May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 94 

### Commercial **Airplane Group**  

# 737

**SPECIAL ATTENTION** 

# Service Bulletin

**Number: 737-53-1260** Date: May 07, 2007 ATA System: 5321 **SUBJECT:** FUSELAGE - Passenger Cabin Floors - Station 520 to 540 - Seat Track Link Assemblies - Replacement/Modification 

## BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2007 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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in connection with this document or otherwise.**BLANK PAGE** May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 2 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

BLANK PAGE**Table of Contents** May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 3 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**Table of Contents** Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . 52 3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . 52 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . 52 2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . 56 3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 57 3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 FIGURE 1: EXISITING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION . . . . . . . . 65 FIGURE 2: BREAK PANEL AND SEAT TRACK LINK ASSEMBLY REMOVAL. . . . . . . . . . . . . 68 FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION . . . . . . . . . . . . . . . . . . . . . 71 FIGURE 4: BREAK PANEL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 FIGURE 5: DRILL HOLES FOR FLOOR PANEL FASTENERS . . . . . . . . . . . . . . . . . . . . . 83 FIGURE 6: BUSHING STRAP REWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 FIGURE 7: TRACK SUPPORT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 FIGURE 8: TRACK SUPPORT INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 FIGURE 9: ELECTRICAL BRACKET REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 FIGURE 10: ELECTRICAL BRACKET INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 93**Table of Contents** May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 4 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

BLANK PAGEMay 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 5 of 94 

### Commercial **Airplane Group**  

# 737

**SPECIAL ATTENTION** 

# Service Bulletin

**Number: 737-53-1260** 

### Summary Date: May 07, 2007 ATA System: 5321 **SUBJECT:** FUSELAGE - Passenger Cabin Floors - Station 520 to 540 - Seat Track Link Assemblies - Replacement/Modification

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY. **CONCURRENT REQUIREMENTS** Group 1-2, 4-5: You cannot make the changes given in this service bulletin unless the changes given in Boeing Service Bulletin 737-53-1120 R01 are made. Boeing Service Bulletin 737-53-1120 R01 describes procedures to install a new channel with a seat track link assembly. Group 3: None. **BACKGROUND** This service bulletin gives instructions to repair or replace the cabin floor seat track link assemblies between BS 520 and BS 540. If the work given in this service bulletin is not accomplished, the current seat track crowns and seat track link assemblies could separate during a 9G emergency landing condition. If the seat track crown and the seat track link assembly separate, the passenger seats would not have adequate support during a 9G emergency landing. This could result in injury to passengers. This condition does not comply with FAR/JAR 25.561 emergency landing conditions, 9G forward loading. Testing of a portion of the seat track revealed the structural deficiency related to the seat track crown attachment to the seat track link assembly. The changes shown in this service bulletin will restore the 9G forward loading condition in the areas between BS 520 and BS 540. Boeing Service Related Problem (SRP) 737-SRP-53-0179 is related to this service bulletin. **ACTION** Group 1-4: Get access to seat track link assemblies at body station (BS) 520-540. At each location, replace the existing seat track link assembly with a new one piece seat track link assembly. Group 5: Get access to seat track link assemblies at body station (BS) 520-540. At each location, do a fastener modification to the existing seat track link assembly and intercostal.May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 6 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

**EFFECTIVITY** 737-100, -200, -200C -300, -400, -500 Airplanes. Refer to Paragraph 1.A.1., Airplanes for the list of affected airplanes. **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. Refer to Paragraph 1.E., Compliance. **INDUSTRY SUPPORT INFORMATION** Boeing warranty remedies are available for airplanes in warranty as of November 18, 2002. Please refer to Paragraph 2.B., Industry Support Information.
**MANPOWER** Refer to Paragraph 1.G., Manpower.
**MATERIAL INFORMATION** Boeing Supplied Kits/Parts. Refer to Paragraph 2.A., Material - Price and Availability.May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

FWD



### GROUP 1-3 CONFIGURATION SHOWN, GROUP 4-5 CONFIGURATION SIMILAR STA 520

RBL 45.5 45.5 LBL 537.45

STA

24.75 LBL

BL 0.0

24.75 RBL 520 STA

540 STA 500 STA

GROUPS 1-4 REPLACE THE SEAT TRACK LINK ASSEMBLIES GROUP 5 DO A FASTENER MODIFICATION TO THE EXISTING SEAT TRACK LINK ASSEMBLIES1338602May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 8 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

BLANK PAGEMay 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 94 

### Commercial **Airplane Group**  

# 737

**SPECIAL ATTENTION** 

# Service Bulletin

**Number: 737-53-1260** Date: May 07, 2007 ATA System: 5321 **SUBJECT:** FUSELAGE - Passenger Cabin Floors - Station 520 to 540 - Seat Track Link Assemblies - Replacement/Modification

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.
**1. PLANNING INFORMATION A. Effectivity**  1. Airplanes This service bulletin is for the airplanes shown below. Refer to Service Bulletin Index Document D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.

Airplane models: 737-100 737-200 737-200C 737-300 737-400 737-500 IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER **GROUP CONFIGURATION DESCRIPTION** 1 - 737-100, -200 passenger airplanes line number 1 thru 1717 with common effectivity to service bulletin 737-53-1120 R01. 2 - 737 -300, -400 passenger airplanes line number 1 thru 1717 with an electrical bracket and with common effectivity to service bulletin 737-53- 1120 R01. 3 - 737-300, -400, -500 passenger airplanes line number 1718 thru 3132 with an electrical bracket. 4 - 737 -200 navigation trainer airplanes. 5 - 737-200C cargo airplanes.May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 10 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

AAR A/C ENG. SALES & LEASING (AFD) 2 PP189 PP205 PP435 PP732 3 PP198 ADAM AIR (DAM) 1 PK528 PK820 PK824 PK974 PN405 2 PP840 PP935 PP964 PQ281 PW009 PW011–PW012 PW061 PW091 3 PM556 PP508 PS619 PU301 PW119 PW562 ADC AIRLINES (ADN) 1 PJ118–PJ119 PN033–PN034 AEGEAN AIRLINES S.A. (CRM) 2 PW002 PW502 3 PM392 PR028 PR030 PS601 PS608 PS961 PW046 PW053 PW157 PW261 PW276 PW289 PW564 AERGO CAPITAL LIMITED (CLJ) 1 PK462 PK468 PK772 5 PY031 AERO CONTRACTORS OF NIGERIA (NCC) 3 PQ194 PQ196 AERO CONTROLS (AEO) 1 PG312 PG629 AERO NUSANTARA INDONESIA (NOK) 1 PL504 AEROCONDOR (EDR) 1 PK901 PL401 PL403 PN491 AEROFLOT-DON (DAU) 3 PT513–PT514 AEROFLOT-NORD (CJS) 3 PT051 PT054 PT147 AEROGAL/GALAPAGOS AIRLINES (ERG) 1 PK715 PK827 PL102 PL110 PL171 PL624–PL625 PN030May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 11 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

AEROLINEAS ARGENTINAS (ARG) 1 PG584–PG585 PH705–PH708 PH741–PH743 PK102–PK103 PK735–PK737 PK739–PK740 PK747 PK750–PK751 PK755 PK757 PK761 PK763 PK765 PN112–PN113 3 PT042 PT044–PT045 PT047 PT303–PT306 PT309 PT509–PT510 5 PY007 AEROLINEAS AUSTRAL CHILE S.A. (LUT) 1 PL405 PM141–PM142 PN103 AEROSERVICE (SRI) 1 PL742–PL743 AEROSUCRE (SUS) 5 PY201 PY341 PY451 AEROSUR (REO) 1 PK594 PK713–PK714 PK716 AEROSVIT (UKA) 1 PK564 3 PP924 PQ284 PT614–PT615 PW039 PW265 PW591–PW592 PW595–PW596 AEROVISTA GULF EXPRESS (GXP) 1 PK861–PK863 PL556 5 PY621 AIR ALGERIE (ALG) 1 PK633–PK634 PL722 PL724 5 PY051 PY053 AIR ATLANTA ICELANDIC (AID) 2 PP913 AIR AUSTRAL (AUX) 3 PS621 PT215 AIR CANADA (ACN) 1 PK679–PK680 AIR CHINA (BEJ) 2 PP521–PP522 3 PQ345–PQ346 PQ361–PQ364 PQ373 PQ438 PQ447 PQ971 PQ975 PS957 AIR CHINA INNER MONGOLIAN (IML) 3 PQ365–PQ366 PQ370 PQ372 PQ988 PQ990 PS614–PS617May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 12 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

AIR CHINA SOUTHWEST BRANCH (XIN) 2 PP632–PP633 3 PQ401–PQ406 PQ408–PQ410 PS811 AIR CHINA TIANJIN BRANCH (TJA) 3 PQ367–PQ369 PQ371 AIR CORRIDOR (KRD) 1 PK749 AIR FRANCE (AFA) 3 PT214 PT503–PT508 PT512 AIR GABON (GBN) 5 PY191 AIR GUINEE (GNE) 1 PN456 5 PY651 AIR HORIZONS (AHZ) 5 PY004 AIR MADAGASCAR (MAD) 1 PG375 PL793 2 PP852 3 PQ297 PQ299 AIR MALAWI (AML) 3 PS602 PT397 AIR MALTA (MLT) 3 PS873–PS874 AIR MEDITERRANEE (AMV) 1 PG028–PG029 5 PY301 AIR NAMIBIA (NAM) 1 PK731 PK746 AIR NEW ZEALAND (ANZ) 3 PQ997 PR041 PR062–PR066 PR077–PR080 PS866–PS868 AIR NIPPON (ANK) 3 PJ817 PT053 PT060 PT063–PT064 PT126 PT128–PT131 PT871–PT886 PW026 AIR NORTH YUKON'S AIRLINE (AND) 1 PK596 PK599May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 13 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

AIR ONE (ADH) 1 PK432 PK933 PK938 2 PW111–PW112 3 PQ228–PQ229 PQ347–PQ348 PR021–PR022 PV228 PV231–PV234 PV236–PV237 PV301 PW041 PW043 PW052 PW054 PW106 PW115 PW267 PW288 PW526 PW831 PW851 AIR PHILIPPINES (PHP) 1 PG001 PG039 PG061–PG062 PG066 PK099 PK541–PK542 PN021–PN022 PN025 PN029 PN031 PN038 PN417–PN418 AIR SAHARA (SAQ) 3 PQ306 PR012 PW064 PW066 PW264 PW273 AIR SLOVAKIA (SLO) 1 PK936 AIR TANZANIA (TNZ) 1 PN411 PN413 5 PY611 AIR VANUATU (VAN) 3 PQ454 AIR ZIMBABWE (ZMB) 1 PN431–PN433 AIRASIA BERHAD (ASW) 2 PP002 PP021 PP023 PP234 PP406–PP409 PP411 PP419 PP421 PP471 PP504 PP677 PP684 PP686 PP848 3 PM385 PM388 PM390–PM391 PM398 PP509 PP516–PP517 PP920 PQ184 PQ332 PQ448 PS657 AIRBALTIC CORPORATION (BCB) 3 PR162 PR164 PT002 PT005 PT161–PT163 PT424–PT425 PT428–PT429 PU311 PU313 AIRCRAFT MAINTENANCE CORP. (AMF) 1 PK254 AIRFAST INDONESIA (PTF) 1 PN481 5 PY343May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 14 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

AIRTRAN AIRWAYS (CQT) 1 PK697 AIRWORK NZ (ANX) 2 PP028 PQ026 5 PY741 AIRZENA (GEI) 2 PP044 3 PT611 PW262 AL WISHKAN LIMITED (AWM) 3 PM393–PM394 PS606 PS651 ALASKA AIRLINES (ASA) 3 PJ301–PJ302 PJ601–PJ615 PW116 PW231–PW252 5 PY134 PY270 PY462–PY463 ALOHA AIRLINES (ALO) 1 PK495 PK759–PK760 PK764 PK934–PK935 PL626 PM251 PM253 PN085 5 PY131 PY592 PY594–PY595 PY721 ALTER BAIL AVIATION (ABH) 1 PK359 AMERICA WEST AIRLINES (AMW) 1 PL081 PL560 2 PP029 PP183–PP187 PP194–PP195 PP197 PP383 PP834 PP891 PP893 PP895 PP898 PP901 PP931–PP934 PP936 3 PP199 PS666–PS669 AMERICAN FALCON AIR (FAK) 1 PL026 AMERISTAR AIR CARGO (CGG) 1 PK221 PK560 PM051 5 PY345–PY346 APOLLO AVIATION CAPITAL, LLC. (APV) 1 PL761 ARAL (RII) 3 PW031 ARIK AIR (AKD) 2 PQ154 3 PQ161 ARKIA ISRAELI AIRLINES (ARK) 1 PK822 PL402 PL414May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 15 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

ASIA AIRLINES (YDO) 1 PL020 5 PY005 PY135 ASIANA AIRLINES (AAR) 3 PT851–PT853 PV204–PV206 PV208 PV227 PW283 PW286 ASTRAEUS, LTD. (AUA) 3 PP929 PS605 ATA AIRLINES, INC. (AAT) 3 PQ188–PQ189 PQ192 ATA ATLANTICO TRANSPORTE AEREO (AUI) 5 PY322 PY361 ATLANT-SOYUZ (AYZ) 2 PP233 PP239 ATLANTIC AIRLINES (LNL) 1 PK673 PL005 PL008 PL010 PL622–PL623 ATLAS BLUE (ABT) 3 PW631–PW636 AURELA (URE) 3 PQ307 AUSTRAL - CIELOS DEL SUR (ALA) 1 PN104 PN110–PN111 PN114–PN115 PN117 AUTOMATIC LLC (AUM) 1 PK502 PK504 PK762 PK801 PK803–PK804 PK821 AVE.COM (PHX) 1 PG579 PK213–PK214 PK222 PK312 PK671 PK823 PK826 PK830 PL732 PM252 2 PP892 AVIACSA AEROEXO (AEJ) 1 PK211 PK216–PK220 PK598 PK609 PK625–PK626 PM101–PM102 PM104–PM107 PM114–PM119 PM181 PN454 2 PP422–PP423 PP425 AVIATION CAPITAL GROUP CORP. (CGP) 1 PK286May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 16 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

