Commercial

Airplane

Group

767

Service Bulletin

Number: 767-31-0073 Summary Date: October 12, 1995

ATA System: 3141

SUBJECT: INDICATING/RECORDING SYSTEMS - CENTRAL COMPUTERS - INFLIGHT EICAS

MAINTENANCE DATA SELECTION SYSTEM INSTALLATION

BACKGROUND

The change given in this service bulletin will let the

EICAS maintenance messages to be shown when

the airplane is at or above 10,000 feet.

Currently EICAS maintenance messages can be

shown only when the airplane is on the ground.

This modification will let the EICAS maintenance

messages be selected for display when the airplane

is at or above 10,000 feet.

As part of a service bulletin validation program, this

change was completed on airplane VL754 before

the release of the service bulletin. Airplane VL754

has the configuration of a Group 4 airplane.

ACTION (PRR B12654)

- On Groups 1-3 and 6-8 airplanes: install EICAS

enable bypass switch E8 E rack.

- Install the altitude pressure switch and pressure

tubing on E8 rack.

- Make a modification to the EICAS maintenance

system wiring.

COMPLIANCE

No compliance time is given.

EFFECTIVITY

All 767 airplanes line positions 1 -579, 581-589, 591,

592.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are not available for the

configuration changes given in this service bulletin.

MANPOWER

Airplanes

Total

Man-hours

Elapsed Time

(Hours)

Groups 1-3 12 10.5

Group 4 9 7.5

Group 5 11 9.5

Groups 6-8 13 11.5

Groups 9-10 9.5 8

MATERIAL INFORMATION

Boeing Supplied Kits

Refer to Paragraph I.H., Material - Price and

Availability.

BOEING COMMERCIAL AIRPLANE GROUP P.O. BOX 3707 SEATTLE, WASHINGTON 98124-2207 Summary Page 1 of 2
BOEING SERVICE BULLETIN 767-31-0073

A WIRING MODIFICATION

ON GROUPS 1-3, 5 AND

ON GROUPS 1-3,5

P37 PANEL

MODIFICATION IN

MAKE A WIRING

AND 6-8 AIRPLANES

IN E8 RACK

MAKE WIRING MODIFICATION

INSTALL EICAS ENABLE BYPASS SWITCH

ON GROUPS 1-3 AND 6-8 AIRPLANES

TUBE ASSEMBLY

PRESSURE SWITCH AND

INSTALL ALTITUDE

266.5

STA

6-8 AIRPLANES MAKE

FWD

MAIN EQUIPMENT CENTER

FWD

UP

INBD

R41393

Oct 12/95

Summary Page 2 of 2
Commercial

Airplane

Group

767

Service Bulletin

Number: 767-31-0073

Date: October 12, 1995

ATA System: 3141

SUBJECT: INDICATING/RECORDING SYSTEMS - CENTRAL COMPUTERS - INFLIGHT EICAS

MAINTENANCE DATA SELECTION SYSTEM INSTALLATION

I. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index Document D6-24T001, 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 B12654 for data about this change.

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER

AEROFLOT (ARO)

1 VN561-VN562

AEROMEXICO (AMX)

1 VN556-VN557

AIR ALGERIE (ALG)

7 VK131-VK133

AIR CANADA (ACN)

4 VN931

6 VA701-VA712 VB001-VB002 VB201-VB202

7 VA713-VA719

AIR CHINA GROUP (BEJ)

6 VE064-VE065

7 VE083-VE086 VK161-VK164

AIR EUROPE ITALY SPA (EIY)

1 VN551

4 VN682 VN811-VN812 VN972

AIR FRANCE (AFA)

1 VF101-VF102 VN631 VN632 VN633-VN638

2 VF101

AIR MAURITIUS LTD. (MAU)

3 VF001-VF002

Oct 12/95 767-31-0073

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BOEING SERVICE BULLETIN 767-31-0073

AIR NEW ZEALAND, LTD. (ANZ)

1 VN651-VN656

6 VB323-VB324 VE101-VE103

AIR PACIFIC (APC)

1 VN676

AIR SEYCHELLES LTD. (ASY)

3 VF051

AIR UK (LEISURE) (UKL)

5 VN921-VN922

AIR ZIMBABWE (ZMB)

1 VF061-VF062

AIRTOURS INT'L AVIATION (GUERNSEY) LTD. (GUE)

1 VN951-VN952

ALITALIA (ALI)

1 VN422-VN423 VN425

ALL NIPPON AIRWAYS CO. LTD. (ANA)

1 VN191-VN196

6 VB101-VB121

7 VB122-VB125 VK081-VK112

AMERICAN AIRLINES, INC. (AAL)

1 VN001-VN041

6 VA501-VA515

7 VA516-VA530

ANSETT AUSTRALIA (ANS)

6 VB051-VB055 VB322

ANSETT WORLDWIDE AVIATION SERVICES (AWW)

1 VF092 VN385

ASIANA AIRLINES (AAR)

1 VN546-VN547

3 VL703 VN751-VN753

7 VK141-VK144

AVIANCA (AVI)

4 VN152

7 VE171-VE172

BIRGENAIR (BIR)

6 VE041

BOEING (TBC)

6 VA001

BOULLIOUN AVIATION SERVICES (BOU)

1 VN424

Oct 12/95 767-31-0073

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BOEING SERVICE BULLETIN 767-31-0073

BRITANNIA AIRWAYS, INC. (BRI)

6 VB321

7 VB325-VB332

BRITISH AIRWAYS (BAB)

1 VN111-VN127 VN130-VN135

CANADIAN AIRLINES INTERNATIONAL LTD. (CDI)

1 VN051-VN061

CHINA SOUTHERN AIR GROUP (GUN)

1 VN062-VN064

3 VL701-VL702

4 VN813

CONDOR/CARGO TECHNIK GMBH (CDF)

4 VN683-VN691

DELTA AIR LINES, INC. (DAL)

4 VN251-VN266

9 VA301-VA315 VK031-VK056

10 VK032-VK056

EGYPTAIR (EGP)

1 VN211-VN212

6 VE021-VE023

EL AL ISRAEL AIRLINES, LTD. (ELA)

6 VB281-VB284

ETHIOPIAN AIRLINES, CORP. (ETH)

6 VE001-VE002

7 VE003

EVA AIRWAYS CORPORATION (EVA)

1 VN791-VN792

4 VN471-VN472 VN731

7 VB441-VB444

GE CAPITAL AVIATION SERVICES, INC. (GEH)

4 VL751-VL753

GPA GROUP LTD. (GUI)

