Commercial 

Airplanes 737

Service Bulletin

SPECIAL ATTENTION

Number: 737-31-1471

Original Issue: November 29, 2012

ATA System: 3162

SUBJECT: INDICATING/RECORDING SYSTEMS - Common Display System - Installation of

Phase 3A Display Unit and Database Software

Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15

CFR 300-774). An export license may be required before it is used for development, production or use by foreign

persons from specific countries. The controller of this data has the individual responsibility to abide by all export

laws.

ECCN: 9E991

BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET

Copyright © 2012 Boeing.

Unpublished Work. All Rights Reserved.

Treatment of this document and its content is governed by contract with Boeing. Rights to use this document

are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The

Boeing Company.

Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, DreamlinerTM,

BBJ, DC-8, DC-9, DC-10, KC-10, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and Boeing

liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection

with this document unless provided in writing by Boeing. BOEING is a trademark of Boeing Management

Company.

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BLANK PAGE
Table of Contents

Summary ...................................................... 5

1. PLANNING INFORMATION ........................................ 7

A. Effectivity ................................................ 7

1. Airplanes ............................................. 7

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2. Data Supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 24

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

M. Software Accomplishment Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

C. Parts Necessary for Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1. Kits/Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2. Parts and Materials Supplied by the Operator . . . . . . . . . . . . . . . . . . . . . . . . 25

3. Parts Modified and Reidentified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4. Parts Removed and Not Replaced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 26

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

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BLANK PAGE
Commercial 

Airplanes 737

Service Bulletin

SPECIAL ATTENTION

Summary Number: 737-31-1471

Original Issue: November 29, 2012

ATA System: 3162

SUBJECT: INDICATING/RECORDING SYSTEMS - Common Display System - Installation of

Phase 3A Display Unit and Database Software

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

CONCURRENT REQUIREMENTS

None.

BACKGROUND

This service bulletin gives instructions to replace the Common Display System (CDS) Phase 3 Display Units

(DU)s with new Phase 3A DUs and install new DU database software. If this change is not done, one or more

CDS DUs could flicker or the data on the screen could go out of view temporarily.

The existing Phase 3 DU is susceptible to High Intensity Radiated Field (HIRF) emissions at field intensities

below the necessary HIRF Qualification Test levels. This problem can cause the DU to flicker or the data on the

screen to go out of view temporarily. It can affect one or more DUs during a very important phase of flight.

Airplanes with non phase 3 DUs can install the new database software for the future installation of Phase 3A

DUs.

Boeing Service Related Problem (SRP) 737NG-SRP-31-0048 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 737NG FTD 31-10001 is related to this service bulletin.

This table is provided to operators for planning purposes only. Refer to the applicable sections for more

information.

Planning Data Affected Reference

Spares Affected Yes Paragraph 1.A.2., Spares Affected

Paragraph 1.E., Compliance and Paragraph

1.F., Approval

AD Related Yes

Weight and Balance Change No Paragraph 1.H., Weight and Balance Changes

Electrical Load Changed No Paragraph 1.I., Electrical Load Data

Publications Affected Yes Paragraph 1.K., Publications Affected

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Planning Data Affected Reference

Airplane Flight Operations Affected (Flight Crew No Paragraph 1.K., Publications Affected

Operations Manual and/or FAA Approved Airplane Flight Manual)

Kits/Parts Required No Paragraph 2.C.1., Kits/Parts

Paragraph 2.C.2., Parts and Materials Supplied

by the Operator

Operator Supplied Material Yes

Paragraph 2.F., Special Tooling Necessary to

do this Service Bulletin

Special Tooling Required No

ACTION (PRR 38275-174S)

Work Package 1: Install new database software into the Display Electronics Units (DEU)s.

Work Package 2: Replace the existing Phase 3 DUs with new Phase 3A DUs.

EFFECTIVITY

737-600/-700/-700C/-800/-900/-900ER Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected

airplane(s).

COMPLIANCE

The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service

bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin

mandatory.

Boeing recommends that the change given in this service bulletin be done within 60 months after the original

issue date of this service bulletin.

INDUSTRY SUPPORT INFORMATION

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

MANPOWER

Refer to Paragraph 1.G., Manpower.

MATERIAL INFORMATION

Operator Supplied Parts/Materials.

