### Commercial **Airplanes** 

# 777 Service Bulletin
**Number: 777-24-0077** Original Issue: August 21, 2003 Revision 4: October 17, 2012 ATA System: 2400 **SUBJECT:** ELECTRICAL POWER - General - Install the Passenger Compartment Electrical Power Isolation Switches 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 © 2003 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 Unpublished Work.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: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 1 of 51 2.0Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 2 of 51 **BOEING SERVICE BULLETIN 777-24-0077**

BLANK PAGE**Table of Contents** Revision Transmittal Sheet............................................ 5 Summary...................................................... 7 1. PLANNING INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 A. Effectivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1. Airplanes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2. Spares Affected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 B. Concurrent Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 C. Reason. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 D. Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 F. Approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 G. Manpower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 H. Weight and Balance Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 I. Electrical Load Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 J. References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 1. Existing Data:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2. Data Supplied with this Service Bulletin:. . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3. Installation Drawings Used in the Preparation of this Service Bulletin:. . . . . . . . . . . 20 K. Publications Affected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 L. Interchangeability and Intermixability of Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 20 M. Software Accomplishment Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2. MATERIAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 B. Industry Support Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 C. Parts Necessary for Each Airplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 1. Kits/Parts:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2. Parts and Materials Supplied by the Operator:. . . . . . . . . . . . . . . . . . . . . . . . 23 3. Parts Modified and Reidentified:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4. Parts Removed and Not Replaced:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 D. Parts Necessary to Change Spares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 F. Special Tooling Necessary to do this Service Bulletin. . . . . . . . . . . . . . . . . . . . . . . 25 3. ACCOMPLISHMENT INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 A. GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 B. WORK INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 FIGURE 1: CHANGE THE AIRPLANE WIRING - GROUP 1 [Group 1, Configuration 1]. . . . . . . . 40 FIGURE 2: FLIGHT DECK - AIRPLANE WIRE ROUTING [Group 1, Configuration 1]. . . . . . . . . 44 FIGURE 3: MAIN EQUIPMENT CENTER - AIRPLANE WIRE ROUTING [Group 1, Configuration 1] . 46

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 3 of 51 **BOEING SERVICE BULLETIN 777-24-0077**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 4 of 51 **BOEING SERVICE BULLETIN 777-24-0077**

BLANK PAGE

### Commercial **Airplanes** 

# 777 Service Bulletin **Revision Transmittal Sheet Number: 777-24-0077**  Original Issue: August 21, 2003 Revision 4: October 17, 2012 ATA System: 2400 **SUBJECT:** ELECTRICAL POWER - General - Install the Passenger Compartment Electrical Power Isolation Switches This revision includes all pages of the service bulletin. **COMPLIANCE INFORMATION RELATED TO THIS REVISION** No more work is necessary on the airplanes changed in accordance with Revision 3 of this service bulletin. **REASON FOR REVISION** This revision is sent to tell operators that GE Aviation Service Bulletin 4000ELM-24-435 has been revised, and to give data to change an Electrical Power Control Panel, part number 233W3202-9 to the new part number 233W3202-18. These sections were changed: 1. In Paragraph 1.B., Concurrent Requirements, changed the GE Aviation service bulletin data. 2. In Summary, Background, Summary Manpower, Paragraph 1.C., Reason, Paragraph 1.G., Manpower and Paragraph 1.J.1., Existing Data, added BAE Systems SB 233W3202-24-03 reference. 3. In Paragraph 1.K., Publications Affected, changed the publications data. 4. In Paragraph 2.C.2., Parts and Materials Supplied by the Operator: a. Added an Electrical Power Control Panel part number. b. Added a note. 5. In Paragraph 2.C.3., Parts Modified and Reidentified, added a table. 6. In Paragraph 3.B., Work Instructions: a. Step 3, added a note. b. Step 5, changed the GE Aviation service bulletin data. 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 5 of 51**REVISION HISTORY** August 21, 2003 Original Issue: May 24, 2007 Revision 1: December 17, 2009 Revision 2: December 06, 2011 Revision 3: October 17, 2012 Revision 4:

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 6 of 51 **BOEING SERVICE BULLETIN 777-24-0077**

### Commercial **Airplanes** 

# 777 Service Bulletin **Summary Number: 777-24-0077**  Original Issue: August 21, 2003 Revision 4: October 17, 2012 ATA System: 2400 **SUBJECT:** ELECTRICAL POWER - General - Install the Passenger Compartment Electrical Power Isolation Switches **CONCURRENT REQUIREMENTS** Refer to Paragraph 1.B., Concurrent Requirements. **BACKGROUND** The change described in this service bulletin will provide new switches on the flight deck that can remove power from the cabin systems if smoke or flames occur. We have received numerous reports of smoke or flames in the passenger cabin related to the wiring for the passenger cabin in-flight entertainment system, cabin lighting and passenger seats. It is not easy to remove the electrical power to these systems to stop the smoke or flames. Two switches can be installed to remove power from some of the passenger cabin electrical systems. When selected OFF, the IFE/PASS SEATS switch will remove power from all the components of the IFE (in-flight entertainment) system and the passenger seats (seat motor power, personal computer power outlets and telephones). When selected OFF, the CABIN/UTILITY switch will remove power from all the galleys, the ground service bus (except the main and APU battery chargers and left forward fuel pump), the utility busses, the gasper air fan, the fluorescent cabin lighting and the beacon, wing and logo lights. While the switch is off, the night lights, the supplemental night lights, the reading lights, the attendant work lights and some of the galley and crew rest lights will be turned on. Boeing Service Related Problem (SRP) 777-SRP-24-0091 is related to this service bulletin. BAE Systems SB 233W3202-24-03 Original Issue and BAE Systems SB 233W3202-24-04 Revision 2 are related to this service bulletin. **ACTION (PRR 61887) Group 1, Configuration 1:**  On the P5 panel, replace the electrical power control panel. Install eight new wires and remove two wires between the P5 panel and the P61 overhead panel. Install 13 new wires between the P110 panel and the P210 panel. Remove one wire between the P210 panel and the P101 panel. Install four new wires between the P210 panel and the P320 panel. Make the changes to the P110, P210 and P320 panels in accordance with the Smiths/GE Aviation service bulletins. Do a test of the passenger cabin systems, including the IFE/PASS SEATS switch. Do a test of the CABIN UTILITY switch.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 7 of 51**Group 1, Configuration 2:** More work is necessary. In the flight compartment, get access to the electrical power control panel. Do an inspection on the electrical power control panel for the part number. If the electrical power control panel has the part number 233W3202-18, and does have lockwire provisions on the switch guards at switches S6 and S10, then change the part number to 233W3202-19. If the electrical power control panel has the part number 233W3202-19, and does not have lockwire provisions on the switch guards at switches S6 and S10, then change the part number to 233W3202-18. **EFFECTIVITY** 777-200 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 (AD) 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 60 months after the Revision 1 date of this service bulletin. **INDUSTRY SUPPORT INFORMATION** Boeing warranty remedies are not available for the configuration changes given in this service bulletin. **MANPOWER Group 1, Configuration 1:**  **Elapsed Hours Total Task Hours**  **Airplanes** 13.50 27.00 777-200 **Group 1, Configuration 1:** The time to make the change to the P110, P210 and P320 panels in accordance with the Smiths/GE Aviation Service Bulletins is not included. **Group 1, Configuration 1:** This estimate does not include the task hour data given in the Boeing service bulletins in Paragraph 1.B., Concurrent Requirements. **Group 1, Configuration 1:** The time to make the change to the electrical power control panel in accordance with the BAE Systems SB 233W3202-24-03 Original Issue and/or BAE Systems SB 233W3202-24-04 Revision 2 is not included. **Group 1, Configuration 2: Elapsed Hours**  **Total Task Hours Airplanes**  1.00 1.00 More Work

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 8 of 51 **BOEING SERVICE BULLETIN 777-24-0077 MATERIAL INFORMATION**  Boeing Supplied Kits/Parts. 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: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 9 of 51 **BOEING SERVICE BULLETIN 777-24-0077**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 10 of 51 **BOEING SERVICE BULLETIN 777-24-0077**

### Commercial **Airplanes** 

# 777 Service Bulletin
**Number: 777-24-0077** Original Issue: August 21, 2003 Revision 4: October 17, 2012 ATA System: 2400 **SUBJECT:** ELECTRICAL POWER - General - Install the Passenger Compartment Electrical Power Isolation Switches
**1. PLANNING INFORMATION A. Effectivity**  1. Airplanes Refer to Service Bulletin Index Document D6-24W001 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 61887 for data about this change.
**DESCRIPTION CONFIGURATION**  **GROUP** 777-200 Airplanes with classic core IFE interface.