1 VF161

GULF AIR (GUL)

1 VL003-VL006 VN301-VN314

ITOCHU CORPORATION (CIT)

4 VF181-VF182

JAPAN AIRLINES (JAL)

6 VB371-VB373 VK001

7 VK002-VK015 VK021-VK022

KLM ROYAL DUTCH AIRLINES (KLM)

4 VL891-VL893

Oct 12/95 767-31-0073

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BOEING SERVICE BULLETIN 767-31-0073

LAN-CHILE S.A. (LAN)

1 VF091 VF093 VN376 VN531 VN971

8 VE118

LAUDA AIR LUFTFAHRT AG (LAL)

1 VL011 VN242-VN243 VN388

LAUDA AIR S.P.A. (LDI)

4 VN671

LINHAS AEREAS DE MOZAMBIQUE (LAM)

1 VF162

LOT POLISH AIRLINES (LOT)

1 VN291-VN292

3 VF041-VF042

LUFTTRANSPORT SUED AG AND CO. (LTS)

1 VN171-VN173 VN381

MALEV HUNGARIAN AIRLINES (HGA)

3 VF171-VF172

MARTINAIR HOLLAND N.V. (MTH)

4 VN221-VN224 VN672

QANTAS AIRWAYS, LTD. (QAN)

1 VN081-VN095

6 VE061-VE063 VE066-VE068

7 VE069

ROYAL BRUNEI (RBA)

1 VN371-VN372 VN382-VN384 VN386-VN387

SCANDINAVIAN AIRLINES SYSTEM (SAS)

4 VF071 VN151 VN153-VN158 VN163-VN168

SHANGHAI AIRLINES, P.R.C. (SHA)

7 VK171

SOBELAIR (SBL)

1 VN421

SPANAIR (SPP)

1 VN541-VN542

TACA INTERNATIONAL AIRLINES, INC. (TAC)

4 VN732

8 VE116

THE AMEDEO CORPORATION (BRX)

3 VF180

TRANS WORLD AIRLINES, INC. (TWA)

1 VN536-VN537

4 VN681

6 VB301-VB302

9 VA801-VA810

Oct 12/95 767-31-0073

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BOEING SERVICE BULLETIN 767-31-0073

TRANSBRASIL AIRLINES INC. (TBL)

1 VL001-VL002 VN532

4 VF072

6 VB251-VB253 VE104

8 VE117

UNITED AIR LINES, INC. (UAL)

1 VN491-VN513

6 VA002-VA020

USAIR, INC. (USA)

8 VE141-VE152

VARIG AIRLINES (VAR)

1 VN231-VN234

8 VE121-VE126

IDENTIFICATION BY VARIABLE NUMBER

GROUP 1

VF061-VF062 VF091-VF093 VF101-VF102 VF161-VF162 VL001-VL006 VL011

VN001-VN041 VN051-VN064 VN081-VN095 VN111-VN127 VN130-VN135 VN171-VN173

VN191-VN196 VN211-VN212 VN231-VN234 VN241-VN243 VN291-VN292 VN301-VN314

VN371-VN372 VN376 VN381-VN388 VN421-VN425 VN491-VN513 VN531-VN532

VN536-VN537 VN541-VN542 VN546-VN547 VN551 VN556-VN557 VN561-VN562

VN631-VN638 VN651-VN656 VN676 VN791-VN792 VN951-VN952 VN971

GROUP 2

VF101

GROUP 3

VF001-VF002 VF041-VF042 VF051 VF171-VF172 VF180 VL701-VL703

VN751-VN753

GROUP 4

VF071-VF072 VF181-VF182 VL751-VL753 VL891-VL893 VN151-VN158 VN163-VN168

VN221-VN224 VN251-VN266 VN471-VN472 VN671-VN672 VN681-VN691 VN731-VN732

VN811-VN813 VN931 VN972

GROUP 5

VN921-VN922

GROUP 6

VA001-VA020 VA501-VA515 VA701-VA712 VB001-VB002 VB051-VB055 VB101-VB121

VB201-VB202 VB251-VB253 VB281-VB284 VB301-VB302 VB321-VB324 VB371-VB373

VE001-VE002 VE021-VE023 VE041-VE043 VE061-VE068 VE101-VE104 VK001

GROUP 7

VA516-VA530 VA713-VA719 VB122-VB125 VB325-VB332 VB441-VB444 VE003

VE069 VE083-VE086 VE171-VE172 VK002-VK015 VK021-VK022 VK081-VK112

VK131-VK133 VK141-VK144 VK161-VK164 VK171

GROUP 8

VB401 VE116-VE118 VE121-VE126 VE141-VE152

GROUP 9

VA301-VA315 VA801-VA810 VK031-VK056

Oct 12/95 767-31-0073

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BOEING SERVICE BULLETIN 767-31-0073

GROUP 10

VK032-VK056

2. Spares

None

Oct 12/95 767-31-0073

6
BOEING SERVICE BULLETIN 767-31-0073

B. Reason

The change given in this service bulletin will let the EICAS maintenance messages to be shown when

the airplane is at or above 10,000 feet.

Currently EICAS maintenance messages can be shown only when the airplane is on the ground.

This modification will let the EICAS maintenance messages be selected for display when the

airplane is at or above 10,000 feet.

As part of a service bulletin validation program, this change was completed on airplane VL754 before

the release of the service bulletin. Airplane VL754 has the configuration of a Group 4 airplane.

C. Description

- On Groups 1-3 and 6-8 airplanes: EICAS enable bypass switch is installed on E8 E rack.

- Altitude pressure switch and pressure tubing are installed on E8 rack.

- A wiring modification is made to the EICAS maintenance system.

The airplane effectivity is divided in 10 groups because of differences in EICAS rack, EICAS enable

bypass switch, pressure tubing and wiring configurations.

The changes in this service bulletin will not change the Engine Indication and Crew Alerting System

(EICAS) other than enabling in flight display of maintenance pages.

D. Compliance

No compliance time is given.

E. 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.

F. Industry Support Information

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

bulletin.

Oct 12/95 767-31-0073

7
BOEING SERVICE BULLETIN 767-31-0073

G. Manpower

The data below shows an estimate of the man-hours necessary to do this modification 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.

