April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 40 

### Commercial **Airplane Group**  

# 737 Service Bulletin

**Number: 737-25-1491** Date: April 23, 2007 ATA System: 2566
**SUBJECT:** EQUIPMENT/FURNISHINGS - Emergency - Door Mounted Escape System - Change Evacuation Slide Inflation Valve Regulator 

## BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2007 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter. Boeing also claims copyright in this document as a compilation and/or collective work. This document includes proprietary information owned by The Boeing Company and/or one or more third parties. Treatment of the document and the information it contains is governed by contract with Boeing. For more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124. Boeing, 707, 717, 727, 737, 747, 757, 767, 777, BBJ, BOEING BUSINESS JET, DC-8, DC-9, DC-10, MD-10, MD-11, MD-80, MD-90, the Boeing logo and the Boeing livery are among the trademarks owned by Boeing or its subsidiaries. No intellectual property license (express or implied) is granted in connection with this document or otherwise.**BLANK PAGE** April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 2 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

BLANK PAGE**Table of Contents** April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 3 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

**Table of Contents** Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . 33 3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . 33 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . 33 2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . 35 3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 36 3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 FIGURE 1: CONCURRENT REQUIREMENT LOGIC DIAGRAM . . . . . . . . . . . . . . . . . . . . 39 FIGURE 2: ESCAPE SLIDE INSPECTION - ALL GROUPS. . . . . . . . . . . . . . . . . . . . . . . 40**Table of Contents** April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 4 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

BLANK PAGEApril 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 5 of 40 

### Commercial **Airplane Group**  

# 737 Service Bulletin

**Number: 737-25-1491** 

### Summary Date: April 23, 2007 ATA System: 2566
**SUBJECT:** EQUIPMENT/FURNISHINGS - Emergency - Door Mounted Escape System - Change Evacuation Slide Inflation Valve Regulator

**CONCURRENT REQUIREMENTS** For the given configuration groups the changes given in this service bulletin cannot be made unless the changes given in the service bulletin(s) that follow are made: **Company Service Bulletin Revision Level Description** Goodrich 5A3086/5A3088- 25-302 Original Issue, dated November 13, 1998 through Revision 1, dated February 19, 2001 Equipment/FurnishingsEvacuationSystemsIncorporate Product Improvements on B737NG Slides. Goodrich 5A3086/5A3088- 25-336 Original Issue, dated June 17, 2002 Equipment/FurnishingsEvacuation Systems-Replace Angled Trigger Housing on Slide Regulator Valve. Goodrich 5A3307-25-309 Original Issue, dated October 29, 1999 Equipment/FurnishingsEvacuation Systems-Install Trigger Housing Cover on 737NG Slides. Goodrich 25-308 Original Issue, dated January 21, 2000 Equipment/FurnishingsEvacuation Systems-Replace Rod in Regulator Valve on B737NG Slides.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 6 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

For airplanes in Group 1, delivered with escape slide assemblies 5A3086-3 (forward) and 5A3088-3 (aft), you cannot make the changes given in this service bulletin unless the changes given in Boeing Service Bulletin 737- 25-1404 as required by FAA AD 2001-15-01 have been incorporated on the escape slide latch assembly. Additionally, Boeing Service Bulletin 737-25-1475 and Goodrich Service Bulletin 25-308 are incorporated on the escape slide assembly prior to or concurrent with this service bulletin. Refer to Section 3, Figure 1 for a logic diagram of concurrent requirements for modifying the escape slide assembly. 1. If escape slide assembly 5A3307-1 is installed as spares, then Goodrich Service Bulletin 25-308 is incorporated prior to or concurrent with this service bulletin. 2. If escape slide assembly 5A3307-3 is installed as spares and Goodrich Service Bulletin number 5A3307- 25-309, which modified the 5A3307-1 into a 5A3307-3 is stenciled on the girt, then Goodrich Service Bulletin 25-308 is incorporated prior to or concurrent with this service bulletin. Goodrich 25-338 Original Issue, dated July 7, 2003 through Revision 1, dated March 31, 2004 Equipment/FurnishingsEvacuation Systems-Modify Regulator With New Vespel Piston Plug and Modify 5A3307 Slide Valise. Boeing 737-25-1403 Original Issue, dated November 29, 2001 EQUIPMENT/ FURNISHINGS -EMergency -DoorMounted Escape System - Inflation Cylinder Trigger Housing Cover Installation Boeing 737-25-1404 Original Issue, dated May 25, 2000 through Revision 1, dated April 18, 2002 EQUIPMENT/ FURNISHINGS - Emergency - Door-Mounted Escape System - Latch Assembly Modification Boeing 737-25-1475 Original Issue, dated November 26, 2002 EQUIPMENTAND FURNISHINGS - DoorMounted Escape System - Replace Trigger Housing on Slide Regulator Valve **Company Service Bulletin Revision Level Description**April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

3. If escape slide assembly 5A3307-3 in its original manufactured configuration, as delivered from Boeing or Goodrich, is installed as spares, there is no prior or concurrent service bulletin incorporation required with this service bulletin. For airplanes in Group 2, delivered with escape slide assembly 5A3307-1, you cannot make the changes given in this service bulletin unless the changes given in Boeing Service Bulletins 737-25-1403 and 737-25-1404 are incorporated as required by FAA AD 2001-15-01 on the escape slide and latch assemblies. Additionally, Goodrich Service Bulletin 25-308, if applicable, is incorporated on the escape slide assembly prior to or concurrent with this service bulletin. Refer to Section 3, Figure 1 for a logic diagram of concurrent requirements for modifying the escape slide assembly. 1. If escape slide assembly 5A3307-1 has been modified into a 5A3307-3 by incorporation of Goodrich Service Bulletin number 5A3307-25-309, which is stenciled on the girt, then the changes given in Goodrich Service Bulletin 25-308 are made prior to or concurrent with this service bulletin. 2. If escape slide assembly 5A3307-3 in its original manufactured configuration, as delivered from Boeing or Goodrich, is installed as spares, there is no prior or concurrent service bulletin incorporation required with this service bulletin. 3. If escape slide assemblies 5A3086-3 (forward) or 5A3088-3 (aft) are installed as spares, then Boeing Service Bulletin 737-25-1475 and Goodrich Service Bulletin 25-308 are incorporated prior to or concurrent with this service bulletin. For airplanes in Group 3, delivered with escape slide assembly 5A3307-3, you cannot make the changes given in this service bulletin unless the changes given in Boeing Service Bulletin 737-25-1404, if applicable, as required by FAA AD 2001-15-01 have been incorporated on the escape slide latch assembly. Refer to Section 3, Figure 1 for a logic diagram of concurrent requirements for modifying the escape slide assembly. 1. If the 5A3307-3 escape slide is installed as spares and Goodrich Service Bulletin number 5A3307-25-309 which modified the 5A3307-1 into a 5A3307-3 is stenciled on the girt, then Goodrich Service Bulletin 25- 308 is incorporated prior to or concurrent with this service bulletin. 2. If escape slide assemblies 5A3086-3 (forward) or 5A3088-3 (aft) are installed as spares, then Boeing Service Bulletin 737-25-1475 and Goodrich Service Bulletin 25-308 are incorporated prior to or concurrent with this service bulletin.

