February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 16

Commercial

Airplane

Group 767

Service Bulletin

Number: 767-23-0167

Date: February 28, 2002

ATA System: 2342

RCC

SUBJECT: COMMUNICATIONS - Cabin Interphone System - Audio Accessory Unit Replacement

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Unpublished Work - All Rights Reserved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.
 BLANK PAGE

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 2 of 16

BOEING SERVICE BULLETIN 767-23-0167

BLANK PAGE
February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 3 of 16

Commercial

Airplane

Group 767

Service Bulletin

Number: 767-23-0167 Summary

Date: February 28, 2002

ATA System: 2342

RCC

SUBJECT: COMMUNICATIONS - Cabin Interphone System - Audio Accessory Unit Replacement

CONCURRENT REQUIREMENTS

The related Boeing Component Service Bulletin is 285T0001-23-10.

BACKGROUND

The pulsed output of the audio accessory unit (AAU) can be used to drive multiple chimes directly into the aural 

warning bell chime. However, the 100 ms pulsed output of the AAU 285T0001-205 and 285T0001-206 is not 

enough to drive multiple chimes into the aural warning bell chime.

The service bulletin installs AAU 285T0001-210 or 285T0001-211 which has a pulsed output of 200 ms. The 

new AAU is capable to drive multiple chimes directly into aural warning bell chime. This change can give the 

crew the capability to identify the type of cabin to flight deck calls. 

ACTION ( PRRB13382)

On the E2-5 shelf, replace the audio accessory unit. Do a test of the audio accessory unit.

EFFECTIVITY

All 767-300 airplanes line numbers 794 thru 846 with AAU 285T0001-205 or 285T0001-206 installed in 

production or by Boeing Service Bulletin 767-23-0160.

COMPLIANCE

No compliance time is given.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are available for airplanes in warranty as of March 26, 2001. Please refer to 

Paragraph 2.B., Industry Support Information.
 

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 4 of 16

BOEING SERVICE BULLETIN 767-23-0167

MANPOWER

The change to the audio accessory unit as given in the component service bulletin is not included.

MATERIAL INFORMATION

Operator Supplied Parts

Total Elapsed Time

Man-Hours (Hours)

1.5 1.5

MAIN EQUIPMENT CENTER

ACCESSORY UNIT

REPLACE AUDIO

ON THE E2-5 SHELF,

FWD

V70487
February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 5 of 16

Commercial

Airplane

Group 767

Service Bulletin

Number: 767-23-0167

Date: February 28, 2002

ATA System: 2342

RCC

SUBJECT: COMMUNICATIONS - Cabin Interphone System - Audio Accessory Unit Replacement

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index Document D624T001, 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 PRRB13382 for data about this change.

Note: All 767-300 airplanes line numbers 794 thru 846 with AAU 285T0001-205 or 285T0001-

206 installed in production or by Boeing Service Bulletin 767-23-0160. 

Airplane models:

767-300

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER

AIR CANADA (ACN)

1 VS546–VS549

AIR NEW ZEALAND (ANZ)

1 VS113

AIR SEYCHELLES (ASY)

1 VS526

ASIANA AIRLINES (AAR)

1 VS231

BALAIR/CTA LEISURE LTD. (BCT)

1 VS506

CAMEROON AIRLINES (CAM)

1 VS308
 

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 6 of 16

BOEING SERVICE BULLETIN 767-23-0167

CHINA UNITED AIRLINES (CUL)

1 VS274

DELTA AIR LINES (DAL)

1 VS273 VS470–VS472

ETHIOPIAN AIRLINES (ETH)

1 VS507

QANTAS (QAN)

1 VS486

SKYMARK AIRLINES (SKM)

1 VS261

SOBELAIR (SBL)

1 VS497

UNITED AIRLINES (UAL)

1 VS102–VS103

IDENTIFICATION BY VARIABLE NUMBER

2. Spares Affected

Examine your spares supply for the parts identified in Paragraph 2.E., Existing Parts 

Accountability. If any parts are found, refer to Paragraph 2.E. for the recommended use.

B. Concurrent Requirements

The related Boeing Component Service Bulletin is 285T0001-23-10.