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

Groups 1-3

Open Access 1 0.5 0.5

Change 1 8 8

Close Access 1 0.5 0.5

Test 2 3 1.5

TOTAL FOR EACH AIRPLANE 12 10.5

Groups 4

Change 1 6 6

Test 2 3 1.5

TOTAL FOR EACH AIRPLANE 9 7.5

Group 5

Open Access 1 0.5 0.5

Change 1 7 7

Close Access 1 0.5 0.5

Test 2 3 1.5

TOTAL FOR EACH AIRPLANE 11 9.5

Groups 6-8

Open Access 1 0.5 0.5

Change 1 9 9

Close Access 1 0.5 0.5

Test 2 3 1.5

TOTAL FOR EACH AIRPLANE 13 11.5

Groups 9-10

Change 1 6.5 6.5

Test 2 3 1.5

TOTAL FOR EACH AIRPLANE 9.5 8

Oct 12/95 767-31-0073

8
BOEING SERVICE BULLETIN 767-31-0073

H. Material - Price and Availability

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

below. Kit availability is shown in the Reorder Lead Time (ROLT). ROLT is calculated from the date

Boeing gets the purchase order.

Kit Number Name

ROLT

(weeks)

Unit Price thru

Jun 12/96

015T1461-1 Top Kit (Groups 1 and 2 airplanes) 38 $ 2,799.00

015T1461-2 Top Kit (Group 3 airplanes) 38 $ 2,718.00

015T1461-3 Top Kit (Group 4 airplanes) 38 $ 2,366.00

015T1461-4 Top Kit (Group 5 airplanes) 38 $ 2,523.00

015T1461-5 Top Kit (Groups 6 and 7 airplanes) 28 $3,535.00

015T1461-6 Top Kit (Group 8 airplanes) 28 $ 3,453.00

015T1461-7 Top Kit (Groups 9 and 10 airplanes) 28 $ 3,101.00

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

acknowledgment. After the Price date, new price data is applicable. Prices are in United States

Dollars. Terms: Net 30 days.

I. Special Tools - Price and Availability

None

J. Weight and Balance

Airplane Change in Weight

(Pounds)

Change in Moment

(Pound-Inches)

767-200 767-300

Groups 1-2 +2.0 +532.0 +290.0

Group 3 +1.8 +478.8 +261.0

Group 4 +1.5 +399.0 +217.5

Group 5 +1.9 - +275.5

Groups 6 and 7 +4.0 +1064.0 +580.0

Group 8 +3.8 +1010.8 -

Groups 9 and 10 +3.5 +931.0 +507.5

Oct 12/95 767-31-0073

9
BOEING SERVICE BULLETIN 767-31-0073

K. References

1. Existing Data:

a. Engineering Change Memo PRR B12654

b. 767 Maintenance Manual (AMM) Subjects 25-52-02, 31-41-02, 34-11-00

c. 767 Structure Repair Manual (SRM) Subject 51-70-16

d. 767 Wiring Diagram 31-41-13

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

f. Boeing Standard Overhaul Practices Manual (BSOPM) 20-50-02

2. Data supplied with this service bulletin:

None

L. Publications Changed

Publication Chapter-Section

767 Maintenance Manual 31-41

767 Wiring Diagram Manual 31-41

767 Ramp Maintenance Manual 31-01, 31-31

767 Illustrated Parts Catalog 31-41

M. Electrical Load Data

Not changed

Oct 12/95 767-31-0073

10
BOEING SERVICE BULLETIN 767-31-0073

II. MATERIAL INFORMATION

A. Parts Necessary For Each Airplane

1. Kits:

To get the kits shown below, refer to Paragraph I.H., Material - Price and Availability.

NOTE: One top kit and the items shown in Paragraph II.A.2., Parts and Materials Supplied by the

Operator, are necessary for each airplane.

015T1461 - TOP KIT, INFLIGHT ACTIVATION OF EICAS MAINTENANCE MESSAGE

SYSTEM

-1 -2 -3 -4 -5 -6

Quantity Part Number Name

- . . . . . 015T1461-1 Top Kit (Groups 1 and 2 airplanes)

. - . . . . 015T1461-2 Top Kit (Group 3 airplanes)

. . - . . . 015T1461-3 Top Kit (Group 4 airplanes)

. . . - . . 015T1461-4 Top Kit (Group 5 airplanes)

- . . . - . 015T1461-5 Top Kit (Groups 6 and 7 airplanes)

. -...- 015T1461-6 Top Kit (Group 8 airplanes)

1 1 . . 1 1 015T1461-8 Kit, EICAS Maint Enable Bypass Switch

Installation

1 1 1 1 1 1 015T1461-9 (a) Kit, Wire Installation

1 1 1 1 . . 233T0044-1 Kit, EICAS Pressure Switch Installation

. . . . 1 1 233T0044-2 Kit, EICAS Pressure Switch Installation

1 . . 1 1 . 289T0341-2 Wire Kit

. . 1 . . . 289T0341-1 Wire Kit

. 1 . . . 1 289T0341-3 Wire Kit

015T1461 - (CONTINUED)

-7 -8 -9

Quantity Part Number Name

- . . 015T1461-7 Top Kit (Groups 9 and 10 airplanes)

. - . 015T1461-8 Kit, EICAS Maint Enable Bypass

Switch Installation

1 . - 015T1461-9 (a) Kit, Wire Installation

1 . . 233T0044-2 Kit, EICAS Pressure Switch Installation

1 . . 289T0341-1 Wire Kit

. 1 . 284T1038-4 Bracket Assembly

. 1 . 405-112 Switch Guard

. 1 . BAC27TEX2962 Marker

. 1 . BAC27TEX3095 Marker

. 3 . BACN10TL3-4 Nutplate

. 2 . BACR15BB4AD5 Rivet

Oct 12/95 767-31-0073

11
BOEING SERVICE BULLETIN 767-31-0073

(Continued)

015T1461 - (CONTINUED)

-7 -8 -9

Quantity Part Number Name

. 2 . BACR15FT5AD4 Rivet

. 1 . ITL187-3 Switch

. 4 . NAS1398D4-3 Rivet

. . 6 BACC10DK2 Clamp

. . 6 NAS1149D0332J Washer

. . 6 NAS1801-3-7 Screw

. . 1 BACN10GH3-6 Nutplate

. . 1 BACN10TL3-3 Nutplate

. . 5 BACR15BA3AD3 Rivet

. . 1 NAS42DD-6-80 Spacer

. . 1 NAS1801-3-26 Screw

. . 3 BACR15DR3P2 Rivet

. . 3 BACP20BA1 Filler

. . 1 1QM1-3-54A Quick Disconnect

233T0044 - KIT, EICAS PRESSURE SWITCH INSTALLATION

-1 -2

Quantity Part Number Name

- . 233T0044-1 Kit, EICAS Pressure Switch Installation

. - 233T0044-2 (a) Kit, EICAS Pressure Switch Installation

1 . 233T9110-1162 Tube Assembly

. 1 233T9110-1072 Tube Assembly

. 1 233T9110-1073 Tube Assembly

. 1 233T9110-1074 Tube Assembly

. 1 233T9110-1075 Tube Assembly

. 1 233T9110-37 Drain Assembly

1 1 233T9118-105 Bracket Assembly

. 3 287T0012-3 Attach Assembly

. 1 BACC10DK10 Clamp

6 BACC10DK6 Clamp

1 1 BACH30BC06-0110 Hose Assembly

4 4 BACR15FT6AD5 Rivet

. 3 BACS12GU3-12 Screw

. 4 BACS12GU3-40 Screw

1 1 BACT16AY060606W Swivel Tee

1 1 BAC27TFDE534 Marker

. 1 MS21905W6 Tee Assembly

Oct 12/95 767-31-0073

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BOEING SERVICE BULLETIN 767-31-0073

