### 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.9E991 ECCN: 

## 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 Unpublished Work.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.

Original Issue: November 29, 2012 737-31-1471 1 of 28 3.0Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 2 of 28 **BOEING SERVICE BULLETIN 737-31-1471**

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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 3 of 28 **BOEING SERVICE BULLETIN 737-31-1471**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 4 of 28 **BOEING SERVICE BULLETIN 737-31-1471**

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.
**Reference Affected**  **Planning Data** Paragraph 1.A.2., Spares Affected Yes Spares Affected Paragraph 1.E., Compliance and Paragraph 1.F., Approval Yes AD Related Paragraph 1.H., Weight and Balance Changes No Weight and Balance Change Paragraph 1.I., Electrical Load Data No Electrical Load Changed Paragraph 1.K., Publications Affected Yes Publications Affected

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 5 of 28**Reference Affected**  **Planning Data** Paragraph 1.K., Publications Affected No Airplane Flight Operations Affected (Flight CrewOperations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/Parts No Kits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator Yes Operator Supplied Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin No Special Tooling Required

**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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 6 of 28 **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.
**DESCRIPTION CONFIGURATION**  **GROUP** 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 **Group Variable Number** 1 YA001 - YA099 1 YA101 - YA199 1 YA201 - YA211

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 7 of 28**Group Variable Number** 1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 8 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 9 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 10 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 11 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 12 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 13 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 14 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 15 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 16 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 17 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 18 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 19 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 20 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Group**  **Variable Number**1 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 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 21 of 28 **BOEING SERVICE BULLETIN 737-31-1471 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 Zone**  **Model** 211, 212 737-600, 737-700, 737-700C, 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 22 of 28 **BOEING SERVICE BULLETIN 737-31-1471 Work Package 1 - Software Installation**  **Elapsed Hours Task Hours**  **Number of Persons Task**  0.25 0.25 1 Open Access 0.50 0.50 1 Software installation 0.25 0.25 1 Close Access 1.00 1.00 TOTAL FOR EACH AIRPLANE 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**  **Elapsed Hours Task Hours**  **Number of Persons Task**  0.25 0.25 1 Open Access 0.50 0.50 1 Replace Display Unit 0.25 0.25 1 Close Access 1.00 1.00 TOTAL FOR EACH AIRPLANE 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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 23 of 28 **BOEING SERVICE BULLETIN 737-31-1471**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: **Chapter-Section Publication**  Equipment List 737 Wiring Diagram Manual 31-62 737 Illustrated Parts Catalog 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 24 of 28 **BOEING SERVICE BULLETIN 737-31-1471 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:**

**Notes Existing Part Number**  **Name QTY**  **Part Number / Specification**  (a) (b) (c) (d) 4091900-934 and/or DISPLAY UNIT - VIDEO 1 4091900-944 (a) (b) (c) (d) 4091900-932 DISPLAY UNIT 5 or 6 4091900-942 (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.

**Notes Software Name**  **Software Part Number Media Set Name**  **Media Set Part Num- ber**  (a) (b) (c) CDS DU DB 3110-HNP-03A-06 (3110HNP03A06) 31 CDS DU DB PS4081887-906 (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

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 25 of 28 **BOEING SERVICE BULLETIN 737-31-1471**3. Parts Modified and Reidentified **Group 1, Configuration 1:**

**Notes New Part Number**  **Name QTY**  **Existing Part Number**  (a) 4091900-944 DISPLAY UNIT - VIDEO 1 4091900-934 (a) 4091900-942 DISPLAY UNIT 5 or 6 4091900-932 (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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 26 of 28 **BOEING SERVICE BULLETIN 737-31-1471 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.

**More Data Media Set Part Number**  **Software Part Number Software Name**  PS4081887-906 3110-HNP-03A-06 (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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 27 of 28 **BOEING SERVICE BULLETIN 737-31-1471**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.

**More Data New Part Number**  **Existing Part Number Part Name**  (a) 4091900-944 4091900-934 DISPLAY UNIT - VIDEO (a) 4091900-942 4091900-932 DISPLAY UNIT (a) Honeywell Service Bulletin 4091900-31-0002 can be used to change the DU. 3. Put the airplane back to a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 29, 2012 737-31-1471 28 of 28 **BOEING SERVICE BULLETIN 737-31-1471**