Variable Group

VS102–VS103 1

VS113 1

VS231 1

VS261 1

VS273–VS274 1

VS308 1

VS470–VS472 1

VS486 1

VS497 1

VS506–VS507 1

VS526 1

VS546–VS549 1
 

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7 of 16

BOEING SERVICE BULLETIN 767-23-0167

C. Reason

The pulsed output of the audio accessory unit (AAU) can be used to drive multiple chimes directly 

into the aural warning bell chime. However, the 100 ms pulsed output of the AAU 285T0001-205 

and 285T0001-206 is not enough to drive multiple chimes into the aural warning bell chime.

The service bulletin installs AAU 285T0001-210 or 285T0001-211 which has a pulsed output of 200 

ms. The new AAU is capable to drive multiple chimes directly into aural warning bell chime. This 

change can give the crew the capability to identify the type of cabin to flight deck calls. 

D. Description

On the E2-5 shelf, replace the audio accessory unit. Do a test of the audio accessory unit.

An evaluation form is attached to this service bulletin. Please use this form to tell us what you think 

of the quality 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 Federal Aviation Regulations (FAR) and 

are FAA approved. This service bulletin and the FAA approval were based on the airplane in its 

original Boeing delivery configuration or as modified by other FAA 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 man-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 

man-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.

Task Number of Persons Man-Hours Elapsed Time (Hours)

Open Access 1 0.50 0,50

Change 1 0.25 0.25

Close Access 1 0.50 0.50

Test 1 0.25 0.25

TOTAL FOR EACH AIRPLANE 1.50 1.50
 

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 8 of 16

BOEING SERVICE BULLETIN 767-23-0167

The change to the audio accessory unit as given in the Boeing Component Service Bulletin 

285T0001-23-10 is not included.

H. Weight and Balance Changes

None

I. Electrical Load Data

Not changed

J. References

1. Existing Data:

a. Engineering Change Memo PRRB13382

b. 767 Maintenance Manual (AMM) Subject 23-42-01

c. Boeing Service Bulletin 767-23-0160, "Communications - Audio Accessory Unit 

Replacement" 

d. Boeing Component Service Bulletin 285T0001-23-10, "Communications - Audio Accessory 

Unit Modification"

2. Data supplied with this Service Bulletin:

None

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

None

K. Publications Affected

L. Interchangeability and Intermixability of Parts

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

intermixability information.

Publication Chapter-Section

767 Operations Manual Chapter 5

767 Wiring Diagram Manual Equipment List

767 Maintenance Manual 23-42, 23-51
 

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 16

BOEING SERVICE BULLETIN 767-23-0167

2. MATERIAL INFORMATION

A. Material - Price and Availability

The operator can supply the parts and materials shown in Paragraph 2.C., Parts Necessary For each 

Airplane. Refer to Boeing Component Service Bulletin 285T0001-23-10.

B. Industry Support Information

Boeing warranty remedies are available for 767 airplanes in warranty as of March 26, 2001. For 

man-hour and material reimbursement for airplanes in warranty as of that date, send a warranty 

claim to Boeing Product Assurance Contracts.

C. Parts Necessary For Each Airplane

1. Kits:

None

2. Parts and Materials Supplied by the Operator:

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

Part Number / 

Specification QTY Name Notes

285T0001-210 1 Audio Accessory Unit (a) (c)

285T0001-211 1 Audio Accessory Unit (b) (c)

(a) For VS102-VS103, VS113, VS231, VS261, VS308, VS497, VS506-VS507, VS526,

 VS546-VS549.

(b) For VS273-VS274, VS470-VS491.

(c) See Paragraph 2.C.3 for interchangeability information.

Existing Part 

Number QTY Name New Part Number Notes

 285T0001-205 1 Audio Accessory Unit 285T0001-210 (a) (c)

 285T0001-206 1 Audio Accessory Unit 285T0001-211 (b) (c)

(a) For VS102-VS103, VS113, VS231, VS261, VS308, VS497, VS506-VS507, VS526,

 VS546-VS549.

(b) For VS273-VS274, VS470-VS491.

(c) Make the change given in Boeing Component Service Bulletin 285T0001-23-10.

 This part is used in production.

 Do not use the existing part to replace the new part.
 

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 10 of 16

BOEING SERVICE BULLETIN 767-23-0167

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.
 

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 11 of 16

BOEING SERVICE BULLETIN 767-23-0167

3. ACCOMPLISHMENT INSTRUCTIONS

A. GENERAL INFORMATION

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.