AVIATION CONSULTANTS (ACT) 1 PG037 PK546 5 PY001 AVIOGENEX (AVG) 1 PN501 AVIOR (AWD) 1 PK549 PK591 PM058 AVOLAR (AOL) 2 PP022 PP231–PP232 PP679 PP682 3 PT001 PT213 PT216 AVSTAR (VSV) 1 PL107 PL112 AWAS (AWW) 2 PP903 PP905–PP906 PP948 3 PP917 PT212 PT217–PT218 PT220 AXIS AIRWAYS (AXY) 2 PQ301 3 PW033 BABCOCK & BROWN A/C MANAGEMENT (BBB) 3 PS637 PW317 BAHAMASAIR (BAH) 1 PK672 PL501 PL506 BASIC CAPITAL MANAGEMENT (BCM) 1 PN455 BATAVIA AIR (BTV) 1 PJ107 PJ112 PK252 PK283–PK284 PK305 PK360 PK514–PK515 PK563 PK617 PK622 PK635 PK711–PK712 PK825 PL413 2 PP003–PP004 PP006 PP008 PP017–PP020 PW005 3 PP921 PS631 PW015 PW032 PW575 BAVARIA (BAV) 2 PP984 BAYU INDONESIA AIR (BAY) 1 PK561May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 17 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

BCI AIRCRAFT LEASING (BLI) 1 PN137 PN142–PN143 2 PP237–PP238 5 PY112 PY461 PY593 BELAVIA (ITU) 3 PT722 PT971 BELLVIEW AIRLINES (BEB) 1 PK203 PK612 PK872 PL028 BLUE AIR (BTR) 3 PS618 PT211 PW741 BLUE DART AVIATION (BDA) 1 PK231–PK232 PL451 PM281 PN521 BLUE PANORAMA AIRLINES (BPA) 3 PW284 PW518–PW519 PW742 BLUEBIRD CARGO (BLS) 2 PM383 PQ242 3 PQ342–PQ344 PW524 PW530 BMI BRITISH MIDLAND (BMA) 3 PP520 PQ291–PQ292 PQ431 PQ433–PQ435 PQ974 PQ992 PQ996 PS625 PS861 PS971 PT186–PT188 PT701–PT703 BOEING (TBC) 1 PG051 PG215 BOURAQ AIRLINES (PTB) 1 PK501 PK919–PK920 BRA TRANSPORTES AEREOS (BRW) 2 PP907 PP946 PQ226 PQ243 3 PQ260–PQ261 PW020–PW021 PW504 BRITISH AIRWAYS (BAB) 2 PP841–PP842 3 PM399 PQ283 PQ305 PT009 PT021 PT183 PT185 PT295 PT307–PT308 PT515–PT516 PW101 PW301–PW302 PW305–PW308 PW312 PW314–PW315 PW318–PW327 BULGARIA AIR (BLD) 3 PQ190 PQ262 PR025–PR026 PT170 PT427 PT437 BURAQ AIR (BQA) 1 PL723 PL725May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 18 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

C.I.T. LEASING CORPORATION (TCI) 2 PP836 CANADIAN NORTH (ANP) 1 PL415 5 PY152–PY154 PY422 PY441 CANJET (CNJ) 2 PQ231 3 PT426 PT434–PT435 PT438 PT616 CAPITAL AIRCRAFT (CPT) 1 PK464 CASBAH AG AVIATION DIVISION (BHV) 1 PL581 CAYMAN AIRWAYS (CAY) 1 PJ009 PK753 3 PQ293 PQ481 5 PY244 CHANCHANGI AIRLINES (CGI) 1 PL412 PL416–PL417 PN083–PN084 PN086 CHARTER AIR (FIH) 3 PS630 PS871 CHILEAN AIR FORCE (CHF) 2 PQ053 3 PT996 CHINA EASTERN AIRLINES (CEA) 3 PQ977 PQ979 PQ981 PR141–PR143 CHINA EASTERN AIRLINES WUHAN (WUH) 3 PQ472 PQ491–PQ492 PR081–PR082 PR131 CHINA EASTERN YUNNAN AIRLINES (YUN) 3 PQ263 PQ411–PQ412 PQ414–PQ418 PS622–PS623 PS628 CHINA POSTAL AIRLINES (YIH) 3 PM407–PM409 CHINA SOUTHERN AIRLINES (GUN) 2 PQ252–PQ255 3 PM412 PM541–PM544 PM547 PM549 PQ407 PQ479–PQ480 PR121–PR122 PS836–PS837 PS841–PS846 PT041 PT061–PT062May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 19 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

CHINA UNITED AIRLINES (CUL) 2 PP728–PP729 3 PQ288–PQ289 PS609–PS610 PS896–PS897 CHINA XINHUA AIRLINES (XIH) 3 PM546 PQ264 PQ804–PQ805 PR001 PS856 PW852–PW854 CHINA XINJIANG AIRLINES (XIJ) 3 PM545 PM548 CIRRUS AIRLINES (CSG) 3 PT146 CIRRUS ME S.A.L (CMU) 1 PM103 CIS AIR HOLDINGS (CIS) 1 PG217 COMAIR LIMITED (CML) 1 PK734 PK738 PK744 PK748 PK754 PK758 PK904 PK907 2 PQ001 PQ003–PQ006 PQ008 PQ010 3 PW303 PW310–PW311 PW556 COMPASS CAPITAL CORPORATION (COK) 1 PN414 CONOCOPHILLIPS ALASKA, INC. (ATR) 1 PK610 PN452–PN453 CONTINENTAL AIRLINES (CAL) 2 PP671–PP675 PP678 PP680–PP681 PP683 PP688–PP699 PP701 PP703–PP710 PP712–PP726 PP730 PP733 3 PT801–PT834 PT901–PT905 PT907–PT930 CONVIASA S.A. (VSS) 2 PQ117 3 PS604 CORENDON AIRLINES (HVA) 3 PQ286 PQ451 PW282 PW285 CSA (CSA) 3 PJ816 PT136 PT138 PT184 PT301–PT302 PT617–PT621 PT981–PT985 PV302 PW102 PW268 PW304 PW309 PW431–PW435 PW517 CSC TRANSPORT (CTC) 2 PW007May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 20 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

DASAB AIR (DSB) 1 PN024 PN036 DBA (DBA) 2 PP838 PP961 3 PP511 PP515 PR015–PR017 PS655 DELTA AIR LINES (DAL) 1 PN131–PN136 PN138–PN139 PN141 PN144–PN149 PN153–PN157 PN159 PN161–PN163 PN401–PN404 PN407–PN410 PN415–PN416 2 PP240 PP243 PP506 PQ086 DELTA CONNECTION (DTC) 5 PY272 DISCOVERY AIRLINES SA (DCS) 5 PY101 DNIPROAVIA (DNE) 3 PP510 DODSON AVIATION (DOO) 1 PJ032 DOLPHIN AIR (FDN) 1 PL151 5 PY241 PY243 DONGHAI AIRLINES (JWC) 2 PP651–PP652 EARTH AIRLINES (ETL) 1 PG352 EAST AFRICAN AIRLINES (EAB) 1 PL023 EASYJET (EZY) 3 PR171 EDREES AVIATION (SME) 1 PL505 EG&G TECHNICAL SERVICES (EGN) 1 PL763 4 PJ205 PJ207–PJ210 EGYPTAIR (EGP) 1 PG026 3 PT561 PT563–PT565May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 21 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

ESEN AIR LTD. (ESN) 1 PK317 PL729 ESTAFETA (EST) 2 PP825–PP826 PP833 PP846 PQ224–PQ225 5 PY056–PY057 PY275 ESTONIAN AIR (ENA) 3 PQ994 PR045 PT716–PT717 PU312 ETHIOPIAN AIRLINES (ETH) 1 PN512 EUROPE AIRPOST (EUE) 2 PP392 PP832 PP947 PP951–PP952 PS641 3 PP925 PQ421 PQ771–PQ772 PR096 PS607 PS642–PS644 EUROPEAN AVIATION AIR CHARTER (EUL) 1 PK044–PK046 PK048–PK049 PK053 PN001 5 PY273 EUROPEAN CAPITAL HOLDINGS (ECC) 5 PY003 PY321 EXECUTIVE JET AIRCRAFT COMPANY (EXF) 1 PL441 EXPORT RESTRICTED AIRPLANES (YWV) 1 PA002 PG021 PG041 PG074 PG218–PG219 PG224 PG305 PG307–PG308 PG310–PG311 PG574 PH731 PJ002–PJ003 PJ102 PK361 PK391 PL758 5 PY021–PY022 PY141–PY142 EXPRESSAIR (PTX) 1 PK304 PM022 FAA (FAA) 1 PL768 FACTS AIR (FAD) 5 PX701 FALCONBRIDGE (NAD) 5 PY612 FASCO AIRWAYS (EAO) 1 PG228 FEDERATIVE REPUBLIC OF BRAZIL (BRZ) 1 PK068–PK069May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 22 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

FIRST AIR (BRS) 1 PK358 PL407 5 PY133 PY281 PY410 PY421 FLYGLOBESPAN.COM (FGS) 3 PS962–PS963 FLYING CARPET (FYC) 1 PM064 PN140 FLYME (FMA) 2 PP393 PP902 PP910–PP911 FRESH AIR LTD. (FRR) 1 PN035 FUTURA (FUA) 2 PP430 PP899 PW512 PW514 PW561 3 PW035 PW047–PW048 PW266 PW527 FUTURA GAEL (FTU) 3 PW034 GA TELESIS (GTG) 2 PP241–PP242 GARUDA INDONESIA (GIA) 3 PM404 PQ285 PQ487 PQ986–PQ987 PR061 PR068–PR072 PR091–PR092 PS956 PT681–PT685 PV271–PV272 PW067 PW443–PW450 PW461–PW467 PW525 GARY AIRCRAFT (GRH) 1 PL745 GE AVIATION MATERIALS (GML) 2 PP001 GE CAPITAL CORPORATION (GEF) 1 PG220–PG221 PG651–PG652 PK026–PK027 PK256 PK466–PK467 2 PP235–PP236 PP426 3 PQ237 PT050 GENERIC CUSTOMER/SUPPLIER (XXX) 1 PK274 GERMANIA (GER) 2 PP503 PP507 PQ087 PQ119 PQ152 PQ233–PQ236 3 PQ230May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 23 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

GLOBAL AIR (YCH) 1 PK548 PL013 GOL AIRLINES (GOT) 2 PQ120 PQ123–PQ124 PQ143–PQ145 3 PQ158–PQ160 PQ162–PQ163 PQ191 PQ193 PQ195 GUGGENHEIM AVIATION PARTNERS (GPR) 3 PJ811 PW528–PW529 HAINAN AIRLINES (HNA) 2 PQ088–PQ091 PQ156–PQ157 3 PQ473–PQ475 PR005 PR010 PS611 PS613 PS976–PS978 PV203 PV356–PV357 PW086–PW088 PW093 HAMRA AIR (HMA) 2 PP420 HAPAG LLOYD EXPRESS (HLX) 3 PT104 HAPAG-LLOYD FLUG (HAP) 2 PW511 PW513 3 PT101–PT103 PT105 HEMUS AIR (HEU) 3 PM554 PQ331 HEWA BORA AIRWAYS (EXD) 1 PG274 HOLA AIRLINES (HLB) 2 PP912 PP965 PW006 3 PQ304 ICARO (IKA) 1 PK742 PK771 INDIAN AIR FORCE (IDF) 1 PH712–PH713 PM016–PM017 INDIAN AIRLINES (IND) 1 PK237–PK240 PM001–PM006 5 PY631 INTAL AIR (IRT) 5 PY242 PY274 INTER AIR (ITI) 1 PL108 5 PY046–PY047May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 24 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

INTERLEASE AVIATION (ILA) 1 PG210 INTERNATIONAL AIR LEASES (IAL) 1 PL803 INTERNATIONAL AIR PARTS (IAO) 1 PG580 INTERNATIONAL TRANSPORT (YIT) 1 PG304 ISRAEL AIRCRAFT INDUSTRIES (IAI) 1 PG575 PK692 JAL INTERNATIONAL (JAL) 3 PW411–PW418 JANCO AIRCRAFT AND ENGINES (JNC) 1 PM282–PM283 JAPAN TRANSOCEAN AIR (SWL) 3 PW401–PW408 PW515–PW516 PW520–PW521 PW681–PW683 JAT YUGOSLAV AIRLINES (JAT) 2 PP771–PP779 PQ241 3 PV023–PV024 JATAYU AIR (JAJ) 1 PG068 PJ117 PK257 PK511 PK937 JERRY CONWAY (JCW) 1 PK552 JET AIRWAYS (JPL) 3 PV207 PV209 PW215–PW216 PW421–PW424 JET MIDWEST (JMI) 1 PK558 PM057 PM066 JET TIME (JME) 2 PP897 JET2.COM LTD (CEX) 2 PP908–PP909 PP914 PQ027 PQ030–PQ039 PQ051–PQ052 PQ054–PQ055 PQ058–PQ059 JET4YOU.COM (JFU) 3 PW661 JETALLIANCE (JFB) 3 PS862May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 25 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

