### Commercial **Airplanes** 

# 777 Service Bulletin **SPECIAL ATTENTION Number: 777-31-0187**  Original Issue: November 29, 2012 ATA System: 3161 **SUBJECT:** INDICATING/RECORDING SYSTEMS - Primary Display System - Display Unit Replacement and Software Change 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. 9E991 ECCN: 

## BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2012 Boeing. Unpublished Work. All Rights Reserved. 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, DreamlinerTM, 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 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. BOEING is a trademark of Boeing Management Company.

Original Issue: November 29, 2012 777-31-0187 1 of 22 2.0Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 2 of 22 **BOEING SERVICE BULLETIN 777-31-0187**

BLANK PAGE**Table of Contents** Summary...................................................... 5 1. PLANNING INFORMATION ........................................ 9 A. Effectivity................................................ 9 1. Airplanes............................................. 9 2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 B. Concurrent Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 C. Reason. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 H. Weight and Balance Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 I. Electrical Load Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 J. References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2. Data Supplied with this Service Bulletin:. . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3. Installation Drawings Used in the Preparation of this Service Bulletin:. . . . . . . . . . . 17 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 L. Interchangeability and Intermixability of Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 18 M. Software Accomplishment Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2. MATERIAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 C. Parts Necessary for Each Airplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 1. Kits/Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2. Parts and Materials Supplied by the Operator. . . . . . . . . . . . . . . . . . . . . . . . 19 3. Parts Modified and Reidentified. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4. Parts Removed and Not Replaced. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 D. Parts Necessary to Change Spares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 F. Special Tooling Necessary to do this Service Bulletin. . . . . . . . . . . . . . . . . . . . . . . 20 3. ACCOMPLISHMENT INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 B. WORK INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 3 of 22 **BOEING SERVICE BULLETIN 777-31-0187**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 4 of 22 **BOEING SERVICE BULLETIN 777-31-0187**

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### Commercial **Airplanes** 

# 777 Service Bulletin **SPECIAL ATTENTION Summary**  **Number: 777-31-0187** Original Issue: November 29, 2012 ATA System: 3161 **SUBJECT:** INDICATING/RECORDING SYSTEMS - Primary Display System - Display Unit Replacement and Software Change BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. **CONCURRENT REQUIREMENTS** None. **BACKGROUND** This service bulletin gives instructions to replace the existing Phase 3 Display Units (DU)s with new Phase 3A DUs and install new DU database (DB) software. If this change is not done, the DUs will remain susceptible to High Intensity Radiated Field (HIRF) emissions. This could cause loss of data on the screen or cause the screen to flicker which could result in intermittent indications in the flight deck. It was reported that during the Electromagnetic Interference (EMI) certification test procedures of the wireless broadband systems, the existing Phase 3 DUs were susceptible to HIRF emissions at field intensities below the necessary HIRF Qualification Test levels. This problem caused the DU to flicker or the data on the DU screen to go out of view temporarily. The new Phase 3A DU reduces its susceptibility to HIRF emissions and also incorporates a product improvement to increase the video brightness level of the lower grey shades. The new DU DB software allows the usage of the latest Phase 3A DU. Without this software update, operators will not be able to use the Phase 3A DU. Operators are advised to install the new DU DB software because it will work with the latest DU and all previous versions of the DUs. This will help in the situation where an operator uses both old and new DUs. Boeing Service Related Problem (SRP) 777-SRP-31-0048 is related to this service bulletin. More data about this change is in Service Letter 777-SL-31-038. This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
**Reference Affected**  **Planning Data** Paragraph 1.A.2., Spares Affected Yes Spares Affected Paragraph 1.E., Compliance Yes AD Related Paragraph 1.H., Weight and Balance Changes No Weight and Balance Change

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 5 of 22**Reference Affected**  **Planning Data** Paragraph 1.I., Electrical Load Data No Electrical Load Changed Paragraph 1.K., Publications Affected Yes Publications Affected Paragraph 1.K., Publications Affected No Airplane Flight Operations Affected (Flight CrewOperations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/Parts No Kits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator Yes Operator Supplied Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin No Special Tooling Required

