June 27, 2002

Revision 1: October 05, 2006 777-24-0074

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 27

Commercial

Airplane

Group 777

Service Bulletin

Number: 777-24-0074

Date: June 27, 2002

Revision 1 October 05, 2006

ATA System: 2400

SUBJECT: ELECTRICAL POWER - General - Install the Passenger Compartment Electrical 

Power Isolation Switches (Partial)

BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET

Copyright © 2002 The Boeing Company

Unpublished Work - All Rights Reserved

Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable 

subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.

This document includes proprietary information owned by The Boeing Company and/or one or more third 

parties. Treatment of the document and the information it contains is governed by contract with Boeing. For 

more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.

Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, BBJ, DC-8, DC-9, 

DC-10, MD-10, MD-11, MD-80, MD-88, MD-90, and the red-white-and-blue Boeing livery are all trademarks 

owned by The Boeing Company; and no trademark license is granted in connection with this document unless 

provided in writing by Boeing.
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 Table of Contents

June 27, 2002

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BOEING SERVICE BULLETIN 777-24-0074

Table of Contents

Revision Transmittal Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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 . . . . . . . . . . . . . . . . . . . . . . . . . 17

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: . . . . . . . . . . . . . . . . . . . . . . 20

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 . . . . . . . . . . . . . . . . . . . . . 21

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

FIGURE 1: INSTALL THE NEW WIRES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

FIGURE 2: CHANGE THE AIRPLANE WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
 Table of Contents

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BOEING SERVICE BULLETIN 777-24-0074

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June 27, 2002

Revision 1: October 05, 2006 777-24-0074

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 5 of 27

Commercial

Airplane

Group 777

Service Bulletin

Number: 777-24-0074 Revision Transmittal Sheet

Date: June 27, 2002

Revision 1: October 05, 2006

ATA System: 2400

SUBJECT: ELECTRICAL POWER - General - Install the Passenger Compartment Electrical 

Power Isolation Switches (Partial)

This Revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION

Airplanes WB406 and WB476 were added to Group 1 of this service bulletin effectivity.

No more work is necessary on airplanes changed as shown in the initial release of this service bulletin.

REASON FOR REVISION

This revision is sent to add airplanes WB406 and WB476 to Group 1 of this service bulletin effectivity.

Changes to this service bulletin include:-

— Paragraph 1.A., Effectivity, airplanes WB406 and WB476 were added.

— Paragraph 1.H., Weight and Balance, weight and balance figures were corrected.

— Paragraph 2.A., Material - Price and Availability, the unit price of kit 005W3198-1 has been updated.

— Paragraph 2.C., Parts Necessary for Each Airplane, part numbers in wire kit 280W5111 were corrected.

— Paragraph 2.C., Parts Necessary for Each Airplane, part numbers in wire kit 280W5111 were corrected.

Paragraph 1.A., Effectivity, shows changes of airplane operators. Each operator should examine the Effectivity 

paragraph for changes.

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.

The data given in Information Notice 777-24-0074 IN 01 is included in this revision.

The data given in Information Notice 777-24-0074 IN 02 is included in this revision.

REVISION HISTORY

Original Issue: June 27, 2002

Revision 1: October 5, 2006
 

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BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7 of 27

Commercial

Airplane

Group 777

Service Bulletin

Number: 777-24-0074 Summary

Date: June 27, 2002

Revision 1: October 05, 2006

ATA System: 2400

SUBJECT: ELECTRICAL POWER - General - Install the Passenger Compartment Electrical 

Power Isolation Switches (Partial)

CONCURRENT REQUIREMENTS

Boeing service bulletin 777-24-0070, is necessary to be accomplished prior to or concurrent with this service 

bulletin.

BACKGROUND

Boeing Service Related Problem (SRP) 777-SRP-24-0091 is related to this service bulletin.

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. Smoke and flames in the passenger cabin can cause injury 

to the passenger and damage the safety critical cabin equipments.