- 1 777-200 Airplanes that have not accomplished BAE Systems Service Bulletin 233W3202-24-04 Original Issue or Revision 1. 1
777-200 Airplanes that have accomplished BAE Systems Service Bulletin 233W3202-24-04 Original Issue or Revision 1. 2

Airplane Models:
777-200 **Group Variable Number**  1 WA002 - WA017 1 WA076 - WA080 1 WA086 - WA093 1 WA116 - WA119 1 WA131 - WA137 1 WA171 - WA175

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 11 of 51**Group Variable Number**  1 WA196 - WA198 1 WA206 - WA209 1 WA261 - WA266 1 WB001 - WB015 1 WB051 - WB082 1 WB101 - WB104 1 WB121 - WB125 1 WB131 - WB132 2. Spares Affected Examine your spares supply for the parts or components identified in Paragraph 2.C., Parts Necessary for Each Airplane. If any parts or components are found, refer to Paragraph 2.C. for the recommended use. **B. Concurrent Requirements Group 1, Configuration 1:**  The service bulletins listed below must be done before or at the same time as this service bulletin: **Group 1, Configuration 1: Description**  **Service Bulletin Company**  Installs new OPS in the Cabin Area Control Panel (CACP) to change the operation of the cabin lighting system when the CABIN/UTILITY switch is installed. 777-23-0176 Original Issue thru Revision 2. Boeing

Changes the ELMS OPS and OPC software to decrease the number of ELMS P110 Panel, ELMS P210 Panel and ELMS P310 Panel EICAS status messages. (a) 777-24-0087 Original Issue thru Revision 2. Boeing

(a) The changes in accordance with Boeing Service Bulletin 777-24-0087 can only be done at the same time as the changes in accordance with this service bulletin.

**Group 1, Configuration 1:** The Smiths/GE Aviation Service Bulletins listed below must be done to complete the changes in accordance with this service bulletin. **Group 1, Configuration 1: Description**  **(Power Panel) Service Bulletin**  **Company**

P320 4000ELM-24-435 Revision 8, Dated March 26, 2012 GE Aviation

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 12 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Group 1, Configuration 1:**  **Description (Power Panel)**  **Service Bulletin Company** 

P320 4000ELM-24-556 Revision 1, Dated December 21, 2009 GE Aviation P320 4000ELM-24-619 Original Issue, Dated May 9, 2003 Smiths P320 4000ELM-24-625 Original Issue, Dated May 9, 2003 Smiths P110 5000ELM-24-450 Original Issue, Dated April 11, 2003 Smiths P110 5000ELM-24-454 Original Issue, Dated April 11, 2003 Smiths P110 5000ELM-24-554 Original Issue, Dated April 15, 2003 Smiths P110 5000ELM-24-559 Revision 2, Dated August 12, 2005 Smiths P110 5000ELM-24-560 Revision 2, Dated April 10, 2006 GE Aviation P110 5000ELM-24-562 Revision 1, Dated March 3, 2005 Smiths P110 5000ELM-24-565 Revision 2, Dated December 14, 2009 GE Aviation P110 5000ELM-24-617 Original Issue, Dated May 9, 2003 Smiths P110 5000ELM-24-451 Original Issue, Dated April 22, 2003 GE Aviation P110 5000ELM-24-514 Revision 2, Dated December 12, 2005 GE Aviation P110 5200ELM-24-566 Original Issue, Dated April 24, 2003 Smiths P210 6000ELM-24-461 Revision 1, Dated June 12, 2006 GE Aviation P210 6000ELM-24-555 Original Issue, Dated April 15, 2003 Smiths P210 6000ELM-24-571 Revision 6, Dated December 14, 2009 GE Aviation P210 6000ELM-24-572 Revision 3, Dated July 03, 2008 GE Aviation P210 6000ELM-24-573 Revision 1, Dated December 12, 2005 GE Aviation P210 6000ELM-24-575 Original Issue, Dated April 29, 2003 Smiths P210 6000ELM-24-588 Revision 1, Dated June 12, 2006 GE Aviation P210 6000ELM-24-590 Original Issue, Dated April 16, 2003 Smiths P210 6000ELM-24-597 Revision 1, Dated December 14, 2009 GE Aviation P210 6000ELM-24-601 Original Issue, Dated May 1, 2003 Smiths P210 6000ELM-24-604 Revision 1, Dated June 14, 2005 Smiths P210 6000ELM-24-614 Revision 1, Dated November 9, 2009 GE Aviation P210 6000ELM-24-618 Original Issue, Dated May 9, 2003 Smiths P210 6000ELM-24-624 Revision 5, Dated December 14, 2009 GE Aviation P210 6053ELM1-24-613 Original Issue, Dated July 8, 2003 Smiths P210 6060ELM1-24-587 Revision 1, Dated May 24, 2010 GE Aviation P210 6064ELM1-24-576 Original Issue, Dated May 6, 2003 Smiths

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 13 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Group 1, Configuration 1:**  **Description (Power Panel)**  **Service Bulletin Company** 

P210 6064ELM1-24-603 Original Issue, Dated May 1, 2003 Smiths P210 6087ELM1-24-615 Original Issue, Dated July 8, 2003 Smiths P210 6000ELM-24-440 Revision 1, Dated December 21, 2005 GE Aviation P210 6000ELM-24-456 Revision 1, Dated February 17, 2005 Smiths P210 6000ELM-24-457 Original Issue, Dated April 11, 2003 Smiths P210 6000ELM-24-460 Revision 3, Dated December 2, 2009 GE Aviation P210 6000ELM-24-545 Revision 3, Dated December 22, 2005 GE Aviation P210 6200ELM-24-581 Revision 1, Dated March 5, 2010 GE Aviation P210 6200ELM-24-616 Revision 1, Dated March 5, 2010 GE Aviation P210 6205ELM6-24-605 Original Issue, Dated May 2, 2003 Smiths P210 6087ELM1-24-703 Original Issue, Dated January 26, 2009 GE Aviation