(Continued)

233T0044 - KIT, EICAS PRESSURE SWITCH INSTALLATION

-1 -2

Quantity Part Number Name

. 11 NAS1149D0332J Washer

. 4 NAS43DD3-45FC Spacer

1 1 1QF2-3-64A Quick Disconnect

1 1 123-2222F Clamp

1 1 6502-10K Pressure Switch

233T9110 - KIT, DRAIN ASSEMBLY

-37

Quantity Part Number Name

- 233T9110-37 Kit, Drain Assembly

1 MS28778-6 O-Ring

1 1QF2-3-64A Quick Disconnect

1 1QM1-3-69A Quick Disconnect

1 50017A43-6-0070 Hose Assembly Drain

287T0012 - KIT, STRINGER ATTACH ASSEMBLY

-3

Quantity Part Number Name

- 287T0012-3 Kit, Stringer Attach Assembly

1 287T0012-1 Support Attachment

2 287T0012-2 Strap

Oct 12/95 767-31-0073

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BOEING SERVICE BULLETIN 767-31-0073

289T0341 - WIRE KIT

-1 -2 -3 -101 -102 -103

Quantity Part Number Name

- . . . . . 289T0341-1 Subkit, Wire

. - . . . . 289T0341-2 Subkit, Wire

. . - . . . 289T0341-3 Subkit, Wire

. 1 1 - . . 289T0341-101 Kit, Wire (W0192)

. 1 . . - . 289T0341-102 Kit, Wire (W0764)

1 1 1 . . - 289T0341-103 Kit, Wire (W2006)

1 1 1 . . . 289T0341-104 (b) Lacing Tape (white)

1 1 1 . . . 289T0341-105 (c) Lacing Tape (green)

4 4 4 . . . BACS18AR6 Burndy Spacer

. . . 1 . . 289T0341-101W Wire

....1. 289T0341-102W Wire

.... .1 289T0341-103W Wire

. . . 3 2 BACC47CN1A Pin Contact

. . . .25 BACC47CP1A Socket Contact

. . . 1 . . BACC47ER1 Relay Socket Contact

.... .1 BACC45FT10A5S Plug (D20950)

.... .1 289T0341-10301 Identification Tape

.... .1 BACT12AR202 Lug

.... .2 BACT12AR222 Lug

.... .3 M39029/11-145 Terminal Block Contact

.... .3 BACC47DE7 Terminal Block Contact

.... .1 BACM15C3B Terminal Block

(a) The kit has more parts than are necessary for installation. Discard parts that are not used or

keep the parts for spares.

(b) Lacing tape 18DZ-A, white, 20 feet

(c) Lacing tape 18DZ-A, green, 60 feet

2. Parts and Materials Supplied by the Operator:

Quantity Part Number (Specification) Name

2 feet MS20995C20 Lockwire

Oct 12/95 767-31-0073

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BOEING SERVICE BULLETIN 767-31-0073

B. Parts Necessary to Change Spares

None

C. Special Tools and Equipment

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 I.K., References, can be

necessary. Examine operator tool supply to make sure all necessary tools are available.

D. Existing Parts Accountability

The parts shown below are changed as shown in this service bulletin. Quantity is the number of parts

changed on each airplane.

Existing Part Number RUC Name Quantity New Part Number PNC RC

233T9110-1101 DIS Tube Assembly 1 233T9110-1162 S A

233T9110-1002 or

-1047

DIS Tube Assembly 1 233T9110-1072 S A

RUC Recommended Use Code

DIS - Discard the part.

PNC Part Number Code

S - This is the part number for the new equivalent or replacement part.

- To get a new part, use this part number in your order.

RC Replacement Code

A - Do not use the existing part to replace the new or changed part.

Oct 12/95 767-31-0073

15
BOEING SERVICE BULLETIN 767-31-0073

BLANK PAGE

Oct 12/95 767-31-0073

16
BOEING SERVICE BULLETIN 767-31-0073

III. ACCOMPLISHMENT INSTRUCTIONS

NOTES:

1. The paragraphs identified with a letter give the general work instructions and the necessary tests.

The instructions identified with numbers on the figures give the recommended sequence of steps.

2. 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 767 Structural Repair Manual Chapter 51

- Torque limits to tighten nuts and bolts are given in 767 Structural Repair Manual Chapter 51.

3. Alternative fasteners are given in 767 Structural Repair Manual Chapter 51.

4. Refer to the Boeing Standard Wiring Practices Manual 20-10-11 and 20-10-12 for the wire

installation procedures.

5. Obey all of the warnings and cautions given in the specified manual sections.

A. On Group 1-3, 5 and 6-8 airplanes, remove ceiling panel aft of the Electrical/Electronic shelf as

specified in the 767 Maintenance Manual 25-52-02.

B. Remove the left and right EICAS computers as specified in the 767 Maintenance Manual 31-41-02.

C. On Groups 1-3 and 6-8 airplanes: install the EICAS maintenance enable bypass switch as shown in

Figure 1.

D. Install the altitude pressure switch as shown in Figure 2.

E. Install the altitude pressure tubing as follows:

- On Groups 1-5 airplanes: use Figure 3.

- On Groups 6-10 airplanes: use Figure 4.

F. Make a wiring modification and wiring installation as follows:

- On Groups 2 and 6 airplanes: use Figure 5 and 7.

- On Groups 1, 3, 5, 7 and 8 airplanes: use Figure 5 and 8.

- On Group 9 airplanes: use Figure 6 and 7.

- On Groups 4 and 10 airplanes: use Figure 6 and 8.