JETCONNECT LIMITED (JCL) 2 PQ012–PQ014 3 PQ015–PQ016 PW542–PW543 JETRAN INTERNATIONAL, LTD. (JTI) 1 PK592–PK593 PK601 PK605 JETSTAR AIRCRAFT SALES (JTS) 1 PG306 JORDAN AVIATION (JOR) 2 PP896 3 PQ187 JP AIR (JPI) 1 PK215 K.A.B. (KBH) 1 PK315 KALININGRADAVIA (JSK) 2 PP196 PP305 PP418 PP424 PP429 PP475 PP801 PP837 PP843–PP844 PP867 PP870 PP916 PQ232 PQ302 3 PS652 KARTHAGO AIRLINES (KAG) 3 PP926 PP928 PP930 PQ180 PQ432 PR029 KARTIKA AIRLINES (KRK) 1 PK309–PK310 KENYA AIRWAYS (KEN) 1 PK641–PK642 3 PR031–PR034 KITTY HAWK AIR CARGO (KHC) 2 PM382 PP847 PP862 PQ221 PQ223 3 PM396 PM405 KLM - ROYAL DUTCH AIRLINES (KLM) 2 PP861 PP863–PP866 PP868–PP869 PP871–PP873 3 PP874–PP877 PW014 PW017 PW611–PW619 PW621–PW622 KRASAIR (ZXD) 2 PP962 PP967 3 PM410–PM411 PQ792May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 26 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

LAB (LAB) 3 PQ951 LAC (CQC) 5 PY113 LAM (LAM) 1 PK681 PL455–PL456 PN451 LAN AIRLINES (LAN) 1 PJ006 PJ104–PJ105 PK212 PK431 PK433 PK524–PK525 PK745 PK775 PK902–PK903 PK908–PK912 PK914–PK916 PK921–PK923 PK927 PL025 LAPA ARGENTINA (LAZ) 1 PK051 LINA CONGO (LNA) 5 PY411 LINEAS AEREAS AZTECA (AZX) 2 PP802 PP915 PP983 PQ116 3 PP923 PP986 LION AIR (MLI) 2 PP181–PP182 PW501 3 PW016 PW022–PW023 PW025 PW027 PW029 PW037–PW038 PW042 LITHUANIAN AIRLINES (LIJ) 1 PK632 3 PT169 PT721 PT972–PT973 LJH AVIATION MANAGEMENT (WAT) 1 PL006 LOCALEASE (LLA) 1 PK282 LOCKHEED MARTIN (LMA) 2 PQ057 LOGISTIC AIR, INC. (LGA) 5 PY303–PY304 LOT POLISH AIRLINES (LOT) 3 PQ978 PQ980 PS973 PT651–PT656 PV281–PV286 PW065 LUFTHANSA GERMAN AIRLINES (DLH) 2 PQ060–PQ068 PQ092 3 PQ069–PQ085 PS701–PS706 PT331–PT360May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 27 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

LUXAIR (LUX) 3 PT671–PT672 MACEDONIAN AIRLINES, MACEDONIA (MCC) 2 PP043 MACQUARIE AIR FINANCE (ZGT) 3 PR043 MAERSK AIR (MRS) 3 PT121 PT125 PT127 PT132–PT135 MAGIC CARPET AVIATION (MCI) 2 PP991 MAGNICHARTERS (MAM) 1 PJ004 PK143 PK145 PK595 PL454 PL554 PL558 2 PQ028 3 PQ168 MALAYSIA AIRLINES (MAS) 3 PJ551–PJ553 PJ555–PJ557 PJ559–PJ561 PW201–PW214 PW217–PW230 MANDALA AIRLINES (MND) 1 PK255 PK354 PK463 PK614 PK636–PK637 PK874 PK925 PL027 PL061 PL421 PL744 PN002 2 PW004 PW010 MARANATHA LEASING CORPORATION (MNT) 1 PG436 PK201–PK202 PL011 PM062 MERCURY (MLM) 1 PK318 MERPATI NUSANTARA AIRLINES (PNM) 1 PK615 PK623–PK624 PK819 PK917 PK929–PK930 PL408–PL411 PN105–PN106 MEXICAN AIR FORCE (MXA) 1 PN041 MEXICO'S PRESIDENTIAL AIRCRAFT (MXG) 2 PQ155 3 PP919 MIAMI AIR (MIB) 3 PV226 PV229May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 28 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

MIDAMERICAN AEROSPACE, LTD (MML) 1 PL557 5 PY231 MISTRAL AIR (MSX) 2 PQ222 3 PQ341 PS638 MNG AIRLINES (MHK) 3 PW593 NACOS (ANW) 2 PP904 NAT AVIATION U.S.A. (NTV) 1 PK258 PK551 PK557 PK732 NATIONWIDE AIRLINES (NWR) 1 PJ007–PJ008 PK357 PK741 PK871 PK906 PK928 PK932 PL631–PL632 PN107 PN109 3 PT612–PT613 NEWJET (NES) 1 PL172 PL562 NICON AIRWAYS LTD. (EAV) 1 PL453 PN032 NIGERIA AIRWAYS (NIA) 1 PL785 PL788 NOK AIR (OWL) 3 PJ554 PJ558 NORTHERN AIR CARGO (NAC) 1 PN150–PN152 NORTHROP GRUMMAN CORPORATION (GRU) 1 PG208 NORTHSTAR PRESIDIO MANAGEMENT (INH) 1 PK094–PK095 NORWEGIAN AIR SHUTTLE AS (NSB) 2 PM381 PP805–PP806 3 PM389 PM401–PM402 PP518–PP519 PP807–PP808 PP918 PP985 PQ791 PQ793 PQ983 PQ985 PR002 PR101 PR132 PS627 PS654 PS872 NOVA AIR (PDM) 1 PL007 PL406 PN412May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 29 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

OKAY AIRWAYS COMPANY LIMITED (OKY) 2 PP631 PP634 3 PQ290 PT725 OLYMPIC AIRLINES (OLY) 3 PQ298 PW044 PW062–PW063 PW068 PW072 PW711–PW717 PW771 ORENBURG AIRLINES (ORG) 3 PT010 PW028 PW036 OUR AIRLINE (NAU) 2 PP831 OZJET AIRLINES (OZJ) 1 PK041 PK050 PK052 PACE AIRLINES (PIE) 1 PG075 PG203 PL001 PL502–PL503 PN102 PN108 PN116 2 PP835 PACIFIC AIRLINES (PAH) 3 PW272 PAKISTAN INT'L AIRLINES (PIA) 2 PP281–PP286 3 PS612 PEGASUS AIRLINES (PGS) 3 PT137 PT724 PW030 PW263 PEGASUS AVIATION FINANCE (PSF) 3 PV287 PEGASUS AVIATION, INC. (PSS) 1 PK043 PK233 PK235 PK752 PK756 PL712 PERUVIAN AIR FORCE (PRF) 1 PG251 PG253 PG351 PK113 PN082 3 PT517 PHILIPPINE AIRLINES (PAL) 3 PM384 PM395 PQ803 PW156 PHUKET AIRLINES (PHK) 1 PG581–PG582 PN037 PN039 PLM INTERNATIONAL (PLI) 1 PK675May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 30 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

PLUNA (PLU) 1 PL201–PL203 3 PQ287 PMT AIR (PMD) 1 PG578 PREMIER AIRLINES (PMN) 1 PN493 PT PANN MF (PSO) 1 PK913 PK918 PK931 PT. INDONESIA AIRASIA (WAA) 3 PM397 Q AVIATION (QAV) 1 PK288 PK603–PK604 PK883 QANTAS (QAN) 2 PQ002 PQ007 PQ009 PQ011 3 PW531–PW541 PW544–PW550 PW557 QWEST AIR PARTS (QWE) 1 PG438 REPEX AIRLINES (REX) 5 PY102–PY103 PY344 REPUBLIC FINANCIAL CORPORATION (RFC) 1 PA011 PG199 PG225 PG433 PG502–PG503 PG622 PG704 REPUBLIC OF INDONESIA (IDO) 1 PL601–PL603 REPUBLIC OF KOREA AIR FORCE (KAF) 2 PP221 REPUBLIC OF NIGER (NIR) 5 PY166 REPUBLIC OF VENEZUELA (VNZ) 1 PK070 REPUBLICAIR (RPB) 1 PL553 PL555 RICO (RLA) 1 PK119–PK120 2 PP352May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 31 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

ROYAL AIR MAROC (RAM) 1 PK271–PK272 3 PT023 PT581–PT586 5 PY671–PY672 ROYAL THAI AIR FORCE (TAF) 1 PK519 3 PV296 RUTACA AIRLINES (ZRU) 1 PK281 PK611 PK613 RYAN INTERNATIONAL AIRLINES (RYN) 1 PK097 PK543 PK602 PK606 PK608 3 PQ197 RYANAIR (RYR) 1 PK503 RYM AIRLINES (RYM) 1 PL017–PL019 S7 AIRLINES (SBR) 3 PT381 PT388–PT389 PT396 PT401 PT420–PT421 PT430–PT431 PT433 PT501–PT502 PW051 PW094 SAFAIR (SFA) 1 PK355 PK733 PK743 PL103 PL111 PL113 PN492 5 PY002 SAS BRAATHENS (BRT) 3 PT003–PT004 PT006–PT008 PT011–PT015 PT022 PT024–PT025 PV351 PW573–PW574 PW576 SAT AIRLINES (SKH) 1 PL221 PN158 SAUDI ARABIAN AIRLINES (SVA) 1 PK316 PL727–PL728 PL730–PL731 PL733 PL735 5 PY036 SEB AVIATION (SEF) 3 PT219 SHAHEEN INTERNATIONAL (SHK) 1 PL003 PL551 PL561May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 32 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

SHANDONG AIRLINES (SHG) 3 PM413–PM414 PQ391–PQ395 PR006–PR009 PR013–PR014 PR161 SHANTOU AIRLINES (SHT) 3 PM415–PM417 SHENZHEN AIRLINES (SHZ) 3 PQ486 PQ972 PQ976 PQ995 PS629 PS691–PS692 PS851–PS852 SIERRA PACIFIC AIRLINES (SRP) 1 PK627 PL621 SILVER AIR (SARL) (SVT) 1 PK313–PK314 PL726 PL734 SILVER SKY (SLZ) 1 PN419 SKY AIRLINES (SYC) 2 PW001 3 PV235 PW278 PW281 PW293 PW296 SKY EXPRESS (SXR) 2 PQ056 SKY KING (SKN) 1 PG059 PK351–PK353 PK696 PL002 SKY SERVICE (SSV) 1 PK526–PK527 PK628–PK629 PK881 PK884 PK971 PK973 PL736 SKYEUROPE (SKP) 3 PR163 PR166 PT056–PT057 PT148 SKYNET ASIA AIRWAYS (SNU) 3 PM555 PW274 PW441–PW442 PW855–PW856 SLOK AIR (SRO) 1 PM108–PM113 SLOVAK AIRLINES (SLV) 2 PP851 SOJITZ AIRCRAFT LEASING (SNR) 3 PT854 SOUTH AFRICAN AIRWAYS (SAA) 1 PK774 PK776 PL104–PL106 PL109May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 33 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

SOUTHERN AIRCRAFT SERVICES (HUZ) 1 PL471 SOUTHERN WINDS (SOW) 1 PJ005 PK029 PK047 PK253 PK616 SOUTHWEST AIRLINES (SWA) 1 PM065 2 PP101–PP145 PP161–PP169 PP188 PP190–PP193 PP202–PP204 PP301–PP304 PP351 PP353 PP376–PP382 PP402–PP403 PP501–PP502 PP727 PP731 PP803–PP804 PP821–PP824 PP827 3 PP146–PP160 PS751–PS799 PS901–PS941 PU001–PU025 SPACE WORLD AIRLINE/SWA (WIN) 1 PL021–PL022 SRIWIJAYA AIR (SJA) 1 PJ114 PK302–PK303 PK307–PK308 PK777 PL746 PM021 PM254 PN023 PN026–PN027 PN040 PN042–PN043 STA SUPPLIES PTE. LTD. (SSP) 2 PQ040–PQ041 STAR UP S.A. (SRU) 1 PJ115 PK802 PL611 STC ROSSIYA RUSSIAN AIRLINES (STG) 3 PT164–PT168 STEWART INDUSTRIES INT'L (SDT) 1 PK905 PK926 PN473 SUNDOWNER ALEXANDRIA (SDX) 3 PP514 PS653 SUNDOWNER OKLAHOMA CITY LLC (SDO) 3 PW313 PW316 SWIFT AIR LLC (SFW) 3 PV042–PV043 PW563 TAAG (ANGOLA AIRLINES) (ANG) 1 PK661 PK664–PK666 5 PY162 TACA INTERNATIONAL AIRLINES (TAC) 1 PL737 PN420May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 34 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

TAF AEREAS LINHAS (TFL) 1 PK118 PL404 PN160 5 PY323 PY342 TAROM - ROMANIAN AIR TRANSPORT (TRM) 3 PQ931–PQ935 TEEBAH AIRLINES (EBH) 1 PN028 THAI AIRASIA (THA) 2 PP412 PP473 PP676 PP687 THAI AIRWAYS INTERNATIONAL (TII) 3 PW161–PW162 PW164–PW171 PW594 THE PEGASUS AVIATION COMPANY (PEG) 1 PK285 THOMSONFLY (BRI) 3 PQ436–PQ437 PR003–PR004 PR011 PR023–PR024 PR067 PR165 PS974–PS975 PT123–PT124 PT181–PT182 TITAN AIRWAYS (TIU) 2 PP505 3 PM387 PS620 PS636 TNT AIRWAYS (TNB) 2 PP384 PP391 PP413–PP414 PP416 PP433 PP472 PP474 PP702 PP711 PP845 TRANS AIR CONGO (TSC) 1 PK562 TRANSAERO AIRLINES (TRX) 1 PK451–PK452 PK773 PK779 2 PP963 PP966 3 PT046 PT049 PT052 PT723 PW024 PW040 PW113–PW114 PW120 TRANSMILE AIR SERVICES (TML) 1 PN472 PN474 5 PY151 PY381 TRAVEL SERVICE (TSF) 3 PT432 PT436 TRITON AVIATION SERVICES (TIA) 1 PJ101 PJ103 PK677 PL770 PN101May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 35 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