The Smiths/GE Aviation service bulletins listed below are for reference and give the specific service bulletins applicable for each airplane. **Group 1, Configuration 1:**
**Notes Revision and Date**  **Smiths/GE Aviation Service Bulletins**  Reference Only Revision 2, Dated January 20, 2006 ELMS-24-ANA Reference Only Revision 1, Dated February 19, 2004 ELMS-24-BAB Reference Only Revision 1, Dated January 16, 2004 ELMS-24-EAD Reference Only Revision 1, Dated March 1, 2004 ELMS-24-GUN Reference Only Revision 1, Dated March 1, 2004 ELMS-24-JAL Reference Only Revision 3, Dated May 23, 2004 ELMS-24-JAS Reference Only Revision 3, Dated December 14, 2009 ELMS-24-KAL Reference Only Revision 1, Dated March 1, 2004 ELMS-24-TII Reference Only Revision 2, Dated February 16, 2009 ELMS-24-UAL **Group 1, Configuration 2:** None. **C. Reason** The change described in this service bulletin will provide new switches on the flight deck that can remove power from the cabin systems if smoke or flames occur.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 14 of 51 **BOEING SERVICE BULLETIN 777-24-0077**We have received numerous reports of smoke or flames in the passenger cabin related to the wiring for the passenger cabin in-flight entertainment system, cabin lighting and passenger seats. It is not easy to remove the electrical power to these systems to stop the smoke or flames. Two switches can be installed to remove power from some of the passenger cabin electrical systems. When selected OFF, the IFE/PASS SEATS switch will remove power from all the components of the IFE (in-flight entertainment) system and the passenger seats (seat motor power, personal computer power outlets and telephones). When selected OFF, the CABIN/UTILITY switch will remove power from all the galleys, the ground service bus (except the main and APU battery chargers and left forward fuel pump), the utility busses, the gasper air fan, the fluorescent cabin lighting and the beacon, wing and logo lights. While the switch is off, the night lights, the supplemental night lights, the reading lights, the attendant work lights and some of the galley and crew rest lights will be turned on. Boeing Service Related Problem (SRP) 777-SRP-24-0091 is related to this service bulletin. BAE Systems SB 233W3202-24-03 Original Issue and BAE Systems SB 233W3202-24-04 Revision 2 are related to this service bulletin. Revision 1 was sent to add three new wires to the wire changes in Figure 1. Reference to 6000ELM1-24-461 were revised to 6000ELM-24-461 due to typographical error. References to Smiths service bulletin 6000ELM-24-459, 6000ELM-24-567, 5600ELM-24-558, 5000ELM-24-477, and 5000ELM-24-564 were removed because they are not applicable to airplanes with classic core IFE. Revision 2 was sent to include reference to GE Aviation Service Bulletin 6087ELM1-24-703 in the service bulletin. GE Aviation Service Bulletin 6087ELM1-24-703 gives instructions to change the wiring in the Electrical Load Management System (ELMS) P210 panel for airplanes WA261-WA266. Also, GE Aviation Service Bulletin ELMS-24-UAL which gives airplane applicability data, has been revised to add reference to GE Aviation Service Bulletin 6087ELM1-24-703. Revision 3 was sent to tell operators that the wire kit 280W5110-101 included in the top kit 005W3206-1 contains a wire 280W5110-101W of incorrect length. A new supplemental kit 280W5110-105W is added to this service bulletin which contains an equivalent wire with the correct length. Also, this revision is sent to tell operators that BAE Systems Service Bulletin 233W3202-24-04, and some GE Aviation service bulletins have been revised. The data given in Information Notice 777-24-0077 IN01 and 777-24-0077 IN02 is included in this revision. Revision 4 is sent to tell operators that GE Aviation Service Bulletin 4000ELM-24-435 has been revised, and to give data to change an Electrical Power Control Panel, part number 233W3202-9 to the new part number 233W3202-18. **D. Description Group 1, Configuration 1:**  On the P5 panel, replace the electrical power control panel. Install eight new wires and remove two wires between the P5 panel and the P61 overhead panel. Install 13 new wires between the P110 panel and the P210 panel. Remove one wire between the P210 panel and the P101 panel. Install four new wires between the P210 panel and the P320 panel. Make the changes to the P110, P210 and P320 panels in accordance with the Smiths/GE Aviation service bulletins. Do a test of the passenger cabin systems, including the IFE/PASS SEATS switch. Do a test of the CABIN UTILITY switch.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 15 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Group 1, Configuration 2:**  More work is necessary. In the flight compartment, get access to the electrical power control panel. Do an inspection on the electrical power control panel for the part number. If the electrical power control panel has the part number 233W3202-18, and does have lockwire provisions on the switch guards at switches S6 and S10, then change the part number to 233W3202-19. If the electrical power control panel has the part number 233W3202-19, and does not have lockwire provisions on the switch guards at switches S6 and S10, then change the part number to 233W3202-18. Revision 1 - More work may be necessary on airplanes changed as shown in the Original Issue of this service bulletin. Operators can install the three new wires W6220-0071-20, W6220-072-20 and W6220-073-20 as shown in Figure 1. Revision 2 - More work is necessary on airplanes WA261-WA266 changed in accordance with the Original Issue or Revision 1 of this service bulletin. For airplanes WA261-WA266 do GE Aviation Service Bulletin 6087ELM1-24-703 Original Issue to change the wiring in the ELMS P210 panel. Revision 3 - More work is necessary on the airplanes changed in accordance with BAE Systems Service Bulletin 233W3202-24-04 Original Issue or Revision 1. The electrical power control panels 233W3202-12 and 233W3202-13 were incorrectly identified. The correct part number for the changed 233W3202-12 panel is 233W3202-18, and for the changed 233W3202-13 panel is 233W3202-19. Revision 3 - More work is necessary on the airplanes changed in accordance with GE Aviation Service Bulletin 6000ELM-24-614 Original Issue or GE Aviation SB 6200ELM-24-616 Original Issue. Do GE Aviation SB 6000ELM-24-614 Revision 1 or GE Aviation SB 6200ELM-24-616 Revision 1 to put back the P210 power panel to the correct standard. Revision 4 - No more work is necessary on the airplanes changed in accordance with Revision 3 of this service bulletin. The work in this service bulletin is done in the maintenance zone(s) given below.
**Affected Maintenance Zones Zone**  **Model** 117, 118 777-200 **E. Compliance** The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive (AD) 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 60 months after the Revision 1 date of this service bulletin.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 16 of 51 **BOEING SERVICE BULLETIN 777-24-0077 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 examine the work — Time to cure the materials — Time to make the parts — Time to find the tools

**Group 1, Configuration 1: Elapsed Hours**  **Task-Hours Number of Persons**  **Task** 0.75 1.5 2 Open Access 8.00 16.0 2 Change 0.75 1.5 2 Close Access 4.00 8.0 2 Test 13.50 27.00 TOTAL FOR EACH AIRPLANE **Group 1, Configuration 1:** The time to make the change to the P110, P210 and P320 panels in accordance with the Smiths/GE Aviation Service Bulletins is not included. **Group 1, Configuration 1:** This estimate does not include the task hour data given in the Boeing service bulletins in Paragraph 1.B., Concurrent Requirements. **Group 1, Configuration 1:** The time to make the change to the electrical power control panel in accordance with the BAE Systems SB 233W3202-24-03 Original Issue and/or BAE Systems SB 233W3202-24-04 Revision 2 is not included.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 17 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Group 1, Configuration 2:**  **Elapsed Hours Task-Hours**  **Number of Persons Task**  0.25 0.25 1 Open Access 0.25 0.25 1 Inspect 0.25 0.25 1 Change 0.25 0.25 1 Close Access 1.00 1.00 TOTAL FOR EACH AIRPLANE **H. Weight and Balance Changes Group 1, Configuration 1:**  **Change in Moment (Pound-Inches)**  **Change in Weight (Pounds)**  **Airplane**

+951.6 +2.6 777-200 **Group 1, Configuration 2:** None. **I. Electrical Load Data Group 1, Configuration 1:**  The electrical loads for these circuit breakers do not change. These circuit breakers change electrical busses as shown in the last two columns of the following table. The actual electrical loads for these circuit breakers can be found in the current copy of the electrical load analysis for the airplane. Some airplanes will not have all of these circuit breakers. Change the electrical buss data only for the circuit breakers installed on the airplane. **Group 1, Configuration 1:**
**Post S/B Bus Location Pre S/B Bus Location**  **Nomenclature Circuit Breaker**  L MAIN AC Sec 2, Phase A L MAIN AC Sec 1, Phase A Landscape Camera C23423 L MAIN AC Sec 2, Phase A L MAIN AC Sec 1, Phase A CTU C23430 L MAIN AC Sec 2, Phase A L MAIN AC Sec 1, Phase B UHF R C23432 L MAIN AC Sec 2, Phase A L MAIN AC Sec 1, Phase C UHF L C23434 R Utility, Phase B R Utility, Phase C M1/M2 Galley Handsets C23450 L MAIN AC Sec 2, Phase A L MAIN AC Sec 1, Phase A Cabin File Server C23454 R Utility, Phase B R Utility, Phase C Fax Machine C23455 R Utility, Phase B R Utility, Phase A Cabin Unit/Holster C23460 R Utility, Phase B R Utility, Phase A Phones F/C C23468 L MAIN AC Sec 2, Phase A L MAIN AC Sec 1, Phase B BCC Printer C23473