**BACKGROUND** There are three reports of a Goodrich 5A3307 series escape slide, installed on 737 Next Generation airplanes, which did not inflate when deployed. These escape slides did not inflate even after the back-up handle was pulled and the firing cable was pulled out of the valve regulator assembly. Two reports occurred during functional tests at Boeing prior to delivery. The third report occurred during an operational test on an in-service airplane. The escape slides did not inflate due to the incorrect installation of a piston rod in the valve regulator assembly of the escape slide. This valve regulator assembly is also used on the 5A3086 and 5A3088 series escape slides. If the rod is installed upside down, the valve regulator assembly can be charged but the upside down rod will prevent the regulator from activating when the firing cable is pulled. There have also been several reports of Goodrich 5A3307 series escape slides not inflating automatically when deployed, however, these escape slides did inflate after the back-up handle was pulled. Automatic inflation did not occur due to trigger housing cover deflecting the inflation cable and not allowing sufficient force to pull the inflation cable from the valve.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 8 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

This service bulletin contains instructions which will prevent the incorrect installation of the piston rod in the inflation valve regulator assembly. This service bulletin also contains instructions to remove the cover from the trigger housing and modify the valise to add a larger pad to the valise to provide the same shielding function as the trigger housing cover. This modification ensures that enough force is applied to the inflation cable for extraction from the regulator. If the escape slide fails to inflate during deployment, it can result in the exit not being usable during an emergency evacuation. The changes given in this service bulletin cannot be made without prior or concurrent incorporation of FAA AD 2001-15-01, which calls out Boeing Service Bulletins 737-25-1403 and 737-25-1404. Boeing Service Bulletin 737-25-1404 modifies the escape slide latch assembly and compartment. Boeing Service Bulletin 737-25-1403 calls out Goodrich Service Bulletin 5A3307-25-309, which modifies the escape slide. Incorporation of Goodrich Service Bulletin 25-338 as called out in this service bulletin is considered an Alternate Means of Compliance (AMOC) to the 5A3307-25-309 Goodrich Service Bulletin. Therefore, Goodrich Service Bulletin 25-338 can be incorporated in lieu of the 5A3307-25-309 service bulletin and remain in compliance with FAA AD 2001-15-01.

**ACTION** (PRR 38546) Remove the compartment-slide assemblies from the Entry and Service Doors, forward and aft. Remove the escape slide assemblies from the compartment assemblies. Change the escape slide assemblies as given in the Goodrich Service Bulletin 25-338. Install the modified escape slide assemblies in the compartment assemblies. Install the compartment-slide assemblies on the Entry and Service Doors, forward and aft. Group 1 were delivered with escape slide Goodrich part number 5A3086-3 (forward) and 5A3088-3 (aft). Group 2 were delivered with escape slide Goodrich part number 5A3307-1 (forward and aft). Group 3 were delivered with escape slide Goodrich part number 5A3307-3 (forward and aft).

**EFFECTIVITY** Group 1 Airplanes: 737-600, -700, -800 airplane line numbers 1 thru 227 and YA030-YA133. Group 2 Airplanes: 737-600, -700, -800 airplane line numbers 228 thru 477 except YA030-YA058. Group 3 airplanes: 737-600, -700,-700C, -800, -900 airplane line numbers 478 thru 1314 except YA059 thru YA131.

**NOTE:** YA134 thru YA139 incorporated the changes described in PRR 38546 by way of Modification Revision Memo Number MR 39286-16 prior to delivery, therefore these effectivities are not applicable to this service bulletin.

**COMPLIANCE** Boeing recommends that the change to the escape slide be done within 36 months after the date on this service bulletin. Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2001-15-01 is related to this service bulletin.

**INDUSTRY SUPPORT INFORMATION** Boeing warranty remedies are not available for the escape slide changes given in this service bulletin.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

**MANPOWER**

Prior and concurrent Goodrich or Boeing Service Bulletin changes, if required, are not included in the total task time.

**MATERIAL INFORMATION** Operator Supplied Parts/Materials. Refer to Paragraph 2.A., Material - Price and Availability. **Total Task Hours Elapsed Hours** 2.25 2.25April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 10 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

INSPECT/CHANGE ESCAPE SLIDE ASSEMBLY



### A FWD ESCAPE SLIDE INSTALLATION SEE AW48849April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 11 of 40 

### Commercial **Airplane Group**  

# 737 Service Bulletin

**Number: 737-25-1491** Date: April 23, 2007 ATA System: 2566
**SUBJECT:** EQUIPMENT/FURNISHINGS - Emergency - Door Mounted Escape System - Change Evacuation Slide Inflation Valve Regulator

**1. PLANNING INFORMATION A. Effectivity**  1. Airplanes Refer to Service Bulletin Index Document D6-19567 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 38546 for data about this change.

**NOTE:** YA134 thru YA139 incorporated the changes described in PRR 38546 by way of Modification Revision Memo Number MR 39286-16 prior to delivery, therefore these effectivities are not applicable to this Service Bulletin.