**ACTION (PRR 62777-82S)** Work Package 1 - Software Installation: Install the DU DB software into the left and right Airplane Information Management System (AIMS) Core Processor Module/Graphics Generator (CPM/GG). **Group 1-2, Configuration 1; Group 2, Configuration 2:** Work Package 2 - Display Unit Replacement: **Group 1-2, Configuration 1; Group 2, Configuration 2:** In the flight compartment, in the forward instrument panel, replace the existing non-video Phase 3 DUs with new non-video Phase 3A DUs. **Group 1, Configuration 1; Group 2, Configuration 2:** In the flight compartment, in the forward instrument panel, replace the existing video Phase 3 DUs with new video Phase 3A DUs. **EFFECTIVITY** 777-200/200LR/300/300ER, 777F Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s). **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 within 60 months 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 6 of 22 **BOEING SERVICE BULLETIN 777-31-0187 MANPOWER**  Refer to Paragraph 1.G., Manpower. **MATERIAL INFORMATION** Operator Supplied Parts/Materials. Refer to Paragraph 2.A., Material - Price and Availability.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 7 of 22 **BOEING SERVICE BULLETIN 777-31-0187**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 8 of 22 **BOEING SERVICE BULLETIN 777-31-0187**

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### Commercial **Airplanes** 

# 777 Service Bulletin **SPECIAL ATTENTION Number: 777-31-0187**  Original Issue: November 29, 2012 ATA System: 3161 **SUBJECT:** INDICATING/RECORDING SYSTEMS - Primary Display System - Display Unit Replacement and Software Change BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. **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 service bulletin is for the airplane(s) shown below. An equivalent change is on subsequent production airplanes. Refer to PRR 62777-82S for data about this change.
**DESCRIPTION CONFIGURATION**  **GROUP** 777-300 and 777-300ER airplanes.

- 1 Airplanes with the three non-video and three video Phase 3 DUs. 1 Airplanes without the Phase 3 DUs. 2 777-200, 777-200LR and 777F airplanes.

- 2 Airplanes with the six non-video Phase 3 DUs. 1 Airplanes with the three non-video and three video Phase 3 DUs. 2 Airplanes without the Phase 3 DUs. 3

Airplane Models: 777-200, 777-200LR, 777-300, 777-300ER, 777F

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 9 of 22**Group Variable Number**  2 WA001 - WA017 2 WA076 - WA080 2 WA086 - WA093 2 WA101 - WA104 2 WA116 - WA119 2 WA131 - WA137 2 WA171 - WA175 2 WA196 - WA198 2 WA206 - WA212 2 WA221 - WA223 2 WA231 - WA232 2 WA241 - WA250 2 WA261 - WA266 2 WA281 - WA283 2 WA301 - WA304 2 WB001 - WB021 2 WB031 - WB046 2 WB051 - WB088 2 WB101 - WB106 2 WB121 - WB125 2 WB131 - WB148 2 WB151 - WB155 2 WB161 - WB177 2 WB181 - WB194 2 WB201 - WB215 2 WB231 - WB247 2 WB271 - WB273 2 WB276 - WB286 2 WB291 - WB302 2 WB306 - WB307 2 WB311 - WB337 2 WB341 - WB342

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 10 of 22 **BOEING SERVICE BULLETIN 777-31-0187 Group**  **Variable Number** 2 WB366 - WB368 2 WB371 - WB388 2 WB406 2 WB411 - WB413 2 WB416 - WB439 2 WB446 - WB453 2 WB476 2 WB481 - WB484 1 WB501 - WB512 1 WB531 - WB537 1 WB551 - WB554 1 WB591 - WB597 1 WB601 - WB606 1 WB611 - WB622 1 WB631 - WB638 1 WB646 - WB649 2 WC051 - WC073 2 WC101 - WC104 2 WC111 - WC120 2 WC221 - WC224 2 WC241 - WC243 2 WC281 - WC290 2 WC301 - WC308 2 WC361 - WC364 2 WC371 - WC374 2 WC381 - WC395 2 WC441 2 WC446 - WC449 2 WC456 - WC459 2 WC486 - WC493 2 WC506 - WC508 2 WC521 - WC522 2 WC531 - WC536