B. WORK INSTRUCTIONS

1. Open these circuit breakers and attach DO-NOT-CLOSE tags:

2. On the E2-5 shelf, replace the audio accessory unit as shown in Figure 1.

3. Remove DO-NOT-CLOSE tags and close these circuit breakers:

4. Do a test of the audio accessory unit as given in 767 AMM 23-42-01/401.

5. Put the airplane back to a serviceable condition.

Location Name

Panel Position

P11 C22 PASS ADRS

C23 INTERPHONE CABIN/SERVICE

C25 INTERPHONE FLT AMPL DUAL PWR CAPT

C26 INTERPHONE DUAL PWR F/O OBS

G29 INTERPHONE CAPT FLT AMPL DUAL PWR

G30 INTERPHONE F/O OBS DUAL PWR

Location Name

Panel Position

P11 C22 PASS ADRS

C23 INTERPHONE CABIN/SERVICE

C25 INTERPHONE FLT AMPL DUAL PWR CAPT

C26 INTERPHONE DUAL PWR F/O OBS

G29 INTERPHONE CAPT FLT AMPL DUAL PWR

G30 INTERPHONE F/O OBS DUAL PWR
FIGURE 1: E2-5 SHELF - AUDIO ACCESSORY UNIT REPLACEMENT

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 12 of 16

BOEING SERVICE BULLETIN 767-23-0167

FIGURE 1: E2-5 SHELF - AUDIO ACCESSORY UNIT REPLACEMENT

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

Note: See the 767 AMM 23-42-01/401 for the removal and installation procedure of the audio accessory unit.

STEP TASK NAME PART NUMBER QTY NOTES

1 Remove Audio Accessory Unit 285T0001-205 1 For VS102-VS103, VS113,

VS231, VS261, VS308, VS497,

VS506-VS507, VS526, VS546-

VS549 

285T0001-206 For VS273-VS274, VS470-

VS491

2 Install Audio Accessory Unit 285T0001-210 1 For VS102-VS103, VS113,

VS231, VS261, VS308, VS497,

VS506-VS507, VS526, VS546-

VS549 

285T0001-211 For VS273-VS274, VS470-

VS491

E2-5 SHELF

MAIN EQUIPMENT CENTER

FWD

1 2

V70488

(SHEET 1 OF 1)
 Table of Contents

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 13 of 16

BOEING SERVICE BULLETIN 767-23-0167

Table of Contents

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 8

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1. Kits: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . . 9

3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 10

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

A. GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

FIGURE 1: E2-5 SHELF - AUDIO ACCESSORY UNIT REPLACEMENT . . . . . . . . . . . . . . 12
 BLANK PAGE

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 14 of 16

BOEING SERVICE BULLETIN 767-23-0167

BLANK PAGE
February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 15 of 16

Commercial

Airplane

Group 767

Service Bulletin

Number: 767-23-0167 Evaluation Form

Date: February 28, 2002

ATA System: 2342

RCC

SUBJECT: COMMUNICATIONS - Cabin Interphone System - Audio Accessory Unit Replacement

Use this evaluation form to tell us what you think of the quality of this service bulletin. We will use the data that 

you give us to improve the quality of our service bulletins.

Note: Please do not use this evaluation form to tell us to make changes to your manuals. To make these 

changes, please use a Publication Change Request (PCR) form. 

Please give us this data: 

(If necessary, please use the other side. Thank you for the time you used to give us your comments.)

OPERATOR: ______________________________________ TODAY’S DATE:_______________________

PREPARED BY: ___________________________________ TITLE: ______________________________

ORGANIZATION: __________________________________ TELEX CODE: ________________________

TELEPHONE NUMBER: _____________________________ BASE: ______________________________

Please rate the quality of this service bulletin: (good) 4 3 2 1 (poor)

Please rate the quality of the illustrations: (good) 4 3 2 1 (poor)

Will you do the change given by this service bulletin? Yes___ No___ If not, please explain:

Is this service bulletin easy to understand? Yes___ No___ If not, please explain:

Is this service bulletin easy to use? Yes___ No___ If not, please explain:

Are the Planning Information, Material Information, and

Accomplishment Instructions accurate? Yes___ No___ If not, please explain:

Is the Manpower estimate accurate? Yes___ No___ If not, please explain:

Give the completed evaluation form to your Boeing Field Service Representative or send the evaluation form 

directly to this address:

Manager, Service Bulletin Engineering

Boeing Commercial Airplanes Group

P.O. Box 3707, Mail Code 2H-36

Seattle, WA 98124-2207
 

February 28, 2002

767-23-0167

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 16 of 16

BOEING SERVICE BULLETIN 767-23-0167