# Boeing Special Attention Service Bulletin 737-53-1260: Revision 1 - Rights: © The Boeing Company. Filed by the FAA in regulations.gov docket FAA-2012-1317; AD 2013-24-13 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Boeing Special Attention Service Bulletin 737-53-1260](https://openairdocs.org/service-documents/boeing/sb-737-53-1260.md) - Title as filed: U.S. DOT/FAA - SB-737-53-1260-01 - Pages: 97 - PDF: https://openairdocs.org/files/sha256/b9/10/b910ca8917b0e47a30992d7f14e2ddb4b755a6d6b60203d055668107443eafda - Page: https://openairdocs.org/service-documents/boeing/sb-737-53-1260/file/b910ca8917b0 ## Text Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Commercial Airplanes 737 Service Bulletin SPECIAL ATTENTION Number: 737-53-1260 Original Issue: May 07, 2007 Revision 1: May 23, 2013 ATA System: 5321 SUBJECT: FUSELAGE - Passenger Cabin Floors - Station 520 to 540 - Seat Track Link Assemblies - Replacement/Modification Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws. 9E991ECCN: BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2007 Boeing. Unpublished Work. All Rights Reserved. Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company. Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, KC-10, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 1 of 97 4.0 ### Page 2 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 2 of 97 BOEING SERVICE BULLETIN 737-53-1260 BLANK PAGE ### Page 3 Table of Contents Revision Transmittal Sheet ............................................ 5 Summary ...................................................... 7 1. PLANNING INFORMATION ........................................ 1 1 A. Effectivity ............................................... 1 1 1. Airplanes ............................................ 1 1 2. Spares Affected ........................................ 2 4 B. Concurrent Requirements ...................................... 2 4 C. Reason ................................................ 2 4 D. Description .............................................. 2 5 E. Compliance .............................................. 2 6 F. Approval ............................................... 2 6 G. Manpower .............................................. 2 7 H. Weight and Balance Changes .................................... 3 0 I. Electrical Load Data ......................................... 3 1 J. References .............................................. 3 2 1. Existing Data: ......................................... 3 2 2. Data Supplied with this Service Bulletin: ........................... 3 2 3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 3 2 K. Publications Affected ........................................ 3 2 L. Interchangeability and Intermixability of Parts ........................... 3 3 M. Software Accomplishment Summary ................................ 3 3 2. MATERIAL INFORMATION ........................................ 3 5 A. Material - Price and Availability ................................... 3 5 B. Industry Support Information .................................... 3 5 C. Parts Necessary for Each Airplane ................................. 3 5 1. Kits/Parts: ........................................... 3 5 2. Parts and Materials Supplied by the Operator: ........................ 3 7 3. Parts Modified and Reidentified: ............................... 3 8 4. Parts Removed and Not Replaced: .............................. 3 9 D. Parts Necessary to Change Spares ................................. 3 9 E. Special Tooling - Price and Availability ............................... 3 9 F. Special Tooling Necessary to do this Service Bulletin ....................... 