Airplane models:

737-600 737-700 737-700C 737-800 737-900 IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER AEJ SERVICES, LLC (AJL) 3 YG037 **GROUP CONFIGURATION DESCRIPTION** 1 - 737-600, -700, -800 airplane line numbers 1 thru 227 and YA030-YA133. 2 - 737-600, -700, -800 airplane line numbers 228 thru 447 except YA030-YA058. 3 - 737-600, -700, -700C, -800, -900 airplane line numbers 478 thru 1314 except YA059 thru YA131.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 12 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

AEROMEXICO (AMX) 3 YB207 AIR ALGERIE (ALG) 3 YD101–YD107 YE301–YE305 AIR ASTANA (AKZ) 3 YA356–YA357 YC151 AIR BERLIN (BER) 1 YC051–YC057 YC701 YC703 YC705 2 YC058–YC059 YC461 3 YA614–YA615 YB201 YB203 YC060–YC070 YD151–YD157 YD218 AIR CHINA (BEJ) 2 YC943–YC944 YC981–YC982 3 YA681–YA682 YC945–YC951 YC983 AIR CHINA CHONGQING BRANCH (CHO) 2 YC941–YC942 AIR CHINA SOUTHWEST BRANCH (XIN) 3 YC426–YC428 YE201–YE206 AIR EUROPA (ARE) 2 YC761–YC766 3 YC767–YC770 YC907 YD206–YD209 AIR MAURITANIE (MAR) 1 YA302 AIR NATIONAL GUARD (USK) 3 YG044 YG067 YG069 AIR PACIFIC (APC) 1 YA291 2 YC931–YC932 AIR SAHARA (SAQ) 1 YA253–YA254 YA731 YG001 2 YC462 YC901–YC902 3 YA351 YB204–YB205 AIR SENEGAL INTERNATIONAL (SNG) 3 YA683–YA684 AIR SHAMROCK (SHI) 1 YG016 AJET (HCY) 3 YC416–YC417April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 13 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

ALASKA AIRLINES (ASA) 2 YA841–YA847 3 YA848–YA860 YD501–YD508 ALOHA AIRLINES (ALO) 2 YA608 YA610 YA732–YA733 3 YA627–YA629 AMERICAN AIRLINES (AAL) 1 YC801–YC804 2 YC805–YC827 3 YC828–YC877 AMIRI FLIGHT (ABD) 2 YG023 3 YD410 YG026 ARAMCO ASSOCIATED COMPANY (RAS) 3 YB151–YB153 YG601–YG602 ASTRAEUS, LTD. (AUA) 3 YA671–YA672 ATA AIRLINES, INC. (AAT) 3 YD301 YD304–YD305 YD308 YD310 YD314–YD315 YD317–YD319 YD321 YD323 AUSTRALIAN WEDGETAIL PROGRAM (ZVI) 3 YG089 YG201 AUSTRIAN (AUL) 1 YC381–YC382 3 YB171–YB172 YC383 YE171–YE172 BANCO SAFRA (BNS) 3 YG040 BEL AIR LIMITED (ULL) 2 YG022 BELAVIA (ITU) 3 YD408 BNJ SALES COMPANY (BNJ) 2 YG031 YG033 BOEING DEMONSTRATOR JET (BCJ) 3 YG035–YG036 BOETTI AIR INC. (BBI) 3 YG068April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 14 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

BWIA WEST INDIES AIRWAYS (TTA) 2 YC136 3 YC137–YC141 YJ001 CHARTWELL (CHP) 2 YG017 CHINA AIRLINES (CHI) 1 YC571 YC574–YC578 2 YC579–YC580 3 YC581–YC583 YC589 CHINA EASTERN AIRLINES (CEA) 3 YB206 YB561–YB568 CHINA EASTERN AIRLINES WUHAN (WUH) 3 YD171–YD172 CHINA EASTERN YUNNAN AIRLINES (YUN) 1 YA811–YA812 2 YA813–YA814 CHINA SOUTHERN AIRLINES (GUN) 3 YC027 YC921 YD313 YD316 YD320 YD322 YD324 YD326–YD327 YD329 YJ671–YJ677 CHINA XINJIANG AIRLINES (XIJ) 3 YA255–YA256 YA645 YA656 COLOMBIAN AIR FORCE (CLB) 2 YG028 COMMONWEALTH OF AUSTRALIA (GAU) 3 YG072 YG075 CONTINENTAL AIRLINES (CAL) 1 YA501–YA521 YC321–YC337 2 YA522–YA536 YC338–YC362 3 YC363–YC380 YD601–YD612 YJ501–YJ517 COPA AIRLINES (COP) 2 YA755–YA756 YA961–YA963 3 YA964–YA970 CYPRUS TURKISH AIRLINES (KTHY) (KHT) 2 YD021 3 YC467 YD022 DALLAH AL BARAKA (KAM) 2 YG063April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 15 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

DELTA AIR LINES (DAL) 1 YC601–YC606 2 YC607–YC618 3 YC619–YC655 YC681–YC696 DOBRO LIMITED (DOB) 1 YG008 DUBAI AIR WING (DAW) 1 YG007 3 YD402 E & A AVIATION (RSB) 3 YG082 EASYJET (EZY) 3 YB101–YB122 EIE EAGLE (EIE) 3 YD409 EL AL ISRAEL AIRLINES (ELA) 1 YC405 YC591 2 YA881–YA882 YC592–YC593 3 YC147 YD219 EUROCYPRIA AIRLINES (ECY) 3 YC186–YC189 EVA AIR (EVA) 3 YG083 EXCEL AIRWAYS (SBE) 1 YC111–YC112 3 YC113 YC436–YC437 YC903 YC906 FLYGLOBESPAN.COM (FGS) 2 YE107–YE108 FORD AIR SERVICES (FMC) 1 YA542 FUNAIR (FUN) 2 YG027 FUTURA (FUA) 2 YC407 YC451 3 YC463–YC464 YC466 YC727 GAMA AVIATION LTD (GAV) 1 YG010April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 16 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

GARUDA INDONESIA (GIA) 3 YJ473 YJ475 GATX FINANCIAL CORPORATION (GAX) 3 YC728 GE CAPITAL CORPORATION (GEF) 3 YD325 GE CORPORATE AIR TRANSPORT (GEB) 1 YG003 2 YG012 GERMANIA (GER) 1 YA231 YA233 YA235–YA240 GLOBAL JET LUXEMBOURG (SIQ) 3 YD404 YG038 GOL AIRLINES (GOT) 1 YA201–YA202 YA232 YA234 YA241–YA242 YA251–YA252 YA321 YA571–YA572 YA602 YA605 2 YA607 YA611–YA612 3 YA211 YA221 YA323 YA646–YA648 YA650 YA657 YB202 YB271 YD256–YD257 YD302–YD303 YD306–YD307 YJ471–YJ472 GOVT OF EQUATORIAL GUINEA (EGR) 3 YG085 HAINAN AIRLINES (HNA) 1 YA603–YA604 YA606 YC126 YC401 YC404 2 YA544 YA546 YC127 YC452 YC971 3 YC409 YC972–YC978 YD042–YD045 YD216 HAMBURG INTERNATIONAL (HAU) 1 YA574–YA576 2 YA577–YA578 3 YB276 HAPAG-LLOYD FLUG (HAP) 1 YC001–YC009 2 YC010–YC013 3 YC014–YC026 YC028–YC030 ICA BERMUDA (IBL) 2 YG062 ILFC (ILF) 2 YA322April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 17 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