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 18 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Group 1, Configuration 1:** 
**Post S/B Bus Location Pre S/B Bus Location**  **Nomenclature Circuit Breaker**  L MAIN AC Sec 2, Phase A L MAIN AC Sec 1, Phase B Crew Rest Powered Seats C25429**Group 1, Configuration 2:** Not changed. **J. References** 1. Existing Data: a. Engineering Change Memo PRR 61887 b. Boeing Service Bulletin 777-23-0125, 777-23-0176, 777-24-0087 c. Boeing Service Related Problem (SRP) 777-SRP-24-0091 d. Standard Overhaul Practices Manual (SOPM) 20-50-10 e. Standard Wiring Practices Manual (SWPM) 20-10-11, 20-10-12, 20-10-19, 20-30-11, 20-30-12, 20-30-16, 20-61-11, 20-74-11 f. 777 Aircraft Maintenance Manual (AMM) 12-11-01, 23-18-00, 23-18-05, 23-32-00, 24-22-00, 24-22-01, 24-31-02, 24-31-06, 33-13-00, 33-16-00, 33-21-00, 33-31-00, 33-44-00 g. 777 Wiring Diagram Manual (WDM) 23-32-02, 23-93-21, 24-51-24, 24-51-41, 46-01-11 h. BAE Systems Service Bulletin 233W3202-24-03, 233W3202-24-04 **NOTE:**These Service Bulletins were previously issued by Boeing. i. GE Aviation Service Bulletin 4000ELM-24-435, 5000ELM-24-451, 5000ELM-24-514, 5000ELM-24-560, 5000ELM-24-565, 5200ELM-24-566, 6000ELM-24-440, 6000ELM-24-460, 6000ELM-24-461, 6000ELM-24-545, 6000ELM-24-571, 6000ELM-24-572, 6000ELM-24-573, 6000ELM-24-588, 6000ELM-24-597, 6000ELM-24-614, 6000ELM-24-624, 6060ELM1-24-587, 6087ELM1-24-703, ELMS-24-UAL j. Smiths Service Bulletin 4000ELM-24-556, 4000ELM-24-619, 4000ELM-24-625, 5000ELM-24-450, 5000ELM-24-454, 5000ELM-24-554, 5000ELM-24-559, 5000ELM-24-562, 5000ELM-24-617, 6000ELM-24-456, 6000ELM-24-457, 6000ELM-24-555, 6000ELM-24-575, 6000ELM-24-590, 6000ELM-24-601, 6000ELM-24-604, 6000ELM-24-618, 6053ELM1-24-613, 6064ELM1-24-576, 6064ELM1-24-603, 6087ELM1-24-615, 6200ELM-24-581, 6200ELM-24-616, 6205ELM6-24-605, ELMS-24-ANA, ELMS-24-BAB, ELMS-24-EAD, ELMS-24-GUN, ELMS-24-JAL, ELMS-24-JAS, ELMS-24-KAL, ELMS-24-TII **NOTE:**The supplier was told to send copies of the service bulletin to each operator. 2. Data Supplied with this Service Bulletin: None.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 19 of 51 **BOEING SERVICE BULLETIN 777-24-0077**3. Installation Drawings Used in the Preparation of this Service Bulletin:
**Title Drawing Number**  Wire Bundle Installation - Bulkhead (STA 332.5) 288W4106 Wire Bundle Installation - L.S. Passenger Floor (STA 379-469) 288W4111 Wire Bundle Installation - L.S. Cab Floor and Forward Passenger Floor (STA 209.5-379.0) 288W4115 Wire Bundle Installation - R.S. Cab Floor and Forward Passenger Floor (STA 209.5-379.0) 288W4116

These drawings were used to prepare this service bulletin. These drawings are not necessary to make the specified changes, and are not supplied with this service bulletin. These drawings may not be applicable to all airplane configurations or operators. **K. Publications Affected** 1. Publications: **Chapter-Section Publication**  1.21, 6.10, 6.20, 6.30, NNC.6 777 Operations Manual 23-32 777 Maintenance Manual Equipment List, 23-32, 23-93, 24-51, 46-01 777 Wiring Diagram Manual 23-32, 23-93, 24-51 777 Schematic Diagram Manual 24-11, 24-21, 24-31, 24-41, 31-12, 33-13 777 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** Not affected.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 20 of 51 **BOEING SERVICE BULLETIN 777-24-0077 2. MATERIAL INFORMATION**  **A. Material - Price and Availability** Boeing can supply the kits shown in Paragraph 2.C., Parts Necessary for Each Airplane. Operators are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin. The kits are 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 **Group 1, Configuration 1: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER**  **AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION**
**Unit Price as of the Revision 3 date of this**  **Service Bulletin (US Dollars)**  **ROLT as of Revision 3 date of this Service** 

**Bulletin (Calendar Days)**  **Name Kit Number** 

1,346.00 182 TOP KIT - CABIN POWER ISOLATION SWITCH INSTALLATION 005W3206-1 90.00 (a) 149 WIRE 280W5110-105W (a) Wire 280W5110-105W is a supplemental kit to the top kit 005W3206-1. **Group 1, Configuration 2:** None. **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: **Group 1, Configuration 1:** To get the kits/parts shown below, refer to Paragraph 2.A., Material - Price and Availability. **Group 1, Configuration 1: NOTE:**  One top kit and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by the Operator, are necessary for each airplane.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 21 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Group 1, Configuration 1:** 
**Kit 005W3206 Notes**  **Existing Part Number**  **Name QTY**  **New Part Number -1**  (a) Top Kit

- 005W3206-1 Wire Kit 1 280W5110-1 Strap 45 BACS38K1 Strap 70 BACS38K1B Strap 25 BACS38K1E Strap 10 BACS38K2B (a) There are more parts than are necessary. **Group 1, Configuration 1:**
**Kit 280W5110 Notes**  **Existing Part Number**  **Name QTY**  **New Part Number -1**  **-101 -102**  **-103 -104**  **-201** (a) Wire Kit

- . . . . . 280W5110-1 Kit (W4236) 1

- . . . . 280W5110-101 Wire

. 1

. . . . 280W5110-101W Tie Wrap

. 1

. . . . 280W5110-10101 Kit (W1052) 1

. - . . . 280W5110-102 Wire

. . 1

. . . 280W5110-102W Tie Wrap

. . 1

. . . 280W5110-10201 Identification Tape

. . 1

. . . 280W5110-10202 Identification Tape

. . 1

. . . 280W5110-10203 Kit (W6120) 1

. . - . . 280W5110-103 Wire

. . . 1

. . 280W5110-103W Tie Wrap

. . . 1

. . 280W5110-10301 Identification Tape

. . . 1

. . 280W5110-10302 Kit (W6220) 1

. . . - . 280W5110-104 Wire

. . . . 1

. 280W5110-104W Tie Wrap

. . . . 1

. 280W5110-10401 Identification Tape

. . . . 1

. 280W5110-10402 Identification Tape

. . . . 1

. 280W5110-10403

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 22 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Group 1, Configuration 1:** 
**Kit 280W5110 Notes**  **Existing Part Number**  **Name QTY**  **New Part Number -1**  **-101 -102**  **-103 -104**  **-201** Identification Tape

. . . . 1

. 280W5110-10404 Identification Tape

. . . . 1

. 280W5110-10405 Kit (Spares) 1

. . . . - 280W5110-201 Contact, Socket

. . . 6 12 2 BACC47CN1S Contact, Pin

. . . . 3 1 BACC47CN2A Contact, Socket

. . 8

. . . BACC47CP1S Splice

. . . 1 1 2 BACT12C12 Contact, Socket

. . 6

. . . CTA0165 (CTA- 0165) Sleeve

. . . 1 1 2 D436-39 Contact, Pin

. . 2

. . . M39029-1-101 (M39029/1-101) End Cap

. . . . 1 1 324485 (a) There are more parts than are necessary. **Group 1, Configuration 1:**
**Kit 280W5110 Notes**  **Existing Part Num- ber**  **Name QTY**  **New Part Number -105W**  (a) Wire 1 280W5110-105W (a) Wire 280W5110-105W is a replacement for wire 280W5110-101W of incorrect length. Wire 280W5110- 101W is included in the wire kit 280W5110-101. **Group 1, Configuration 2:** None. 2. Parts and Materials Supplied by the Operator: **Group 1, Configuration 1:**
**Notes Existing Part Number**  **Name QTY**  **Part Number / Specifica- tion**  (c) (e) 233W3202-9 Electrical Power Control Panel 1 233W3202-18 (a) (c) (d) 233W3202-12 Electrical Power Control Panel 1 233W3202-18 (a)

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 23 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Group 1, Configuration 1:** 
**Notes Existing Part Number**  **Name QTY**  **Part Number / Specifica- tion**  (c) (d) 233W3202-13 Electrical Power Control Panel 1 233W3202-19 (a) (c) (d) 233W3202-11 Electrical Power Control Panel 1 233W3202-22 (b) (f)