3 9 3. ACCOMPLISHMENT INSTRUCTIONS .................................. 4 1 A. GENERAL INFORMATION ..................................... 4 1 B. WORK INSTRUCTIONS ....................................... 4 2 FIGURE 1: EXISTING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION [Group 5] . . . 50 FIGURE 2: PANEL BREAK AND SEAT TRACK LINK ASSEMBLY REMOVAL [Group 1-4] ...... 5 3 FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION [Group 1-4] ............... 5 7 FIGURE 4: PANEL BREAK INSTALLATION [Group 1-4] ......................... 6 3 FIGURE 5: DRILL HOLES FOR FLOOR PANEL FASTENERS [Group 1-4] ............... 6 9 FIGURE 6: BUSHING STRAP REWORK [Group 1-4] ........................... 7 1 FIGURE 7: TRACK SUPPORT REMOVAL [Group 4] ........................... 7 3 FIGURE 8: TRACK SUPPORT INSTALLATION [Group 4] ........................ 7 5 FIGURE 9: ELECTRICAL BRACKET REMOVAL [Group 2-3] ...................... 7 8 FIGURE 10: ELECTRICAL BRACKET INSTALLATION [Group 2-3] .................... 8 0 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 3 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 4 FIGURE 11: PANEL BREAK AND SEAT TRACK LINK ASSEMBLY REMOVAL [Group 1-4] ...... 8 2 FIGURE 12: EXISTING SEAT TRACK LINK ASSEMBLY MODIFICATION [Group 1-4] ......... 8 6 FIGURE 13: PANEL BREAK AND SEAT TRACK LINK ASSEMBLY INSTALLATION [Group 1-4] . . . 92 FIGURE 14: FABRICATION INSTRUCTIONS - SEAT TRACK STRAP [Group 1-4] ........... 9 6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 4 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 5 Commercial Airplanes 737 Service Bulletin SPECIAL ATTENTION Revision Transmittal SheetNumber: 737-53-1260Original Issue: May 07, 2007 Revision 1: May 23, 2013 ATA System: 5321 SUBJECT: FUSELAGE - Passenger Cabin Floors - Station 520 to 540 - Seat Track Link Assemblies - Replacement/Modification This revision includes all pages of the service bulletin. COMPLIANCE INFORMATION RELATED TO THIS REVISION For Group 1-5, no more work is necessary on the airplane(s) changed in accordance with the Original Issue of this service bulletin. For Group 6, contact Boeing to get instructions for the inspection, change and/or repair for this service bulletin, and do the work instructed by Boeing. Federal Aviation Administration (FAA) Notice of Proposed Rule Making NPRM 2011-NM-194-AD, is related to this service bulletin. REASON FOR REVISION Terminology has been changed in the Work Instructions to agree with the terminology defined in Paragraph 3.A., General Information - Notes. Revision 1 is sent to: 1. Summary a. CONCURRENT REQUIREMENTS - Added concurrent statement for Group 6. b. BACKGROUND - Revised background paragraph and added Evaluation Table. c. ACTION - Revised to agree with the changes to the Work Instructions. d. COMPLIANCE - Added Notice of Proposed Rule Making e. INDUSTRY SUPPORT INFORMATION - Updated warranty notice date. 2. Paragraph 1.A., Airplanes - Updated airplanes groups. 3. Paragraph 1.B., Concurrent Requirements - Added concurrent statement for Group 6. 4. Paragraph 1.C., Reason - Revised reason paragraph. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 5 of 97 ### Page 6 5. Paragraph 1.D., Description - Revised to agree with the changes to the Work Instructions. 6. Paragraph 1.E., Compliance - Revised compliance statements. 7. Paragraph 1.G., Manpower - Updated manpower for Groups 1-4 airplanes. 8. Paragraph 1.H., Weight and Balance Changes - Updated weight and balance for Groups 1-4 airplanes. 9. Paragraph 1.J., References - Updated reference materials. 10. Paragraph 1.K., Publications Affected - Updated publication affected and added Damage Tolerance Based Structural Inspections statement. 