### Commercial **Airplanes** 

# 777 Service Bulletin **SPECIAL ATTENTION Number: 777-31-0177**  Original Issue: September 23, 2010 ATA System: 3100 **SUBJECT:** INDICATING/RECORDING SYSTEMS - Airplane Information Management System - Aero Engine Data Base Software Upgrade 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. 9E991 ECCN: 

## BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2010 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 1 of 19 3.0BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 2 of 19 **BOEING SERVICE BULLETIN 777-31-0177**

BLANK PAGE**Table of Contents** Summary...................................................... 5 1. PLANNING INFORMATION ........................................ 7 A. Effectivity................................................ 7 1. Airplanes............................................. 7 2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 B. Concurrent Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 C. Reason. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 H. Weight and Balance Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 I. Electrical Load Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 J. References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 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 Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 L. Interchangeability and Intermixability of Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2. MATERIAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 C. Parts Necessary For Each Airplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1. Kits/Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2. Parts and Materials Supplied by the Operator. . . . . . . . . . . . . . . . . . . . . . . . 17 3. Parts Modified and Reidentified. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4. Parts Removed and Not Replaced. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 D. Parts Necessary to Change Spares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 F. Special Tooling Necessary to do this Service Bulletin. . . . . . . . . . . . . . . . . . . . . . . 18 3. ACCOMPLISHMENT INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 B. WORK INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 3 of 19 **BOEING SERVICE BULLETIN 777-31-0177**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 4 of 19 **BOEING SERVICE BULLETIN 777-31-0177**

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### Commercial **Airplanes** 

# 777 Service Bulletin **SPECIAL ATTENTION Summary**  **Number: 777-31-0177** Original Issue: September 23, 2010 ATA System: 3100 **SUBJECT:** INDICATING/RECORDING SYSTEMS - Airplane Information Management System - Aero Engine Data Base Software Upgrade BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. **CONCURRENT REQUIREMENTS** Refer to Paragraph 1.B., Concurrent Requirements. **BACKGROUND** This service bulletin gives instructions to install the Aero-Engine Database (AEDB) software upgrade in the Airplane Information Management System (AIMS) hardware. The revised AEDB is required to be installed on 777 aircraft prior or concurrent with incorporation of the redesigned IP8 bleed screen through Boeing service bulletin 777-75A0002. For airplanes with the Trent 800 engine model, the AEDB software upgrade will limit the takeoff powersetting target so that it stays above the fan flutter lower keep-out zone. For airplanes with other engine types, the AEDB software upgrade will help operators to maintain part number commonality across their 777 fleet. Rolls Royce has identified an area of operation where the Trent 800 engine can be exposed to potential fan flutter with certain combinations of high takeoff thrust derate and additional Assumed Temperature Method (ATM) thrust reduction. A review of in-service data has shown that there have been no takeoffs in the fan flutter sensitive region. However, the installation of the redesigned IP8 bleed exhaust screens through Boeing service bulletin 777-75A0002 may increase the exposure to fan flutter. The intent of this change is to increase the Minimum Power Setting Parameter (min PSP) to prevent displaying a takeoff target Engine Pressure Ratio (EPR) inside the region critical to fan flutter. The min PSP is a constant that resides in the Airplane Flight Manual - Digital Performance Information (AFM-DPI) and the AEDB portion of the Flight Management Computer (FMC). This AEDB update increases the value of the min PSP from 1.100 to 1.170. Prior to the incorporation of Boeing service bulletin 777-75A0002, the revised AEDB provided by this service bulletin may be used with the operating limitations and airplane preformance limits given in either the current Airplane Flight Manual (AFM) or the revised AFM. Boeing Service Related Problem (SRP) 777-SRP-78-0052 is related to this service bulletin. **ACTION (PRR 62777-73S)** Install the AEDB software in the AIMS hardware.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 5 of 19**EFFECTIVITY** 777-200/200LR/300/300ER, 777F Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes. **COMPLIANCE** Boeing recommends that the change given in this service bulletin be done within three years after the original issue date of this service bulletin. **INDUSTRY SUPPORT INFORMATION** Boeing warranty remedies are available for airplanes in warranty as of December 8, 2004. Please refer to Paragraph 2.B., Industry Support Information. **MANPOWER Elapsed Hours**  **Total Task Hours Airplanes**  1.0 1.0 Group 1-3
**MATERIAL INFORMATION** Operator Supplied Parts/Materials. Refer to Paragraph 2.A., Material - Price and Availability

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 6 of 19 **BOEING SERVICE BULLETIN 777-31-0177**

### Commercial **Airplanes** 

# 777 Service Bulletin **SPECIAL ATTENTION Number: 777-31-0177**  Original Issue: September 23, 2010 ATA System: 3100 **SUBJECT:** INDICATING/RECORDING SYSTEMS - Airplane Information Management System - Aero Engine Data Base Software Upgrade BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. **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 PRR 62777-73S for data about this change.
**DESCRIPTION CONFIGURATION**  **GROUP** Airplanes with AIMS-1 hardware and different concurrent requirements. - 1
Airplanes with AIMS-2 hardware and different concurrent requirements. - 2
Airplanes with AIMS-2 hardware and no concurrent requirements.