TUI AIRLINES BELGIUM (TLB) 3 PW522 TUIFLY (TNS) 3 PW662 TUNISAIR (TUN) 3 PT641–PT644 TURKISH AIRLINES (THY) 3 PM552–PM553 PM557 PM559–PM560 PM562–PM564 PW018–PW019 PW045 PW049–PW050 PW287 PW290–PW291 TURKMENISTAN AIRLINES (TUE) 3 PQ265 PQ801–PQ802 UKRAINE INTERNATIONAL AIRLINES (UKR) 2 PQ251 3 PM551 PM561 PQ991 PR042 PR181 PT048 PT055 PT059 PT511 PW701–PW702 UNICAPITAL AIR GROUP (UAG) 1 PK695 UNITED AIRLINES (UAL) 1 PG024 PG052 PG054–PG055 PG057 PG067 PG069–PG071 PL004 PL009 PL012 PL014–PL016 2 PQ101–PQ115 PQ118 PQ121–PQ122 PQ125–PQ142 PQ146–PQ151 3 PQ164–PQ167 PQ169–PQ179 PQ181–PQ183 PQ185–PQ186 PQ198–PQ199 PQ201–PQ202 PT382–PT387 PT390–PT395 PT398–PT399 PT402–PT419 PT422–PT423 UNIVERSAL ASSET MANAGEMENT (UAM) 1 PM054 PM056 PM059–PM061 US AIR FORCE (USF) 4 PJ202 PJ206 PJ211 PJ213–PJ219 US AIRWAYS (USA) 2 PP005 PP007 PP014–PP016 PP024–PP027 PP030–PP032 PP034–PP042 PP045–PP049 PP401 PP404–PP405 PP410 PP417 PP428 PP431–PP432 PP434 PP436–PP440 PV001–PV010 PV012–PV017 3 PP050–PP054 PV018–PV022 PV025–PV040 PV044–PV055 UT FINANCE CORPORATION (ZZJ) 2 PQ153May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 36 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

VARIG (VGG) 3 PP922 PQ227 VARIG AIRLINES (VAR) 1 PK111–PK112 PK114 PK144 2 PP981–PP982 PQ303 PW008 3 PP987–PP990 PQ256–PQ259 PQ266–PQ267 PR044 PS624 PT058 PV201–PV202 PW118 VASP AIRLINES (VSP) 1 PG472 PK581 3 PP512–PP513 PS863 VIRGIN EXPRESS AIRLINES (EBA) 2 PW013 3 PQ984 PQ989 PQ993 PS656 PS972 PW271 PW275 PW571–PW572 VIRGIN NIGERIA (VNA) 3 PQ982 PR167–PR170 PR172 VISIG AIRLINES (YHJ) 2 PP894 VISION AIR (VEG) 2 PP685 3 PS626 VIVA AEROBUS (VRB) 2 PP009–PP010 PP012–PP013 PP427 WEBJET LINHAS AEREAS LTDA. (WJL) 2 PP839 3 PS603 WELLS FARGO (FSB) 1 PJ110–PJ111 PL740–PL741 WEST DOVER LLC (WDR) 2 PP415 3 PT043 PV041 WESTAIR CARGO AIRLINES (WCO) 5 PY037 WESTJET (WJI) 1 PK241 PK565 XIAMEN AIRLINES (XIA) 3 PQ295–PQ296 PQ471 PQ493 PT026–PT031May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 37 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

XTRA AIRWAYS (CIN) 1 PG279 3 PW117 PW503 PW761 IDENTIFICATION BY VARIABLE NUMBER **Variable Group** PA001–PA022 1 PA099 1 PA231–PA232 1 PC001–PC005 1 PG001–PG075 1 PG199 1 PG201–PG230 1 PG251–PG255 1 PG271–PG279 1 PG301–PG314 1 PG331–PG332 1 PG351–PG356 1 PG375 1 PG401–PG403 1 PG431–PG442 1 PG471–PG475 1 PG501–PG505 1 PG571–PG586 1 PG621–PG630 1 PG651–PG652 1 PG701–PG705 1 PH001 1 PH011–PH013 1 PH021–PH024 1 PH701–PH715 1 PH731–PH732 1 PH741–PH743 1 PJ001–PJ009 1 PJ031–PJ032 1 PJ071–PJ072 1 PJ101–PJ119 1 PJ201–PJ219 4 PJ301–PJ302 3 PJ551–PJ561 3May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 38 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

PJ601–PJ615 3 PJ811 3 PJ816–PJ817 3 PK026–PK029 1 PK041–PK053 1 PK061–PK070 1 PK081–PK082 1 PK091–PK099 1 PK101–PK103 1 PK111–PK120 1 PK141–PK146 1 PK201–PK204 1 PK211–PK223 1 PK231–PK241 1 PK251–PK258 1 PK271–PK274 1 PK281–PK289 1 PK291 1 PK301–PK318 1 PK341 1 PK351–PK361 1 PK391 1 PK431–PK433 1 PK451–PK452 1 PK461–PK469 1 PK495 1 PK501–PK504 1 PK511–PK515 1 PK519 1 PK521–PK528 1 PK541–PK565 1 PK581 1 PK591–PK599 1 PK601–PK617 1 PK621–PK637 1 PK641–PK642 1 PK661–PK666 1 PK671–PK681 1 PK691–PK697 1 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 39 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

PK711–PK716 1 PK731–PK765 1 PK771–PK779 1 PK801–PK804 1 PK819–PK827 1 PK830 1 PK861–PK863 1 PK871–PK874 1 PK881–PK884 1 PK901–PK938 1 PK971–PK974 1 PL001–PL028 1 PL061 1 PL081 1 PL101–PL113 1 PL151 1 PL171–PL172 1 PL201–PL203 1 PL221 1 PL401–PL417 1 PL421 1 PL441 1 PL451–PL456 1 PL471 1 PL491 1 PL501–PL506 1 PL551–PL562 1 PL581 1 PL601–PL603 1 PL611 1 PL621–PL626 1 PL631–PL632 1 PL711–PL712 1 PL716–PL747 1 PL756 1 PL758 1 PL761–PL770 1 PL781–PL788 1 PL793 1 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 40 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

PL801–PL803 1 PM001–PM006 1 PM016–PM017 1 PM021–PM023 1 PM051–PM066 1 PM101–PM119 1 PM141–PM142 1 PM171 1 PM181 1 PM251–PM255 1 PM281–PM283 1 PM381–PM383 2 PM384–PM399 3 PM401–PM417 3 PM541–PM564 3 PN001–PN002 1 PN021–PN043 1 PN081–PN086 1 PN101–PN117 1 PN131–PN163 1 PN401–PN420 1 PN431–PN433 1 PN451–PN456 1 PN471–PN474 1 PN481 1 PN491–PN493 1 PN501–PN502 1 PN511–PN512 1 PN521 1 PP001–PP049 2 PP050–PP054 3 PP101–PP145 2 PP146–PP160 3 PP161–PP169 2 PP181–PP197 2 PP198–PP199 3 PP201–PP205 2 PP221 2 PP231–PP243 2 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 41 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

PP281–PP286 2 PP301–PP305 2 PP351–PP353 2 PP376–PP384 2 PP391–PP393 2 PP401–PP440 2 PP471–PP475 2 PP501–PP507 2 PP508–PP520 3 PP521–PP522 2 PP631–PP634 2 PP651–PP652 2 PP671–PP699 2 PP701–PP733 2 PP771–PP779 2 PP801–PP806 2 PP807–PP808 3 PP821–PP827 2 PP831–PP848 2 PP851–PP852 2 PP861–PP873 2 PP874–PP877 3 PP891–PP899 2 PP901–PP916 2 PP917–PP930 3 PP931–PP936 2 PP946–PP948 2 PP951–PP952 2 PP961–PP967 2 PP981–PP984 2 PP985–PP990 3 PP991 2 PP993 3 PQ001–PQ014 2 PQ015–PQ016 3 PQ026–PQ041 2 PQ051–PQ068 2 PQ069–PQ085 3 PQ086–PQ092 2 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 42 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

PQ101–PQ157 2 PQ158–PQ199 3 PQ201–PQ202 3 PQ221–PQ226 2 PQ227–PQ230 3 PQ231–PQ236 2 PQ237 3 PQ241–PQ243 2 PQ251–PQ255 2 PQ256–PQ267 3 PQ281–PQ282 2 PQ283–PQ299 3 PQ301–PQ303 2 PQ304–PQ307 3 PQ331–PQ332 3 PQ341–PQ348 3 PQ361–PQ373 3 PQ391–PQ395 3 PQ401–PQ418 3 PQ421 3 PQ431–PQ438 3 PQ447–PQ448 3 PQ451 3 PQ454 3 PQ471–PQ475 3 PQ479–PQ481 3 PQ486–PQ487 3 PQ491–PQ493 3 PQ771–PQ772 3 PQ791–PQ793 3 PQ801–PQ805 3 PQ931–PQ935 3 PQ951 3 PQ971–PQ997 3 PR001–PR017 3 PR021–PR034 3 PR041–PR045 3 PR061–PR072 3 PR077–PR082 3 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 43 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

PR091–PR092 3 PR096 3 PR101 3 PR121–PR122 3 PR131–PR132 3 PR141–PR143 3 PR161–PR172 3 PR181 3 PS601–PS631 3 PS636–PS638 3 PS641 2 PS642–PS644 3 PS651–PS657 3 PS666–PS669 3 PS691–PS692 3 PS701–PS706 3 PS751–PS799 3 PS811 3 PS836–PS837 3 PS841–PS846 3 PS851–PS852 3 PS856 3 PS861–PS863 3 PS866–PS868 3 PS871–PS874 3 PS896–PS897 3 PS901–PS941 3 PS956–PS957 3 PS961–PS963 3 PS971–PS978 3 PT001–PT015 3 PT021–PT031 3 PT041–PT064 3 PT101–PT105 3 PT121–PT138 3 PT146–PT148 3 PT161–PT170 3 PT181–PT188 3 PT211–PT220 3 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 44 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

PT295 3 PT301–PT309 3 PT331–PT360 3 PT381–PT399 3 PT401–PT438 3 PT501–PT517 3 PT561–PT565 3 PT581–PT586 3 PT611–PT621 3 PT641–PT644 3 PT651–PT656 3 PT671–PT672 3 PT681–PT685 3 PT701–PT703 3 PT716–PT717 3 PT721–PT725 3 PT801–PT834 3 PT851–PT854 3 PT871–PT886 3 PT901–PT930 3 PT971–PT973 3 PT981–PT985 3 PT996 3 PU001–PU025 3 PU301 3 PU311–PU313 3 PV001–PV017 2 PV018–PV055 3 PV201–PV209 3 PV226–PV229 3 PV231–PV237 3 PV271–PV272 3 PV281–PV287 3 PV296 3 PV301–PV302 3 PV351 3 PV356–PV357 3 PW001–PW013 2 PW014–PW054 3 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 45 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

PW061 2 PW062–PW068 3 PW072 3 PW086–PW088 3 PW091–PW092 2 PW093–PW094 3 PW101–PW102 3 PW106 3 PW111–PW112 2 PW113–PW120 3 PW156–PW157 3 PW161–PW171 3 PW201–PW252 3 PW261–PW268 3 PW271–PW276 3 PW278 3 PW281–PW293 3 PW296 3 PW301–PW327 3 PW401–PW408 3 PW411–PW418 3 PW421–PW424 3 PW431–PW435 3 PW441–PW450 3 PW461–PW467 3 PW501–PW502 2 PW503–PW504 3 PW511–PW514 2 PW515–PW522 3 PW524–PW550 3 PW556–PW557 3 PW561 2 PW562–PW564 3 PW571–PW576 3 PW591–PW596 3 PW611–PW622 3 PW631–PW637 3 PW661–PW662 3 PW681–PW683 3 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 46 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

PW701–PW702 3 PW711–PW717 3 PW741–PW742 3 PW761 3 PW771 3 PW831 3 PW851–PW856 3 PX071 5 PX701 5 PY001–PY008 5 PY021–PY022 5 PY031 5 PY036–PY037 5 PY046–PY048 5 PY051–PY053 5 PY056–PY057 5 PY101–PY103 5 PY111–PY113 5 PY131–PY135 5 PY141–PY143 5 PY151–PY154 5 PY156–PY157 5 PY161–PY162 5 PY166 5 PY191 5 PY201 5 PY221–PY222 5 PY231 5 PY241–PY244 5 PY270–PY275 5 PY281 5 PY286 5 PY301–PY304 5 PY321–PY323 5 PY341–PY346 5 PY361–PY362 5 PY381 5 PY401 5 PY409–PY411 5 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 47 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

2. Spares Affected
None. **B. Concurrent Requirements** Group 1-2, 4-5: You cannot make the changes given in this service bulletin unless the changes given in Boeing Service Bulletin 737-53-1120 R01 are made. Boeing Service Bulletin 737-53-1120 R01 describes procedures to install a new channel with a seat track link assembly. Group 3: None. **C. Reason** This service bulletin gives instructions to repair or replace the cabin floor seat track link assemblies between BS 520 and BS 540. If the work given in this service bulletin is not accomplished, the current seat track crowns and seat track link assemblies could separate during a 9G emergency landing condition. If the seat track crown and the seat track link assembly separate, the passenger seats would not have adequate support during a 9G emergency landing. This could result in injury to passengers. This condition does not comply with FAR/JAR 25.561 emergency landing conditions, 9G forward loading. Testing of a portion of the seat track revealed the structural deficiency related to the seat track crown attachment to the seat track link assembly. The changes shown in this service bulletin will restore the 9G forward loading condition in the areas between BS 520 and BS 540. Boeing Service Related Problem (SRP) 737-SRP-53-0179 is related to this service bulletin. **D. Description** Group 1-4: Get access to seat track link assemblies at body station (BS) 520-540. At each location, replace the existing seat track link assembly with a new one piece seat track link assembly. PY421–PY422 5 PY441 5 PY451 5 PY461–PY463 5 PY591–PY595 5 PY611–PY612 5 PY621 5 PY631 5 PY651 5 PY671–PY672 5 PY721 5 PY741 5 **Variable Group**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 48 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