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 11 of 22 **BOEING SERVICE BULLETIN 777-31-0187 Group**  **Variable Number** 2 WC546 - WC548 2 WC556 2 WC566 - WC567 2 WC571 - WC574 2 WC581 2 WC586 2 WC591 - WC592 2 WD001 - WD002 2 WD011 - WD018 2 WD031 - WD036 2 WD046 - WD055 2 WD066 - WD075 2 WD081 - WD089 2 WD091 2 WD096 2 WD101 - WD105 2 WD111 2 WD116 - WD117 1 WD501 - WD513 1 WD521 - WD541 1 WD546 - WD554 1 WD561 - WD573 1 WD581 - WD599 1 WD606 - WD609 1 WD621 - WD632 1 WD651 - WD665 1 WD671 - WD677 1 WD691 - WD709 1 WD741 - WD752 1 WD761 - WD771 1 WD786 - WD788 1 WD796 - WD819 1 WD826 - WD837

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 12 of 22 **BOEING SERVICE BULLETIN 777-31-0187 Group**  **Variable Number** 1 WD846 - WD867 1 WD871 - WD888 1 WD911 - WD917 1 WD921 - WD923 1 WD936 - WD941 1 WD946 - WD955 1 WD966 - WD970 1 WD981 - WD982 1 WD986 - WD987 1 WD991 1 WD996 1 WE001 - WE004 1 WE011 - WE012 1 WE021 - WE026 1 WE031 - WE034 1 WE051 - WE055 1 WE071 - WE072 1 WE081 - WE084 1 WE091 - WE093 1 WE126 - WE137 1 WE151 - WE159 1 WE176 - WE177 1 WE186 - WE204 1 WE216 - WE217 1 WE226 - WE230 1 WE236 - WE240 1 WE251 - WE253 1 WE261 1 WE271 2 WF001 - WF004 2 WF016 - WF021 2 WF031 - WF035 2 WF046 - WF062

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 13 of 22 **BOEING SERVICE BULLETIN 777-31-0187 Group**  **Variable Number** 2 WF075 - WF077 2 WF081 - WF088 2 WF096 - WF101 2 WF106 - WF109 2 WF111 - WF114 2 WF121 - WF124 2 WF131 2 WF136 - WF137 2 WF146 2 WF151 2. Spares Affected Examine your spares supply for the parts or components identified below. If any parts or components are found, refer to Paragraph 3.B., Work Instructions for the recommended action.
**Part Number** 4091900-931 4091900-933 **B. Concurrent Requirements** None. **C. Reason** This service bulletin gives instructions to replace the existing Phase 3 Display Units (DU)s with new Phase 3A DUs and install new DU database (DB) software. If this change is not done, the DUs will remain susceptible to High Intensity Radiated Field (HIRF) emissions. This could cause loss of data on the screen or cause the screen to flicker which could result in intermittent indications in the flight deck. It was reported that during the Electromagnetic Interference (EMI) certification test procedures of the wireless broadband systems, the existing Phase 3 DUs were susceptible to HIRF emissions at field intensities below the necessary HIRF Qualification Test levels. This problem caused the DU to flicker or the data on the DU screen to go out of view temporarily. The new Phase 3A DU reduces its susceptibility to HIRF emissions and also incorporates a product improvement to increase the video brightness level of the lower grey shades. The new DU DB software allows the usage of the latest Phase 3A DU. Without this software update, operators will not be able to use the Phase 3A DU. Operators are advised to install the new DU DB software because it will work with the latest DU and all previous versions of the DUs. This will help in the situation where an operator uses both old and new DUs.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 14 of 22 **BOEING SERVICE BULLETIN 777-31-0187**Boeing Service Related Problem (SRP) 777-SRP-31-0048 is related to this service bulletin. More data about this change is in Service Letter 777-SL-31-038. **D. Description** Work Package 1 - Software Installation: Install the DU DB software into the left and right Airplane Information Management System (AIMS) Core Processor Module/Graphics Generator (CPM/GG). **Group 1-2, Configuration 1; Group 2, Configuration 2:** Work Package 2 - Display Unit Replacement: **Group 1-2, Configuration 1; Group 2, Configuration 2:** In the flight compartment, in the forward instrument panel, replace the existing non-video Phase 3 DUs with new non-video Phase 3A DUs. **Group 1, Configuration 1; Group 2, Configuration 2:** In the flight compartment, in the forward instrument panel, replace the existing video Phase 3 DUs with new video Phase 3A DUs. The work in this service bulletin is done in the maintenance zone(s) given below. **Group 1:**
**Affected Maintenance Zones Zone**  **Model** 211, 212 777-300, 777-300ER **Group 2:**
**Affected Maintenance Zones Zone**  **Model** 211, 212 777-200, 777-200LR, 777F **E. 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 within 60 months after the original issue date of this service bulletin.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 15 of 22 **BOEING SERVICE BULLETIN 777-31-0187 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** Work Package 1 can be done before or at the same time as Work Package 2, but Work Package 2 cannot be done before Work Package 1. 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. **Work Package 1 - Software Installation Elapsed Hours**  **Task Hours Number of Persons**  **Task** 1.00 1.00 1 Software Installation 1.00 1.00 TOTAL FOR EACH AIRPLANE This estimate gives general service bulletin incorporation time. The specific software data transfer times can be found in 777 AMM 20-15-11. **Group 1-2, Configuration 1; Group 2, Configuration 2: Work Package 2 - Display Unit Replacement**  **Elapsed Hours Task Hours**  **Number of Persons Task**  0.25 0.25 1 Open Access 0.50 0.50 1 Display Unit Replacement 0.50 0.50 1 Close Access 0.40 0.40 1 Test 1.65 1.65 TOTAL FOR EACH AIRPLANE