- 3

Airplane Models: 777-200, 777-200LR, 777-300, 777-300ER, 777F **Group Variable Number**  1 WA001 - WA017 1 WA076 - WA080 1 WA086 - WA093 1 WA101 - WA104

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 7 of 19**Group Variable Number**  1 WA116 - WA119 1 WA131 - WA137 1 WA171 - WA175 1 WA196 - WA198 1 WA206 - WA212 1 WA221 - WA223 1 WA231 - WA232 1 WA241 - WA250 1 WA261 - WA266 1 WA281 2 WA282 - WA283 2 WA301 - WA304 1 WB001 - WB021 1 WB031 - WB046 1 WB051 - WB088 1 WB101 - WB106 1 WB121 - WB125 1 WB131 - WB139 2 WB140 - WB148 1 WB151 - WB155 1 WB161 - WB175 2 WB176 - WB177 1 WB181 - WB192 2 WB193 - WB194 1 WB201 - WB214 2 WB215 1 WB231 - WB247 1 WB271 - WB273 1 WB276 - WB286 1 WB291 - WB302 1 WB306 - WB307 1 WB311 - WB337 1 WB341 - WB342

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 8 of 19 **BOEING SERVICE BULLETIN 777-31-0177 Group**  **Variable Number** 1 WB366 - WB367 2 WB368 1 WB371 - WB388 1 WB406 1 WB411 - WB413 1 WB416 - WB437 2 WB438 - WB439 1 WB446 - WB453 1 WB476 1 WB481 - WB484 1 WB501 - WB507 2 WB508 - WB512 1 WB531 - WB537 1 WB551 - WB554 1 WB591 - WB595 2 WB596 - WB597 1 WB601 - WB606 1 WB611 - WB618 2 WB619 - WB622 1 WB631 - WB638 1 WB646 - WB649 1 WC051 - WC073 1 WC101 - WC104 1 WC111 - WC114 2 WC115 - WC120 2 WC221 - WC222 3 WC223 - WC224 1 WC241 - WC243 1 WC281 - WC286 2 WC287 - WC290 1 WC301 - WC302 2 WC303 - WC308 1 WC361 - WC362

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 9 of 19 **BOEING SERVICE BULLETIN 777-31-0177 Group**  **Variable Number** 2 WC363 - WC364 1 WC371 - WC372 2 WC373 - WC374 2 WC381 - WC395 2 WC441 2 WC446 - WC449 2 WC456 - WC459 2 WC486 - WC493 2 WC506 - WC508 2 WC521 - WC522 2 WC531 - WC536 2 WC546 - WC548 2 WC556 2 WC566 - WC567 2 WC571 3 WC572 - WC574 3 WC581 2 WD001 - WD002 2 WD011 - WD015 3 WD016 - WD018 2 WD031 - WD036 2 WD046 - WD054 3 WD055 2 WD066 - WD067 3 WD068 - WD075 2 WD081 - WD082 3 WD083 - WD088 3 WD091 3 WD096 3 WD101 - WD103 2 WD501 - WD510 3 WD511 - WD513 2 WD521 - WD539

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 10 of 19 **BOEING SERVICE BULLETIN 777-31-0177 Group**  **Variable Number** 3 WD540 - WD541 2 WD546 - WD552 3 WD553 - WD554 2 WD561 - WD573 2 WD581 - WD598 3 WD599 2 WD606 - WD609 2 WD621 - WD632 2 WD651 - WD662 3 WD663 - WD665 2 WD671 - WD675 3 WD676 2 WD691 - WD709 2 WD741 - WD751 3 WD752 2 WD761 - WD770 3 WD771 2 WD786 - WD788 2 WD796 - WD805 3 WD806 - WD813 2 WD826 - WD830 3 WD831 - WD837 2 WD846 - WD852 3 WD853 - WD861 2 WD871 - WD875 3 WD876 - WD883 2 WD911 - WD912 3 WD913 - WD915 3 WD921 - WD922 2 WD936 - WD939 3 WD946 - WD951 2 WD966 - WD968 3 WD969 - WD970