- Contact, Pin 2 BACC47CN2A (a) This part is used in production. (b) This part is not used in production. (c) You cannot use the existing part to replace the new or changed part. (d) The existing part number can be changed to the new part number in accordance with BAE Systems SB 233W3202-24-04 Revision 2. (e) The existing part number can be changed to the new part number in two steps. The part number 233W3202-9 can be changed to part number 233W3202-12 in accordance with BAE Systems SB 233W3202-24-03 Original Issue, and then to the new part number in accordance with BAE Systems SB 233W3202-24-04 Revision 2. (f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data. **Group 1, Configuration 2:** None. 3. Parts Modified and Reidentified: The parts shown below are changed as shown in this service bulletin. The quantity (QTY) is the number of parts changed on each airplane. **Group 1, Configuration 1:**
**Notes New Part Number**  **Name QTY**  **Existing Part Number** (b) 233W3202-18 Electrical Power Control Panel 1 233W3202-9 (a) 233W3202-18 Electrical Power Control Panel 1 233W3202-12 (a) 233W3202-19 Electrical Power Control Panel 1 233W3202-13 (a) 233W3202-22 Electrical Power Control Panel 1 233W3202-11 (a) Make the change in accordance with BAE Systems SB 233W3202-24-04 Revision 2. (b) Make the change in two steps. The part number 233W3202-9 is changed to part number 233W3202-12 in accordance with BAE Systems SB 233W3202-24-03 Original Issue, and then to the new part number in accordance with BAE Systems SB 233W3202-24-04 Revision 2. **Group 1, Configuration 2:** None.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 24 of 51 **BOEING SERVICE BULLETIN 777-24-0077**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: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 25 of 51 **BOEING SERVICE BULLETIN 777-24-0077**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 26 of 51 **BOEING SERVICE BULLETIN 777-24-0077**

BLANK PAGE**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. Refer to the Boeing Standard Wiring Practices Manuals SWPM 20-10-11, SWPM 20-10-12, SWPM 20-30-11, SWPM 20-30-12, SWPM 20-30-16 and SWPM 20-61-11 for the wire installation procedures. Refer to SWPM 20-10-19 for the wire separation requirements. 4. If it is necessary to remove more parts for access, you can remove those parts. If you can get access without removing identified parts, it is not necessary to remove all of the identified parts. Jacking and shoring limitations must be observed. 5. Where the work instructions include installation of a kept part, a new or serviceable part with the same part number can be installed as an alternative to the kept part. 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. 7. These work instructions refer to procedures included on 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. **B. WORK INSTRUCTIONS Group 1, Configuration 1:**  1. Remove the electrical power from the airplane. Refer to 777 AMM 24-22-00, Remove Electrical Power, as an accepted procedure. 2. Remove the electrical power control panel. Refer to 777 AMM 24-22-01, Electrical Module Assembly Removal, as an accepted procedure. 3. Install a new electrical power control panel 233W3202-18, 233W3202-19 or 233W3202-22. Refer to 777 AMM 24-22-01, Electrical Module Assembly Installation, as an accepted procedure. **NOTE:**The removed electrical power control panel, part number 233W3202-11, 233W3202-12 or 233W3202-13, can be changed to the new part number in accordance with BAE Systems SB 233W3202-24-04 Revision 2.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 27 of 51 **BOEING SERVICE BULLETIN 777-24-0077 NOTE:** The removed electrical power control panel, part number 233W3202-9 can be changed to the new part number in two steps. The part number 233W3202-9 can be changed to part number 233W3202-12 in accordance with BAE Systems SB 233W3202-24-03 Original Issue, and then to the new part number in accordance with BAE Systems SB 233W3202-24-04 Revision 2. 4. Make a change to the airplane wiring in accordance with FIGURE 1, FIGURE 2 and FIGURE 3. 5. Make the changes to the ELMS panels P110, P210 and P320 in accordance with the Smiths/GE Aviation Service Bulletins that follow: **Description (Power Panel)**  **Service Bulletin Company** 

P320 4000ELM-24-435 Revision 8, Dated March 26, 2012 GE Aviation P320 4000ELM-24-556 Revision 1, Dated December 21, 2009 GE Aviation P320 4000ELM-24-619 Original Issue, Dated May 9, 2003 Smiths P320 4000ELM-24-625 Original Issue, Dated May 9, 2003 Smiths P110 5000ELM-24-450 Original Issue, Dated April 11, 2003 Smiths P110 5000ELM-24-454 Original Issue, Dated April 11, 2003 Smiths P110 5000ELM-24-554 Original Issue, Dated April 15, 2003 Smiths P110 5000ELM-24-559 Revision 2, Dated August 12, 2005 Smiths P110 5000ELM-24-560 Revision 2, Dated April 10, 2006 GE Aviation P110 5000ELM-24-562 Revision 1, Dated March 3, 2005 Smiths P110 5000ELM-24-565 Revision 2, Dated December 14, 2009 GE Aviation P110 5000ELM-24-617 Original Issue, Dated May 9, 2003 Smiths P110 5000ELM-24-451 Original Issue, Dated April 22, 2003 GE Aviation P110 5000ELM-24-514 Revision 2, Dated December 12, 2005 GE Aviation P110 5200ELM-24-566 Original Issue, Dated April 24, 2003 Smiths P210 6000ELM-24-461 Revision 1, Dated June 12, 2006 GE Aviation P210 6000ELM-24-555 Original Issue, Dated April 15, 2003 Smiths P210 6000ELM-24-571 Revision 6, Dated December 14, 2009 GE Aviation P210 6000ELM-24-572 Revision 3, Dated July 03, 2008 GE Aviation P210 6000ELM-24-573 Revision 1, Dated December 12, 2005 GE Aviation P210 6000ELM-24-575 Original Issue, Dated April 29, 2003 Smiths P210 6000ELM-24-588 Revision 1, Dated June 12, 2006 GE Aviation P210 6000ELM-24-590 Original Issue, Dated April 16, 2003 Smiths P210 6000ELM-24-597 Revision 1, Dated December 14, 2009 GE Aviation P210 6000ELM-24-601 Original Issue, Dated May 1, 2003 Smiths

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 28 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Description**  **(Power Panel) Service Bulletin**  **Company**

P210 6000ELM-24-604 Revision 1, Dated June 14, 2005 Smiths P210 6000ELM-24-614 Revision 1, Dated November 9, 2009 GE Aviation P210 6000ELM-24-618 Original Issue, Dated May 9, 2003 Smiths P210 6000ELM-24-624 Revision 5, Dated December 14, 2009 GE Aviation P210 6053ELM1-24-613 Original Issue, Dated July 8, 2003 Smiths P210 6060ELM1-24-587 Revision 1, Dated May 24, 2010 GE Aviation P210 6064ELM1-24-576 Original Issue, Dated May 6, 2003 Smiths P210 6064ELM1-24-603 Original Issue, Dated May 1, 2003 Smiths P210 6087ELM1-24-615 Original Issue, Dated July 8, 2003 Smiths P210 6000ELM-24-440 Revision 1, Dated December 21, 2005 GE Aviation P210 6000ELM-24-456 Revision 1, Dated February 17, 2005 Smiths P210 6000ELM-24-457 Original Issue, Dated April 11, 2003 Smiths P210 6000ELM-24-460 Revision 3, Dated December 2, 2009 GE Aviation P210 6000ELM-24-545 Revision 3, Dated December 22, 2005 GE Aviation P210 6200ELM-24-581 Revision 1, Dated March 5, 2010 GE Aviation P210 6200ELM-24-616 Revision 1, Dated March 5, 2010 GE Aviation P210 6205ELM6-24-605 Original Issue, Dated May 2, 2003 Smiths P210 6087ELM1-24-703 Original Issue, Dated January 26, 2009 GE Aviation The Smiths/GE Aviation service bulletins that follow are for reference and give the specific service bulletins applicable for each airplane.
**Notes Revision and Date**  **Smiths/GE Aviation Service Bulletins**  Reference Only Revision 2, Dated January 20, 2006 ELMS-24-ANA Reference Only Revision 1, Dated February 19, 2004 ELMS-24-BAB Reference Only Revision 1, Dated January 16, 2004 ELMS-24-EAD Reference Only Revision 1, Dated March 1, 2004 ELMS-24-GUN Reference Only Revision 1, Dated March 1, 2004 ELMS-24-JAL Reference Only Revision 3, Dated May 23, 2004 ELMS-24-JAS Reference Only Revision 3, Dated December 14, 2009 ELMS-24-KAL Reference Only Revision 1, Dated March 1, 2004 ELMS-24-TII Reference Only Revision 2, Dated February 16, 2009 ELMS-24-UAL 6. Do this continuity check:

