Boeing ASB 777-28A0039: Boeing Service Bulletin, text

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Commercial Airplanes 777 Service Bulletin Number: 777-28A0039 Original Issue: June 13, 2008 Revision 2: September 20, 2010 ATA System: 2822 2409 SUBJECT: FUEL - Engine Fuel Feed System - Electrical Load Management (ELM) System - Software 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BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2008 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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.

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Original Issue: June 13, 2008 777-28A0039Revision 2: September 20, 2010 2 of 58 BOEING SERVICE BULLETIN 777-28A0039

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Table of Contents

Revision Transmittal Sheet5

Summary7

1. PLANNING INFORMATION9

A. Effectivity9

1. Airplanes9

2. Spares Affected ........................................ 1 6 B. Concurrent Requirements ...................................... 1 6 C. Reason ................................................ 1 7 D. Description .............................................. 1 8 E. Compliance .............................................. 1 9 F. Approval ............................................... 1 9 G. Manpower .............................................. 2 0 H. Weight and Balance Changes .................................... 2 0 I. Electrical Load Data ......................................... 2 0 J. References .............................................. 2 0

1. Existing Data: ......................................... 2 0

2. Data supplied with this Service Bulletin: ........................... 2 0

3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 1 K. Publications Affected ........................................ 2 1 L. Interchangeability and Intermixability of Parts ........................... 2 1

2. MATERIAL INFORMATION ........................................ 2 3 A. Material - Price and Availability ................................... 2 3 B. Industry Support Information .................................... 2 3 C. Parts Necessary For Each Airplane ................................. 2 3

1. Kits/Parts: ........................................... 2 3

2. Parts and Materials Supplied by the Operator: ........................ 2 3

3. Parts Modified and Reidentified: ............................... 4 3

4. Parts Removed and Not Replaced: .............................. 4 3 D. Parts Necessary to Change Spares ................................. 4 3 E. Special Tooling - Price and Availability ............................... 4 3 F. Special Tooling Necessary to do this Service Bulletin ....................... 4 3

3. ACCOMPLISHMENT INSTRUCTIONS .................................. 4 5 A. GENERAL INFORMATION ..................................... 4 5 B. WORK INSTRUCTIONS ....................................... 4 5

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Commercial Airplanes 777 Service Bulletin Revision Transmittal SheetNumber: 777-28A0039Original Issue: June 13, 2008 Revision 2: September 20, 2010 ATA System: 2822 2409 SUBJECT: FUEL - Engine Fuel Feed System - Electrical Load Management (ELM) System - Software Change This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on airplanes changed in accordance with the original issue or Revision 1 of this service bulletin.

REASON FOR REVISION This revision is sent to add a new airplane configuration to this service bulletin effectivity. Electrical Load Management System (ELMS) Operational Program Configuration (OPC) software 2415-SMI-A03-53 is necessary for Group 54 airplanes WC051-WC067 if Boeing Service Bulletin 777-23-0183 is incorporated.

Terminology has been changed in the Work Instructions to agree with the terminology defined in Paragraph

3.A., General Information - Notes.

These sections were changed:

1. In Paragraph 1.A., Effectivity, Group 54, added Group 54 Configuration 1 and 2 data.

2. In Paragraph 1.B., Concurrent Requirements, changed service bulletin revision data.

3. In Summary, Action and Paragraph 1.D., Description, added Group 54 applicability.

4. In Summary, Background and Paragraph 1.D., Reason, changed text.

5. In Paragraph 1.K., Publications Affected,

a. Changed incorrect Fault Isolation Manual data.

b. Added Illustrated Parts Catalog data.

6. In Paragraph 2.C.2., Parts and Materials Supplied by the Operator, added Group 54 Configurations 1 and 2 applicability.

7. In Paragraph 3.B., Work Instructions,

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a. Step 9, bu., added Group 54 Configuration 1 applicability.

b. Step 9, bv., added Group 54 Configuration 2 applicability.