11. Paragraph 1.M., Software Accomplishment Summary - Added a software accomplishment section. 12. Paragraph 2.A., Material - Updated Kit Number and Unit Price table. 13. Paragraph 2.B., Industry Support Information - Updated warranty notice date. 14. Paragraph 2.C., Parts Necessary For Each Airplane - Updated Kits/Parts and, Parts and Materials Supplied by the Operator. 15. Paragraph 2.E., Special Tooling - Price and Availability - Updated tool rental data. 16. Paragraph 3.A., GENERAL INFORMATION - Updated General Information notes. 17. Paragraph 3.B., WORK INSTRUCTIONS - Added modification option for Groups 1-4 airplanes. 18. FIGURE 1 - Corrected typographical error. 19. FIGURE 4 and FIGURE 8 - Updated part numbers. 20. FIGURE 10 - Corrected the minimum distance to maintain between Electrical Bracket and Bushing Strap in note (a). 21. FIGURES 11 through 14 - New figures added for modification option. Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location of important changes. Pages with no vertical lines have no important changes. REVISION HISTORY May 07, 2007Original Issue: May 23, 2013Revision 1: Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 6 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 7 Commercial Airplanes 737 Service Bulletin SPECIAL ATTENTION SummaryNumber: 737-53-1260Original Issue: May 07, 2007 Revision 1: May 23, 2013 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, 6: 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. 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. This table is provided to operators for planning purposes only. Refer to the applicable sections for more information. ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedYesSpares Affected Paragraph 1.E., ComplianceYesAD Related Paragraph 1.H., Weight and Balance ChangesYesWeight and Balance Change Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 7 of 97 ### Page 8 ReferenceAffectedPlanning Data Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Air- plane Flight Manual) Paragraph 2.C.1., Kits/PartsYesKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator YesOperator Supplied Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin YesSpecial Tooling Required ACTION (PRR 35005-252RS) 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 or do a seat track link assembly modification. 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. Group 6: On Group 6 airplanes, contact Boeing to get instructions for the inspection, change and/or repair for this service bulletin, 737-53-1260 Original Issue or 737-53-1260 Revision 1, and do the work instructed by Boeing. 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. Federal Aviation Administration (FAA) Notice of Proposed Rule Making NPRM 2011-NM-194-AD, is related to this service bulletin. Refer to Paragraph 1.E., Compliance. INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of January 25, 2002. Please refer to Paragraph 2.B., Industry Support Information. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 8 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 9 MANPOWER Refer to Paragraph 1.G., Manpower. MATERIAL INFORMATION Boeing Supplied Kits/Parts. Refer to Paragraph 2.A., Material - Price and Availability. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 9 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 10 (OCR) BOEING SERVICE BULLETIN 737-53-1260 STA STA 520 500 STA 540 0000 GROUPS 1-4 REPLACE OR DO A FASTENER MODIFICATION 537.45 STA STA 520 GROUP 5 DO A FASTENER MODIFICATION TO THE EXISTING TO THE EXISTING SEAT TRACK LINK ASSEMBLIES SEAT TRACK LINK ASSEMBLIES LBL 45.5 LBL 24.75 AFWD BL 0.O RBL 24.75 RBL - 45.5 GROUP 4-5 CONFIGURATION SIMILAR GROUP 1-3 CONFIGURATION SHOWN, 1338602 Original Issue: May 07, 2007 Revision 1: May 23, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 737-53-1260 Work - See page 1 for details. 