Group 5: Get access to seat track link assemblies at body station (BS) 520-540. At each location, do a fastener modification to the existing seat track link assembly and intercostal. **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. Group 1: Do the seat track link assembly replacement as given Paragraph 3.B.1.a. within 60 months of the date on this service bulletin. Group 2-3: Do the seat track link assembly replacement as given Paragraph 3.B.2.a. within 60 months of the date on this service bulletin. Group 4: Do the seat track link assembly replacement as given Paragraph 3.B.3.a. within 60 months of the date on this service bulletin. Group 5: Do the existing seat track link assembly fastener modification as given in Paragraph 3.B.4.a. within 60 months of the date on 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. For airplanes and the rework identified in this service bulletin, initial release, the rework has been reviewed as required by paragraph (g) of Airworthiness Directive (AD) 98-11-04 R1. The rework is found to not create a Structurally Significant Item (SSI) or affect an existing SSI in Supplemental Structural Inspection Document (SSID), D6-37089. Therefore, no additional action is required to comply with AD 98-11-04 R1 with the rework of this service bulletin accomplished. If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin. **G. Manpower** The table below shows an estimate of the task hours necessary to do the modification for each Group of airplanes. 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 partsMay 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 49 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

— Time to find the tools. Group 1: Seat Track Link Assembly Replacement

**Task Number of**  **Persons Task Hours Elapsed Hours** Open Access 2 3.00 1.50 Figure 2 1 3.25 3.25 Figure 3 2 4.00 2.00 Figure 4 2 11.00 5.50 Figure 5 2 7.00 3.50 Figure 6 - (a) (a) Close Access 2 3.00 1.50 TOTAL FOR EACH AIRPLANE 31.25 17.25(a) (a) More time may be required for each bushing strap reworked as given in Figure 6. Group 2-3: Seat Track Assembly Replacement

**Task Number of**  **Persons Task Hours Elapsed Hours** Open Access 2 3.00 1.50 Figure 9 1 0.10 0.10 Figure 2 1 3.25 3.25 Figure 3 2 4.00 2.00 Figure 4 2 11.00 5.50 Figure 5 2 7.00 3.50 Figure 6 - (a) (a) Figure 10 1 0.30 0.30 Close Access 2 3.00 1.50 TOTAL FOR EACH AIRPLANE 31.65 17.65(a) (a) More time may be required for each bushing strap reworked as given in Figure 6. Group 4: Seat Track Link Assembly Replacement **Task Number of Persons Task Hours Elapsed Hours** Open Access 2 3.00 1.50 Figure 7 1 0.25 0.25 Figure 2 1 3.25 3.25 Figure 3 2 4.00 2.00 Figure 4 2 11.00 5.50 Figure 5 2 7.00 3.50 Figure 6 - (a) (a) Figure 8 1 1.00 1.00May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 50 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

Close Access 2 3.00 1.50 TOTAL FOR EACH AIRPLANE 32.50 18.50(a) (a) More time may be required for each bushing strap reworked as given in Figure 6. Group 5: Existing Seat Track Link Assembly Modification **Task Number of Persons Task Hours Elapsed Hours** Open Access 2 1.50 0.75 Figure 1 2 8.00 4.00 Close Access 2 1.50 0.75 TOTAL FOR EACH AIRPLANE 11.00 5.50 Group 4: Seat Track Link Assembly Replacement **Task Number of Persons Task Hours Elapsed Hours**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 51 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**H. Weight and Balance Changes**

**I. Electrical Load Data** Not changed. **J. References** 1. Existing Data: a. Engineering Change Memo PRR 35005-252RS. b. Service Related Problem (SRP) 737-SRP-53-0179. c. 737-100/200 Aircraft Maintenance Manual (AMM) 25-22-0, 25-27-100, 53-21-0. d. 737-300/400/500 Aircraft Maintenance Manual (AMM) 25-22-00, 25-27-15, 53-21-00. e. 737-100/200 Structural Repair Manual (SRM) 51-30-08. Group 1: **Seat Track Link Assembly Replacement Airplane**  **Change in Weight (Pounds)**  **Change in Moment (Pound-Inches)**  737-100 + 1.0 + 520 737-200 + 1.0 + 520 Group 2-3: **Seat Track Link Assembly Replacement Airplane**  **Change in Weight (Pounds)**  **Change in Moment (Pound-Inches)**  737-300 + 1.0 + 520 737-400 + 1.0 + 520 737-500 + 1.0 + 520 Group 4: **Seat Track Link Assembly Replacement Airplane**  **Change in Weight (Pounds)**  **Change in Moment (Pound-Inches)**  737-200 + 1.0 + 520 Group 5: **Existing Seat Track Link Assembly Fastener Modification Airplane**  **Change in Weight (Pounds)**  **Change in Moment (Pound-Inches)**  737-200C + 1.9 + 1,000May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 52 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

f. Standard Overhaul Practices Manual (SOPM) 20-30-03, 20-41-02, 20-42-05, 20-43-03, 20-50-02, 20-50-03, 20-50-12, 20-50-19. g. Boeing Drawing 65-88700. h. Boeing Parts Standards Document D-590. i. Boeing Service Bulletin 737-53-1120 R01. 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** 65-45410 FLOOR BEAM INSTL WING CENTER SECTION 65-46814 SEAT TRACK & FLOOR STABILIZER INSTL - SECTION 43

**Publication Chapter-Section** 737-100/200 Illustrated Parts Catalog 57-10 737-300/-400/-500 Illustrated Parts Catalog 53-11 737-100/-200 Structural Repair Manual (SRM) 53-10 737-300/-400/-500 Structural Repair Manual (SRM) 53-60May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 53 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**2. MATERIAL INFORMATION A. Material - Price and Availability**  Boeing can supply the kits/parts shown in Paragraph 2.C., Parts Necessary For Each Airplane as shown below. If there is a limit to the quantity (QTY) of available kits, a supply sequence is given by Spares. More kits become available as shown in the Reorder Lead Time (ROLT). ROLT is calculated from the date Boeing gets the purchase order.

The kits are subject to the terms and conditions of the Boeing standard purchase order acknowledgment. After the Unit Price date, new price and ROLT data is applicable. Prices are in United States dollars. Terms: Net 30 days. Reference this service bulletin and submit your purchase order by one of the methods that follow: 1. Order on-line via ATA Spec 2000 or Boeing Part Page 2. Fax to (206) 662-7145 3. Spares Customer Support - MC 36-65 Boeing Spares Department P.O. Box 3707 Seattle, Washington 98124-2207 USA **B. Industry Support Information** Boeing warranty remedies are available for 737 airplanes in warranty as of November 18, 2002. For task hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing Commercial Airplanes Group - Warranties. The kits and parts for airplanes in warranty as of that date will be supplied at no charge. Send a purchase order for the kits or parts to Boeing Spares. Please refer to this service bulletin number and reference the airplane variable numbers in your purchase order. **C. Parts Necessary For Each Airplane** 1. Kits/Parts: To get the kits/parts shown below, refer to Paragraph 2.A., Material - Price and Availability. **Kit Number Name ROLT**  **(Weeks) Unit Price thru**  **July 31, 2007** 65C38459-1 KIT - PIVOT LINK, INTERCOSTAL STA 520 - STA 537.5 61 $29,212.00 65C38459-2 KIT - PIVOT LINK, INTERCOSTAL STA 520 - STA 537.5 61 $29,189.00May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 54 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

**NOTE:** One top kit and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by the Operator, are necessary for each airplane. **Airplane Group Use Kit** 1, 2, 3 65C38459-2 4 65C38459-1
**Kit 65C38459**

**New Part Number QTY** 
**Name Existing**  **Part Number Notes**  **-2 -1** 65C38459-1 . - KIT - PIVOT LINK, INTERCOSTAL STA 520 - STA 537.5 - 65C38459-2 - . KIT - PIVOT LINK, INTERCOSTAL STA 520 - STA 537.5 - 143A5240-2 2 2 PLATE (a)(b) 143A5240-11 1 1 PLATE (a)(b) 143A5240-12 1 1 PLATE (a)(b) 143A5240-13 1 1 PLATE (a)(b) 143A5240-14 1 1 PLATE (a)(b) 143A5240U31 2 2 PANEL BREAK DETAIL (a)(b)(c) 143A5240U33 1 1 PANEL BREAK DETAIL (a)(b)(c) 143A5240U34 1 1 PANEL BREAK DETAIL (a)(b)(c) 143A5240U37 1 1 PANEL BREAK DETAIL (a)(b)(c) 143A5240U38 1 1 PANEL BREAK DETAIL (a)(b)(c) 143A5595-27 4 4 SEAT TRACK LINK ASSY STA 520-540 (a)(b)(d) 143A5595-30 4 4 BUSHING STRAP - 143A5595-31 4 4 BUSHING STRAP - BACB28Y4E178 4 4 BUSHING, PLAIN, NOMINAL SIZE BORE (b) BACB30FP6A4 . 4 BOLT - BACB30LX6A8 . 3 BOLT - BACB30US4K29D 4 4 BOLT (b)(e) BACB30VT8K5 18 18 BOLT (e)(f) BACC30AC6 . 3 COLLAR - BACC30BL8 18 18 COLLAR (f) BACC30M6 . 4 COLLAR - BACN10VR1CG 20 20 CLIP NUT (f) BACN10VR3CG 27 27 CLIP NUT (f) BACP18BC02A06P 4 4 PIN, COTTER (g) BACP18BC02A08P 4 4 PIN (g) BACR15FT5D5C 2 2 RIVET, UNIVERSAL HD (h) BACR15GF4D3 66 66 RIVET, 100 DEG (f)May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 55 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

BACS12GP3L16 47 47 FLOOR PANEL SCREWS (f) (a) Discard the existing part. (b) You cannot use the existing part to replace the new or changed part. (c) To facilitate installation, some Boeing parts will be sent in an 'interim' configuration. Boeing will identify these interim configurations with a 'U', 'W' or 'Y' in lieu of the '-' (dash) in the part number. Interim parts are changed to the as-designed 'dash' configuration when installed as given in the Accomplishment Instructions of this service bulletin. Refer to Boeing Drawing 005W0900 "INTERIM PARTS - SPARES". (d) The one piece 143A5595-27 seat track link assembly replaces the existing seat track link assembly. (e) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Boeing Document D-590 and Boeing Drawing 65-88700 are used to determine the part numbers used as substitutes. (f) There are more parts than are necessary. (g) The new part number and existing part number for the cotter pins are the same. (h) This part is required to install the electrical bracket in Figure 10. **Kit 65C38459**

**New Part Number QTY** 
**Name Existing**  **Part Number Notes**  **-2 -1**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 56 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

2. Parts and Materials Supplied by the Operator:

3. Parts Modified and Reidentified:
None. 4. Parts Removed and Not Replaced: None. **D. Parts Necessary to Change Spares**
None. Group 1-4: **Part Number / Specification QTY Name Notes** NAS1149C0663R or equivalent CRES material (a) Washer (a) Type 2, Class A 16 Ounces Chemical Conversion Coating (b) BMS 10-11, Type 1 16 Ounces Primer (c) BMS 5-95, Class B -1/2, -2, -4 16 Ounces Sealant (c) BAC 5010 TYPE 79 or TYPE 60 8 Ounces Adhesive (d) (a) Used for Bushing Strap 143A5595-30 rework. Quantity as needed, one for each seat track link assembly. (b) Refer to SOPM 20-43-03 for supplier data. (c) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data. (d) Refer to SOPM 20-50-12 for supplier data. Group 5: **Part Number / Specification QTY Name Notes** BACB30JC8A9 32 Bolt (a) BACB30JC8A5 16 Bolt (a) BACC30BH 48 Collar (a) Type 2, Class A 16 Ounces Chemical Conversion Coating (b) BMS 10-11, Type 1 16 Ounces Primer (c) BMS 5-95, Class B -1/2, -2, -4 16 Ounces Sealant (c) (a) Refer to 737 Structural Repair Manual Chapter 51 for alternative fasteners. (b) Refer to SOPM 20-43-03 for supplier data. (c) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 57 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**E. Special Tooling - Price and Availability** Boeing can supply the tools shown in Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin. Send a Purchase Order to the Director of Spares. Give this service bulletin number and the date the tools will be used. If there is a limit in the quantity of available rental tools, a supply sequence is given by Spares.