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 11 of 19 **BOEING SERVICE BULLETIN 777-31-0177 Group**  **Variable Number** 3 WD981 - WD982 3 WD986 - WD987 3 WD996 3 WE001 - WE004 3 WE011 - WE012 3 WE021 - WE025 3 WE031 3 WE051 - WE052 3 WE071 3 WE081 - WE082 3 WE126 - WE133 3 WF001 - WF004 3 WF016 - WF020 3 WF031 - WF032 3 WF046 - WF054 3 WF076 - WF077 3 WF081 - WF088 3 WF096 - WF099 3 WF106 - WF107 3 WF111 - WF112 3 WF121 2. Spares Affected None. **B. Concurrent Requirements** The service bulletin(s) listed below which install AIMS Blockpoint V14, or installation of a later AIMS Blockpoint must be done before or at the same time as this service bulletin: **Group 1: Description**  **Service Bulletin Company**  Installs the AIMS-1 Blockpoint V14 software. 777-31A0179 Original Issue Boeing

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 12 of 19 **BOEING SERVICE BULLETIN 777-31-0177 Group 2:**  **Description Service Bulletin**  **Company** Installs the AIMS-2 Blockpoint V14 software. 777-31A0150 Original Issue or Revision 1 Boeing **Group 3:** None. **C. Reason** This service bulletin gives instructions to install the Aero-Engine Database (AEDB) software upgrade in the Airplane Information Management System (AIMS) hardware. The revised AEDB is required to be installed on 777 aircraft prior or concurrent with incorporation of the redesigned IP8 bleed screen through Boeing service bulletin 777-75A0002. For airplanes with the Trent 800 engine model, the AEDB software upgrade will limit the takeoff powersetting target so that it stays above the fan flutter lower keep-out zone. For airplanes with other engine types, the AEDB software upgrade will help operators to maintain part number commonality across their 777 fleet. Rolls Royce has identified an area of operation where the Trent 800 engine can be exposed to potential fan flutter with certain combinations of high takeoff thrust derate and additional Assumed Temperature Method (ATM) thrust reduction. A review of in-service data has shown that there have been no takeoffs in the fan flutter sensitive region. However, the installation of the redesigned IP8 bleed exhaust screens through Boeing service bulletin 777-75A0002 may increase the exposure to fan flutter. The intent of this change is to increase the Minimum Power Setting Parameter (min PSP) to prevent displaying a takeoff target Engine Pressure Ratio (EPR) inside the region critical to fan flutter. The min PSP is a constant that resides in the Airplane Flight Manual - Digital Performance Information (AFM-DPI) and the AEDB portion of the Flight Management Computer (FMC). This AEDB update increases the value of the min PSP from 1.100 to 1.170. Prior to the incorporation of Boeing service bulletin 777-75A0002, the revised AEDB provided by this service bulletin may be used with the operating limitations and airplane preformance limits given in either the current Airplane Flight Manual (AFM) or the revised AFM. Boeing Service Related Problem (SRP) 777-SRP-78-0052 is related to this service bulletin. **D. Description** Install the AEDB software in the AIMS hardware. The work in this service bulletin is done in the maintenance zone(s) given below. **Group 1:**
**Affected Maintenance Zones Zone**  **Model** 212 777-200, 777-300

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 13 of 19 **BOEING SERVICE BULLETIN 777-31-0177 Group 2:** 
**Affected Maintenance Zones Zone**  **Model** 212 777-200, 777-200LR, 777-300, 777-300ER **Group 3:**
**Affected Maintenance Zones Zone**  **Model** 212 777-200, 777-200LR, 777- 300ER, 777F **E. Compliance** Boeing recommends that the change given in this service bulletin be done within three years after the original issue date of this service bulletin. **F. Approval** This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes. If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin. **G. Manpower** The table below shows an estimate of the task hours necessary to do this change for each airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator task hour data if necessary. The estimate does not include lost time. These are some examples of lost time: • Time to adjust to the workplace • Time to schedule the work • Time to inspect the work • Time to cure the materials • Time to make the parts • Time to find the tools. **Elapsed Hours Task Hours**  **Number of Persons Task**  0.25 0.25 1 Open Access

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 14 of 19 **BOEING SERVICE BULLETIN 777-31-0177 Elapsed Hours**  **Task Hours Number of Persons**  **Task** 0.50 0.50 1 Install Software 0.25 0.25 1 Close Access 1.00 1.00 TOTAL FOR EACH AIRPLANE
**NOTE:** This estimate gives general service bulletin incorporation time. The specific software data transfer times can be found in 777 AMM 20-15-11. This estimate does not include the task hour data given in the service bulletins in Paragraph 1.B., Concurrent Requirements. **H. Weight and Balance Changes** None. **I. Electrical Load Data** Not changed. **J. References** 1. Existing Data a. Engineering Change Memo PRR 62777-73S b. Boeing Service Bulletin 777-31-0167, 777-31-0183, 777-31A0150, 777-31A0179, 777-75A0002 c. Boeing Service Related Problem (SRP) 777-SRP-78-0052 d. 777 Aircraft Maintenance Manual (AMM) 20-15-11, 31-41-01, 31-41-02, 31-41-03, 31-41-04, 31-41-05 2. Data supplied with this Service Bulletin None. 3. Installation Drawings Used in the Preparation of this Service Bulletin None. **K. Publications Affected** 1. Publications: **Chapter-Section**

