletin ............................ 1 5
3. Installation Drawings Used in the Preparation of this Service Bulletin ............ 1 5 K. Publications Affected ........................................ 1 5 L. Interchangeability and Intermixability of Parts ........................... 1 5
2. MATERIAL INFORMATION ........................................ 1 7 A. Material - Price and Availability ................................... 1 7 B. Industry Support Information .................................... 1 7 C. Parts Necessary For Each Airplane ................................. 1 7
1. Kits/Parts ............................................ 1 7
2. Parts and Materials Supplied by the Operator ........................ 1 7
3. Parts Modified and Reidentified ................................ 1 7
4. Parts Removed and Not Replaced .............................. 1 7 D. Parts Necessary to Change Spares ................................. 1 7 E. Special Tooling - Price and Availability ............................... 1 7 F. Special Tooling Necessary to do this Service Bulletin ....................... 1 7
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 1 9 A. GENERAL INFORMATION ..................................... 1 9 B. WORK INSTRUCTIONS ....................................... 1 9
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Original Issue: January 12, 2011 777-75A0002Revision 1: October 26, 2011 3 of 20 BOEING SERVICE BULLETIN 777-75A0002
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Commercial Airplanes 777 Service Bulletin Revision Transmittal SheetNumber: 777-75A0002Original Issue: January 12, 2011 Revision 1: October 26, 2011 ATA System: 7533 SUBJECT: AIR (RB211 Trent Engines) - Compressor Control - Compressor Bleed Control System
- Intermediate Compressor 8th Stage (IP8) Bleed Air Change This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on the airplane(s) changed in accordance with the original issue of this service bulletin.
REASON FOR REVISION This revision is sent to add the Revision 1 of Boeing Service Bulletin 777-31-0177 and to call out the latest Revision of Rolls-Royce Service Bulletin RB.211-75-G466 in Paragraph 1.B., Concurrent Requirements, and to change the warranty statement.
These sections were changed:
1. In Paragraph 1.B., Concurrent Requirements, added the Revision 1 of Boeing Service Bulletin 777-31-0177 and called out the latest Revision of Rolls-Royce Service Bulletin RB.211-75-G466.
2. In Summary, Industry Support Information and in Paragraph 2.B., Industry Support Information, changed the warranty statement.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location of important changes.
Pages with no vertical lines have no important changes.
REVISION HISTORY January 12, 2011Original Issue:
October 26, 2011Revision 1:
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Commercial Airplanes 777 Service Bulletin SummaryNumber: 777-75A0002Original Issue: January 12, 2011 Revision 1: October 26, 2011 ATA System: 7533 SUBJECT: AIR (RB211 Trent Engines) - Compressor Control - Compressor Bleed Control System
- Intermediate Compressor 8th Stage (IP8) Bleed Air Change
CONCURRENT REQUIREMENTS Refer to Paragraph 1.B., Concurrent Requirements.
BACKGROUND This service bulletin gives instructions to change the intermediate compressor 8th stage (IP8) bleed valve outlet screen for Number 1, Number 2, and Number 4 bleed valves. Additionally, tubing is revised to reverse the Number 1 and Number 2 bleed valve schedule. This action provides revised IP8 bleed air mixing to reduce temperatures experienced by the inner wall of the thrust reverser (TR) during flight to prevent inner wall and fitting damage. If you do not do this service bulletin, the thrust reverser could be damaged by excessive heat which could result in thrust reverser separation at departure which could in turn cause a runway excursion because of thrust asymmetry from forward thrust on a Refused Take Off (RTO).
Accomplishment of the service bulletin will improve the thermal protection of the thrust reverser. The existing Thermal Protection System (TPS) as modified by Boeing Service Bulletins 777-78-0071 and 777-78-0082, was developed to protect the thrust reverser inner wall from the engine side of the thrust reverser. The changes provided by this service bulletin will add thermal protection to the thrust reverser inner wall from the fan duct side of the thrust reverser. Thermal degradation has caused structural pieces of the thrust reverser inner wall to separate from the thrust reverser in flight. Poor mixing of IP8 bleed air contributes to the overheating that results in disbondments and delaminations in the inner wall and weakens the compression and drag link fittings.
Thirteen 777 Rolls-Royce TR events related to thermal damage of the TR inner wall have occurred since 2003.