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 the systems connected to the following 

circuit breakers (if installed):

Circuit 

Breaker

Panel and 

Position

Nomenclature

C21332 P110, B021 IFE COOLING FAN

C23355 P110, D021 VOD

C23356 P210, A005 IFE ZIA 1

C23357 P110, A024 IFE ZIA 2

C23358 P110, A027 IFE ZIA 3

C23359 P210, B002 IFE ZIA 4

C23403 P210, E005 VIDEO PGMS & CTRL

C23405 P210, C013 CABIN PRINTER

C23471 P210, E008 VIDEO PGMS & CTRL B
 

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BOEING SERVICE BULLETIN 777-24-0074

When selected OFF, the CABIN/UTILITY switch will remove power from all galleys, the left and right utility 

buses, and systems connected to the following circuit breakers (if installed):

ACTION

Remove the electrical system control panel. Change the airplane wiring to install 8 new wires and remove 2 

wires between the P5 panel and the P61 overhead panel card file. Install a new electrical system control panel 

with the two new cabin power control switches. Do a test of the new cabin power switches. 

EFFECTIVITY

777-200/-300 Airplanes. Refer to Service Bulletin Paragraph 1.A.1 for effectivity.

COMPLIANCE

Boeing recommends that this service bulletin to be done within 60 months from the effective date of an 

applicable Airworthiness Directive.

INDUSTRY SUPPORT INFORMATION

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

MANPOWER

The change to the electrical system control panel as given in the component service bulletin 233W3202-24-4 is 

not included.

MATERIAL INFORMATION

Boeing Supplied Kits/Parts.

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

Circuit 

Breaker

Panel and 

Position

Nomenclature

C21308 P210, A010 BULK CGO VENT FAN

C21330 P110, F023 FWD CGO EXHAUST FAN

C33486 P210, E009 RED ANTI-COLL LTS

Airplanes Total Task Hours Elapsed Hours

700-200 and 777-300 5.0 5.0
 

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BOEING SERVICE BULLETIN 777-24-0074

FLIGHT COMPARTMENT OVERHEAD PANEL CARD FILE

CONTROL PANEL AND THE P61

BETWEEN THE ELECTRICAL

AND REMOVE 2 WIRES

INSTALL 8 NEW WIRES

FWD

POWER SWITCH

NEW CABIN

PANEL

SYSTEM CONTROL

ELECTRICAL

SEE A

UP

FWD

V78076

A

B

SEE B
 

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BOEING SERVICE BULLETIN 777-24-0074

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Revision 1: October 05, 2006 777-24-0074

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 11 of 27

Commercial

Airplane

Group 777

Service Bulletin

Number: 777-24-0074

Date: June 27, 2002

Revision 1: October 05, 2006

ATA System: 2400

SUBJECT: ELECTRICAL POWER - General - Install the Passenger Compartment Electrical 

Power Isolation Switches (Partial)

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.

Airplane models:

777-200 777-300

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER

AIR AUSTRAL (AUX)

1 WB366–WB367

AIR CHINA (BEJ)

1 WA241–WA250

AIR FRANCE (AFA)

1 WB311–WB327

ALL NIPPON AIRWAYS (ANA)

1 WA221–WA223 WA231–WA232 WB481–WB484 WB531–WB535

AMERICAN AIRLINES (AAL)

1 WB416–WB433 WC051–WC067

GROUP CONFIGURATION DESCRIPTION

1 - 777-200/-300 airplanes that require flight deck 

switch installation.
 