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 29 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Airplanes**  **Result Panel**  **Pin Connector**  **Panel Pin**  **Connector To**  **From** All Continuity P210 24 D21037P P210 6 D21021P All Continuity 26 All Continuity 28 All Continuity 29 All Continuity 30 All Continuity 31 All Continuity P110 19 D11037P P210 6 D21021P All Continuity P110 7 D11037P P110 19 D11037P All Continuity 11 All Continuity 15 All Continuity 18 WA261-WA266, WB051-WB082 Continuity P320 9 D32012P P210 42 D21021P Continuity 10 28 D21027P Continuity 11 29 D21027P Continuity 12 30 D21027P All Continuity P61 A2 DM23217G P5 46 DM24023B All Continuity A3 47 DM24023B All Continuity A1 48 DM24023B All Continuity A19 49 DM24023B All Continuity A20 50 DM24023B All Continuity A18 51 DM24023B All Continuity Ground 45 DM24023B All Continuity Ground 52 DM24023B 7. Supply the electrical power to the airplane. Refer to 777 AMM 24-22-00, Supply Electrical Power, as an accepted procedure. 8. Do the Master Dim and Test - Operational Test, and the Integral Panel Lights - Operational Test for the electrical power control panel. Refer to 777 AMM 33-16-00 for the Master Dim and Test - Operational Test, and 777 AMM 33-13-00 for the Integral Panel Lights - Operational Test, as accepted procedures. 9. Do this test of the passenger cabin systems: a. Prepare for the test. (1) Make sure that the circuit breakers that follow on the P210 panel are closed:

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 30 of 51 **BOEING SERVICE BULLETIN 777-24-0077 NOTE:** This list is all inclusive. Operators should compare this list to the Wiring Diagram Manual Equipment List (ELI) to find the circuit breakers installed on a specific airplane.
**Notes Number, Location, Name**  C21608, G2, R LAV/GLY FAN CTRL C23302, D13, CTU C23303, A2, SVU ZONE 1 L-C-R C23309, A5, SVU ZONE 3 R-C WA002-WA017 if Boeing Service Bulletin 777-23-0125 has been done. C23309, A5, BUFFER BOX 2
C23310, B2, SVU ZONE 3 L-C WA002-WA017 if Boeing Service Bulletin 777-23-0125 has been done. C23310, B2, BUFFER BOX 3
C23354, C27, NATS PWR C23403, C1, VIDEO PGMS & CTRL C23404, D14, VIDEO PGMS & CTRL 2 C23405, C13, CABIN PRINTER C23410, D3, VIDEO DISTR 1 C23411, C14, VIDEO DISTR 2 C23412, E6, VIDEO DISTR 3 C23413, E8, VIDEO DISTR 4 C23430, C6, CABIN TELECOMMUNICATION UNIT C23432, D3, UHF - R C23434, E5, UHF - L C23448, C2, ZNC/ZNTU C23450, D23, M1/M2 GALLEY HANDSETS C23452, D22, FAX/F5 GALLEY HANDSET C23454, E7, CABIN FILE SERVER C23455, D23, FAX MACHINE C23460, A23, CABIN UNIT/HOLSTER C23461, D22, TFTS MPU & XMTR/RCRV C23462 , C7 , VIDEO DISTR 1A C23616, H8, ENTMT CTRL R C23644, H7, PASSENGER TELEPHONE 2 C23650, J10, CTM/HOLSTER

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 31 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Notes**  **Number, Location, Name** C23658, G12, IFE MASTER CTRL C24451, B19, FLT DK SW PWR DISTR 1 C24452, D14, FLT DK SW PWR DISTR 2 C24688, G13, IFE SEATS DECK SW C25312, F10, PAX SEAT R C25314, F13, PAX SEAR C C25315, F7, PAX SEAT 2R C25316, F4, PAX SEAR 2C C25320, A21, IN-SEAT POWER OUTLETS ZONE 1 (2) Make sure that the circuit breakers that follow on the P110 panel are closed: **NOTE:** This list is all inclusive. Operators should compare this list to the Wiring Diagram Manual Equipment List (ELI) to find the circuit breakers installed on a specific airplane.
**Notes Number, Location, Name**  C23305, A24, SVU ZONE 2 R-C C23307, A27, SVU ZONE 2 L-C WA002-WA017 if Boeing Service Bulletin 777-23-0125 has been done. C23307, A27, BUFFER BOX 1
C23401, D27, MULTP AUDIO ENTMT CTRL C23407, F28, VIDEO DISTR 1 C23408, E23, VIDEO DISTR 2 C23409, C21, VIDEO DISTR 3 C23641, G23, ENTMT CTRL L C23643, H15, PASSENGER TELEPHONE 1 C25311, F16, PAX SEAT L C25317, F19, PAX SEAT 2L (3) Make sure that the circuit breaker that follows on the P320 panel is closed: **NOTE:** This list is all inclusive. Operators should compare this list to the Wiring Diagram Manual Equipment List (ELI) to find the circuit breakers installed on a specific airplane.
**Notes Number, Location, Name**  C23475, K6, VEP AC

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 32 of 51 **BOEING SERVICE BULLETIN 777-24-0077**(4) On the P5 panel, select the IFE/PASS SEATS switch to the ON position. (5) On the CSCP, select these menu items, Cabin Controls, Seat Control and Audio Monitor, Seat/Audio Player Power Control, Seat Power "ON", Audio Entertainment Player "ON". b. Do this test of the IFE electrical power. (1) For airplanes WA002-WA017, WA076-WA080, WA086-WA093, WA116-WA119, WA196-WA198, WA206-WA209, WB001-WB015, WB101-WB104, WB121-WB125 and WB131-WB132, on the seat rows aft of door 1, see that the passenger control units (PCU) are powered (LEDs are on). This step does a check that circuit breaker C23303 is connected to the electrical power. **NOTE:** For airplanes WA002-WA017, circuit breaker C23303 is collared if Boeing Service Bulletin 777-23-0125 has been done. If the circuit breaker is collared, it is not necessary to do this step. (2) For airplanes WA002-WA017, WA076-WA080, WA196-WA198, WA207-WA209, WB001-WB015, WB101-WB104 and WB121-WB125, on the seat rows aft of door 2, see that the passenger control units (PCU) are powered (LEDs are on). This step does a check that circuit breakers C23305 and C23307 are connected to the electrical power. **NOTE:** For airplanes WA002-WA017, if Boeing Service Bulletin 777-23-0125 has been done, check to see that buffer box 1 is powered (C23307). (3) For airplanes WA002-WA017, WA076-WA080, WA196-WA198, WA207-WA209, WB001-WB015, WB101-WB104 and WB121-WB125, on the seat rows aft of door 3, see that the passenger control units (PCU) are powered (LEDs are on). This step does a check that circuit breakers C23309 and C23310 are connected to the electrical power. **NOTE:** For airplanes WA002-WA017, if Boeing Service Bulletin 777-23-0125 has been done, check to see that buffer box 2 (C23309) and buffer box 3 (C23310) are powered. (4) See that the video entertainment player 1 (in the purser work station/video control center) has power (LED is on). For all airplanes except WB074-WB082, this step does a check that circuit breaker C23403 is connected to the electrical power. For all airplanes WB074-WB082, this step does a check that circuit breaker C23475 is connected to the electrical power. (5) On the E2-4 shelf, see that the Audio Entertainment Player(s) are powered (at least one LED is on). This step does a check that circuit breaker C23401 is connected to the electrical power. (6) For all airplanes except WA002-WA017, WB068-WB082 and WB121-WB125, turn on the passenger video entertainment system. Refer to 777 AMM 23-32-00, Power On the Video Entertainment System, as an accepted procedure. See that all the projectors and monitors are on. This step checks that circuit breakers C23462, C23407, C23408, C23409, C234010, C23411, C23412, C23413, C23421 and C23422, if applicable, are connected to the electrical power.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 33 of 51 **BOEING SERVICE BULLETIN 777-24-0077**c. For airplanes WA002-WA017, WA076-WA080, WA196-WA198, WA206-WA209, WB001-WB015, WB051-WB082, WB101-WB104, WB121-WB125 and WB 131-WB132, do this passenger seat power test. (1) On the seat rows aft of door 1 left, use the seat switches to see that the seats are powered. This step checks that circuit breaker C25311 is connected to electrical power. **NOTE:**Airplanes WB051-WB082 have this circuit breaker installed. If the circuit breaker has a collar installed, it is not necessary to do this step. (2) On the center seat rows aft of door 1, use the seat switches to see that the seats are powered. This step checks that circuit breaker C25314 is connected to electrical power. **NOTE:**Airplanes WB051-WB082 have this circuit breaker installed. If the circuit breaker has a collar installed, it is not necessary to do this step. (3) On the seat rows aft of door 1 right, use the seat switches to see that the seats are powered. This step checks that circuit breaker C25312 is connected to electrical power. **NOTE:**Airplanes WB051-WB082 have this circuit breaker installed. If the circuit breaker has a collar installed, it is not necessary to do this step. d. For airplanes WA261-WA266 do this test of the in seat power outlets. (1) On the seat rows aft of door 1, see that the PC power outlets have electrical power. See that LED is illuminated. This step checks that the circuit breaker C25320 is connected to electrical power. e. For all airplanes except WA131-WA137, WA171-WA175, WA206-WA209, WA261-WA266 and WB051-WB082 do this test of the passenger telephones. (1) Try to make a phone call from either a wall mount telephone or an in-seat telephone. Refer to 777 AMM 23-18-00 as an accepted procedure. If a call can be made, or a busy signal is heard, the system is serviceable. This step checks that circuit breaker C23430 is connected to electrical power. Circuit breaker C23430 powers the cabin telecommunications unit. **NOTE:**Airplanes WB051-WB082 have this circuit breaker installed. The circuit breaker is for provisions only and has a collar and an INOP label installed. f. Do this test of the IFE/PASS SEATS switch. (1) On the P5 panel, select the IFE/PASS SEATS switch to OFF. (2) Make sure that all the IFE equipment in the purser work station or video control center no longer has electrical power. Some components may have battery backup units. For these components it may take several minutes before the electrical power is removed. (3) Make sure that the overhead video system is off (no video signal, monitor may still be powered). (4) Make sure that all the passenger control units on the passenger seats are off (electrical power is removed).