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

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BOEING SERVICE BULLETIN 737-31-1471
Commercial 

Airplanes 737

Service Bulletin

SPECIAL ATTENTION

Number: 737-31-1471

Original Issue: November 29, 2012

ATA System: 3162

SUBJECT: INDICATING/RECORDING SYSTEMS - Common Display System - Installation of

Phase 3A Display Unit and Database Software

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index D6-19567 Part 3 for Airplane Variable Number, Line Number, and

Serial Number data.

This service bulletin is for the airplane(s) shown below. An equivalent change is on subsequent

production airplanes. Refer to PRR 38275-174S for data about this change.

GROUP CONFIGURATION DESCRIPTION

737-600/-700/-700C/-800/-900/-900ER Airplanes with Honeywell

Common Display System (CDS) Display Units (DU)s installed

1 -

Airplanes with Honeywell CDS Phase 3 DUs with part number

4091900-932 or 4091900-934 installed

1

Airplanes with Honeywell CDS DUs with part number 4073610-902

or 4073610-906 or 4073610-912 or 4073610-916 or 4086850-922

or 4086850-924 installed

2

Airplane Models:

737-600, 737-700, 737-700C, 737-800, 737-900, 737-900ER

Variable Number Group

YA001 - YA099 1

YA101 - YA199 1

YA201 - YA211 1

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Variable Number Group

YA221 1

YA231 - YA242 1

YA251 - YA256 1

YA271 - YA272 1

YA291 1

YA301 - YA302 1

YA311 - YA314 1

YA321 - YA323 1

YA336 - YA345 1

YA351 1

YA356 - YA357 1

YA366 - YA367 1

YA371 - YA377 1

YA501 - YA536 1

YA541 - YA552 1

YA571 - YA578 1

YA601 - YA615 1

YA621 - YA622 1

YA626 - YA631 1

YA635 - YA636 1

YA641 - YA642 1

YA645 - YA650 1

YA656 - YA659 1

YA666 - YA667 1

YA671 - YA672 1

YA681 - YA691 1

YA701 - YA710 1

YA721 - YA722 1

YA731 - YA734 1

YA751 - YA756 1

YA801 - YA803 1

YA809 1

YA811 - YA814 1

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BOEING SERVICE BULLETIN 737-31-1471
Variable Number Group