G. Install the left and right EICAS computers as specified in the 767 Maintenance Manual 31-41-02.

H. On Group 1-3, 5 and 6-8 airplanes, install ceiling panel aft of the Electrical/Electronic shelf as

specified in the 767 Maintenance Manual 25-52-02.

Oct 12/95 767-31-0073

17
BOEING SERVICE BULLETIN 767-31-0073

I. Do the applicable steps:

- On Groups 1 - 5 airplanes: flush the auxiliary static system No. 2 and do leak test of the auxiliary

static system No. 2 as specified in the 767 Maintenance Manual 34-11-00.

- On Groups 6 - 10 airplanes: flush the auxiliary static system No. 1 and do leak test of the auxiliary

static system No. 1 as specified in the 767 Maintenance Manual 34-11-00.

J. Do operational test of the EICAS maintenance enable system as follows:

1. Open these circuit breakers in P11 panel.

Circuit Breaker No. Name Location

C1170 LDG GR POS AIR/GND SYS 2 U23 or U24

C1175 LDG GR POS AIR/GND SYS 1 C30

C1182 AIR/GND SYS 1 U15

C1575 (if installed) LDG GR POS AIR/GND SYS 2 ALT E19, C21, C27, or C29

2. Push the STATUS switch on P9 EICAS Display Select Panel.

3. Push the TEST switch on EICAS Maintenance Panel located in the P61 Right Side Panel.

4. Make sure that there is no change in the display.

5. Make sure that Maint Enable Bypass switch S612 on E8 EICAS rack is in the NORMAL position.

6. Disconnect connector D20950 from the Altitude Pressure switch S921 on E8 EICAS rack.

7. Install a jumper wire between pins 1 and 2 of connector D20950.

8. Push the CONF/MCDP switch on EICAS Maintenance Panel.

9. Make sure that the CONF/MCDP page shows on the EICAS Lower Display Unit.

10. Remove the jumper wire from connector D20950.

11. Connect connector D20950 to the Altitude Pressure switch S921.

12. Push the STATUS switch on P9 EICAS Display Select Panel.

13. Set Maint Enable Bypass switch S612 to the BYPASS position.

Oct 12/95 767-31-0073

18
BOEING SERVICE BULLETIN 767-31-0073

14. Push the CONF/MCDP switch on EICAS Maintenance Panel.

15. Make sure that the CONF/MCDP page shows on the EICAS Lower Display Unit.

16. Set Maint Enable Bypass switch S612 to the NORMAL position.

17. Push the STATUS switch on P9 EICAS Display Select Panel.

18. Push the CONF/MCDP switch on EICAS Maintenance Panel.

19. Make sure that there is no change in the display.

20. Close circuit breakers C1170, C1175, C1182, C1575 (if installed).

21. Push the CONF/MCDP switch on EICAS Maintenance Panel.

22. Make sure that the CONF/MCDP page shows on the EICAS Lower Display Unit.

K. Put the airplane back into the serviceable configuration.

Oct 12/95 767-31-0073

19
BOEING SERVICE BULLETIN 767-31-0073

FIGURE TABLE OF CONTENTS

Title Page

FIGURE 1. EICAS MAINTENANCE ENABLE BYPASS SWITCH INSTALLATION -

GROUPS 1-3 AND 6-8 AIRPLANES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES . . . . . 24

FIGURE 3. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 1-5

AIRPLANES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10

AIRPLANES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

FIGURE 5. WIRING MODIFICATION - GROUPS 1-3, 5 AND 6-8 AIRPLANES . . . . . . . 38

FIGURE 6. WIRING MODIFICATION - GROUPS 4, 9 AND 10 AIRPLANES. . . . . . . . . . 41

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES . . . . . . . . . . 43

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES . . . . 47

Oct 12/95 767-31-0073

20
BOEING SERVICE BULLETIN 767-31-0073

266.5

STA

FWD

RACK

E8 EICAS

MAIN EQUIPMENT CENTER

B

B A

A FWD

UP

INBD

R41408

FIGURE 1. EICAS MAINTENANCE ENABLE BYPASS SWITCH INSTALLATION - GROUPS 1-3 AND 6-8

AIRPLANES

Oct 12/95 SHEET 1 OF 3 767-31-0073

21
BOEING SERVICE BULLETIN 767-31-0073

7

9

3

3

8

7 2

5 3

4

1 6

S612

(4 LOCATIONS)

UP

FWD

VIEW C-C

266.5

STA

(2 LOCATIONS)

0.60

7.10 5.30

UP

FWD

VIEW B-B

STA

266.5

VIEW A-A

UP

INBD

LBL

53.07

0.32

4.00

3.30

0.80

BYPASS

NORMAL

EICAS MAINT

ENABLE BYPASS

C

C

R41472 -

FIGURE 1. EICAS MAINTENANCE ENABLE BYPASS SWITCH INSTALLATION - GROUPS 1-3 AND 6-8

AIRPLANES

Oct 12/95 SHEET 2 OF 3 767-31-0073

22
BOEING SERVICE BULLETIN 767-31-0073

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 Bracket 284T1038-4 1 -

2 Install Rivet BACR15FT5AD4 2 -

3 Install Switch ITL187-3 1 -

Switch Guard 405-112 1

4 Install Lockwire MS20995C20 - With switch lever in the OFF

position. Use double twist

method as specified in the

BSOPM 20-50-02

5 Install Marker BAC27TEX3095 1 -

6 Install Marker BAC27TEX2962 1 -

7 Install Nutplate BACN10TL3-4 3 -

8 Install Rivet BACR15BB4AD5 2 -

9 Install Rivet NAS1398D4-3 4 -

FIGURE 1. EICAS MAINTENANCE ENABLE BYPASS SWITCH INSTALLATION - GROUPS 1-3 AND 6-8

AIRPLANES

Oct 12/95 SHEET 3 OF 3 767-31-0073

23
BOEING SERVICE BULLETIN 767-31-0073

SEE DETAIL II

SEE DETAIL I

FWD

STA

266.5

MAIN EQUIPMENT CENTER

INBD

UP

FWD

R41478

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES

Oct 12/95 SHEET 1 OF 5 767-31-0073

24
BOEING SERVICE BULLETIN 767-31-0073

4

266.5

STA

DETAIL I

A

A

FWD

UP

INBD

R41506

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES

Oct 12/95 SHEET 2 OF 5 767-31-0073

25
BOEING SERVICE BULLETIN 767-31-0073

2

1

3

0.58

3.42 (4 LOCATIONS)

VIEW A-A

S921

PRESSURE SW

UP

FWD

R55431

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES

Oct 12/95 SHEET 3 OF 5 767-31-0073

26
BOEING SERVICE BULLETIN 767-31-0073

1.00

5

7

6

8

FWD

UP

VIEW B-B

DETAIL II

6.00

0.26

(2 LOCATIONS)

(2 LOCATIONS)

FWD

UP

B

B

R41543

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES

Oct 12/95 SHEET 4 OF 5 767-31-0073

27
BOEING SERVICE BULLETIN 767-31-0073

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 Bracket 233T9118-105 1 -

2 Install Rivet BACR15FT6AD5 4 -

3 Install Marker BAC27TFDE534 1 -

4 Install Pressure Switch 6502-10K 1 -

Clamp 123-2222F 1

5 Install Nutplate BACN10GH3-6 1 -

6 Install Nutplate BACN10TL3-3 1 -

7 Drill Hole - - -

Do 100 Degrees

Countersink

- - On the other side (inboard side).