JET AIRWAYS (JPL) 1 YA751–YA754 YC402–YC403 YC731–YC732 2 YA609 YC733–YC735 3 YA621–YA622 YA734 YB181–YB184 YC736–YC741 YD309 YD311–YD312 YD328 YD330 YD571 JET AVIATION (JTA) 1 YG015 3 YD405 JET AVIATION BUSINESS JET INC (JBJ) 3 YG071 KENYA AIRWAYS (KEN) 3 YA635–YA636 YA641 KLM - ROYAL DUTCH AIRLINES (KLM) 1 YC781 2 YC782–YC784 3 YC785–YC793 YD531–YD534 KOREAN AIR (KAL) 2 YC441 3 YC442–YC448 YD121–YD126 YD541–YD547 LAS VEGAS JET (LVJ) 1 YG002 LIMITED BRAND INC. (LII) 1 YG005 LINEAS AEREAS AZTECA (AZX) 1 YA601 3 YB501–YB502 LOWA CORPORATION (LWA) 3 YD406 MAERSK AIR (MRS) 1 YA204–YA206 YA573 2 YA207 3 YA208–YA210 MALEV HUNGARIAN AIRLINES (HGA) 3 YA371–YA372 YC201 MANDARIN AIRLINES (MDN) 3 YC587–YC588 MGM MIRAGE (MGM) 3 YG042April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 18 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

MIAMI AIR (MIB) 3 YC146 YC904–YC905 MID EAST JET (SKL) 1 YG013–YG014 2 YG021 3 YD407 MONGOLIAN AIRLINES MIAT (MNG) 3 YJ476 N720CH, INC. (NCH) 2 YG019 NATIONAL (NJI) 2 YG032 NATIONAL AIR SERVICES (NAR) 3 YD403 YG080 YG086–YG087 NEOS (NEO) 3 YJ002 YJ631–YJ632 NEWS AMERICA INCORPORATED (NWS) 2 YG020 OMAN AIR (OMR) 3 YA366–YA367 YB551 YC171 ORIENT GLOBAL AVIATION (VTU) 1 YG011 PEGASUS AIRLINES (PGS) 1 YC391 YC572–YC573 2 YC406 3 YC392 YC410 YC412 YC414–YC415 YC455 YD025 YD391 PICTON II (UNU) 1 YG006 PRIME AVIATION KZ (PKZ) 3 YG077 PRIVATAIR (PTS) 2 YG018 YG064 QANTAS (QAN) 3 YC878–YC892 REPUBLIC OF CHINA AIR FORCE (CAF) 2 YC396April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 19 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

ROYAL AIR MAROC (RAM) 1 YC301–YC302 2 YA831–YA832 3 YA833–YA835 YC303–YC304 ROYAL JET (RJT) 2 YG024–YG025 ROYAL MALAYSIA AIR FORCE (MAF) 2 YG061 RYANAIR (RYR) 1 YC471 2 YC472–YC475 3 YC476–YC499 YJ801–YJ807 SAFAIR (SFA) 3 YD481–YD483 SAMSUNG TECHWIN CO. (SST) 3 YG079 SAS (SAS) 1 YE001 YE003–YE005 YE007 YE009 YE101–YE104 2 YE011 YE016 YE018 YE020 YE105–YE106 3 YD046–YD049 YD052 YD055 YD082 YE051 SAS BRAATHENS (BRT) 1 YA311 YA543 YE002 YE006 YE008 YE010 2 YA545 YA547 YB001–YB004 YE012–YE015 YE017 YE019 YE109 3 YA548–YA552 YB005–YB006 YD041 YD050–YD051 YD053–YD054 YD081 YD083–YD084 SAS INSTITUTE INC. (SJS) 3 YG041 SAUDI OGER (SAO) 3 YD401 YG073 SHANGHAI AIRLINES (SHA) 1 YA272 YA312–YA313 2 YA314 3 YA891–YA892 YC166–YC169 YJ871 SHENZHEN AIRLINES (SHZ) 1 YA721–YA722 3 YA613 YA626 YA686–YA687 YA801–YA803 YA809 YC153–YC154 YC411 YC413April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 20 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

SIGAIR (SIG) 2 YG034 SKY AIRLINES (SYC) 3 YC730 SOUTH AFRICAN AIRFORCE (SFF) 3 YG076 SOUTH AFRICAN AIRWAYS (SAA) 3 YC708–YC715 YC720–YC725 YD023–YD024 SOUTHERN AIRCRAFT SERVICES (HUZ) 1 YG009 SOUTHERN CALIFORNIA AVIATION (SCZ) 3 YC729 SOUTHWEST AIRLINES (SWA) 1 YA001–YA099 YA101–YA133 YA271 YA301 YA541 SPICEJET (ROJ) 1 YC704 2 YC707 3 YC465 STERLING AIRLINES A/S (STR) 1 YA203 YC101–YC103 YC751–YC752 3 YC104 SUN COUNTRY AIRLINES (SCA) 1 YC121 3 YC152 YC155–YC156 SUNEXPRESS (SNS) 1 YC702 2 YC706 3 YC453 YD201–YD202 YJ477–YJ480 SWIFLITE AIRCRAFT CORPORATION (OSF) 3 YG078 TAROM - ROMANIAN AIR TRANSPORT (TRM) 3 YB161–YB162 TBN AVIATION AVV (TBE) 2 YG029 THOMSONFLY (BRI) 2 YD001 3 YD002–YD007April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 21 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