YA831 - YA835 1

YA841 - YA862 1

YA881 - YA882 1

YA891 - YA892 1

YA961 - YA978 1

YB001 - YB006 1

YB101 - YB132 1

YB151 - YB153 1

YB156 - YB158 1

YB161 - YB164 1

YB171 - YB172 1

YB181 - YB184 1

YB201 - YB208 1

YB271 1

YB276 1

YB301 - YB310 1

YB371 - YB392 1

YB501 - YB502 1

YB521 - YB526 1

YB541 - YB544 1

YB551 1

YB561 - YB598 1

YB601 - YB635 1

YB651 1

YB656 1

YB671 - YB672 1

YB851 - YB863 1

YB871 - YB874 1

YB881 - YB893 1

YB901 - YB903 1

YB911 1

YB961 - YB975 1

YB981 1

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Variable Number Group

YB986 - YB998 1

YC001 - YC030 1

YC051 - YC084 1

YC091 - YC095 1

YC101 - YC104 1

YC111 - YC113 1

YC121 1

YC126 - YC127 1

YC136 - YC141 1

YC146 - YC147 1

YC151 - YC156 1

YC166 - YC171 1

YC176 - YC179 1

YC186 - YC190 1

YC201 - YC203 1

YC206 - YC207 1

YC301 - YC305 1

YC321 - YC387 1

YC391 - YC394 1

YC396 1

YC401 - YC417 1

YC421 - YC422 1

YC426 - YC428 1

YC436 - YC439 1

YC441 - YC448 1

YC451 - YC455 1

YC459 1

YC461 - YC467 1

YC471 - YC499 1

YC501 - YC526 1

YC571 - YC583 1

YC587 - YC589 1

YC591 - YC593 1

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Variable Number Group

YC601 - YC655 1

YC681 - YC696 1

YC701 - YC715 1

YC720 - YC725 1

YC727 - YC752 1

YC761 - YC770 1

YC781 - YC793 1

YC801 - YC892 1

YC901 - YC907 1

YC921 - YC922 1

YC931 - YC932 1

YC941 - YC951 1

YC971 - YC978 1

YC981 - YC983 1

YD001 - YD007 1

YD021 - YD025 1

YD041 - YD057 1

YD081 - YD084 1

YD101 - YD117 1

YD121 - YD126 1

YD151 - YD159 1

YD171 - YD172 1

YD201 - YD203 1

YD206 - YD209 1

YD216 - YD219 1

YD251 - YD254 1

YD256 - YD257 1

YD261 1

YD301 - YD334 1

YD391 1

YD401 - YD410 1

YD412 - YD419 1

YD481 - YD485 1

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Variable Number Group

YD491 - YD499 1

YD501 - YD512 1

YD531 - YD535 1

YD541 - YD547 1

YD561 - YD564 1

YD571 - YD572 1

YD591 - YD595 1

YD601 - YD612 1

YD651 - YD655 1

YE001 - YE020 1

YE051 1

YE101 - YE109 1

YE151 - YE157 1

YE171 - YE172 1

YE201 - YE206 1

YE301 - YE305 1

YE321 - YE326 1

YE371 - YE383 1

YF001 - YF011 1

YF021 - YF049 1

YF051 - YF068 1

YF086 - YF087 1

YF106 - YF107 1

YF111 - YF114 1

YF116 - YF119 1

YF121 - YF132 1

YF176 - YF178 1

YF191 - YF192 1

YF201 - YF276 1

YF401 - YF402 1

YF431 - YF432 1

YF436 - YF437 1

YF441 - YF442 1

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Variable Number Group

YF451 - YF460 1

YF501 - YF599 1

YF601 - YF653 1

YF701 - YF707 1

YF801 - YF805 1

YF831 - YF832 1

YF836 - YF838 1

YF871 1

YF901 - YF905 1

YF921 - YF928 1

YF951 - YF954 1

YG001 - YG044 1

YG061 - YG064 1

YG066 - YG089 1

YG091 - YG099 1

YG101 - YG104 1

YG111 - YG114 1

YG116 - YG136 1

YG201 - YG205 1

YG211 - YG214 1

YG221 - YG224 1

YG251 - YG252 1

YG501 - YG512 1

YG601 - YG602 1

YG701 1

YG711 1

YH001 - YH012 1

YH031 - YH055 1

YH071 - YH080 1

YH101 - YH132 1

YH201 - YH202 1

YH206 - YH207 1

YH301 - YH306 1

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Variable Number Group

YH321 - YH322 1

YH501 - YH522 1

YH551 - YH562 1

YH601 - YH604 1

YH611 - YH618 1

YH631 - YH632 1

YH641 1

YJ001 - YJ013 1

YJ021 1

YJ471 - YJ480 1

YJ501 - YJ517 1

YJ531 - YJ579 1

YJ591 - YJ599 1

YJ631 - YJ632 1

YJ671 - YJ694 1

YJ801 - YJ867 1

YJ871 - YJ880 1

YJ901 - YJ904 1

YJ908 - YJ929 1

YJ931 - YJ937 1

YJ941 - YJ956 1

YJ961 1

YJ976 - YJ977 1

YK001 - YK007 1

YK101 - YK104 1

YK111 - YK112 1

YK121 - YK122 1

YK131 - YK133 1

YK136 - YK139 1

YK141 - YK142 1

YK146 - YK148 1

YK151 - YK154 1

YK161 - YK167 1

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Variable Number Group

YK171 1

YK176 - YK177 1

YK186 1

YK191 1

YK196 1

YK201 - YK202 1

YK301 - YK314 1

YK321 - YK340 1

YK361 - YK378 1

YK401 - YK406 1

YK426 - YK427 1

YK431 - YK450 1