**Publication** 46-01 777 Illustrated Parts Catalog 2. Damage Tolerance Based Structural Inspections:

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 15 of 19 **BOEING SERVICE BULLETIN 777-31-0177**Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary. **L. Interchangeability and Intermixability of Parts** Refer to Paragraph 2.C., Parts Necessary for Each Airplane, for interchangeability and intermixability information.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 16 of 19 **BOEING SERVICE BULLETIN 777-31-0177 2. MATERIAL INFORMATION**  **A. Material - Price and Availability** The operator can supply the software shown in Paragraph 2.C., Parts Necessary for Each Airplane. As an alternative, operators can purchase the software from Boeing Spares. This service bulletin does not show the Boeing price and supply data. The software is subject to the terms and conditions of the Boeing standard purchase order acknowledgment. Prices are in United States dollars. Terms: Net 30 days. Reference this service bulletin and submit your purchase order by one of these methods: 1. Order on-line via ATA Spec 2000 or The Boeing Part Page 2. Fax to (206) 662-7145 **B. Industry Support Information** Boeing warranty remedies are available for 777 airplanes in warranty as of December 8, 2004. For task hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing Commercial Airplanes Group - Warranties. The parts for airplanes in warranty as of that date will be supplied at no charge. Send a purchase order for the parts to Boeing Spares. Please refer to this service bulletin number and reference the airplane variable numbers in your purchase order. **C. Parts Necessary For Each Airplane** 1. Kits/Parts None. 2. Parts and Materials Supplied by the Operator
**Notes Software Name**  **Software Part Number Media Set Name**  **Media Set Part Num- ber**  (a) (b) (c) 31 AERO-ENGINE DATABASE 3110-BCG-00R-06 31 AERO-ENGINE DATABASE 243W0033-7 (a) This software part number is used in production. Operators may already have this media set. (b) Do not install previous versions of this software after installation of the new software part number. (c) Do not mix different part numbers of this software on the airplane. All AIMS must contain the new software.
3. Parts Modified and Reidentified None. 4. Parts Removed and Not Replaced None.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 17 of 19 **BOEING SERVICE BULLETIN 777-31-0177 D. Parts Necessary to Change Spares**  None. **E. Special Tooling - Price and Availability** None. **F. Special Tooling Necessary to do this Service Bulletin** No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance and overhaul tools in the manuals given in Paragraph 1.J., References, can be necessary. Examine operator tool supply to make sure all necessary tools are available.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 18 of 19 **BOEING SERVICE BULLETIN 777-31-0177 3. ACCOMPLISHMENT INSTRUCTIONS**  **A. GENERAL INFORMATION CAUTION:**  KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL, METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR OTHER ELECTRICAL DAMAGE. **NOTE:** 1. The instructions identified in Paragraph 3.B., Work Instructions, and the Figure(s) give the recommended sequence of steps. The sequence of steps to do this service bulletin can be changed. 2. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for definition of the acronyms. 3. Obey all of the warnings and cautions given in the specified manual sections. 4. These work instructions refer to procedures included in other Boeing documents. When the words "refer to" are used and the operator has an accepted alternative procedure, the accepted alternative procedure can be used. When the words "in accordance with" are included in the instruction, the procedure in the Boeing document must be used. 5. Refer to 777 AMM 20-15-11 as an accepted procedure for on-airplane software installation maintenance practices and data transfer times. **B. WORK INSTRUCTIONS**
1. **Group 1:** Install the software shown below. Refer to 777 AMM 31-41-01, 777 AMM 31-41-02, 777 AMM 31-41-03 and 777 AMM 31-41-04 as accepted procedures.
**More Data Media Set Part Number**  **Software Part Number Software Name**  243W0033-7 3110-BCG-00R-06 31 AERO-ENGINE DATABASE

2. **Group 2-3:** Install the software shown below. Refer to 777 AMM 31-41-02, 777 AMM 31-41-04 and 777 AMM 31-41-05 as accepted procedures.
**More Data Media Set Part Number**  **Software Part Number Software Name**  243W0033-7 3110-BCG-00R-06 31 AERO-ENGINE DATABASE 3. Put the airplane back to a serviceable condition.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 23, 2010 777-31-0177 19 of 19 **BOEING SERVICE BULLETIN 777-31-0177**