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 34 of 51 **BOEING SERVICE BULLETIN 777-24-0077**(5) For all airplanes with PC power outlets, make sure that all the PC power outlets do not have electrical power. See that LEDs are not illuminated. (6) For airplanes with powered seats, make sure the powered seats do not operate (electrical power is removed). (7) For airplanes with wall mounted telephones, make sure that the telephone does not operate. Swipe a valid credit card through the card reader. Make sure that no dial tone can be heard. (8) On the P5 panel, select the IFE/PASS SEATS switch to ON. g. Do this test of the passenger seat/audio player power control system. (1) See that the overhead video system is on. Refer to 777 AMM 23-32-00, Power On the Video Entertainment System, as an accepted procedure to get the recommended instructions. (2) On the CSCP, select these menu items, Cabin Controls, Seat Control and Audio Monitor, Seat/Audio Player Power Control, Seat Power "OFF", Audio Entertainment Player "OFF". (3) See that the overhead video system is on. (4) Make sure that all the passenger control units on the passenger seats are off (electrical power is removed). (5) For all airplanes with PC power outlets, make sure that all the PC power outlets have electrical power. See that LEDs are illuminated. (6) For airplanes with powered seats, make sure the powered seats operate (electrical power is available). (7) For airplanes with wall mounted telephones, make sure that the telephones operate. Swipe a valid credit card through the card reader. Make sure that a dial tone can be heard. (8) For airplanes WB037-WB044, see that these switches are serviceable (the switch is illuminated). — PC/SEAT POWER ISOLATION SWITCH MCU 1 — PC/SEAT POWER ISOLATION SWITCH MCU 2 — PC/SEAT POWER ISOLATION — SEAT/PC PWR FAULT (9) Select the IFE master power switch to the ON position. 10. Do this test of the CABIN/UTIL switch: a. Make sure that the circuit breakers that follow on the P110 panel are closed:

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 35 of 51 **BOEING SERVICE BULLETIN 777-24-0077 Notes**  **Number, Location, Name** C21444, A07, L DR 1 HTR C21446, B07, L DR 2 HTR C21448, C07, L DR 3 HTR C21450, C08, L DR 4 HTR C28307, E05, L FWD FUEL BOOST PUMP b. Make sure that the circuit breakers that follow on the P210 panel are closed:
**Notes Number, Location, Name**  C21445, A25, R DR 1 HTR C21447, A24, R DR 2 HTR C21449, D28, R DR 3 HTR C21451, B25, R DR 4 HTR C33486, E09, RED ANTI-COLL LTS C33636, M11, RED ANTI-COLL LTS CTRL c. Make sure that the circuit breakers that follow on the P310 panel are closed:
**Notes Number, Location, Name**  C24620, M02, MN BAT CHARGER d. Make sure that the circuit breakers that follow on the P320 panel are closed:
**Notes Number, Location, Name**  C24300, K09, MN BAT CHARGER PWR C24301, K12, APU BAT CHARGER PWR C33416, G02, CABIN LTS FWD R C28301, G09, L FWD FUEL BOOST PUMP GND SVCE C33417, L02, CABIN LTS FWD L C33418, H04, CABIN LTS MID FWD R C33419, L06, CABIN LTS MID FWD L C33420, H09, CABIN LTS MID AFT R C33421, L10, CABIN LTS MID AFT L C33422, G03, CABIN LTS AFT R C33423, L07, CABIN LTS AFT L C33518, J12, E/E EQUIP CTR LTS

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 36 of 51 **BOEING SERVICE BULLETIN 777-24-0077**e. Make sure that the circuit breakers that follow on the P49 panel are closed:
**Notes Number, Location, Name**  C24622, A01, APU BAT CHARGER f. On the P5 panel, see that the CABIN/UTIL switch is selected to the ON position. g. For airplanes with an airborne fax machine, see that the fax machine has electrical power. Refer to 777 AMM 23-18-05 as an accepted procedure to get more data about the location of the fax machine. h. Do a test of the sidewall lights and indirect ceiling lights. Refer to 777 AMM 33-21-00, Passenger Compartment Illumination - Operational Test, as an accepted procedure. This step makes sure that all phases of the ground service bus, sections 1 and 2, have electrical power. It is not necessary to do the test for the night lights. i. Do a test of the forward equipment center lights. Refer to 777 AMM 33-31-00, Service and Cargo Loading Lights - Operational Test of the Forward and Main Equipment Center Lights, as an accepted procedure. This step makes sure the 28V AC ground service bus has electrical power. j. Do a test of the red anti-collision lights on the upper and lower body. Refer to 777 AMM 33-44-00, Anti-Collision Lights - Operational Test, as an accepted procedure. It is only necessary to do a test of the upper and lower anti-collision lights. This step makes sure there is electrical power on the right main AC bus. k. On the P5 panel, select the CABIN/UTIL switch to the OFF position. l. For airplanes with an airborne fax machine, see that the fax machine does not have electrical power. m. Do a test of the sidewall lights and indirect ceiling lights. Refer to 777 AMM 33-21-00, Passenger Compartment Illumination - Operational Test, as an accepted procedure. The lights should not come on. This step makes sure that all phases of the ground service bus, sections 1 and 2, do not have electrical power. It is not necessary to do the test for the night lights. n. See that the passenger seat reading lights, attendant work lights, night lights and supplemental night lights are all on. This step does a check of the new cabin management system (CMS) database (refer to Boeing Service Bulletin 777-23-0176). o. Do a test of the forward equipment center lights. Refer to 777 AMM 33-31-00, Service and Cargo Loading Lights - Operational Test of the Forward and Main Equipment Center Lights, as an accepted procedure. The lights should not come on. This step makes sure the 28V AC ground service bus does not have electrical power. p. Do a test of the red anti-collision lights on the upper and lower body. Refer to 777 AMM 33-44-00, Anti-Collision Lights - Operational Test, as an accepted procedure. It is only necessary to do a test of the upper and lower anti-collision lights. The lights should not come on. This step makes sure there is no electrical power on the right main AC bus.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 37 of 51 **BOEING SERVICE BULLETIN 777-24-0077**q. Do a test of the main battery charger operation. Refer to 777 AMM 24-31-02, Main Battery Charger Installation Test, as an accepted procedure. r. Do a test of the APU battery charger operation. Refer to 777 AMM 24-31-06, APU Battery Charger Installation Test, as an accepted procedure. s. Do this test of the left forward fuel boost pump operation: **WARNING:**DO NOT OPERATE ANY FUEL PUMP IF THE AMBER PRESS LIGHT COMES ON AND STAYS ON. FUEL VAPORS IN THE TANK MAY IGNITE AND CAUSE A FIRE OR EXPLOSION. (1) To operate any of the fuel pumps, you must be in the flight compartment to continuously monitor the fuel quantity and the low pressure indication in the applicable tank. Immediately set the applicable fuel pump switch-light to OFF if the amber PRESS light comes on and stays on. (2) Make sure there is a minimum of 6,000 LB (2,700 KGS) in the left main fuel tank. **NOTE:**This fuel quantity is necessary to prevent dry operation of the fuel pump. If it necessary to refuel the fuel tanks, refer to the 777 AMM 12-11-01 as an accepted procedure. (3) On the P5 panel, push the L FWD PUMP switch-light to the ON position. (4) On the P5 panel, make sure the left forward fuel boost pump PRESS light goes off. The PRESS light can take up to 20 seconds to go off. (5) On the EICAS display, see that the FUEL PUMP L FWD message is not displayed. (6) On the P5 panel, push the L FWD PUMP switch-light to the OFF position. (7) On the P5 panel, make sure the left forward fuel boost pump PRESS light comes on. The PRESS light can take up to 20 seconds to come on. t. On the P5 panel, see that the CABIN/UTIL switch is selected to the ON position. 11. Put the airplane back to a serviceable condition.