The events have included such things as Air Turn Backs (ATB), In Flight Shut Downs (IFSD), TR inner wall panel collapse, engine fire loop messages, and TR inner wall panel sections and parts being liberated from the airplane. No hull loss or personal injury has occurred from these events.
Boeing Service Related Problem (SRP) 777-SRP-78-0052 is related to this service bulletin.
ACTION On both engines, open thrust reversers and modify all three intermediate compressor 8th stage (IP8) bleed valves. Modify tubing between right upper and lower bleed valves. Refer to Rolls-Royce SB RB.211-75-G466 for detailed instructions.
EFFECTIVITY 777-200/-300 Airplanes with Rolls-Royce RB211 Trent 800 engines. Refer to Paragraph 1.A.1., Airplanes for the list of affected airplanes.
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Original Issue: January 12, 2011 777-75A0002Revision 1: October 26, 2011 7 of 20
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 change given in this service bulletin be done on each engine within three years after the original issue date of this service bulletin.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes given in this service bulletin.
MANPOWER Manpower Table Elapsed HoursTask HoursNumber of PersonsTask
1.002.002Open Access
1.002.002Close Access
2.04.0TOTAL FOR EACH ENGINE The time to do Rolls-Royce SB RB.211-75-G466 and Boeing Service Bulletin 777-31-0177 is not included.
MATERIAL INFORMATION Operator Supplied Parts/Materials. Refer to Rolls-Royce SB RB.211-75-G466.
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Original Issue: January 12, 2011 777-75A0002Revision 1: October 26, 2011 8 of 20 BOEING SERVICE BULLETIN 777-75A0002
BOEING SERVICE BULLETIN 777-75A0002
COMPRESSOR
GAS GENERATOR
FAIRING
MODIFY UPPER RIGHT (NUMBER 2)
BLEED VALVE
MODIFY TUBING (NOT
SHOWN) FROM BLEED
VALVES TO BLEED VALVE
CONTROLLER MODIFY LOWER RIGHT (NUMBER 1)
BLEED VALVE
MODIFY TUBING (NOT
SHOWN) FROM BLEED
VALVES TO BLEED VALVE
CONTROLLER
MODIFY LOWER LEFT (NUMBER 4) BLEED VALVE 1983394 Original Issue: January 12, 2011 Revision 1: October 26, 2011 777-75A0002
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Commercial Airplanes 777 Service Bulletin Number: 777-75A0002 Original Issue: January 12, 2011 Revision 1: October 26, 2011 ATA System: 7533 SUBJECT: AIR (RB211 Trent Engines) - Compressor Control - Compressor Bleed Control System
- Intermediate Compressor 8th Stage (IP8) Bleed Air Change
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index Document D624W001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplanes shown below.
DESCRIPTIONCONFIGURATIONGROUP 777-200/-300 airplanes through line number 796 with Rolls-Royce RB211 Trent 800 engines.
-1 Airplane Models:
777-200, 777-300 GroupVariable Number 1WA001 1WA086 - WA093 1WA101 - WA104 1WA196 - WA198 1WB031 - WB042 1WB044 - WB046 1WB101 - WB106 1WB161 - WB177 1WB181 - WB194 1WB201 - WB215
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GroupVariable Number 1WB231 - WB247 1WB416 - WB439 1WB446 - WB453 1WB501 - WB512 1WB601 - WB606 1WB611 - WB622 1WB631 - WB638 1WB646 - WB649 1WC051 - WC073 1WC101 - WC104 1WC456 - WC459 1WC486 - WC493 1WC531 - WC536 1WC566 - WC567 1WC571 - WC574
2. Spares Affected Modify spare engines in accordance with Rolls-Royce SB RB.211-75-G466.
B. Concurrent Requirements The service bulletins listed below must be done before or at the same time as this service bulletin:
DescriptionService BulletinCompany
AIR - IP BLEED VALVES - INTRODUCTION OF AN IP8 BLEED VALVE FEATURING A
REVISED SILENCER AND ASSOCIATED
CORE ENGINE DRESSINGS CHANGES Rolls-Royce SB RB.211-75-G466 dated Jun.20/11 Rolls-Royce
INDICATING/RECORDING SYSTEMS - Airplane Information Management System - Aero Engine Data Base Software Upgrade 777-31-0177 Original Issue or Revision 1Boeing
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