Refer to 767 SRM 51-70-16.

Install Rivet BACR15BA3AD3 2 Rivet head is installed on the

other side.

8 Install Rivet BACR15DR3P2 2 Get rivet from kit 015T1461-9.

FIGURE 2. ALTITUDE PRESSURE SWITCH INSTALLATION - ALL AIRPLANES

Oct 12/95 SHEET 5 OF 5 767-31-0073

28
BOEING SERVICE BULLETIN 767-31-0073

SEE DETAIL I

FWD

STA

266.5

MAIN EQUIPMENT CENTER

INBD

UP

FWD

R41626

FIGURE 3. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 1-5 AIRPLANES

Oct 12/95 SHEET 1 OF 3 767-31-0073

29
BOEING SERVICE BULLETIN 767-31-0073

1 7

266.5

STA

6

5

3

2 4

STRINGER 27L

STRINGER 26L

DRAIN

AUXILIARY STATIC NO.2

DETAIL I

FWD

UP

INBD

R41711

FIGURE 3. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 1-5 AIRPLANES

Oct 12/95 SHEET 2 OF 3 767-31-0073

30
BOEING SERVICE BULLETIN 767-31-0073

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 Remove /

Keep

Screw - - -

Clamp - -

2 Remove Tube Assembly 233T9110-1101 1 -

3 Install Tee BACT16AY060606W 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

4 Install Tube Assembly 233T9110-1162 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

5 Install Hose Assembly BACH30BC06-0110 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

6 Install Quick Disconnect 1QF2-3-64A 1 -

1QM1-3-54A 1 This quick disconnect should be

installed to the pressure switch.

Get the quick disconnect from kit

015T1461-9.

7 Install Clamp (kept) - - -

Screw (kept) - -

FIGURE 3. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 1-5 AIRPLANES

Oct 12/95 SHEET 3 OF 3 767-31-0073

31
BOEING SERVICE BULLETIN 767-31-0073

DETAILS I AND II

SEE

212.5

228.5

246

STA

STA

266.5

STA

STA

FWD

MAIN EQUIPMENT CENTER

FWD

UP

INBD

R41750

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES

Oct 12/95 SHEET 1 OF 6 767-31-0073

32
BOEING SERVICE BULLETIN 767-31-0073

1 4

6

7

8

1

1

3

5

9 12

10

2

11

S-26L

S-27L

S-24L

DETAIL I

STA

266.5

STA

246

(2 LOCATIONS)

SEE DETAIL IV DETAIL II

CONTINUED ON

SEE DETAIL III

FWD

UP

INBD

R42185

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES

Oct 12/95 SHEET 2 OF 6 767-31-0073

33
BOEING SERVICE BULLETIN 767-31-0073

9 12

15

13 17

16

14 18

212.5

STA

228.5

STA

(2 LOCATIONS)

SEE DETAIL IV

FROM

DETAIL I

CONTINUED

NO.1 DRAIN

AUXILIARY STATIC

DETAIL II

FWD

UP

INBD

R42209

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES

Oct 12/95 SHEET 3 OF 6 767-31-0073

34
BOEING SERVICE BULLETIN 767-31-0073

DETAIL III

DRAIN

HOSE ASSEMBLY

O-RING

DISCONNECT

QUICK

TUBE ASSEMBLY

EXISTING

CLAMP

SPACER

SCREW

DETAIL IV

EXISTING

SPACER

WASHER CLAMP

R42242

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES

Oct 12/95 SHEET 4 OF 6 767-31-0073

35
BOEING SERVICE BULLETIN 767-31-0073

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 Remove /

Keep

Screw - - Do not remove clamp from tube

assembly. Washer - -

2 Install Hose Drain

Assembly

50017A43-6-0070 1 -

O-Ring MS28778-6 1

Quick Disconnect 1QF2-3-64A 1

1QM1-3-69A 1

3 Install Tube Assembly 233T9110-1075 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

4 Install Clamp BACC10DK10 1 Install stringer attach assembly

287T0012-3 if necessary. Use Screw (kept) - -

Washer (kept) - -

5 Install Clamp BACC10DK6 1 -

Use Screw (kept) - -

Washer (kept) - -

6 Install Tee Assembly MS21905W6 1 -

7 Install Hose Assembly BACH30BC06-0110 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

8 Install Quick Disconnect 1QF2-3-64A 1 -

1QM1-3-54A This quick disconnect should be

installed to the pressure switch.

Get the quick disconnect from kit

015T1461-9.

9 Remove Screw - - Keep spacer. Do not remove

clamp from tube assembly. Spacer - -

10 Install Tube Assembly 233T9110-1074 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

11 Install Clamp BACC10DK6 1 -

Use Screw (kept) - -

Washer (kept) - -

12 Install Clamp BACC10DK6 3 -

Use Screw BACS12GU3-40 3

Washer NAS1149D0332J 3

Spacer NAS43DD3-45FC 3

Spacer (kept) - -

13 Install Tube Assembly 233T9110-1073 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES

Oct 12/95 SHEET 5 OF 6 767-31-0073

36
BOEING SERVICE BULLETIN 767-31-0073

(Continued)

STEP TASK NAME PART NUMBER QTY NOTES

14 Remove /

Keep

Screw - -

Clamp - - From tube assembly

233T9110-1002 or -1047. Do not

remove clamp from other tube

assembly.

15 Remove Tube Assembly 233T9110-1002 or

-1047

1 -

16 Install Tube Assembly 233T9110-1072 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

17 Install Tee Assembly BACT16AY060606W 1 Tighten fittings with torque range

of 165 to 175 inch-pounds.