YK456 - YK467 1

YK471 - YK473 1

YK476 1

YK480 - YK487 1

YK491 - YK492 1

YK495 - YK499 1

YK511 - YK516 1

YK521 - YK530 1

YK551 - YK571 1

YK576 - YK577 1

YK580 - YK585 1

YK601 - YK602 1

YK606 - YK607 1

YK611 - YK616 1

YK621 - YK634 1

YK641 - YK644 1

YK651 - YK665 1

YK671 - YK672 1

YK676 - YK677 1

YK681 - YK686 1

YK691 1

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Variable Number Group

YK695 1

YK701 - YK713 1

YK716 - YK719 1

YK721 - YK741 1

YK751 - YK770 1

YK776 - YK778 1

YK781 - YK785 1

YK791 - YK792 1

YK796 - YK797 1

YK801 - YK899 1

YK901 - YK912 1

YK918 - YK919 1

YK921 - YK929 1

YK941 - YK999 1

YL001 - YL005 1

YL011 - YL016 1

YL021 - YL024 1

YL051 - YL052 1

YL056 - YL057 1

YL061 1

YL066 - YL069 1

YL076 - YL077 1

YL101 - YL137 1

YL201 - YL237 1

YL241 - YL242 1

YL271 - YL272 1

YL281 - YL284 1

YL301 - YL303 1

YL311 - YL314 1

YL316 - YL321 1

YL351 - YL353 1

YL371 - YL374 1

YL401 1

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BOEING SERVICE BULLETIN 737-31-1471
Variable Number Group

YL421 - YL429 1

YL431 - YL444 1

YL461 - YL478 1

YL501 - YL509 1

YL531 - YL534 1

YL541 - YL551 1

YL561 - YL579 1

YL591 - YL598 1

YL601 - YL606 1

YL611 - YL612 1

YL616 - YL617 1

YL621 1

YL626 1

YL631 - YL634 1

YL636 - YL637 1

YL661 - YL664 1

YL676 - YL691 1

YL696 - YL697 1

YL701 - YL707 1

YL731 1

YL751 - YL752 1

YL756 - YL757 1

YL761 - YL780 1

YL796 - YL797 1

YL801 - YL815 1

YL901 - YL910 1

YL921 - YL940 1

YL951 - YL968 1

YM101 - YM103 1

YM201 - YM244 1

YM251 - YM299 1

YM301 - YM399 1

YM401 - YM415 1

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Variable Number Group

YM471 1

YM481 - YM484 1

YM501 - YM515 1

YM521 - YM522 1

YM541 1

YM551 - YM553 1

YM571 - YM572 1

YM581 - YM582 1

YM591 - YM599 1

YM631 - YM634 1

YM641 - YM652 1

YM671 - YM674 1

YM691 - YM699 1

YM701 - YM710 1

YM761 - YM765 1

YM771 - YM779 1

YN001 - YN016 1

YN021 - YN024 1

YN061 1

YN071 - YN082 1

YN091 - YN092 1

YN101 - YN112 1

YN121 1

YN126 1

YN201 - YN202 1

YN211 - YN219 1

YN231 - YN236 1

YN261 1

YN501 1

YN531 - YN534 1

YN551 - YN553 1

YN601 - YN606 1

YN701 - YN702 1

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Variable Number Group

YQ001 - YQ003 1

YQ011 - YQ020 1

YQ026 - YQ029 1

YQ036 - YQ045 1

YQ201 - YQ202 1

YQ231 1

YQ241 - YQ251 1

YQ281 - YQ284 1

YQ291 - YQ296 1

YQ301 - YQ302 1

YQ321 - YQ323 1

YQ401 - YQ403 1

YQ451 - YQ454 1

YQ456 1

YQ461 1

YQ471 1

YQ501 - YQ502 1

YR001 - YR018 1

YR051 - YR060 1

YR091 - YR093 1

YR101 - YR102 1

YR111 - YR117 1

YR126 - YR143 1

YR166 - YR178 1

YR201 - YR204 1

YR231 - YR256 1

YR271 - YR283 1

YR286 - YR287 1

YR291 - YR294 1

YR296 - YR297 1

YR301 - YR318 1

YR361 - YR366 1

YR381 - YR382 1

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Variable Number Group

YR401 - YR405 1

YR411 - YR412 1

YR416 1

YR421 - YR422 1

YR431 - YR433 1

YR441 - YR445 1

YR451 - YR455 1

YR457 - YR463 1

YR501 - YR506 1

YR511 - YR514 1

YR516 - YR520 1

YR526 - YR532 1

YR536 - YR539 1

YR601 - YR605 1

YR616 - YR620 1

YR651 - YR658 1

YR661 - YR662 1

YR701 - YR734 1

YR801 - YR812 1

YR831 - YR837 1

YR841 - YR844 1

YR851 - YR863 1

YR901 - YR903 1

YR931 - YR932 1

YR941 - YR942 1

YR951 - YR954 1

YR981 - YR988 1

YS001 - YS002 1

YS031 - YS032 1

YS051 - YS058 1

YS101 - YS107 1

YS151 - YS159 1

YS166 1

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Variable Number Group

YS221 - YS222 1

YS271 1

YS301 - YS307 1

YS371 1

YS501 1

YS551 1

YS601 - YS619 1

YS686 - YS690 1

YS701 - YS703 1

YS721 - YS724 1

2. Spares Affected

Examine your spares supply for the parts or components identified below. If any parts or components

are found, refer to Paragraph 3.B., Work Instructions for the recommended action.