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 16 of 22 **BOEING SERVICE BULLETIN 777-31-0187**The time to make the change to the DUs in accordance with Honeywell SB 4091900-31-0002 Service Bulletin is not included. **H. Weight and Balance Changes** None. **I. Electrical Load Data** Not changed. **J. References** 1. Existing Data: a. Engineering Change Memo PRR 62777-82S b. Boeing Service Letter 777-SL-31-038 c. Boeing Service Related Problem (SRP) 777-SRP-31-0048 d. Service Bulletin Index D624W001 e. 777 Aircraft Maintenance Manual (AMM) 20-15-11, 31-41-02, 31-61-01, 45-10-00 f. Honeywell Service Bulletin Honeywell SB 4091900-31-0002 **NOTE:** The supplier was told to send copies of the service bulletin to each operator. 2. Data Supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin:
**Title Drawing Number**  Panel Arrangement Forward 233W2101 The table above lists applicable drawings used to prepare this service bulletin. The drawings are not necessary to make the specified changes, and are not supplied with this service bulletin. The drawings may not be applicable to all airplane configurations or operators. **K. Publications Affected** 1. Publications: **Chapter-Section**

**Publication** 31-61 777 Aircraft Maintenance Manual Equipment List 777 Wiring Diagram Manual

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 17 of 22 **BOEING SERVICE BULLETIN 777-31-0187 Chapter-Section**  **Publication** 31-61, 46-00, 46-01 777 Illustrated Parts Catalog 2. Damage Tolerance Based Structural Inspections: 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. **M. Software Accomplishment Summary** 1. System affected by this change: Primary Display System Display Units 2. Software changes which affect operational procedures: None. 3. Other software improvements: – The video brightness table is loaded into the firmware for the DU to address a customer satisfaction issue with the DU video contrast when switching back and forth between the Ground Maneuver Camera System (GMCS) and the Navigation Display (ND) format during ambient lighting conditions. – A voltage value in a data table for the Airplane Information Management System (AIMS) Graphics Generator (GG) is changed to allow the DU to better handle a HIRF situation. More data about this change is in Service Letter 777-SL-31-038.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 18 of 22 **BOEING SERVICE BULLETIN 777-31-0187 2. MATERIAL INFORMATION**  **A. Material - Price and Availability** The operator can supply the parts and materials shown in Paragraph 2.C., Parts Necessary for Each Airplane. As an alternative, operators can purchase the parts from Boeing Spares. This service bulletin does not show the Boeing price and supply data. **B. Industry Support Information** Boeing warranty remedies are not available for the configuration changes given in this service bulletin. **C. Parts Necessary for Each Airplane** 1. Kits/Parts None. 2. Parts and Materials Supplied by the Operator Hardware **Group 1, Configuration 2; Group 2, Configuration 3:** No hardware parts are necessary. **Group 1, Configuration 1; Group 2, Configuration 2:**
**Notes Existing Part Number**  **Name QTY**  **Part Number / Specification**  (a) (b) (c) 4091900-931 Display Unit 3 4091900-941 (a) (b) (c) 4091900-933 Display Unit (Video) 3 4091900-943 (a) This part is used in production. (b) You can get the new part by reworking the existing part in accordance with Honeywell SB 4091900-31- 0002 Service Bulletin. (c) The Display Unit can be obtained directly from the supplier: Honeywell Air Transport Systems (V58960), 21111 North 19th Avenue, Phoenix, Arizona 85027, USA. **Group 2, Configuration 1:**
**Notes Existing Part Number**  **Name QTY**  **Part Number / Specification**  (a) (b) (c) 4091900-931 Display Unit 6 4091900-941 (a) This part is used in production. (b) You can get the new part by reworking the existing part in accordance with Honeywell SB 4091900-31- 0002 Service Bulletin. (c) The Display Unit can be obtained directly from the supplier: Honeywell Air Transport Systems (V58960), 21111 North 19th Avenue, Phoenix, Arizona 85027, USA.