TRACINDA CORP. (TRD) 1 YG004 TRANSAVIA AIRLINES (TAV) 1 YC071–YC073 2 YC074–YC076 3 YB521–YB524 YB541 YC077–YC082 YC091–YC094 TRAVEL SERVICE (TSF) 2 YC408 3 YC454 YC459 YD203 YJ474 TUI AIRLINES BELGIUM (TLB) 3 YD217 TUNISAIR (TUN) 2 YE151–YE153 YG030 3 YE154–YE157 TURKISH AIRLINES (THY) 1 YC501–YC506 2 YC507–YC517 3 YC518–YC526 TUTOR-SALIBA CORPORATION (TTS) 3 YG070 TY AIR (YIP) 2 YG066 UNITED STATES NAVY (USN) 3 YG501–YG506 US AIR FORCE (USF) 3 YG074 YG081 YG084 YG088 VIRGIN BLUE AIRLINES (VOZ) 3 YA336–YA345 YA649 YA658–YA659 YA685 YA688–YA691 YC421–YC422 YC922 YD251–YD254 WESTJET (WJI) 3 YB301–YB310 YB601–YB608 XIAMEN AIRLINES (XIA) 1 YA701–YA704 3 YA705–YA709 YEMENIA (YEM) 3 YC176–YC178 YONA (IOP) 3 YG043April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 22 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

ZEPHYR LIMITED (PFR) 3 YG039

IDENTIFICATION BY VARIABLE NUMBER **Variable Group** YA001–YA099 1 YA101–YA133 1 YA201–YA206 1 YA207 2 YA208–YA211 3 YA221 3 YA231–YA242 1 YA251–YA254 1 YA255–YA256 3 YA271–YA272 1 YA291 1 YA301–YA302 1 YA311–YA313 1 YA314 2 YA321 1 YA322 2 YA323 3 YA336–YA345 3 YA351 3 YA356–YA357 3 YA366–YA367 3 YA371–YA372 3 YA501–YA521 1 YA522–YA536 2 YA541–YA543 1 YA544–YA547 2 YA548–YA552 3 YA571–YA576 1 YA577–YA578 2 YA601–YA606 1 YA607–YA612 2 YA613–YA615 3 YA621–YA622 3 YA626–YA629 3 YA635–YA636 3April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 23 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

YA641 3 YA645–YA650 3 YA656–YA659 3 YA671–YA672 3 YA681–YA691 3 YA701–YA704 1 YA705–YA709 3 YA721–YA722 1 YA731 1 YA732–YA733 2 YA734 3 YA751–YA754 1 YA755–YA756 2 YA801–YA803 3 YA809 3 YA811–YA812 1 YA813–YA814 2 YA831–YA832 2 YA833–YA835 3 YA841–YA847 2 YA848–YA860 3 YA881–YA882 2 YA891–YA892 3 YA961–YA963 2 YA964–YA970 3 YB001–YB004 2 YB005–YB006 3 YB101–YB122 3 YB151–YB153 3 YB161–YB162 3 YB171–YB172 3 YB181–YB184 3 YB201–YB207 3 YB271 3 YB276 3 YB301–YB310 3 YB501–YB502 3 YB521–YB524 3 YB541 3 **Variable Group**April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 24 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

YB551 3 YB561–YB568 3 YB601–YB608 3 YC001–YC009 1 YC010–YC013 2 YC014–YC030 3 YC051–YC057 1 YC058–YC059 2 YC060–YC070 3 YC071–YC073 1 YC074–YC076 2 YC077–YC082 3 YC091–YC094 3 YC101–YC103 1 YC104 3 YC111–YC112 1 YC113 3 YC121 1 YC126 1 YC127 2 YC136 2 YC137–YC141 3 YC146–YC147 3 YC151–YC156 3 YC166–YC169 3 YC171 3 YC176–YC178 3 YC186–YC189 3 YC201 3 YC301–YC302 1 YC303–YC304 3 YC321–YC337 1 YC338–YC362 2 YC363–YC380 3 YC381–YC382 1 YC383 3 YC391 1 YC392 3 YC396 2 **Variable Group**April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 25 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

YC401–YC405 1 YC406–YC408 2 YC409–YC417 3 YC421–YC422 3 YC426–YC428 3 YC436–YC437 3 YC441 2 YC442–YC448 3 YC451–YC452 2 YC453–YC455 3 YC459 3 YC461–YC462 2 YC463–YC467 3 YC471 1 YC472–YC475 2 YC476–YC499 3 YC501–YC506 1 YC507–YC517 2 YC518–YC526 3 YC571–YC578 1 YC579–YC580 2 YC581–YC583 3 YC587–YC589 3 YC591 1 YC592–YC593 2 YC601–YC606 1 YC607–YC618 2 YC619–YC655 3 YC681–YC696 3 YC701–YC705 1 YC706–YC707 2 YC708–YC715 3 YC720–YC725 3 YC727–YC730 3 YC731–YC732 1 YC733–YC735 2 YC736–YC741 3 YC751–YC752 1 YC761–YC766 2 **Variable Group**April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 26 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

YC767–YC770 3 YC781 1 YC782–YC784 2 YC785–YC793 3 YC801–YC804 1 YC805–YC827 2 YC828–YC892 3 YC901–YC902 2 YC903–YC907 3 YC921–YC922 3 YC931–YC932 2 YC941–YC944 2 YC945–YC951 3 YC971 2 YC972–YC978 3 YC981–YC982 2 YC983 3 YD001 2 YD002–YD007 3 YD021 2 YD022–YD025 3 YD041–YD055 3 YD081–YD084 3 YD101–YD107 3 YD121–YD126 3 YD151–YD157 3 YD171–YD172 3 YD201–YD203 3 YD206–YD209 3 YD216–YD219 3 YD251–YD254 3 YD256–YD257 3 YD301–YD330 3 YD391 3 YD401–YD410 3 YD481–YD483 3 YD501–YD508 3 YD531–YD534 3 YD541–YD547 3 **Variable Group**April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 27 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

2. Spares Affected Inspect your spares supply for the parts or components identified in Paragraph 2.C., Parts Necessary for Each Airplane. If any parts or components are found, refer to Paragraph 2.C. for the recommended use. YD571 3 YD601–YD612 3 YE001–YE010 1 YE011–YE020 2 YE051 3 YE101–YE104 1 YE105–YE109 2 YE151–YE153 2 YE154–YE157 3 YE171–YE172 3 YE201–YE206 3 YE301–YE305 3 YG001–YG011 1 YG012 2 YG013–YG016 1 YG017–YG025 2 YG026 3 YG027–YG034 2 YG035–YG044 3 YG061–YG064 2 YG066 2 YG067–YG089 3 YG201 3 YG501–YG506 3 YG601–YG602 3 YJ001–YJ002 3 YJ471–YJ480 3 YJ501–YJ517 3 YJ631–YJ632 3 YJ671–YJ677 3 YJ801–YJ807 3 YJ871 3 **Variable Group**April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 28 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

