February 28, 2002 767-23-0167 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 16 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## BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2002 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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document unless provided in writing by Boeing.BLANK PAGE February 28, 2002 767-23-0167 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 2 of 16 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BLANK PAGEFebruary 28, 2002 767-23-0167 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 3 of 16 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,

FWDV70487February 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 VS308February 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 1February 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 1.50February 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, 23-51February 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 PWRFIGURE 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 2 1V70488

(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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 FIGURE 1: E2-5 SHELF - AUDIO ACCESSORY UNIT REPLACEMENT . . . . . . . . . . . . . . 12BLANK 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 PAGEFebruary 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 98124-2207February 28, 2002 767-23-0167 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 16 of 16 

### BOEING SERVICE BULLETIN 767-23-0167