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BOEING SERVICE BULLETIN 777-24-0074

ASIANA AIRLINES (AAR)

1 WC111

AUSTRIAN (AUL)

1 WB271–WB272

BRITISH AIRWAYS (BAB)

1 WB016–WB021 WB031–WB044 WB411–WB413

CATHAY PACIFIC AIRWAYS (CAT)

1 WA001 WA101–WA104 WB501–WB507

CONTINENTAL AIRLINES (CAL)

1 WB371–WB386

DELTA AIR LINES (DAL)

1 WB446–WB452

EGYPTAIR (EGP)

1 WB151–WB153

EL AL ISRAEL AIRLINES (ELA)

1 WC101–WC103

EMIRATES (EAD)

1 WB105–WB106 WB631–WB632 WB636–WB637

JAL DOMESTIC (JAS)

1 WA210–WA212

JAL INTERNATIONAL (JAL)

1 WB591–WB595

KOREAN AIR (KAL)

1 WB133–WB135 WB551–WB554

KUWAIT AIRWAYS (KUW)

1 WB306–WB307

MALAYSIA AIRLINES (MAS)

1 WB161–WB173

MID EAST JET (SKL)

1 WB406

SAUDI ARABIAN AIRLINES (SVA)

1 WB276–WB286 WB291–WB301

SAUDI OGER (SAO)

1 WB476

SINGAPORE AIRLINES (SIA)

1 WB181–WB188 WB231–WB239 WB611–WB615
 

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BOEING SERVICE BULLETIN 777-24-0074

THAI AIRWAYS INTERNATIONAL (TII)

1 WB601–WB606

VIETNAM AIRLINES (VIE)

1 WB336–WB337

IDENTIFICATION BY VARIABLE NUMBER

Variable Group

WA001 1

WA101–WA104 1

WA210–WA212 1

WA221–WA223 1

WA231–WA232 1

WA241–WA250 1

WB016–WB021 1

WB031–WB044 1

WB105–WB106 1

WB133–WB135 1

WB151–WB153 1

WB161–WB173 1

WB181–WB188 1

WB231–WB239 1

WB271–WB272 1

WB276–WB286 1

WB291–WB301 1

WB306–WB307 1

WB311–WB327 1

WB336–WB337 1

WB366–WB367 1

WB371–WB386 1

WB406 1

WB411–WB413 1

WB416–WB433 1

WB446–WB452 1

WB476 1

WB481–WB484 1

WB501–WB507 1

WB531–WB535 1

WB551–WB554 1

WB591–WB595 1

WB601–WB606 1
 

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BOEING SERVICE BULLETIN 777-24-0074

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

You cannot make the changes given in this service bulletin unless the changes given in Boeing 

Service Bulletin 777-24-0070 are made.

The related Boeing Component Service Bulletin is 233W3202-24-04.

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. Smoke and flames in the passenger 

cabin can cause injury to the passenger and damage the safety critical cabin equipments.

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 the systems connected to 

the following circuit breakers (if installed):

WB611–WB615 1

WB631–WB632 1

WB636–WB637 1

WC051–WC067 1

WC101–WC103 1

WC111 1

Circuit 

Breaker

Panel and 

Position

Nomenclature

C21332 P110, B021 IFE COOLING FAN

C23355 P110, D021 VOD

C23356 P210, A005 IFE ZIA 1

C23357 P110, A024 IFE ZIA 2

C23358 P110, A027 IFE ZIA 3

C23359 P210, B002 IFE ZIA 4

C23403 P210, E005 VIDEO PGMS & CTRL

C23405 P210, C013 CABIN PRINTER

C23471 P210, E008 VIDEO PGMS & CTRL B

Variable Group
 

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BOEING SERVICE BULLETIN 777-24-0074

When selected OFF, the CABIN/UTILITY switch will remove power from all galleys, the left and right 

utility buses, and systems connected to the following circuit breakers (if installed):

Boeing Service Related Problem (SRP) 777-SRP-24-0091 is related to this service bulletin.

Revision 1 is sent to add airplanes WB406 and WB476 to Group 1 of this service bulletin effectivity.

Changes to this service bulletin include:-

— Paragraph 1.A., Effectivity, airplanes WB406 and WB476 were added.

— Paragraph 1.H., Weight and Balance, weight and balance figures were corrected.

— Paragraph 2.A., Material - Price and Availability, the unit price of kit 005W3198-1 has been 

updated.