**B. Concurrent Requirements** For the given configuration groups the changes given in this service bulletin cannot be made unless the changes given in the service bulletin(s) that follow are made: **Company Service Bulletin Revision Level Description** Goodrich 5A3086/5A3088- 25-302 Original Issue, dated November 13, 1998 through Revision 1, dated February 19, 2001 Equipment/FurnishingsEvacuationSystemsIncorporate Product Improvements on B737NG Slides. Goodrich 5A3086/5A3088- 25-336 Original Issue, dated June 17, 2002 Equipment/FurnishingsEvacuation Systems-Replace Angled Trigger Housing on Slide Regulator Valve. Goodrich 5A3307-25-309 Original Issue, dated October 29, 1999 Equipment/FurnishingsEvacuation Systems-Install Trigger Housing Cover on 737NG Slides. Goodrich 25-308 Original Issue, dated January 21, 2000 Equipment/FurnishingsEvacuation Systems-Replace Rod in Regulator Valve on B737NG Slides. Goodrich 25-338 Original Issue, dated July 7, 2003 through Revision 1, dated March 31, 2004 Equipment/FurnishingsEvacuation Systems-Modify Regulator With New Vespel Piston Plug and Modify 5A3307 Slide Valise.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 29 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

For airplanes in Group 1, delivered with escape slide assemblies 5A3086-3 (forward) and 5A3088-3 (aft), you cannot make the changes given in this service bulletin unless the changes given in Boeing Service Bulletin 737-25-1404 as required by FAA AD 2001-15-01 have been incorporated on the escape slide latch assembly. Additionally, Boeing Service Bulletin 737-25-1475 and Goodrich Service Bulletin 25-308 are incorporated on the escape slide assembly prior to or concurrent with this service bulletin. Refer to Section 3, Figure 1 for a logic diagram of concurrent requirements for modifying the escape slide assembly. 1. If escape slide assembly 5A3307-1 is installed as spares, then Goodrich Service Bulletin 25-308 is incorporated prior to or concurrent with this service bulletin. 2. If escape slide assembly 5A3307-3 is installed as spares and Goodrich Service Bulletin number 5A3307-25-309, which modified the 5A3307-1 into a 5A3307-3 is stenciled on the girt, then Goodrich Service Bulletin 25-308 is incorporated prior to or concurrent with this service bulletin. 3. If escape slide assembly 5A3307-3 in its original manufactured configuration, as delivered from Boeing or Goodrich, is installed as spares, there is no prior or concurrent service bulletin incorporation required with this service bulletin.

Boeing 737-25-1403 Original Issue, dated November 29, 2001 EQUIPMENT/ FURNISHINGS -EMergency -DoorMounted Escape System - Inflation Cylinder Trigger Housing Cover Installation Boeing 737-25-1404 Original Issue, dated May 25, 2000 through Revision 1, dated April 18, 2002 EQUIPMENT/ FURNISHINGS - Emergency - Door-Mounted Escape System - Latch Assembly Modification Boeing 737-25-1475 Original Issue, dated November 26, 2002 EQUIPMENTAND FURNISHINGS - DoorMounted Escape System - Replace Trigger Housing on Slide Regulator Valve **Company Service Bulletin Revision Level Description**April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 30 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

For airplanes in Group 2, delivered with escape slide assembly 5A3307-1, you cannot make the changes given in this service bulletin unless the changes given in Boeing Service Bulletins 737-25- 1403 and 737-25-1404 are incorporated as required by FAA AD 2001-15-01 on the escape slide and latch assemblies. Additionally, Goodrich Service Bulletin 25-308, if applicable, is incorporated on the escape slide assembly prior to or concurrent with this service bulletin. Refer to Section 3, Figure 1 for a logic diagram of concurrent requirements for modifying the escape slide assembly. 1. If escape slide assembly 5A3307-1 has been modified into a 5A3307-3 by incorporation of Goodrich Service Bulletin number 5A3307-25-309, which is stenciled on the girt, then the changes given in Goodrich Service Bulletin 25-308 are made prior to or concurrent with this service bulletin. 2. If escape slide assembly 5A3307-3 in its original manufactured configuration, as delivered from Boeing or Goodrich, is installed as spares, there is no prior or concurrent service bulletin incorporation required with this service bulletin. 3. If escape slide assemblies 5A3086-3 (forward) or 5A3088-3 (aft) are installed as spares, then Boeing Service Bulletin 737-25-1475 and Goodrich Service Bulletin 25-308 are incorporated prior to or concurrent with this service bulletin. For airplanes in Group 3, delivered with escape slide assembly 5A3307-3, you cannot make the changes given in this service bulletin unless the changes given in Boeing Service Bulletin 737-25- 1404, if applicable, as required by FAA AD 2001-15-01 have been incorporated on the escape slide latch assembly. Refer to Section 3, Figure 1 for a logic diagram of concurrent requirements for modifying the escape slide assembly. 1. If the 5A3307-3 escape slide is installed as spares and Goodrich Service Bulletin number 5A3307-25-309 which modified the 5A3307-1 into a 5A3307-3 is stenciled on the girt, then Goodrich Service Bulletin 25-308 is incorporated prior to or concurrent with this service bulletin. 2. If escape slide assemblies 5A3086-3 (forward) or 5A3088-3 (aft) are installed as spares, then Boeing Service Bulletin 737-25-1475 and Goodrich Service Bulletin 25-308 are incorporated prior to or concurrent with this service bulletin.

**C. Reason** There are three reports of a Goodrich 5A3307 series escape slide, installed on 737 Next Generationairplanes, which did not inflate when deployed. These escape slides did not inflate even after the backup handle was pulled and the firing cable was pulled out of the valve regulator assembly. Two reports occurred during functional tests at Boeing prior to delivery. The third report occurred during an operational test on an in-service airplane. The escape slides did not inflate due to the incorrect installation of a piston rod in the valve regulator assembly of the escape slide. This valve regulator assembly is also used on the 5A3086 and 5A3088 series escape slides. If the rod is installed upside down, the valve regulator assembly can be charged but the upside down rod will prevent the regulator from activating when the firing cable is pulled. There have also been several reports of Goodrich 5A3307 series escape slides not inflating automatically when deployed, however, these escape slides did inflate after the back-up handle was pulled. Automatic inflation did not occur due to trigger housing cover deflecting the inflation cable and not allowing sufficient force to pull the inflation cable from the valve.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 31 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