The data given in Information Notice 777-28A0039 IN02 and 777-28A0039 IN03 are included in this revision.

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 June 13, 2008Original Issue:

January 08, 2009Revision 1:

September 20, 2010Revision 2:

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Commercial Airplanes 777 Service Bulletin SummaryNumber: 777-28A0039Original Issue: June 13, 2008 Revision 2: September 20, 2010 ATA System: 2822 2409 SUBJECT: FUEL - Engine Fuel Feed System - Electrical Load Management (ELM) System - Software Change

CONCURRENT REQUIREMENTS Refer to Paragraph 1.B., Concurrent Requirements.

BACKGROUND This service bulletin installs new Electrical Load Management System (ELMS) software. The software changes help prevent a possible ignition source in the center wing fuel tank caused by a fuel pump that may continue to operate after the fuel level goes below the pump inlet. An ignition source in a fuel tank could result in a fire or an explosion.

A safety assessment conducted by Boeing under Special Federal Aviation Regulation (SFAR) 88 indicated that the center override/jettison pumps may continue to operate for an extended time after the fuel level goes below the pump inlet. When a pump runs after the fuel level goes below the pump inlet, there is a small risk that the pumps can cause an ignition source in the fuel tank from an overheat condition, electrical arcs or frictional sparks.

The ELMS software has these changes to help make sure that the risk of an ignition source in the fuel tank is kept to a minimum:

— The ELMS software sets or clears the "FUEL IN CENTER" and "FUEL LOW CENTER" advisory message bits based on new wet-shutoff logic.

— The low fuel level indication is given by the "FUEL LOW CENTER" message on the Engine Indication and Crew Alerting System based on new wet-shutoff logic. The ELMS software automatically stops each center override/jettison fuel pump at 15 seconds after a low pressure indication from a pump pressure switch, if the pumps are not shut off manually by the flight crew before end of the 15 second period.

— ELMS sets the "FUEL IN CENTER" advisory message bit based on new wet-shutoff logic. The AIMS receives the bit from ELMS. The "FUEL IN CENTER" message is then shown on EICAS to tell the flight crew that the pumps can be put ON.

— ELMS sets the "FUEL PUMP CENTER L" or the "FUEL PUMP CENTER R" status messages when the left or right pump pressure switch indicates high pressure with the pump commanded OFF.

— ELMS monitors and controls the new relays installed by Service Bulletin 777-28A0037 in the center override/jettison fuel pump circuit. ELMS removes power from a center override/jettison pump when the inputs to ELMS show that the pump continues to operate after the pump has been commanded OFF.

ACTION (PRR 61998-2) Install new Operational Program Software (OPS) software in the ELMS electronics units in the P110, P210, and P310 power management panels.

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Group 20:

Boeing Service Bulletin 777-23-0046 is related to this service bulletin.

Group 39:

Boeing Service Bulletin 777-31-0123 is related to this service bulletin.

Group 41:

Boeing Service Bulletin 777-25-0413 is related to this service bulletin.

Group 64:

Boeing Service Bulletin 777-23-0146 is related to this service bulletin.

Group 54, 65:

Boeing Service Bulletin 777-23-0183 is related to this service bulletin.

Group 66:

Boeing Service Bulletin 777-26-0030 is related to this service bulletin.

EFFECTIVITY 777-200, 777-300 Airplanes with ELMS-1. Refer to Service Bulletin Paragraph 1.A.1 for effectivity.

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 this service bulletin be incorporated within 36 months after the original issue date on this service bulletin.

INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

MANPOWER Elapsed HoursTotal Task HoursAirplanes

3.003.00Group 1-69

MATERIAL INFORMATION Operator Supplied Parts/Materials.

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

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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. An equivalent change is on subsequent production airplanes. Refer to PRR61998-2 for data about this change.