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 19 of 22 **BOEING SERVICE BULLETIN 777-31-0187**Software
**Notes Software Name**  **Software Part Number Media Set Name**  **Media Set Part Num- ber**  (a) (b) (c) (d) DU DB 3106-HNP-01W-04 31 DU DB PS4077999-904 (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 CPM/GGs must contain the new software. (d) The media set can be obtained directly from the supplier: Honeywell Air Transport Systems (V58960), 21111 North 19th Avenue, Phoenix, Arizona 85027, USA
3. Parts Modified and Reidentified None. 4. Parts Removed and Not Replaced None. **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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 20 of 22 **BOEING SERVICE BULLETIN 777-31-0187 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. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for definition of the acronyms. 2. Obey all of the warnings and cautions given in the specified manual sections. 3. The work instructions are divided into work packages. Task Hours and Elapsed Hours for each package are given in Paragraph 1.G., Manpower. Work Package 1 can be done before or at the same time as Work Package 2, but Work Package 2 cannot be done before Work Package 1. 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 for on-airplane software installation maintenance practices and data transfer times, as accepted procedures. 6. This service bulletin includes functional test procedures for the systems changed by this service bulletin. More functional tests can possibly be necessary in accordance with standard maintenance practices because of interruption to other airplane systems. **B. WORK INSTRUCTIONS WORK PACKAGE 1 - SOFTWARE INSTALLATION**  1. Install the Display Unit (DU) Database (DB) software shown below into the left and right Airplane Information Management System (AIMS) Core Processor Module/Graphics Generator (CPM/GG). Refer to 777 AMM 31-41-02 as an accepted procedure.
**More Data Media Set Part Number**  **Software Part Number Software Name**  (a) PS4077999-904 3106-HNP-01W-04 DU DB (a) There are four CPM/GGs. There are two CPM/GGs (M10 and M11) in the left AIMS cabinet and two CPM/GGs (M10 and M11) in the right AIMS cabinet. You install software in each CPM/GG. 2. Put the airplane back to a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 21 of 22 **BOEING SERVICE BULLETIN 777-31-0187 Group 1-2, Configuration 1; Group 2, Configuration 2:**  **WORK PACKAGE 2 - DISPLAY UNIT REPLACEMENT**
1. **Group 1-2, Configuration 1; Group 2, Configuration 2:** In the flight compartment, in the forward instrument panel, replace the existing non-video Phase 3 DUs with new non-video Phase 3A DUs. Refer to 777 AMM 31-61-01 as an accepted procedure.
**More Data Existing Part Number**  **New Part Number Part Name**  (a) 4091900-931 4091900-941 Display Unit (a) You can get the new part by reworking the existing part in accordance with Honeywell SB 4091900-31- 0002 Service Bulletin.

2. **Group 1, Configuration 1; Group 2, Configuration 2:** Replace the existing video Phase 3 DUs with new video Phase 3A DUs. Refer to 777 AMM 31-61-01 as an accepted procedure.
**More Data Existing Part Number**  **New Part Number Part Name**  (a) 4091900-933 4091900-943 Display Unit (Video) (a) You can get the new part by reworking the existing part in accordance with Honeywell SB 4091900-31- 0002 Service Bulletin. 3. Do the DU installation test. Refer to 777 AMM 31-61-01 as an accepted procedure. 4. Put the airplane back to a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 777-31-0187 22 of 22 **BOEING SERVICE BULLETIN 777-31-0187**