This service bulletin contains instructions which will prevent the incorrect installation of the piston rod in the inflation valve regulator assembly. This service bulletin also contains instructions to remove the cover from the trigger housing and modify the valise to add a larger pad to the valise to provide the same shielding function as the trigger housing cover. This modification ensures that enough force is applied to the inflation cable for extraction from the regulator. If the escape slide fails to inflate during deployment, it can result in the exit not being usable during an emergency evacuation. The changes given in this service bulletin cannot be made without prior or concurrent incorporation of FAA AD 2001-15-01, which calls out Boeing Service Bulletins 737-25-1403 and 737-25-1404. Boeing Service Bulletin 737-25-1404 modifies the escape slide latch assembly and compartment. Boeing Service Bulletin 737-25-1403 calls out Goodrich Service Bulletin 5A3307-25-309, which modifies the escape slide. Incorporation of Goodrich Service Bulletin 25-338 as called out in this service bulletin is considered an Alternate Means of Compliance (AMOC) to the 5A3307-25-309 Goodrich Service Bulletin. Therefore, Goodrich Service Bulletin 25-338 can be incorporated in lieu of the 5A3307-25- 309 service bulletin and remain in compliance with FAA AD 2001-15-01. **D. Description** The compartment-slide assemblies are removed from the Entry and Service Doors, forward and aft. The escape slide assemblies are removed from the compartment assemblies. The escape slide assemblies are changed by the applicable Boeing and/or Goodrich service bulletins. The modified escape slide assemblies are installed in the compartment assemblies. The compartment-slide assemblies are installed on the Entry and Service Doors, forward and aft. The airplane effectivity is divided into three groups to reflect different delivered escape slide configurations. Group 1 Airplanes delivered with escape slide assembly 5A3086-3 (forward) and 5A3088-3 (aft). Group 2 Airplanes delivered with escape slide assembly 5A3307-1 (forward and aft). Group 3 Airplanes delivered with escape slide assembly 5A3307-3 (forward and aft). **E. Compliance** Boeing recommends that the change to the escape slide be done within 36 months after the date on this service bulletin. Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2001-15-01 is related to 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.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 32 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

**NOTE:** Joint Airworthiness Requirements (JAR) compliance status may be found in the Service Bulletin Index, Part 1. **G. Manpower** 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 examine the work

*The manpower needed to change the valve regulator per Goodrich Service Bulletin 25-308 and 25-338 is not included in the totals above. Refer to Goodrich Service Bulletins 25-308 and 25-338 for additional time estimate. *The manpower needed to change the valve regulator per Boeing Service Bulletin 737-25-1475 is not included in the totals above. Refer to Boeing Service Bulletin 737-25-1475 for additional time estimate. **H. Weight and Balance Changes**

None.

**I. Electrical Load Data** Not changed.

**J. References** 1. Existing Data: a. Engineering Change Memo PRR 38546. b. 737-600/700/800/900 Aircraft Maintenance Manual (AMM) 25-66-01. c. Engineering Change Memo PRR 38546. d. FAA Airworthiness Directive (AD) 2001-15-01. e. Goodrich Service Bulletin 25-308, “EQUIPMENT/FURNISHINGS - Evacuation Systems - Replace Rod In Regular Valve on B737NG Slides” Original Issue, dated January 21, 2000. **Task Number of**  **Persons Task-Hours Elapsed Hours** Remove and Install Escape Slides 1 2.0 2.0

Inspect 1 0.25 0.25 * TOTAL FOR EACH AIRPLANE (4 Doors) 2.25 2.25April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 33 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

f. Goodrich Service Bulletin 25-338, “Modify Regulator With New Vespel Piston Plug and Modify 5A3307 Slide Valise” Original Issue, dated July 7, 2003 through Revision 1, dated March 31, 2004.

**NOTE:** The supplier was told to send copies of the service bulletin to each operator. g. Goodrich Service Bulletin 5A3086/5A3088-25-302, “Equipment Furnishings-Evacuation Systems-Incorporate Product Improvements on B737NG Slides” Original Issue, dated November 13, 1998 through Revision 1, dated February 19, 2001. h. Goodrich Service Bulletin 5A3086/5A3088-25-336, “Equipment Furnishings-Evacuation Systems-Replace Angled Trigger Housing on Side Regulator Valve” Original Issue, dated June 17, 2002.i. Goodrich Service Bulletin 5A3307-25-309, “Equipment Furnishings-Evacuation SystemsInstall Trigger Housing Cover on B737 NG Slides” Original Issue, October 29, 1999. j. Boeing Parts Standards Document D-590. k. Boeing Drawing 65-88700. 2. Data supplied with this Service Bulletin:

None. 3. Installation Drawings Used in the Preparation of this Service Bulletin:

These drawings were used to prepare this service bulletin. These drawings are not necessary to make the specified changes, and are not supplied with this service bulletin. These drawings may not be applicable to all airplane configurations or operators.

**K. Publications Affected**

**L. Interchangeability and Intermixability of Parts** Refer to Paragraph 2.C., Parts Necessary For Each Airplane, for interchangeability and intermixability information. **Drawing Number Title** 416A2200 Compartment - Slide Assembly 416A2100 Evacuation Slide - Compartment Instl 10-61323 Evacuation Slide Assembly Door Mounted

**Publication Chapter-Section** 737 Illustrated Parts Catalog 25-66-00April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 34 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

BLANK PAGEApril 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 35 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

**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 and Paragraph 2.D., Parts Necessary To Change Spares. Refer to Goodrich Service Bulletin 25-338. **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: Refer to Goodrich Service Bulletin 25-338 for information on parts and materials supplied by the operator.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 36 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

3. Parts Modified and Reidentified:

4. Parts Removed and Not Replaced:

None. **D. Parts Necessary to Change Spares** Refer to Goodrich Service Bulletin 25-338 for information on which parts are necessary for each spare escape slide. There is no equivalent production configuration. **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. **Existing Part Number QTY Name New Part Number Notes**  10-61323-1002 (Boeing) and

5A3086-3 (Goodrich) 1 Slide, Forward Door, Left or Right Side 10-61323-1302 (Boeing) and

5A3086-301 (Goodrich) (a)

10-61323-1003 (Boeing) and

5A3088-3 (Goodrich) 1 Slide, Aft Door, Left or Right Side 10-61323-1303 (Boeing) and

5A3088-301 (Goodrich) (a)

10-61323-2001 (Boeing) and

5A3307-1 (Goodrich) 1 Slide, Fwd/Aft Door, Left or Right Side 10-61323-2302 (Boeing) and

5A3307-301 (Goodrich) (a)

10-61323-2002 (Boeing) and

5A3307-3 (Goodrich) 1 Slide, Fwd/Aft Door, Left or Right Side 10-61323-2302 (Boeing) and

5A3307-301 (Goodrich) (a)

(a) Refer to Goodrich Service Bulletin 25-338 for more information on parts modified and reidentified.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 37 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

**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. Equivalent procedures may be used as an alternative to the specified manual sections.