18 Install Clamp (kept) - - -

Use Screw (kept) - - -

FIGURE 4. ALTITUDE PRESSURE TUBING INSTALLATION - GROUPS 6-10 AIRPLANES

Oct 12/95 SHEET 6 OF 6 767-31-0073

37
BOEING SERVICE BULLETIN 767-31-0073

ADDED WIRE OR NEW ROUTING

EXISTING WIRE

DELETED WIRE OR FORMER ROUTING

1 2

11

12

10

10

3

2

7

3

9

4

8

5

6

5

7

7

3 2

(3 LOCATIONS)

(3 LOCATIONS)

SWITCH

BYPASS

ENABLE

MAINT

EICAS

S612

11

9

10

K202 SYS 2

AIR/GND RLY

D3688

012-24

01J-24

01J-24

NC

27 W768

J D5316P

POS 34

P37 RIGHT MISCELLANEOUS ELECTRICAL

W764-077-24

W764-076-24

AE0218

D5328P

POS 36

J

AE0221

8

9

J D6256P

POS 5

YC45

TB239

008-24 014-24

1

2 012-24

10K 3 NC

FT 5

011-20

013-20

GD171-DC

D20950

S921 ALTITUDE

PRESSURE SWITCH

2

NORMAL

BYPASS

009-24

020-20

GD171-S

GD171-DC

3

1

W192

W2006

E8 EICAS RACK

R41287

REFERENCE: 767 WIRING DIAGRAM 31-41-13

FIGURE 5. WIRING MODIFICATION - GROUPS 1-3, 5 AND 6-8 AIRPLANES

Oct 12/95 SHEET 1 OF 3 767-31-0073

38
BOEING SERVICE BULLETIN 767-31-0073

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 Relay Socket

Contact

BACC47ER1 1 -

2 Pin Contact BACC47CN1A 4 -

3 Socket Contact BACC47CP1A 7 -

4 Terminal Block

Contact

M39029/11-145 3 -

5 Lug BACT12AR222 2 -

6 Lug BACT12AR202 1 -

7 Terminal Block

Contact

BACC47DE7 3 -

8 Plug BACC45FT10A5S 1

Cable Clamp - - The cable clamp is included with the plug.

Identification Tape 289T0341-10301 1 -

9 Terminal Block BACM15C3B 1 Terminal block may already install on some

airplanes.

Spacer BACS18AR6 4 As required to obtain position 45 and 46 on

some airplanes.

10 - - - Existing spare wires for airplanes

VB401, VE101-VE104, VE116-VE118,

VE121-VE126, VE141-VE152,

VF001-VF002, VF041-VF042, VF051,

VF171-VF172, VF180, VL701-VL703,

VN751-VN753.

11 - - - See Pin Data Table for pin number.

12 - - - See Pin Data Table for pin number.

FIGURE 5. WIRING MODIFICATION - GROUPS 1-3, 5 AND 6-8 AIRPLANES

Oct 12/95 SHEET 2 OF 3 767-31-0073

39
BOEING SERVICE BULLETIN 767-31-0073

PIN DATA TABLE

Airplanes Pin Number

for

Flag note 11

Pin Number

for

Flag note 12

Group 1: VF091-VF093, VF101-VF102, VF161-VF162,

VN001-VN041, VN171-VN173, VN211-VN212,

VN242-VN243, VN291-VN292, VN301-VN314,

VN371-VN372, VN376, VN381-VN388, VN491-VN513,

VN531-VN532, VN536-VN537, VN541-VN542, VN551,

VN556-VN557, VN561-VN562, VN676, VN971

VL001-VL006, VL011

8 9

Group 7: VE171-VE172, VK161-VK164, VK171

Group 7 VE083-VE086 15 26

Group 1: VF061-VF062, VN051-VN064, VN081-VN095,

VN191-VN196, VN231-VN234, VN421-VN425,

VN546-VN547, VN631-VN638, VN651-VN656,

VN791-VN792, VN951-VN952

15 16

Group 3: VF171-VF172, VF180, VL701-VL703, VN751-VN753

Group 5: VN921-VN922

Group 7 VB325-VB332, VB441-VB444, VK012-VK015,

VK081-VK112, VK131-VK133, VK141-VK144

Group 3: VF001-VF002, VF041-VF042, VF051 15 19

Group 6: VA001-VA020, VA501-VA515, VA701-VA712,

VB001-VB002, VB051-VB055, VB101-VB121,

VB201-VB202, VB251-VB253, VB281-VB284,

VB301-VB302, VB321-VB324, VB371-VB373,

VE001-VE002, VE021-VE023, VE041-VE043,

VE061-VE068, VE101-VE104, VK001

Group 7: VA516-VA530, VA713-VA719, VB122-VB125, VE003,

VE069, VK001-VK011, VK021-VK022

Group 8: VB401, VE116-VE118, VE121-VE126, VE141-VE152

Group 1: VN111-VN127, VN130-VN135 47 48

FIGURE 5. WIRING MODIFICATION - GROUPS 1-3, 5 AND 6-8 AIRPLANES

Oct 12/95 SHEET 3 OF 3 767-31-0073

40
BOEING SERVICE BULLETIN 767-31-0073

DELETED WIRE OR FORMER ROUTING

EXISTING WIRE

ADDED WIRE OR NEW ROUTING

1

(3 LOCATIONS)

(3 LOCATIONS)

2

5

3

4

1

2

GD171-DC

W764

J

POS 5

D6256P

AE0221

008-24 8

E8 EICAS RACK

S612

EICAS

MAINT

ENABLE

BYPASS

SWITCH

BYPASS

NORMAL

009-24

1

3

020-20

2

9

TB239

W2006

GD171-S

PRESSURE SWITCH

S921 ALTITUDE

D20950

GD171-DC

013-20

011-20

FT 5

10K 3 NC

2 012-24

1

YC45 014-24

R41288

REFERENCE: 767 WIRING DIAGRAM 31-41-13

FIGURE 6. WIRING MODIFICATION - GROUPS 4, 9 AND 10 AIRPLANES

Oct 12/95 SHEET 1 OF 2 767-31-0073

41
BOEING SERVICE BULLETIN 767-31-0073

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 Socket Contact BACC47CP1A 4 -

2 Terminal Block

Contact

BACC47DE7 2 -

3 Terminal Block

Contact

M39029/11-145 3 -

4 Terminal Block BACM15C3B 1 Terminal block may already install on some

airplanes.

Spacer BACS18AR6 4 As required to obtain position 45 and 46 on

some airplanes.

5 Plug BACC45FT10A5S 1 -

Cable Clamp - - The cable clamp is included with the plug.