The kits are subject to the terms and conditions of the Boeing standard purchase order acknowledgement. After the Price date, new price data is applicable. Prices are in United States dollars. Terms: Net 30 days. Reference this service bulletin number and submit purchase order by one of the methods that follow: 1. Order on-line via ATA Spec 2000 or Boeing Part Page 2. Fax to (206) 662-7145 3. Spares Customer Support - MC 36-65 Boeing Spares Department P.O. Box 3707 Seattle, Washington 98124-2207 USA (Service Bulletin 737-53-1260) **F. Special Tooling Necessary to do this Service Bulletin** To get the tools shown below, refer to Paragraph 2.E., Special Tooling - Price and Availability. Maintenance and overhaul tools in the manuals shown in Paragraph 1.J., References, can also be necessary. Examine operator tool supply to make sure all necessary tools are available. Rental Data:

**Tool Kit Number Name Daily Price**  **thru**
MIT002A0018-1 LOCATING JIG SEAT TRACK PIVOT LINK $90.00

**Tool Kit Number Name** MIT002A0018-1 LOCATING JIG SEAT TRACK PIVOT LINKMay 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 58 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

BLANK PAGEMay 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 59 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**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. Unless shown differently, these dimensions and tolerances are used: — Linear dimensions are in inches. — Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or minus 0.03 inch. — Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch. — Angular tolerance is plus or minus 2 degrees. — Hole dimensions for standard solid rivets are given in 737 Structural Repair Manual, Chapter 51. — Torque limits to tighten nuts and bolts are given in 737 Structural Repair Manual, Chapter 51. 4. For approved fastener and process material substitutions, refer to 737 Structural Repair Manual, Chapter 51, Alternate fasteners are given in 737 Structural Repair Manual Chapter 51 and Boeing Drawing 65-88700. 5. If the length of fasteners specified in this service bulletin do not meet the installation standards, fasteners of the same specification, or an approved substitute, one grip length longer or shorter may be used. 6. A Detailed Inspection is defined as: An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors magnifying lenses, etc. may be necessary. Surface cleaning and elaborate procedures may be required. 7. These work instructions refer to procedures included on 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 "as given in" are included in the instruction, the procedure in the Boeing document must be used. **B. WORK INSTRUCTIONS** 1. Group 1:

a. **Seat Track Link Assembly Replacement**May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 60 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

(1) Remove the seat track covers as necessary between body stations 520 and 540. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (2) Remove the passenger seats as necessary between body stations 520 and 540. Refer to 737-100/200 AMM 25-22-0 as an accepted procedure. (3) Remove the passenger carpets as necessary between body stations 520 and 540. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (4) Remove the passenger compartment floor panels. Refer to 737-100/200 AMM 53-21-0 as an accepted procedure. Keep fasteners for floor panel installation. **NOTE:** Record the hole size and nut clip size for each floor panel fastener in the seat track link assemblies and break panels at body station 540. Use this data to drill fastener holes in the new seat track link assemblies and break panels for floor panel installation. (5) Remove the break panels and seat track link assemblies as given in Figure 2. **NOTE:** Mark the position of the break panels onto the floor beams forward of the seat track link assemblies and onto the crease beams before removal. Use this data to position the new break panels for installation. (6) Install new seat track link assemblies as given in Figure 3. **NOTE:** Existing beam structures at body station 537 may not line up with the new seat track link assemblies and will require rework to part number 143A5595-30 bushing strap to provide alignment and installation of bushing straps. (a) When installing the seat track link assemblies, remove the MIT002A0018-1 locating jig and check if the seat track link assembly aligns with the seat track aft of body station 537. 1) If the seat track link assembly does not align with the seat track aft of body station 537 then rework the 143A5595-30 bushing strap and add a filler as given in Figure 6. **NOTE:** Maximum amount of material removal from the bushing strap is 0.06 inch. If more material needs to be removed then contact The Boeing Company. 2) If the seat tracks align at body station 537, then continue to step (7). (7) Install break panels as given in Figure 4. (8) Drill holes for floor panels as given in Figure 5. (9) Install the passenger compartment floor panels with kept fasteners as given in 737-100/200 AMM 53-21-0. (10) Install the passenger carpets. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure.May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 61 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

(11) Install the passenger seats as given in 737-100/200 AMM 25-22-0. (12) Install the seat track covers. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (13) Put the airplane back to a serviceable condition. 2. Group 2-3:

a. **Seat Track Link Assembly Replacement** (1) Remove the seat track covers as necessary between body stations 520 and 540. Refer to 737-300/400/500 AMM 25-27-15 as an accepted procedure. (2) Remove the passenger seats as necessary between body stations 520 and 540. Refer to 737-300/400/500 AMM 25-22-00 as an accepted procedure. (3) Remove the passenger carpets as necessary between body stations 520 and 540. Refer to 737-300/400/500 AMM 25-27-15 as an accepted procedure. (4) Remove the passenger compartment floor panels. Refer to 737-300/400/500 AMM 53-21-00 as an accepted procedure. Keep fasteners for floor panel installation. **NOTE:** Record the hole size and nut clip size for each floor panel fastener in the seat track link assemblies and break panels at body station 540. Use this data to drill fastener holes in the new seat track link assemblies and break panels for floor panel installation. (5) Remove and support the electrical bracket as given in Figure 9. (6) Remove the break panels and seat track link assemblies as given in Figure 2. **NOTE:** Mark the position of the break panels onto the floor beams forward of the seat track link assemblies and onto the crease beams before removal. Use this data to position the new break panels for installation. (7) Install new seat track link assemblies as given in Figure 3. **NOTE:** Existing beam structures at body station 537 may not line up with the new seat track link assemblies and will require rework to part number 143A5595-30 bushing strap to provide alignment and installation of bushing straps. (a) When installing the seat track link assemblies, remove the MIT002A0018-1 locating jig and check if the seat track link assembly aligns with the seat track aft of body station 537. 1) If the seat track link assembly does not align with the seat track aft of body station 537 then rework the 143A5595-30 bushing strap and add a filler as given in Figure 6.May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 62 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

**NOTE:** Maximum amount of material removal from the bushing strap is 0.06 inch. If more material needs to be removed then contact The Boeing Company. 2) If the seat tracks align at Body Station 537, then continue to step (8). (8) Install break panels as given in Figure 4. (9) Drill holes for floor panels as given in Figure 5. (10) Install electrical bracket as given in Figure 10. (11) Install the passenger compartment floor panels with kept fasteners as given in 737-300/400/500 AMM 53-21-00. (12) Install the passenger carpets. Refer to 737-300/400/500 AMM 25-27-15 as an accepted procedure. (13) Install the passenger seats as given in 737-300/400/500 AMM 25-22-00. (14) Install the seat track covers. Refer to 737-300/400/500 AMM 25-27-15 as an accepted procedure. (15) Put the airplane back to a serviceable condition. 3. Group 4:

a. **Seat Track Link Assembly Replacement** (1) Remove the seat track covers as necessary between body stations 520 and 540. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (2) Remove the passenger seats as necessary between body stations 520 and 540. Refer to 737-100/200 AMM 25-22-0 as an accepted procedure. (3) Remove the passenger carpets as necessary between body stations 520 and 540. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (4) Remove the passenger compartment floor panels. Refer to 737-100/200 AMM 53-21-0 as an accepted procedure. Keep fasteners for floor panel installation. **NOTE:** Record the hole size and nut clip size for each floor panel fastener in the seat track link assemblies and break panels at body station 540. Use this data to drill fastener holes in the new seat track link assemblies and break panels for floor panel installation. (5) Remove existing track support as given in Figure 7. (6) Remove the break panels and seat track link assemblies as given in Figure 2.May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 63 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**NOTE:** Mark the position of the break panels onto the floor beams forward of the seat track link assemblies and onto the crease beams before removal. Use this data to position the new break panels for installation. (7) Install new seat track link assemblies as given in Figure 3. **NOTE:** Existing beam structures at body station 537 may not line up with the new seat track link assemblies and will require rework to part number 143A5595-30 bushing strap to provide alignment and installation of bushing straps. (a) When installing the seat track link assemblies, remove the MIT002A0018-1 locating jig and check if the seat track link assembly aligns with the seat track aft of body station 537. 1) If the seat track link assembly does not align with the seat track aft of body station 537 then rework the 143A5595-30 bushing strap and add a filler as given in Figure 6. **NOTE:** Maximum amount of material removal from the bushing strap is 0.06 inch. If more material needs to be removed then contact The Boeing Company. 2) If the seat tracks align at Body Station 537, then continue to step (8). (8) Install break panels as given in Figure 4. (9) Drill holes for floor panels as given in Figure 5. (10) Install track support as given in Figure 8. (11) Install the passenger compartment floor panels with kept fasteners as given in 737-100/200 AMM 53-21-0. (12) Install the passenger carpets. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (13) Install the passenger seats as given in 737-100/200 AMM 25-22-0. (14) Install the seat track covers. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (15) Put the airplane back to a serviceable condition. 4. Group 5:

a. **Existing Seat Track Link Assembly Fastener Modification** (1) Remove the seat track covers as necessary between body stations 520 and 540. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (2) Remove the cargo compartment floor panels. Refer to 737-100/200 AMM 53-21-0 as an accepted procedure. Keep fasteners for floor panel installation.May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 64 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

(3) Install new fasteners as given in Figure 1. (4) Install the cargo compartment floor panels with kept fasteners as given in 737-100/200 AMM 53-21-0. (5) Install the seat track covers as given in 737-100/200 AMM 25-27-100. (6) Put the airplane back to a serviceable condition.**FIGURE 1: EXISITING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION** May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 65 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**FIGURE 1: EXISITING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION**

A A A

A

A A
A A 537.45

STA 540 STA 520 STA 500 360 STA STA

45.5 LBL

24.75 LBL

BL 0.0 520 STA

45.5 RBL RBL 24.75 FWD1338593

**(SHEET 1 OF 3) FIGURE 1: EXISITING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 66 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

This Figure applies to Group 5: The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each seat track link assembly. **STEP TASK NAME IDENTIFICATION QTY MORE DATA** 1 Drill Fastener Hole - 4 (a)(b) 2 Drill Fastener Hole - 8 (a)(c) 3 Countersink Fastener Hole - 12 (d) 4 Deburr Fastener Hole - 12 Break all sharp edges. 5 Apply Sealant BMS 5-95 - (e) 6 Install Fastener - 4 (a)(f) 7 Install Fastener - 8 (a)(f) 8 Check Gap - 1 (a)(g)(h)(i) (a) Do the fastener modification at each seat track link assembly location.There are four seat track link assemblies per airplane. (b) See illustration for hole locations and fastener code table for hole dimensions. (c) Keep the center of the fastener hole within 0.03 inch from the center of the seat track slot in the inboard / outboard direction and the forward / aft direction. See fastener code table for hole dimensions. STA 521.45
0.20 MIN. EXISTING SEAT TRACK LINK ASSEMBLY

EXISTING INTERCOSTAL STA 537.45

0.86

1.01 1.07 (2 LOCATIONS) EXISTING FASTENER LOCATION NEW FASTENER LOCATION FWD 1.61 1.67 (2 LOCATIONS) 0.86 2 C A 8N 9 3 C A 8N 5

4 LOCATIONS 

### A-A 4 5 7 1 3 4 5 8 61351468

**(SHEET 2 OF 3) FIGURE 1: EXISITING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 67 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure. A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the number of fasteners necessary for this figure. If the grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any of the fastener part numbers are not available or have been superseded, substitute fasteners may be supplied in Boeing kits, Boeing Document D-590 and Boeing drawing 65-88700 are used to determine the part numbers used as substitutes. (d) Countersink 100 degrees on upper side of seat track. Maintain a countersink depth so fastener will have a flushness of +/- 0.005 on the seat track. Refer to 737-100/200 SRM 51-30-08 as an accepted procedure. (e) Under the head and on of the shank of the fastener. Refer to SOPM 20-50-19 (Method 2 of Corrosion Protection Sealing) as an accepted procedure. (f) See fastener code table and illustration for fastener size and length. (g) Minimum Gap of 0.20 inch between seat track link assembly end and seat track at Body Station 520. Trim seat track link assembly end as necessary to get minimum Gap of 0.20 inch. Touch up trimmed area with one coat of chemical conversion coating and primer. (h) Apply one coat of chemical conversion coating Type 2, Class A. Refer to SOPM 20-43-03 as an accepted procedure. (i) Apply one coat of primer BMS 10-11, Type 1. Refer to SOPM 20-41-02 as an accepted procedure.

**CODE NAME IDENTIFICATION HOLE DIA MORE DATA** A Bolt BACB30JC8A( ) 0.247- 0.250 Collar BACC30BH8 **STEP TASK NAME IDENTIFICATION QTY MORE DATA**



### COUNTERSINK FASTENER C D

EXAMPLE OF FASTENER SYMBOL LENGTH/GRIP FASTENER

6F
7 LETTER CODE DIAMETER (OPTIONAL) HEAD LOCATION N = NEAR SIDE F = FAR SIDE (OPTIONAL)

(OPTIONAL)S36173

**(SHEET 3 OF 3) FIGURE 2: BREAK PANEL AND SEAT TRACK LINK ASSEMBLY REMOVAL**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 68 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

**FIGURE 2: BREAK PANEL AND SEAT TRACK LINK ASSEMBLY REMOVAL**

BREAK PANEL

BREAK PANEL BREAK PANEL
SEAT TRACK

BREAK PANEL FWD

FWD SEAT TRACK LINK ASSEMBLY 1

3 1

BEAM CREASE 537.45

STA
1

BEAM FLOOR

BEAM FLOOR 2 2 2 2 2

BL 0.0 BL 0.0 2 LBL 45.5

RBL 24.75

LBL 45.5 537.45

STA

24.75 LBL A SEE 520 STA

A SEE

45.5 RBL 540 STA 520 STA 500 360 STA STA1338594

**(SHEET 1 OF 3) FIGURE 2: BREAK PANEL AND SEAT TRACK LINK ASSEMBLY REMOVAL**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 69 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

This Figure applies to Group 1-4: The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. **STEP TASK NAME IDENTIFICATION QTY MORE DATA** 1 Mark Floor Beams and Crease Beams - - (a) 

### A 5 5 5 5 5 4 6

4 4 4

4 4

4 FWD

4 LOCATIONS1338595

**(SHEET 2 OF 3) FIGURE 2: BREAK PANEL AND SEAT TRACK LINK ASSEMBLY REMOVAL**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 70 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

2 Remove/Keep BACB30FL3-2 Bolt 4 (b) BACB30FL3-3 Bolt 4 AN960PD10 Washer 8 NAS5679A3W Nut 8 BACB30FL4-2 Bolt 8 AN960PD416 Washer 8 NAS679A4W Nut 8 Remove Break Panel 65-52894-( ) 6 - 3 Remove/Keep Fillers 65-46819-2 2 (c)

4 Remove Cotter Pin MS24665-134 4 (d) Remove/Keep Nut BACN10JD5 4 Washer NAS1149C0563R 4 Bolt BACB30NR5DK28 Or BACB30NR5DK30 4 Bushing BACB28AK05-170 Or BACB2BAK05-181 4 Bushing BACB28AT07B009A Or BACB28AT07B009C 8 (e)

5 Remove Cotter Pin MS24665-134 4 (f) Bolt NAS1104-23D 4 Bushing NAS75-4-112 4 Remove/Keep Nut BACN10JD104 4 Washer AN960JD416 4
6 Remove Intercostal 65-45410-( ) 4 - Seat Track 65-46813-( ) 4 (a) Mark the position of the break panels onto the floor beams aft of the seat track link assemblies and on to the crease beams before removal. Use this data to position the new break panels during installation. (b) Nuts, bolts and washers located at the ends of each break panel are kept for installation of new break panels. (c) The fillers are between the seat track link assembly and the break panels at Buttock Line 0.0 only. (d) One for each seat track link assembly at the forward end of seat track link assembly. (e) Two for each seat track link assembly at the forward end of seat track link assembly. (f) One for each seat track link assembly at aft end of seat track link assembly.