**B. WORK INSTRUCTIONS** 1. Remove the compartment/slide assemblies from the Entry and Service Doors, forward and aft. 737-600/700/800/900 AMM 25-66-01. 2. Remove the escape slide assemblies from the compartment assemblies. 737-600/700/800/900 AMM 25-66-01. a. Escape slide 5A3086-3, 5A3307-1, or 5A3307-3 are removed from the compartment assemblies on the forward Entry and Service doors. b. Escape slide 5A3088-3, 5A3307-1, or 5A3307-3 are removed from the compartment assemblies on the aft Entry and Service doors. 3. Inspect escape slides to verify prior or concurrent accomplishment of Goodrich and Boeing Service Bulletins by checking the part number and service bulletin number stenciled on the escape slide girt. Refer to Figure 2. a. For escape slide assembly with part number 5A3086-3 or 5A3088-3 verify that Goodrich Service Bulletin 25-308 and Boeing Service Bulletins 737-25-1475 have been accomplished. If escape slide 5A3307-1 is installed as spares, inspect escape slide to verify that Goodrich Service Bulletin 25-308 has been accomplished, if applicable. If escape slide 5A3307-3 with Goodrich Service Bulletin 5A3307-25-309 stenciled on the girt is installed as spares, inspect escape slide to verify that Goodrich Service Bulletin 25-308 has been accomplished. b. For escape slide assembly with part number 5A3307-1 verify that Goodrich Service Bulletin 25-308 has been accomplished. If escape slides 5A3086-3 or 5A3088-3 are installed as spares, inspect escape slides to verify that Goodrich Service Bulletin 25-308 and Boeing Service Bulletin 737-25-1475 have been accomplished. If escape slide 5A3307-3 with Goodrich Service Bulletin 5A3307-25-309 stenciled on the girt is installed as spares, inspect escape slide to verify that Goodrich Service Bulletin 25-308 has been accomplished.April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 38 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

c. For escape slide assembly with part number 5A3307-3 verify that Goodrich Service Bulletin 25-308 has been incorporated, if applicable. If escape slides 5A3086-3 or 5A3088-3 are installed as spares, inspect escape slides to verify that Goodrich Service Bulletin 25-308 and Boeing Service Bulletin 737-25-1475 have been accomplished.

**NOTE:** Boeing Service Bulletin 737-25-1475 incorporates the changes given in Goodrich Service Bulletin 5A3086/5A3088-25-336 if Goodrich Service Bulletin 5A3086/ 5A3088-25-302 has not been previously incorporated. 4. Do the changes to the slide assembly given in the Goodrich Service Bulletin 25-338 and any required prior or concurrent Goodrich or Boeing Service Bulletin changes listed in the Concurrent Requirements section of this service bulletin. Refer to Figure 1. 5. Install the changed escape slides in the compartment assemblies. Refer to 737-600/700/800/900 AMM 25-66-011. 6. Install the compartment/slide assemblies on the Entry and Service Doors, forward and aft. Refer to 737-600/700/800/900 AMM 25-66-01. 7. Put the airplane back to a serviceable condition.**FIGURE 1: CONCURRENT REQUIREMENT LOGIC DIAGRAM** April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 39 of 40 

### BOEING SERVICE BU **LLETIN 737-25-1491**

**FIGURE 1: CONCURRENT REQUIREMENT LOGIC DIAGRAM**

General Note: Boeing Service Bulletin 737-25-1404 is the subject of FAA AD 2001-15-01 and is to be incorporated on the applicable Group 1, 2 and 3 airplanes prior to or concurrent with this service bulletin. (A) Goodrich Service Bulletin 25-338 is an AMOC to the Goodrich Service Bulletin 5A3307-25-309 called out in Boeing Service Bulletin 737-25-1403, which is the subject of FAA AD 2001-15-01. (B) Boeing Service Bulletin 737-25-1475 incorporates the changes given in Goodrich Service Bulletin 5A3086/ 5A3088-25-336 if Goodrich Service Bulletin 5A3086/5A3088-25-302 has not been previously incorporated. P/N 5A3307-3 EXISTING SLIDE

(AD 2001-15-01) STENCILED ON GIRT?

INCORPORATED AND SB 5A3307-25-309 IS GOODRICH

P/N 5A3307-301 RESULTANT SLIDE P/N 5A3307-1 EXISTING SLIDE

P/N 5A3307-301 RESULTANT SLIDE GOODRICH SB 25-308 INCORPORATE

NO YES OR 5A3088-3 P/N 5A3086-3 EXISTING SLIDE

OR 5A3088-301 P/N 5A3086-301 RESULTANT SLIDE (B) 5A3086/5A3088-25-302) OR 5A3086/5A3088-25-336 (GOODRICH SB SB 737-25-1475 INCORPORATE BOEING

(A) (GOODRICH SB 25-338) SB 737-25-1491 INCORPORATE BOEING

(GOODRICH SB 25-338) SB 737-25-1491 INCORPORATE BOEING GOODRICH SB 25-308 INCORPORATE

(A) (GOODRICH SB 25-338) SB 737-25-1491 INCORPORATE BOEING GOODRICH SB 25-308 INCORPORATED42161

**(SHEET 1 OF 1) FIGURE 2: ESCAPE SLIDE INSPECTION - ALL GROUPS**  April 23, 2007 737-25-1491 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 40 of 40 

### BOEING SERVICE BULLETIN 737-25-1491

**FIGURE 2: ESCAPE SLIDE INSPECTION - ALL GROUPS**

The step number shown below agrees with the number shown in the circle symbols in the figure. The QTY number shown below is the number of escape slide parts necessary for each door.

**STEP TASK NAME PART NUMBER QTY NOTES** 1 Visually Inspect Goodrich Part Number on Escape Slide Girt 5A3086-3 (forward) or 5A3088-3 (aft) or

5A3307-1 or

5A3307-3 1 ESCAPE SLIDE INSTALLATION SEE A



### A FWD 1W48852

**(SHEET 1 OF 1)**