— Paragraph 2.C., Parts Necessary for Each Airplane, part numbers in wire kit 280W5111 were 

corrected.

The data given in Information Notice 777-24-0074 IN 01 is included in this revision.

The data given in Information Notice 777-24-0074 IN 02 is included in this revision.

D. Description

The electrical system control panel is removed. The airplane wiring is changed to install 8 new wires 

and remove 2 wires between the P5 panel and the P61 overhead panel card file. A new electrical 

system control panel, with the two new cabin power control switches, is installed. A test of the new 

cabin power switches is done.

Revision 1 - No more work is necessary on airplanes changed as shown in the initial release of this 

service bulletin.

E. Compliance

No compliance time is given.

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.

Circuit 

Breaker

Panel and 

Position

Nomenclature

C21308 P210, A010 BULK CGO VENT FAN

C21330 P110, F023 FWD CGO EXHAUST FAN

C33486 P210, E009 RED ANTI-COLL LTS
 

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BOEING SERVICE BULLETIN 777-24-0074

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.

The change to the electrical system control panel as given in Component Service Bulletin 233W3202-

24-04 is not included.

H. Weight and Balance Changes

I. Electrical Load Data

Not changed.

J. References

1. Existing Data:

a. Engineering Change Memo PRR61887.

b. Service Related Problem (SRP) 777-SRP-24-0091.

c. 777 Maintenance Manual (AMM) Subject 24-22-00, 24-22-01, 33-13-00, 33-16-00.

d. 777 Wiring Diagram 23-93-21, 24-51-24, 24-51-41.

Task

Number of 

Persons Task-Hours Elapsed Hours

Open Access 1 0.25 0.25

Change 1 4.00 4.00

Close Access 1 0.25 0.25

Test 1 0.50 0.50

TOTAL FOR EACH AIRPLANE 5.00 5.00

Airplane

Change in Weight 

(Pounds)

Change in Moment 

(Pound-Inches)

777-200 +1.0 +200.0

777-300 +1.0 -10.0
 

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BOEING SERVICE BULLETIN 777-24-0074

e. Boeing Standard Wiring Practices Manual (BSWPM) 20-10-11, 20-10-12, 20-10-19.

f. Boeing Service Bulletin 777-24-0070.

g. Boeing Component Service Bulletin 233W3202-24-04.

2. Data supplied with this Service Bulletin:

None.

3. Installation Drawings Used in the Preparation of this Service Bulletin:

This drawing was used to prepare this service bulletin. This drawing is not necessary to make 

the specified changes, and is not supplied with this service bulletin. This drawing may not be 

applicable to all airplane configurations or operators.

K. Publications Affected

L. Interchangeability and Intermixability of Parts

Refer to Paragraph 2.C., Parts Necessary For Each Airplane, for interchangeability and intermixability 

information.

Drawing Number Title

288W9005 Wire Bundle Installation, Overhead Panels, P11, P5, P61

Publication Chapter-Section

777 Operations Manual 6.10, 6.20, 6.30, NNC.6

777 Maintenance Manual 24-22

777 Wiring Diagram Manual 23-93, 24-51

777 Illustrated Parts Catalog 24-22

777 Schematic Diagram Manual 23-93, 24-51
 

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BOEING SERVICE BULLETIN 777-24-0074

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BOEING SERVICE BULLETIN 777-24-0074

2. MATERIAL INFORMATION

A. Material - Price and Availability

Boeing can supply the kits shown in Paragraph 2.C., Parts Necessary For Each Airplane as shown 

below. Kits/Parts availability is shown in the Reorder Lead Time (ROLT). ROLT is calculated from 

the date Boeing gets the purchase order.

The kits/parts are subject to the terms and conditions of the Boeing standard purchase order 

acknowledgment. After the Unit Price date, new price and ROLT data is applicable. Prices are in 

United States dollars. Terms: Net 30 days.