**Group 1, Configuration 2: CONDITION: MORE WORK IS NECESSARY - ELECTRICAL POWER CONTROL PANEL**  **INSPECTION** 1. In the flight compartment, get access to the electrical power control panel. Refer to 777 AMM 24-22-01 as an accepted procedure. 2. Do an inspection on the electrical power control panel for the part number. 3. If the electrical power control panel does not have the part number 233W3202-18 or 233W3202-19, then no change is necessary.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 38 of 51 **BOEING SERVICE BULLETIN 777-24-0077**4. If the electrical power control panel has the part number 233W3202-18, and does not have lockwire provisions on the switch guards at switches S6 and S10, then no change is necessary. 5. If the electrical power control panel has the part number 233W3202-18, and does have lockwire provisions on the switch guards at switches S6 and S10, then change the part number to 233W3202-19. Refer to SOPM 20-50-10 as an accepted procedure. 6. If the electrical power control panel has the part number 233W3202-19, and does have lockwire provisions on the switch guards at switches S6 and S10, then no change is necessary. 7. If the electrical power control panel has the part number 233W3202-19, and does not have lockwire provisions on the switch guards at switches S6 and S10, then change the part number to 233W3202-18. Refer to SOPM 20-50-10 as an accepted procedure. 8. Put back the electrical power control panel. Refer to 777 AMM 24-22-01 as an accepted procedure. 9. Put the airplane back to a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4: October 17, 2012 39 of 51 **BOEING SERVICE BULLETIN 777-24-0077 This Figure applies only to: Group 1, Configuration 1.** 

REFERENCE: 777 WDM 23-93-21, 777 WDM 24-51-24, 777 WDM 24-51-41

**FIGURE 1: CHANGE THE AIRPLANE WIRING - GROUP 1 (SHEET 1 OF 4)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 40 of 51 **BOEING SERVICE BULLETIN 777-24-0077**REFERENCE: 777 WDM 23-32-02

**FIGURE 1: CHANGE THE AIRPLANE WIRING - GROUP 1 (SHEET 2 OF 4)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 41 of 51 **BOEING SERVICE BULLETIN 777-24-0077**REFERENCE: 777 WDM 23-32-02, 777 WDM 46-01-11

**FIGURE 1: CHANGE THE AIRPLANE WIRING - GROUP 1 (SHEET 3 OF 4)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 42 of 51 **BOEING SERVICE BULLETIN 777-24-0077**The flag note numbers shown below agree with the numbers shown in the flag symbols in the figure.
**NOTES QTY**  **PART NUMBER NAME**  **FLAG NOTE**  8 BACC47CP1S Contact, Socket 1 Refer to SWPM 20-74-11 as an accepted procedure. 6 CTA0165 (CTA-0165) Contact, Socket 2

2 M39029-1-101 (M39029/1-101) Contact, Pin 3

15 BACC47CN1S Contact, Socket 4 2 BACT12C12 Splice 5 2 D436-39 Sleeve Airplanes WA261-WA266, WB051-WB082. 6 1 324485 End Cap 7 5 BACC47CN2A Contact, Pin 8 Refer to SWPM 20-10-11 as an accepted procedure. 1 280W5110-10202 Identification Tape 9
Refer to SWPM 20-10-11 as an accepted procedure. 1 280W5110-10203 Identification Tape 10
Refer to SWPM 20-10-11 as an accepted procedure. 1 280W5110-10302 Identification Tape 11
Refer to SWPM 20-10-11 as an accepted procedure. 1 280W5110-10404 Identification Tape 12
Refer to SWPM 20-10-11 as an accepted procedure. 1 280W5110-10405 Identification Tape 13
Refer to SWPM 20-10-11 as an accepted procedure. 1 280W5110-10403 Identification Tape 14
Refer to SWPM 20-10-11 as an accepted procedure. 1 280W5110-10402 Identification Tape 15

**FIGURE 1: CHANGE THE AIRPLANE WIRING - GROUP 1 (SHEET 4 OF 4)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 43 of 51 **BOEING SERVICE BULLETIN 777-24-0077 This Figure applies only to: Group 1, Configuration 1.** 

**FIGURE 2: FLIGHT DECK - AIRPLANE WIRE ROUTING (SHEET 1 OF 2)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 44 of 51 **BOEING SERVICE BULLETIN 777-24-0077**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane.
**NOTES QTY**  **PART NUMBER NAME**  **TASK STEP**  Make the changes to wire bundle W1052 in accordance with FIGURE 1. Use the straps as necessary. Wire bundle W1052 has a separation code RM2 and a tie color brown. Refer to SWPM 20-10- 19 as an accepted procedure. 1 280W5110-102W Wires Install 1

- BACS38K1B Strap Use:

- BACS38K2B Strap

**FIGURE 2: FLIGHT DECK - AIRPLANE WIRE ROUTING (SHEET 2 OF 2)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 45 of 51 **BOEING SERVICE BULLETIN 777-24-0077 This Figure applies only to: Group 1, Configuration 1.** 

**FIGURE 3: MAIN EQUIPMENT CENTER - AIRPLANE WIRE ROUTING (SHEET 1 OF 6)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 46 of 51 **BOEING SERVICE BULLETIN 777-24-0077 FIGURE 3: MAIN EQUIPMENT CENTER - AIRPLANE WIRE ROUTING**  **(SHEET 2 OF 6)**
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 47 of 51 **BOEING SERVICE BULLETIN 777-24-0077 FIGURE 3: MAIN EQUIPMENT CENTER - AIRPLANE WIRE ROUTING**  **(SHEET 3 OF 6)**
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 48 of 51 **BOEING SERVICE BULLETIN 777-24-0077 FIGURE 3: MAIN EQUIPMENT CENTER - AIRPLANE WIRE ROUTING**  **(SHEET 4 OF 6)**
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 49 of 51 **BOEING SERVICE BULLETIN 777-24-0077 FIGURE 3: MAIN EQUIPMENT CENTER - AIRPLANE WIRE ROUTING**  **(SHEET 5 OF 6)**
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 50 of 51 **BOEING SERVICE BULLETIN 777-24-0077**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane.
**NOTES QTY**  **PART NUMBER NAME**  **TASK STEP**  Make the changes to wire bundle W4236 in accordance with FIGURE 1. Use the straps as necessary. Wire bundle W4236 has a separation code NN2 and a tie color white. Refer toSWPM 20-10-19 as an accepted procedure. 1 280W5110-105W Wires Install 1

- BACS38K1 Strap Use:

Make the changes to wire bundle W6120 in accordance with FIGURE 1. Use the straps as necessary. Wire bundle W6120 has a separation code LM2 and a tie color yellow. Refer toSWPM 20-10-19 as an accepted procedure. 1 280W5110-103W Wires Install 2

- BACS38K1E Strap Use:

Make the changes to wire bundle W6220 in accordance with FIGURE 1. Use the straps as necessary. Wire bundle W6220 has a separation code RM1 and a tie color brown. Refer toSWPM 20-10-19 as an accepted procedure. 1 280W5110-104W Wires Install 3

- BACS38K1B Strap Use:

- BACS38K2B Strap

**FIGURE 3: MAIN EQUIPMENT CENTER - AIRPLANE WIRE ROUTING (SHEET 6 OF 6)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 21, 2003 777-24-0077 Revision 4 October 17, 2012 51 of 51 **BOEING SERVICE BULLETIN 777-24-0077**