**STEP TASK NAME IDENTIFICATION QTY MORE DATA**

**(SHEET 3 OF 3) FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 71 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION**

A

A B B B B B B B B C C C C

C C C C

FWD FWD

11 8 5 4

7 29 6 30 31 12

3 14 13



### A 9 8 1

2 14 13 27 28 A

28 27 A

32 540 STA 360 STA 537.45

STA

45.5 LBL

24.75 LBL

BL 0.0 520 STA

45.5 RBL RBL 24.75 A SEE

4 LOCATIONS 101338596

**(SHEET 1 OF 6) FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 72 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

UP

RIGHT 

### A-A 30

5

4 3 1
14 13

7 29 UPPER FLANGE

6 2 14 13 13

SEAT TRACK LINK ASSEMBLY 15 STA 537.45

REF SECTION 46 SEAT TRACK

0.020 0.020 +

-



### B-B 4 LOCATIONS FWD UP LOOKING FORWARD1338597

**(SHEET 2 OF 6) FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 73 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

This Figure applies to Group 1-4: SEAT TRACK LINK ASSEMBLY END

CHANNEL FASTENER HEAD CHANNEL RADIUS FILLER AND

PIVOT LINK FLOOR BEAM



### C-C MIN. 0.17 SECTION 43 SEAT TRACK END

CUT AREA SUPPORT MIN. 0.20 MIN. 0.20 SEAT TRACK LINK ASSEMBLY

EXISTING FLOOR

BEAM REPAIR 0.40
0.70 520 STA

FWD 16 17 18 25 26

19 20 21 25 26 22 23 24 25 261351508

**(SHEET 3 OF 6) FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 74 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for one seat track link assembly. A total of four seat track link assemblies are required for each airplane.

**STEP TASK NAME IDENTIFICATION QTY MORE DATA** 1 Align Seat Track Link Assembly 143A5595-27 1 4 Locations (a) 2 Position Bushing Strap 143A5595-30 1 4 Locations (b) (c) 3 Position Bushing Strap 143A5595-31 1 4 Locations (b) (c) 4 Insert (New) Bushing BACB28Y4E178 1 4 Locations. Assemble the bushing, bolt, washer and nut. Do not tighten the bolt and nut. 5 Insert (New) Bolt BACB30US4K29D 1 6 Install (Kept) Washer AN960JD416 1 7 Install (Kept) Nut BACN10JD104 1

8 Install (Kept) Bushing BACB28AT07B009A Or BACB28AT07B009C 2 4 Locations.(d)

9 Insert (Kept) Bushing BACB28AK05-170 Or BACB2BAK05-181 1 4 Locations. Assemble the bushing, bolt, washer and nut. Do not tighten. the bolt and nut. 10 Insert (Kept) Bolt BACB30NR5DK28 Or BACB30NR5DK30 1 11 Install (Kept) Washer NAS1149C0563R 1 12 Install (Kept) Nut BACN10JD5 1 13 Inspect Bushing Strap 143A5595-30 and -31 - 4 Locations.(c) 14 Clamp Bushing Strap 143A5595-30 and -31 - 15 Inspect Seat Track Link Assembly 143A5595-27 1 4 Locations. (e) 16 Inspect Seat Track Link Assembly End - 1 4 Locations. (f)

17 Mark Seat Track Link Assembly End - 1 4 Locations.(g)(h)

18 Cut Seat Track Link Assembly End - 1 4 Locations. (g)(i) 19 Inspect Support Channel - 1 4 Locations. (j) 20 Mark Support Channel - 1 4 Locations. (g)(k) 21 Cut Support Channel - 1 4 Locations. (g)(l) 22 Inspect Seat Track Link Assembly - 1 4 Locations. (m)(n) 23 Mark Seat Track Link Assembly - 1 4 Locations. (g)(o) 24 Cut Seat Track Link Assembly - 1 4 Locations. (g)(p) 25 Deburr - - - Break all sharp edges.(g)

26 Apply Chemical Conversion Coating Type 2, Class A - (q) Primer BMS 10-11, Type 1 - (r) 27 Drill Holes - 4 4 Locations. (s)
28 Install Bolts - 4 4 Locations. (t) Collars - 4

**(SHEET 4 OF 6) FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 75 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

29 Tighten Nut BACN10JD104 1 4 Locations. (u) 30 Install (New) Cotter Pin BACP18BC02A08P 1 4 Locations. (v) 31 Tighten Nut BACN10JD5 1 4 Locations. (u) 32 Install (New) Cotter Pin BACP18BC02A06P 1 4 Locations. (v) (a) Align the seat track link assembly with the section 43 seat track crown using MIT002A0018-1 locating jig. (b) Locate by aligning with bolt and bushing shown in steps 4 and 5. (c) Do a detailed inspection. Check the position of the bushing straps. Make sure the bushing straps are mating flushed against the side of the seat track link assembly. If bushing straps are not mating flushed against the side of seat track link assembly, the seat track link assembly is not aligned with existing beam structures at Sta 537.45. The flanged bushing on bushing strap needs to be reworked to realign the seat track link assembly. (d) Install bushing in existing seat track link assembly support channel at Sta 520 floor beam, 4 locations. Install bushing with BMS5-95 sealant as given SOPM 20-50-03. Do not apply sealant to bushing bore hole. (e) Do a detailed inspection. Make sure the seat track link assembly is vertically aligned with the existing seat track. The vertical alignment should be within + or - 0.020 inch to make sure correct seat installation. (f) Do a detailed inspection. Make sure that there is a minimum horizontal clearance of 0.17 inch between the seat track link assembly end and the section 43 seat track end. (g) This step is not required if the gap is within the tolerance as given for minimum clearance. (h) Make a mark on the section 43 seat track end where material needs to be removed. (i) Cut and remove material from the section 43 seat track end. (j) Do a detailed inspection. Make sure that there is a minimum horizontal clearance of 0.20 inch between the edge of the pivot bolt and the edge of the support channel. (k) Make a mark on the support channel where material needs to be removed. The maximum distance that the cut edge can be made from the original edge of the support channel is 0.20 inch. (l) Cut and remove material from the support channel. (m) Do a detailed inspection. Make sure that there is a minimum horizontal clearance of 0.20 inch between the edge of the seat track link assembly and the fastener heads installed on the channel radius filler. (n) If there is an existing floor beam repair at Sta 520 beam. Cut and remove a maximum of 0.40 inch and 0.70 inch of material from the forward upper side flanges of the seat track link assembly. See section view C-C existing floor beam repair. This trim is required to provide clearance between the floor beam repair radius strap and seat track link assembly. (o) Make a mark on the seat track link assembly where material needs to be removed.The maximum distance that the cut edge can be made from the original edge of the seat track link assembly is 0.10 inch. (p) Cut and remove material from the seat track link assembly. (q) Apply one coat of chemical conversion coating to all bare metal surfaces. Refer to SOPM 20-43-03 as an accepted procedure. (r) Apply two coats of primer to bare metal surface. Refer to SOPM 20-41-02 as an accepted procedure. (s) Match drill holes through the bushing straps into the seat track link assembly. Drill holes 0.247 - 0.250 for the bolt. (t) See fastener code table below. Install the collar on the outer side of seat track link assembly. (u) As given in 737 Structural Repair Manual, Chapter 51 for torque limits. (v) Refer to SOPM 20-50-02 as an accepted procedure. **STEP TASK NAME IDENTIFICATION QTY MORE DATA**

**(SHEET 5 OF 6) FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 76 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure. A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the number of fasteners necessary for this figure. If the grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any of the fastener part numbers are not available or have been superseded, substitute fasteners may be supplied in Boeing kits, Boeing Document D-590 and Boeing drawing 65-88700 are used to determine the part numbers used as substitutes. **CODE NAME IDENTIFICATION QTY HOLE DIA MORE DATA** A Bolt BACB30VT8K5 4 0.247 - 0.250 Install collar against bushing strap. Collar BACC30BL8 4 -



### COUNTERSINK FASTENER C D

EXAMPLE OF FASTENER SYMBOL LENGTH/GRIP FASTENER

6F
7 LETTER CODE DIAMETER (OPTIONAL) HEAD LOCATION N = NEAR SIDE F = FAR SIDE (OPTIONAL)

(OPTIONAL)S36173

**(SHEET 6 OF 6) FIGURE 4: BREAK PANEL INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 77 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**FIGURE 4: BREAK PANEL INSTALLATION**

A B

B

A

C 4N

3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3

B 4

2

C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3

B 4

2 B 4 2 A 3

2 FWD

RIGHT FWD CCCCCCCCCC CCCCCCCCC RBL 45.5 45.5 LBL

2 9 LOCATIONS

DISTANCE B 16 1 15

15 16 FLOOR BEAM

FLOOR BEAM 3

3 1 2

24.75

RBL 45.5 RBL 1 2 2

15 16

DISTANCE A

15 16 4 4 10 LOCATIONS



### A-A 3 STA 537.45

FLOOR BEAM 45.5 RBL STA 520 537.45

STA

24.75 LBL

BL 0.0

24.75 RBL 520 STA

540 STA 500 STA1338598

**(SHEET 1 OF 6) FIGURE 4: BREAK PANEL INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 78 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

This Figure applies to Group 1-4: C 4N

3

A 3 3 C 4N

3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3

C 4N

3

B 4 2 C 4N

3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 B 4

2

A 3

3

C 4N

3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3

B 4

2 B 4 2

C 4N

3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3 C 4N 3

A 3

2 B 4 2 A 3 3 A 3

3

A 3 2

LEFT FWD CCCCCCCCCCC

CCCCCCCCCCC

C C C C C C C C C C

C C C C C C C C C BEAM FLOOR BEAM BEAM BEAM

LBL 45.5 16 11 15

11 DISTANCE A

12 16 15 DISTANCE B 10 LOCATIONS 12

FLOOR BEAM LBL 11 LBL FLOOR BEAM 45.5 24.75

537.45

STA



### B-B 13 13 15 16

14 16 15 13

14 13

14 9 LOCATIONS 14

FLOOR BEAM FLOOR BEAM 6

LBL 24.75 16 8 16 9

16 9 15 10

10 11 LOCATIONS 9

FLOOR 0 BL 9 15 6

24.75 16 5 15

FLOOR FLOOR 16 6

16 7 15 6 11 LOCATIONS

0 BL RBL 71338599

**(SHEET 2 OF 6) FIGURE 4: BREAK PANEL INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 79 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for airplane. **STEP TASK NAME IDENTIFICATION QTY MORE DATA** RBL 60 - RBL 45.5

1 Align Break Panel 143A5240U38 1 (a) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d)

2 Align Plate 143A5240-14 1 (e) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d) RBL 45.5 - RBL 24.75

3 Align Break Panel 143A5240U31 1 (f) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d)

4 Align Plate 143A5240-2 1 (g) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d) RBL 24.75 - BL 0.0 5 Align / Kept Filler 65-46819-2 1 -

6 Align Break Panel 143A5240U34 1 (f) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d)

7 Align Plate 143A5240-12 1 - Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d) BL 0.0 - LBL 24.75 8 Align / Kept Filler 65-46819-2 1 -

**(SHEET 3 OF 6) FIGURE 4: BREAK PANEL INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 80 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

9 Align Break Panel 143A5240U33 1 (f) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d)

10 Align Plate 143A5240-11 1 - Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d) LBL 24.75 - LBL 45.5

11 Align Break Panel 143A5240U31 1 (f) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d)

12 Align Plate 143A5240-2 1 (g) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d) LBL 45.5 - LBL 60

13 Align Break Panel 143A5240U37 1 (a) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d)

14 Align Plate 143A5240-13 1 (e) Match Drill Fastener Holes - - (b) Deburr Fastener Holes - - (j) Apply Chemical Conversion Coating Type 2, Class A - (c) Primer BMS 10-11, Type 1 - (d) RBL 60 - LBL 60 15 Apply Sealant BMS 5-95 - (h)

16 Install (New) Break Panel 143A5240U31 2 (i) 143A5240U33 1 143A5240U34 1 143A5240U37 1 143A5240U38 1 **STEP TASK NAME IDENTIFICATION QTY MORE DATA**

**(SHEET 4 OF 6) FIGURE 4: BREAK PANEL INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 81 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure. A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the number of fasteners necessary for this figure. (a) Position to match original position of the removed break panel on the crease beam and floor beam. (b) position new part to maintain an edge margin of 1.6D to 1.8D. (c) Apply one coat to cut surfaces of fastener holes. Refer to SOPM 20-43-03 as an accepted procedure. (d) Apply one coat to cut surfaces of fastener holes. Refer to SOPM 20-41-02 as an accepted procedure. (e) Position to match contour of new break panel at end in common with crease beam. (f) Position to match original position of the old break panel on the floor beams. (g) Position the plate so DISTANCE A and DISTANCE B are equal. (h) Apply sealant on faying surface between the break panels and floor beams. Refer to SOPM 20-50-19 as an accepted procedure. (i) See fastener code table below. (j) Break all sharp edges.