Reference this service bulletin and submit your purchase order by one of the methods that follow: 

1. Order on-line via ATA Spec 2000 or Boeing Part Page

2. Fax to (206) 662-7145

3. Spares Customer Support - MC 36-65

Boeing Spares Department

P.O. Box 3707

Seattle, Washington 98124-2207 USA

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:

To get the kits/parts shown below, refer to Paragraph 2.A., Material - Price and Availability.

Note: One top kit is necessary for each airplane.

Kit Number Name

ROLT 

(Weeks)

Unit Price thru

JAN 31/06

005W3198-1 Top Kit 23 $751.00

Kit 005W3198

New Part 

Number

QTY

Name

Existing Part 

-1 Number Notes

005W3198-1 - Top Kit - (a)

280W5111-1 1 Wire Kit - (a)

BACS38K1B 20 Strap - -

BACS38K2B 10 Strap - -

(a) There are more parts than are necessary.
 

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BOEING SERVICE BULLETIN 777-24-0074

2. Parts and Materials Supplied by the Operator:

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.

4. Parts Removed and Not Replaced:

None.

D. Parts Necessary to Change Spares

None.

E. Special Tooling - Price and Availability

None.

Kit 280W5111

New Part 

Number

QTY

Name

Existing Part 

-1 -101 -201 Number Notes

280W5111-1 - Wire Kit - -

280W5111-101 1 - - Kit, W1052 - -

280W5111-101W - 1 - Wire - -

280W5111-10101 - 1 - Tie Wrap - -

280W5111-10102 - 1 - Identification Tape - -

280W5111-10103 - 1 - Identification Tape - -

280W5111-201 1 - - Kit, Standard - (a)

BACC47CP1S - 8 2 Contact - -

CTA0165 - 6 1 Contact - (b)

S280W555-920 - 2 1 Contact - -

318-01-99-036 - 6 1 Contact - (b)

(a) There are more parts than are necessary.

(b) 318-01-99-036 optional to CTA0165

Existing Part 

Number QTY Name New Part Number Notes

233W3202-6 or 

233W3202-7

1 Electrical Power 

Control Panel

233W3202-19 or 

233W3202-18

(a) (b)

(a) Make the change given in component service bulletin 233W3202-24-04.

(b) This part is used in production.
 

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BOEING SERVICE BULLETIN 777-24-0074

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.
 

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BOEING SERVICE BULLETIN 777-24-0074

BLANK PAGE
 

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BOEING SERVICE BULLETIN 777-24-0074

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. Unless shown differently, these dimensions and tolerances are used:

— Linear dimensions are in inches

— Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or 

minus 0.03 inch.

— Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch

— Angular tolerance is plus or minus 2 degrees

— Hole dimensions for standard solid rivets are given in 777 Structural Repair Manual, 

Chapter 51

— Torque limits to tighten nuts and bolts are given in 777 Structural Repair Manual, 

Chapter 51.

4. For approved fastener and process material substitutions, refer to 777 Structural Repair 

Manual, Chapter 51, Alternate fasteners are given in 777 Structural Repair Manual 

Chapter 51 and Boeing Drawing 012W6100.

5. Refer to the Boeing Standard Wiring Practices Manuals 20-10-11, 20-10-12 and 20-10-19 

for the wire installation procedures.

6. If the length of fasteners specified in this service bulletin do not meet the installation 

standards, fasteners of the same specification, or an approved substitute, one grip length 

longer or shorter may be used.

B. WORK INSTRUCTIONS

1. Remove the electrical power from the airplane. Refer to the 777 AMM 24-22-00, Remove 

Electrical Power, for the recommended procedures.

2. Remove the electrical power control panel. Refer to the 777 AMM 24-22-01, Electrical Module 

Assembly Removal, for the recommended procedures.

3. Make a change to the airplane wiring as specified in Figures 1 and 2.

4. Install a new electrical power control panel 233W3202-18 or 233W3202-19. Refer to the 777 

AMM 24-22-01, Electrical Module Assembly Installation, for the recommended procedures.