Identification Tape 289T0341-10301 1 -

ADDED WIRE OR NEW ROUTING

EXISTING WIRE

DELETED WIRE OR FORMER ROUTING

989752

FIGURE 6. WIRING MODIFICATION - GROUPS 4, 9 AND 10 AIRPLANES

Oct 12/95 SHEET 2 OF 2 767-31-0073

42
BOEING SERVICE BULLETIN 767-31-0073

6

FWD

SEE DETAIL I AND II

E8 RACK

P37 PANEL

W764

MAIN EQUIPMENT CENTER

R42264

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES

Oct 12/95 SHEET 1 OF 4 767-31-0073

43
BOEING SERVICE BULLETIN 767-31-0073

1 2

2

1

2

FWD

UP

TB239

EICAS MAINT

ENABLE BYPASS

SWITCH

CONTINUED

TO DETAIL II

GROUND BLOCK

GD171

W2006

W2006

TERMINAL BLOCK

DETAIL I

(E8 RACK)

CONNECTOR

D6256J

AE0221

R42420

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES

Oct 12/95 SHEET 2 OF 4 767-31-0073

44
BOEING SERVICE BULLETIN 767-31-0073

5

3

4

DETAIL II

UP

FWD

DETAIL I

CONTINUED FROM

W2006

R42442

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES

Oct 12/95 SHEET 3 OF 4 767-31-0073

45
BOEING SERVICE BULLETIN 767-31-0073

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 Route Wire - - From EICAS enable

switch S612 to

terminal block

TB139, ground block

GD171, and

connector D6256J.

New wires should be

routed with white

color tie bundle.

On Groups 2

and 6 airplanes

only.

Use Lacing Tape 289T0341-104 -

2 Install Clamp BACC10DK2 3 -

Use Screw NAS1801-3-7 3 -

Washer NAS1149D0332J 3

3 Route Wire - - From altitude pressure switch S921 to

ground block GD171 and terminal

block TB139 and from terminal block

TB139 to connector D6256J. New

wires should be routed with white

color tie bundle.

Use Lacing Tape 289T0341-104 -

4 Install Clamp BACC10DK2 1 -

Use Filler BACP20BA1 1 -

Screw NAS1801-3-7 1

Washer NAS1149D0332J 1

5 Install Clamp BACC10DK2 1 -

Use Filler BACP20BA1 1 -

Screw NAS1801-3-26 1

Washer NAS1149D0332J 1

Spacer NAS42DD-6-80 1

6 Route Wire - - From E8 rack to P37 panel with the

existing wire bundle routing. New

wires should be routed with green

color tie bundle.

Use Lacing Tape 289T0341-105 -

7 Route Wire - - In P37 panel with

the existing wore

bundle routing.

New wires should

be routed with

green color tie

bundle.

On Groups 2 and

6 airplanes only.

Use Lacing Tape 289T0341-105

FIGURE 7. WIRING INSTALLATION - GROUPS 2, 6, AND 9 AIRPLANES

Oct 12/95 SHEET 4 OF 4 767-31-0073

46
BOEING SERVICE BULLETIN 767-31-0073

6

P37 PANEL

E8 RACK

SEE DETAIL I AND II

FWD

MAIN EQUIPMENT CENTER

R42447

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES

Oct 12/95 SHEET 1 OF 4 767-31-0073

47
BOEING SERVICE BULLETIN 767-31-0073

FWD

UP

2

1

2

(E8 RACK)

DETAIL I

W2006

SWITCH

ENABLE BYPASS

EICAS MAINT

D6256J

CONNECTOR

GROUND

BLOCK GD171

BLOCK TB239

TERMINAL

TO DETAIL II

CONTINUED

R42615

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES

Oct 12/95 SHEET 2 OF 4 767-31-0073

48
BOEING SERVICE BULLETIN 767-31-0073

5

3

4

DETAIL I

CONTINUED FROM

DETAIL II

UP

FWD

CONNECTOR

D20950

R42621

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES

Oct 12/95 SHEET 3 OF 4 767-31-0073

49
BOEING SERVICE BULLETIN 767-31-0073

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 Route Wire - - From EICAS enable

switch S612 to terminal

block TB139, ground

block GD171, and

connector D6256J.

New wires should be

routed with white color

tie bundle.

On Groups

1, 3 , 5 , 7

and 8

airplanes

only.

Use Lacing Tape 289T0341-104 -

2 Install Clamp BACC10DK2 3 -

Use Screw NAS1801-3-7 3 -

Washer NAS1149D0332J 3

3 Route Wire - - From altitude pressure switch S921 to

ground block GD171 and terminal

block TB139 and from terminal block

TB139 to connector D6256J. New

wires should be routed with green

color tie bundle.

Use Lacing Tape 289T0341-105 -

4 Install Clamp BACC10DK2 1 -

Use Filler BACP20BA1 1 -

Screw NAS1801-3-7 1

Washer NAS1149D0332J 1

5 Install Clamp BACC10DK2 1 -

Filler BACP20BA1 1 -

Screw NAS1801-3-26 1

Washer NAS1149D0332J 1

Spacer NAS42DD-6-80 1

6 Route Wire - - From E8 rack to P37

panel with the existing

wire bundle routing.

New wires should be

routed with green color

tie bundle.

On Groups

3 and 8

airplanes

Use only. Lacing Tape 289T0341-105

7 Route Wire - - In P37 panel with the

existing wire bundle

routing. New wires

should be routed with

green color tie bundle.

On Groups

1, 3, 5, 7

and 8

airplanes

only.

Use Lacing Tape 289T0341-105

FIGURE 8. WIRING INSTALLATION - GROUPS 1, 3-5, 7, 8 AND 10 AIRPLANES

Oct 12/95 SHEET 4 OF 4 767-31-0073

50
Commercial

Airplane

Group

767

Service Bulletin

Number: 767-31-0073 Evaluation Form Date: October 12, 1995

ATA System: 3141

Prepared By: Tuan Lam

SUBJECT: INDICATING/RECORDING SYSTEMS - CENTRAL COMPUTERS - INFLIGHT EICAS

MAINTENANCE DATA SELECTION SYSTEM INSTALLATION

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

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Please give us this data:

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COMMENTS:

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

directly to this address:

T.J. Taylor, Manager

Service Bulletin Engineering

Boeing Commercial Airplane Group

P.O. Box 3707, Mail Stop 20-85

Seattle, WA 98124-2207

BOEING COMMERCIAL AIRPLANE GROUP P.O. BOX 3707 SEATTLE, WASHINGTON 98124-2207