Part Number

4091900-932

4091900-934

B. Concurrent Requirements

None.

C. Reason

This service bulletin gives instructions to replace the Common Display System (CDS) Phase 3 Display

Units (DU)s with new Phase 3A DUs and install new DU database software. If this change is not done,

one or more CDS DUs could flicker or the data on the screen could go out of view temporarily.

The existing Phase 3 DU is susceptible to High Intensity Radiated Field (HIRF) emissions at field

intensities below the necessary HIRF Qualification Test levels. This problem can cause the DU to flicker

or the data on the screen to go out of view temporarily. It can affect one or more DUs during a very

important phase of flight. Airplanes with non phase 3 DUs can install the new database software for

the future installation of Phase 3A DUs.

Boeing Service Related Problem (SRP) 737NG-SRP-31-0048 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 737NG FTD 31-10001 is related to this service bulletin.

D. Description

Work Package 1: Install new database software into the Display Electronics Units (DEU)s.

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Group 1, Configuration 1:

Work Package 2: Replace the existing Phase 3 DUs with new Phase 3A DUs.

The work in this service bulletin is done in the maintenance zone(s) given below.

Affected Maintenance Zones

Model Zone

737-600, 737-700, 737-700C, 211, 212

737-800, 737-900, 737-900ER

E. Compliance

The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to

this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this

service bulletin mandatory.

Boeing recommends that the change given in this service bulletin be done within 60 months after the

original issue date of this service bulletin.

F. Approval

This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified

in this service bulletin comply with the applicable regulations and are FAA approved, as well as European

Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved

airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on

the airplane in its original Boeing delivery configuration or as modified by other approved Boeing

changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also affected

by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval

before incorporating this service bulletin.

G. Manpower

You can do each work package independently but Work Package 2 must be accomplished after Work

Package 1.

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 inspect the work

• Time to cure the materials

• Time to make the parts

• Time to find the tools.

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Work Package 1 - Software Installation

Task Number of Persons Task Hours Elapsed Hours

Open Access 1 0.25 0.25

Software installation 1 0.50 0.50

Close Access 1 0.25 0.25

TOTAL FOR EACH AIRPLANE 1.00 1.00

This estimate gives general service bulletin incorporation time. The specific software data transfer times

can be found in 737-600/700/800/900 AMM 20-15-11.

Group 1, Configuration 1:

Work Package 2 - Display Unit Replacement

Task Number of Persons Task Hours Elapsed Hours

Open Access 1 0.25 0.25

Replace Display Unit 1 0.50 0.50

Close Access 1 0.25 0.25

TOTAL FOR EACH AIRPLANE 1.00 1.00

The time to make the change to the DUs in accordance with Honeywell SB 4091900-31-0002 Service

Bulletin is not included.

H. Weight and Balance Changes

None.

I. Electrical Load Data

Not changed.

J. References

1. Existing Data:

a. Engineering Change Memo PRR 38275-174S

b. Boeing Service Letter 737-SL-31-059

c. Boeing Service Related Problem (SRP) 737NG-SRP-31-0048

d. Service Bulletin Index D6-19567

e. 737-600/700/800/900 Aircraft Maintenance Manual (AMM) 20-15-11, 31-62-11, 31-62-21

f. 737NG Fleet Team Digest (FTD) 31-10001

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g. Honeywell Service Bulletin 4091900-31-0002

2. Data Supplied with this Service Bulletin:

None.

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

None.

K. Publications Affected

1. Publications:

Publication Chapter-Section

737 Wiring Diagram Manual Equipment List

737 Illustrated Parts Catalog 31-62

2. Damage Tolerance Based Structural Inspections:

Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue

Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the

Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary.

L. Interchangeability and Intermixability of Parts

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

information.

M. Software Accomplishment Summary

1. System affected by this change: The Common Display System (CDS) Display Units.

2. Software changes which affect operational procedures: None.

3. Other software improvements: Improves video contrast for DU part number 4091900-934, Video

Capable Display Unit.