Note: The removed electrical power control panel can be changed to the new part as specified 
 

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BOEING SERVICE BULLETIN 777-24-0074

in the Component Service Bulletin 233W3202-24-04.

5. Do the Master Dim and Test - Operational Test, and the Integral Panel Lights - Operational Test 

for the electrical power control panel. Refer to the 777 AMM 33-16-00 for the Master Dim and 

Test - Operational Test, and the 777 AMM 33-13-00 for the Integral Panel Lights - Operational 

Test.

6. Do this test of the new cabin power switches:

a. Select the IFE/PASS SEATS switch to OFF.

b. See that the bottom part of the switch is lit.

c. See that all video entertainment players and audio entertainment players are off.

d. See that all video monitors and projectors are off.

e. Select the IFE/PASS SEATS switch to ON.

f. See that the top part of the switch is lit.

g. Select the CABIN/UTILITY switch to OFF.

h. See that the bottom part of the switch is lit.

i. On the EICAS, select the Electrical Maintenance page 2/2. See that the UTIL L/R bus is not 

powered.

j. See that no electrical power is available in any of the galleys.

k. Select the CABIN/UTILITY switch to ON.

l. See that the top part of the switch is lit.

m. On the EICAS, select the Electrical Maintenance page 2/2. See that the UTIL L/R bus is ON.

Note: Depending on the load shed configuration, it can take up to two minutes for the utility 

bus to come on line.

n. See that electrical power is available in all of the galleys.

7. Put the airplane back to a serviceable condition.
 FIGURE 1: INSTALL THE NEW WIRES

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BOEING SERVICE BULLETIN 777-24-0074

FIGURE 1: INSTALL THE NEW WIRES

FLIGHT COMPARTMENT

SEE A

UP

FWD

V78077

A

1

(SHEET 1 OF 2)
 FIGURE 1: INSTALL THE NEW WIRES

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BOEING SERVICE BULLETIN 777-24-0074

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.-

STEP TASK NAME PART NUMBER QTY NOTES

1

Install Wire 280W5111-101W - Use the straps as 

necessary. Wire bundle 

W1052 has a separation 

color of brown and a 

separation category of 

RM2. Refer to the 

BSWPM 20-10-19 for 

the necessary wire 

routing procedures.

Use: Strap BACS38K1B -

Strap BACS38K2B -

(SHEET 2 OF 2)
 FIGURE 2: CHANGE THE AIRPLANE WIRING

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BOEING SERVICE BULLETIN 777-24-0074

FIGURE 2: CHANGE THE AIRPLANE WIRING

The flag note numbers shown below agree with the numbers shown in the flag symbols in the figure.

FLAG 

NOTE NAME PART NUMBER QTY NOTES

1 Contact BACC47CP1S 8

2 Contact 318-01-99-036 or 

CTA0165

6

3 Contact S280W555-920 2

4 ID Tape 280W5111-10102 1

5 ID Tape 280W5111-10103 1

PANEL

M24023 ELECTRICAL

P5 OVERHEAD PANEL

M23217 RIGHT OPCF

DM24023B

DM23217G

REFERENCE: 777 WIRING DIAGRAM 23-93-21, 24-51-24 AND 24-51-41

5

4

3

1 2

3

W1052-0938-24

W1052-0933-24

W1052-0152-24

W1052-0150-24

W1052-0151-24

W1052-0149-24

W1052-0145-24

W1052-0147-24

W1052-0148-24

W1052-0146-24

52

50

51

49

45

47

48

46

A3

A1

A2

A20

A18

A19

A20

A18

A3

A1

GB502-DC

GB502-DC

(8 LOCATIONS) (6 LOCATIONS)

P61 MAINTENANCE PANEL

V78136

ADDED WIRE OR NEW ROUTING

DELETED WIRE OR FORMER ROUTING

(SHEET 1 OF 1)