**STEP TASK NAME IDENTIFICATION QTY MORE DATA**



### COUNTERSINK FASTENER C D

EXAMPLE OF FASTENER SYMBOL LENGTH/GRIP FASTENER

6F
7 LETTER CODE DIAMETER (OPTIONAL) HEAD LOCATION N = NEAR SIDE F = FAR SIDE (OPTIONAL)

(OPTIONAL)S36173

**(SHEET 5 OF 6) FIGURE 4: BREAK PANEL INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 82 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

If the grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any of the fastener part numbers are not available or have been superseded, substitute fasteners may be supplied in Boeing kits, Boeing Document D-590 and Boeing drawing 65-88700 are used to determine the part numbers used as substitutes. **CODE NAME IDENTIFICATION HOLE DIA MORE DATA** A Bolt BACB30FL3-( ) 0.250 - 0.261 Install kept parts. Do not oversize existing holes on mating structures at crease beam and BL 0.0 track. Washer AN960PD10 - Nut NAS679A3W -

B Bolt BACB30FL4-2 0.313 - 0.327 Install kept parts. Do not oversize existing holes on mating track. Washer AN960PD416 - Nut NAS679A4W - C Rivet BACR15GF4D3 0.128 - 0.134 100 degree countersink on top side.

**(SHEET 6 OF 6) FIGURE 5: DRILL HOLES FOR FLOOR PANEL FASTENERS**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 83 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**FIGURE 5: DRILL HOLES FOR FLOOR PANEL FASTENERS**

This Figure applies to Group 1-4: The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. **STEP TASK NAME IDENTIFICATION QTY MORE DATA** 1 Locate (Kept) Floor Panels - 3 (a) 2 Install (Kept) Nutclips and Screws - 9 - 3 Align (Kept) Floor Panels - 2 (b) 4 Mark Fastener Holes - - (c) 5 Remove/Keep Floor Panels - 5 Between STA 520 and STA 540. 6 Drill Fastener Holes - - (d) 7 Install Floor Panels - 5 (e) FWD 1 5 9 LOCATIONS 3 5

7 7 1 5

7 10 7

4

6 LOCATIONS STA

2 1 5 9 LOCATIONS

4 6 5 3 4 6 6 LOCATIONS 2 520 STA 500 540 STA

12 LOCATIONS 6 4 537.45

STA

45.5 LBL

24.75 LBL

24.75 RBL

45.5 RBL 6 2 9 8

10 7 9 8

10 9 8

10 9 8

10 9 8 10 9 8 FLOOR PANELS (5 LOCATIONS)
11 12 13 14

11 12 13 14

11 12 13 14

11 12 13 14 11 12 13 14 11 12 13 14 11 12 13 14 11 12 13 14 11 12 13 14 11 12 13 14

OVER WING FLOOR PANEL (5 LOCATIONS) 6 4 11 12 13 14



### TYPICAL FLOOR PANEL CONFIGURATION1338600

**(SHEET 1 OF 2) FIGURE 5: DRILL HOLES FOR FLOOR PANEL FASTENERS**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 84 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

8 Mark Fastener Holes - - (f) 9 Remove (Kept) Floor panels - - At overwing area. 10 Drill Fastener Holes - - (g) 11 Deburr Fastener Holes - - Break all sharp edges. 12 Apply Chemical Conversion Coating Type 2, Class A - (h)

13 Apply Primer BMS 10-11, Type 1 - (i)

14 Install Nutclips - - (j) Screws - - (a) Locate by temporarily attaching to the floor panels at existing attach locations in the seat track link assembly at BL 0.0 and in the crease beams using kept clipnuts and screws or clipnuts and screw supplied in kit 65C38459-( ). (b) Center the floor panels between the seat track link assemblies, floor beams and attached floor panels in Step 1. The two floor panels are located between BL 24.75 and BL 45.5 on the left and right side. (c) Mark the fastener hole locations onto the seat track link assemblies and break panels from the existing fastener locations on the floor panels. (d) Maintain a minimum of 1.8 D edge margin. Drill 0.313 - 0.327 inch dia hole in seat track link assemblies and break panels to suit floor panel holes. (e) Temporarily install overwing floor panels at existing longitudinal floor beams using kept clip nuts and screws. (f) Mark the fastener holes locations onto break panels from existing holes on overwing floor panels. (g) Maintain a minimum of 1.8 D edge margin. Drill 0.313 - 0.327 inch dia hole in break panels to suit floor panel holes. (h) Apply one coat to cut surfaces of fastener holes. Refer to SOPM 20-43-03 as an accepted procedure. (i) Apply one coat to cut surfaces of fastener holes. Refer to SOPM 20-41-02 as an accepted procedure. (j) Using clip nuts and screws supplied in Kit 65C38459-( ).

**STEP TASK NAME IDENTIFICATION QTY MORE DATA**

**(SHEET 2 OF 2) FIGURE 6: BUSHING STRAP REWORK**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 85 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**FIGURE 6: BUSHING STRAP REWORK**

This Figure applies to Group 1-4: The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each seat track link assembly. **STEP TASK NAME IDENTIFICATION QTY MORE DATA** 1 Machine Bushing Strap 143A5595-30 1 (a) 2 Apply Cad Plate - - (b) 3 Install Filler-Washer NAS1149C0563R - (c)(d) (a) Machine the NAS538B6P037 bushing in the 143A5595-30 bushing strap. Maximum material removed is 0.06 inch. Contact the Boeing Company if more material needs to be removed. If bushing becomes loose from strap, rework bushing and install bushing to strap as given in SOPM 20-50-03 shrink fit (temperature differential) procedure. (b) Machine surface to 63 AA. Apply stylus cad plate. Refer to SOPM 20-42-05 as an accepted procedure. (c) Machine thickness to match material removed from the bushing in Bushing Strap 143A5595-30 to fill void. (d) If filler-washer is machined then passivate the machined surface. Refer to SOPM 20-30-03 as an accepted procedure. A A

FWD



### A-A UPPER FLANGE

2 3 1 SEAT TRACK LINK ASSEMBLY BUSHING STRAP1338601

**(SHEET 1 OF 1) FIGURE 7: TRACK SUPPORT REMOVAL**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 86 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

**FIGURE 7: TRACK SUPPORT REMOVAL**

This Figure applies to Group 4: A A FWD

FWD BL 0.0 LBL 45.5

RBL 24.75 537.45

STA

24.75 LBL 520 STA

A SEE

45.5 RBL 540 STA 520 STA 500 360 STA STA

STA 526.95



### A 1 SEAT TRACK LINK ASSEMBLY RBL 24.75



### A-A EXISTING TRACK SUPPORT 2 EXISTING

TRACK SUPPORT EXISTING TRACK SUPPORT 527 STA

SEAT TRACK LINK ASSEMBLY1351814

**(SHEET 1 OF 2) FIGURE 7: TRACK SUPPORT REMOVAL**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 87 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. **STEP TASK NAME IDENTIFICATION QTY MORE DATA**
1 Remove Bolt - 3 - Collar - 3
2 Remove Bolt - 4 - Collar - 4

**(SHEET 2 OF 2) FIGURE 8: TRACK SUPPORT INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 88 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

**FIGURE 8: TRACK SUPPORT INSTALLATION**

This Figure applies to Group 4: A A FWD

FWD BL 0.0 LBL 45.5

RBL 24.75 537.45

STA

24.75 LBL 520 STA

A SEE

45.5 RBL 540 STA 520 STA 500 360 STA STA

STA 526.95



### A NEW SEAT TRACK LINK

ASSEMBLY RBL 24.75



### A-A 1 EXISTING TRACK SUPPORT

C A 6N

8 B 6F 4

2 3 5 6 7 1 2 4 5 6 7

4 527 STA

EXISTING TRACK SUPPORT EXISTING

TRACK SUPPORT

NEW SEAT TRACK LINK

ASSEMBLY1351816

**(SHEET 1 OF 3) FIGURE 8: TRACK SUPPORT INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 89 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane.

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure. A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the number of fasteners necessary for this figure. **STEP TASK NAME IDENTIFICATION QTY MORE DATA** 1 Locate Support 65-46814-533 Or 65-46814-521 1 - 2 Match Drill Fastener Holes - 7 (a) 3 Countersink Fastener Holes - 3 (b) 4 Deburr Fastener Holes - 7 Break all sharp edges.

5 Apply Chemical Conversion Coating Type 2, Class A - (c)

6 Apply Primer BMS 10-11, Type 1 - (d) 7 Install Fasteners - 7 (e) (a) See fastener code table for hole sizes. (b) Countersink 100 degrees on upper side of seat track. Maintain a countersink depth so fastener will have a flushness of +/- 0.005 on the seat track. Refer to 737-100/200 SRM 51-30-08 as an accepted procedure. (c) Apply one coat of chemical conversion coating to fastener holes and countersinks. Refer to SOPM 20-43-03 as an accepted procedure. (d) Apply one coat of primer. Refer to SOPM 20-41-02 as an accepted procedure. (e) See fastener code table for fastener sizes.



### COUNTERSINK FASTENER C D

EXAMPLE OF FASTENER SYMBOL LENGTH/GRIP FASTENER

6F
7 LETTER CODE DIAMETER (OPTIONAL) HEAD LOCATION N = NEAR SIDE F = FAR SIDE (OPTIONAL)

(OPTIONAL)S36173

**(SHEET 2 OF 3) FIGURE 8: TRACK SUPPORT INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 90 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

If the grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any of the fastener part numbers are not available or have been superseded, substitute fasteners may be supplied in Boeing kits, Boeing Document D-590 and Boeing drawing 65-88700 are used to determine the part numbers used as substitutes. **CODE NAME IDENTIFICATION QTY HOLE DIA MORE DATA** A Bolt BACB30LX6A8 3 0.200 - 0.203 Collar BACC30AC6 3 - B Bolt BACB30FP6A4 4 0.200 - 0.203 Collar BACC30M6 4 -

**(SHEET 3 OF 3) FIGURE 9: ELECTRICAL BRACKET REMOVAL**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 91 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**FIGURE 9: ELECTRICAL BRACKET REMOVAL**

This Figure applies to Group 2-3: B B A A FWD

FWD BL 0.0 LBL 45.5

RBL 24.75 537.45

STA

24.75 LBL 520 STA

45.5 RBL 540 STA 520 STA 500 360 STA STA



### B-B 2

1 SEAT TRACK LINK ASSEMBLY

2 

### A-A 24.75 LBL

SEAT TRACK LINK ASSEMBLY1351817

**(SHEET 1 OF 2) FIGURE 9: ELECTRICAL BRACKET REMOVAL**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 92 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane. **STEP TASK NAME IDENTIFICATION QTY MORE DATA** 1 Remove Fasteners - 2 - 2 Support Electrical Bracket 69-73773-1 1 -

**(SHEET 2 OF 2) FIGURE 10: ELECTRICAL BRACKET INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 93 of 94 

### BOEING SERVICE BU **LLETIN 737-53-1260**

**FIGURE 10: ELECTRICAL BRACKET INSTALLATION**

This Figure applies to Group 2-3: B B FWD

FWD

1

2 NEW SEAT TRACK LINK ASSEMBLY

3 4 5 6 0.10 MIN

A 5 5 A 5 5 

### B-B 1 LBL 24.75

BUSHING STRAP STA 537.45

FLOOR BEAM 0.62



### A-A A A

UP

FWD NEW SEAT TRACK LINK ASSEMBLY BL 0.0 LBL 45.5

RBL 24.75 537.45

STA

24.75 LBL 520 STA

45.5 RBL 540 STA 520 STA 500 360 STA STA1351818

**(SHEET 1 OF 2) FIGURE 10: ELECTRICAL BRACKET INSTALLATION**  May 07, 2007 737-53-1260 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 94 of 94 

### BOEING SERVICE BULLETIN 737-53-1260

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane.

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure. A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the number of fasteners necessary for this figure. If the grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any of the fastener part numbers are not available or have been superseded, substitute fasteners may be supplied in Boeing kits, Boeing Document D-590 and Boeing drawing 65-88700 are used to determine the part numbers used as substitutes. **STEP TASK NAME IDENTIFICATION QTY MORE DATA** 1 Locate (Kept) Electrical Bracket 69-73773-1 1 (a) 2 Match Drill Holes - 2 (b) 3 Deburr Holes - 2 Break all sharp edges.

4 Apply Chemical Conversion Coating Type 2, Class A - (c)

5 Apply Primer BMS 10-11, Type 1 - (d) 6 Install Fasteners - 2 (e) (a) Use the measurements as given in the illustration. Maintain a minimum of 0.010 inch from bushing strap. (b) From the electrical bracket to new seat track link assembly. See fastener code table for hole sizes. (c) Apply one coat of chemical conversion coating to fastener holes. Refer to SOPM 20-43-03 as an accepted procedure. (d) Apply one coat of primer. Refer to SOPM 20-41-02 as an accepted procedure. (e) See fastener code table for fastener sizes.

**CODE NAME IDENTIFICATION QTY HOLE DIA MORE DATA** A Rivet BACR15FT5D5C 2 0.159 -0.165 - 

### COUNTERSINK FASTENER C D

EXAMPLE OF FASTENER SYMBOL LENGTH/GRIP FASTENER

6F
7 LETTER CODE DIAMETER (OPTIONAL) HEAD LOCATION N = NEAR SIDE F = FAR SIDE (OPTIONAL)

(OPTIONAL)S36173

**(SHEET 2 OF 2)**