DESCRIPTIONCONFIGURATIONGROUP 777-200 airplanes with different configurations-1 777-200 airplanes with different configurations-2 777-200 airplanes with different configurations-3 777-200 airplanes with different configurations-4 777-200 airplanes with different configurations-5 777-200 airplanes with different configurations-6 777-200 airplanes with different configurations-7 777-200 airplanes with different configurations-8 777-200 airplanes with different configurations-9 777-200 airplanes with different configurations-10 777-200 airplanes with different configurations-11

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DESCRIPTIONCONFIGURATIONGROUP 777-200 airplanes with different configurations-12 777-200 airplanes with different configurations-13 777-200 airplanes with different configurations-14 777-200 airplanes with different configurations-15 777-200 airplanes before Increased Maximum Landing Weight (IMLW) change MC0139MK7128 1 777-200 airplanes after IMLW change MC0139MK71282 777-200 airplanes with different configurations-16 777-200 airplanes with different configurations-17 777-200 airplanes with different configurations-18 777-200 airplanes with different configurations-19 777-200 airplanes with different configurations-20 777-200 airplanes that have not incorporated Boeing Service Bulletin 777-23-0046 1 777-200 airplanes that have incorporated Boeing Service Bulletin 777-23-0046 2 777-200 airplanes with different configurations-21 777-200 airplanes with different configurations-22 777-200 airplanes with different configurations-23 777-200 airplanes with different configurations-24 777-200 airplanes with different configurations-25 777-200 airplanes with different configurations-26 777-200 airplanes with different configurations-27 777-200 airplanes with different configurations-28

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DESCRIPTIONCONFIGURATIONGROUP 777-200 airplanes with different configurations-29 777-200 airplanes with a customer defined configuration1 777-200 airplanes with a different customer defined configuration2 777-200 airplanes with different configurations-30 777-200 airplanes with different configurations-31 777-200 airplanes with different configurations-32 777-200 airplanes with different configurations-33 777-200 airplanes with different configurations-34 777-200 airplanes with different configurations-35 777-200 airplanes with different configurations-36 777-200 airplanes with different configurations-37 777-200 airplanes with different configurations-38 777-200 airplanes with different configurations-39 777-200 airplanes that have not incorporated Boeing Service Bulletin 777-31-0123 1 777-200 airplanes that have incorporated Boeing Service Bulletin 777-31-0123 2 777-200 airplanes with different configurations-40 777-200 airplanes with different configurations-41 777-200 airplanes that have not incorporated Boeing Service Bulletin 777-25-0413 1 777-200 airplanes that have incorporated Boeing Service Bulletin 777-25-0413 2 777-200 airplanes with different configurations-42 777-200 airplanes with different configurations-43

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DESCRIPTIONCONFIGURATIONGROUP 777-200 airplanes delivered with ELMS software fly away kit for future crew rest kit incorporation -44 777-200 airplanes with the original Boeing delivery configuration1 777-200 airplanes with the crew rest and ELMS fly away kit software installed by Boeing Supplemental Type Certificate ST01025WI-D 2 777-200 airplanes with different configurations-45 777-200 airplanes with different configurations-46 777-300 airplanes with different configurations-47 777-300 airplanes with different configurations-48 777-300 airplanes with different configurations-49 777-300 airplanes with different configurations-50 777-300 airplanes with different configurations-51 777-300 airplanes with different configurations-52 777-300 airplanes with different configurations-53 777-200 airplanes with different configurations-54 777-200 airplanes that have not incorporated Boeing Service Bulletin 777-23-0183 1 777-200 airplanes that have incorporated Boeing Service Bulletin 777-23-0183 2 777-200 airplanes with different configurations-55 777-200 airplanes with different configurations-56 777-200 airplanes with different configurations-57 777-200 airplanes with different configurations-58 777-200 airplanes that have not incorporated the Door 3 Crew Rest Supplemental Type Certificate (STC) 1 777-200 airplanes that have incorporated the Door 3 Crew Rest STC2

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