More data about this change is in 737-SL-31-059.

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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. As an alternative, operators can purchase the parts from Boeing Spares. This service bulletin

does not show the Boeing price and supply data.

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

None.

2. Parts and Materials Supplied by the Operator

Group 1, Configuration 1:

Part Number / QTY Name Existing Part Number Notes

Specification

4091900-944 1 DISPLAY UNIT - VIDEO 4091900-934 and/or (a) (b) (c) (d)

4091900-942 5 or 6 DISPLAY UNIT 4091900-932 (a) (b) (c) (d)

(a) This part is used in production.

(b) You can get the new part by reworking the existing part as given in Honeywell Service Bulletin 4091900-

31-0002.

(c) The Common Display System (CDS) Phase 3A Display Units (DU)s can be obtained directly from the

supplier: Honeywell International Inc. (58960), 21111 North 19th Avenue, Phoenix, Arizona 85027-2708,

USA

(d) A total of 6 DUs are replaced. Some airplanes have 5 part number 4091900-932 and 1 part number

4091900-934 units installed. Some airplanes have 6 part number 4091900-932 units installed.

Media Set Part Num- Media Set Name Software Part Number Software Name Notes

ber

3110-HNP-03A-06 CDS DU DB (a) (b) (c)

(3110HNP03A06)

PS4081887-906 31 CDS DU DB

(a) This software part number is used in production. Operators may already have this media set.

(b) Do not install previous versions of this software after installation of the new software part number.

(c) The media set can be obtained directly from the supplier: Honeywell International Inc. (58960), 21111

North 19th Avenue, Phoenix, Arizona 85027-2708, USA

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3. Parts Modified and Reidentified

Group 1, Configuration 1:

Existing Part QTY Name New Part Number Notes

Number

4091900-934 1 DISPLAY UNIT - VIDEO 4091900-944 (a)

4091900-932 5 or 6 DISPLAY UNIT 4091900-942 (a)

(a) A total of 6 DUs are replaced. Some airplanes have 5 part number 4091900-932 and 1 part number

4091900-934 units installed. Some airplanes have 6 part number 4091900-932 units installed.

Group 1, Configuration 2:

No parts are necessary.

4. Parts Removed and Not Replaced

None.

D. Parts Necessary to Change Spares

None.

E. Special Tooling - Price and Availability

None.

F. Special Tooling Necessary to do this Service Bulletin

No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance

and overhaul tools in the manuals given in Paragraph 1.J., References, can be necessary. Examine

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

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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. The work instructions are divided into work packages. Task Hours and Elapsed Hours

for each package are given in Paragraph 1.G., Manpower. You can do each work

package independently but Work Package 2 must be accomplished after Work

Package 1.

4. These work instructions refer to procedures included in other Boeing documents.

When the words "refer to" are used and the operator has an accepted alternative

procedure, the accepted alternative procedure can be used. When the words "in

accordance with" are included in the instruction, the procedure in the Boeing document

must be used.

5. Refer to 737-600/700/800/900 AMM 20-15-11 for on-airplane software installation

maintenance practices and data transfer times, as accepted procedures.

B. WORK INSTRUCTIONS

WORK PACKAGE 1 - SOFTWARE INSTALLATION

1. Get access to the flight compartment.

2. Install the software below into the Display Electronics Units (DEU)s. Refer to 737-600/700/800/900

AMM 31-62-21 as an accepted procedure.

Software Name Software Part Number Media Set Part Number More Data

3110-HNP-03A-06 PS4081887-906

(3110HNP03A06)

CDS DU DB

3. Put the airplane back to a serviceable condition.

Group 1, Configuration 1:

WORK PACKAGE 2 - DISPLAY UNIT REPLACEMENT

1. Get access to the flight compartment.

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2. Replace the existing Phase 3 Common Display System (CDS) Display Units (DU)s with new Phase

3A CDS DUs as listed below. Refer to 737-600/700/800/900 AMM 31-62-11 as an accepted

procedure.

Part Name Existing Part Number New Part Number More Data

DISPLAY UNIT - VIDEO 4091900-934 4091900-944 (a)

DISPLAY UNIT 4091900-932 4091900-942 (a)

(a) Honeywell Service Bulletin 4091900-31-0002 can be used to change the DU.

3. Put the airplane back to a serviceable condition.

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