10 of 97 ### Page 11 Commercial Airplanes 737 Service Bulletin SPECIAL ATTENTION Number: 737-53-1260 Original Issue: May 07, 2007 Revision 1: May 23, 2013 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 D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data. DESCRIPTIONCONFIGURATIONGROUP 737-200 passenger airplanes line number 292-1585 with common effectivity to service bulletin 737-53-1120 R01. -1 737 -300, -400 passenger airplanes line number 1001-1717 with an electrical bracket and with common effectivity to service bulletin 737-53-1120 R01. -2 737-300, -400, -500 passenger airplanes line number 1718-3132 with an electrical bracket. -3 737 -200 navigation trainer airplanes line number 317-363.-4 737-200C cargo airplanes line number 294-1113.-5 737-100, -200, -200C airplanes line number 1-291 (line numbers 1-291 were previously in Group 1 and Group 5 in the Original Issue of this service bulletin). -6 Airplane Models: 737-100, 737-200, 737-200C, 737-300, 737-400, 737-500 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 11 of 97 ### Page 12 GroupVariable Number 6PA001 - PA022 6PA099 6PA231 - PA232 6PC001 - PC005 6PG001 - PG075 6PG199 6PG201 - PG230 6PG251 - PG255 6PG271 - PG279 6PG301 - PG314 6PG331 - PG332 6PG351 - PG356 6PG375 6PG401 - PG403 6PG431 - PG442 6PG471 - PG475 6PG501 - PG505 6PG571 - PG583 1PG584 - PG586 6PG621 - PG630 6PG651 - PG652 6PG701 - PG705 1PH001 1PH011 - PH013 1PH021 - PH024 6PH701 - PH715 6PH731 - PH732 6PH741 - PH742 1PH743 6PJ001 - PJ002 1PJ003 - PJ009 6PJ031 - PJ032 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 12 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 13 GroupVariable Number 6PJ071 - PJ072 6PJ101 - PJ104 1PJ105 - PJ119 4PJ201 - PJ219 3PJ301 - PJ302 3PJ551 - PJ561 3PJ601 - PJ615 3PJ811 3PJ816 - PJ817 1PK026 - PK029 1PK041 - PK053 1PK061 - PK070 1PK081 - PK082 1PK091 - PK099 1PK101 - PK103 1PK111 - PK120 1PK141 - PK146 1PK201 - PK204 1PK211 - PK223 1PK231 - PK241 1PK251 - PK258 1PK271 - PK274 1PK281 - PK289 1PK291 1PK301 - PK318 1PK341 1PK351 - PK361 1PK391 1PK431 - PK433 1PK451 - PK452 1PK461 - PK469 1PK495 1PK501 - PK504 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 13 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 14 GroupVariable Number 1PK511 - PK515 1PK519 1PK521 - PK528 1PK541 - PK565 1PK581 1PK591 - PK599 1PK601 - PK617 1PK621 - PK637 1PK641 - PK642 1PK661 - PK666 1PK671 - PK681 1PK691 - PK697 1PK711 - PK716 1PK731 - PK765 1PK771 - PK779 1PK801 - PK804 1PK819 - PK827 1PK830 1PK861 - PK863 1PK871 - PK874 1PK881 - PK884 1PK901 - PK938 1PK971 - PK974 1PL001 - PL028 1PL061 1PL081 1PL101 - PL113 1PL151 1PL171 - PL172 1PL201 - PL203 1PL221 1PL401 - PL417 1PL421 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 14 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 15 GroupVariable Number 1PL441 1PL451 - PL456 1PL471 1PL491 1PL501 - PL506 1PL551 - PL562 1PL581 1PL601 - PL603 1PL611 1PL621 - PL626 1PL631 - PL632 6PL711 - PL712 6PL716 1PL717 - PL747 1PL756 1PL758 1PL761 - PL770 1PL781 - PL788 1PL793 6PL801 - PL803 1PM001 - PM006 1PM016 - PM017 1PM021 - PM023 1PM051 - PM066 1PM101 - PM119 1PM141 - PM142 1PM171 1PM181 1PM251 - PM255 1PM281 - PM283 2PM381 - PM383 3PM384 - PM399 3PM401 - PM417 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 15 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 16 GroupVariable Number 3PM541 - PM564 1PN001 - PN002 1PN021 - PN043 1PN081 - PN086 1PN101 - PN117 1PN131 - PN163 1PN401 - PN420 1PN431 - PN433 1PN451 - PN456 1PN471 - PN474 1PN481 1PN491 - PN493 1PN501 - PN502 1PN511 - PN512 1PN521 2PP001 - PP049 3PP050 - PP054 2PP101 - PP145 3PP146 - PP160 2PP161 - PP169 2PP181 - PP197 3PP198 - PP199 2PP201 - PP205 2PP221 2PP231 - PP243 2PP281 - PP286 2PP301 - PP305 2PP351 - PP353 2PP376 - PP384 2PP391 - PP393 2PP401 - PP440 2PP471 - PP475 2PP501 - PP507 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 16 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 17 GroupVariable Number 3PP508 - PP520 2PP521 - PP522 2PP631 - PP634 2PP651 - PP652 2PP671 - PP699 2PP701 - PP733 2PP771 - PP779 2PP801 - PP806 3PP807 - PP808 2PP821 - PP827 2PP831 - PP848 2PP851 - PP852 2PP861 - PP873 3PP874 - PP877 2PP891 - PP899 2PP901 - PP916 3PP917 - PP930 2PP931 - PP936 2PP946 - PP948 2PP951 - PP952 2PP961 - PP967 2PP981 - PP984 3PP985 - PP990 2PP991 3PP993 2PQ001 - PQ014 3PQ015 - PQ016 2PQ026 - PQ041 2PQ051 - PQ068 3PQ069 - PQ085 2PQ086 - PQ092 2PQ101 - PQ157 3PQ158 - PQ199 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 17 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 18 GroupVariable Number 3PQ201 - PQ202 2PQ221 - PQ226 3PQ227 - PQ230 2PQ231 - PQ236 3PQ237 2PQ241 - PQ243 2PQ251 - PQ255 3PQ256 - PQ267 2PQ281 - PQ282 3PQ283 - PQ299 2PQ301 - PQ303 3PQ304 - PQ307 3PQ331 - PQ332 3PQ341 - PQ348 3PQ361 - PQ373 3PQ391 - PQ395 3PQ401 - PQ418 3PQ421 3PQ431 - PQ438 3PQ447 - PQ448 3PQ451 3PQ454 3PQ471 - PQ475 3PQ479 - PQ481 3PQ486 - PQ487 3PQ491 - PQ493 3PQ771 - PQ772 3PQ791 - PQ793 3PQ801 - PQ805 3PQ931 - PQ935 3PQ951 3PQ971 - PQ997 3PR001 - PR017 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 18 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 19 GroupVariable Number 3PR021 - PR034 3PR041 - PR045 3PR061 - PR072 3PR077 - PR082 3PR091 - PR092 3PR096 3PR101 3PR121 - PR122 3PR131 - PR132 3PR141 - PR143 3PR161 - PR172 3PR181 3PS601 - PS631 3PS636 - PS638 2PS641 3PS642 - PS644 3PS651 - PS657 3PS666 - PS669 3PS691 - PS692 3PS701 - PS706 3PS751 - PS799 3PS811 3PS836 - PS837 3PS841 - PS846 3PS851 - PS852 3PS856 3PS861 - PS863 3PS866 - PS868 3PS871 - PS874 3PS896 - PS897 3PS901 - PS941 3PS956 - PS957 3PS961 - PS963 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 19 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 20 GroupVariable Number 3PS971 - PS978 3PT001 - PT015 3PT021 - PT031 3PT041 - PT064 3PT101 - PT105 3PT121 - PT138 3PT146 - PT148 3PT161 - PT170 3PT181 - PT188 3PT211 - PT220 3PT295 3PT301 - PT309 3PT331 - PT360 3PT381 - PT399 3PT401 - PT438 3PT501 - PT517 3PT561 - PT565 3PT581 - PT586 3PT611 - PT621 3PT641 - PT644 3PT651 - PT656 3PT671 - PT672 3PT681 - PT685 3PT701 - PT703 3PT716 - PT717 3PT721 - PT725 3PT801 - PT834 3PT851 - PT854 3PT871 - PT886 3PT901 - PT930 3PT971 - PT973 3PT981 - PT985 3PT996 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 20 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 21 GroupVariable Number 3PU001 - PU025 3PU301 3PU311 - PU313 2PV001 - PV017 3PV018 - PV055 3PV201 - PV209 3PV226 - PV229 3PV231 - PV237 3PV271 - PV272 3PV281 - PV287 3PV296 3PV301 - PV302 3PV351 3PV356 - PV357 2PW001 - PW013 3PW014 - PW054 2PW061 3PW062 - PW068 3PW072 3PW086 - PW088 2PW091 - PW092 3PW093 - PW094 3PW101 - PW102 3PW106 2PW111 - PW112 3PW113 - PW120 3PW156 - PW157 3PW161 - PW171 3PW201 - PW252 3PW261 - PW268 3PW271 - PW276 3PW278 3PW281 - PW293 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 21 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 22 GroupVariable Number 3PW296 3PW301 - PW327 3PW401 - PW408 3PW411 - PW418 3PW421 - PW424 3PW431 - PW435 3PW441 - PW450 3PW461 - PW467 2PW501 - PW502 3PW503 - PW504 2PW511 - PW514 3PW515 - PW522 3PW524 - PW550 3PW556 - PW557 2PW561 3PW562 - PW564 3PW571 - PW576 3PW591 - PW596 3PW611 - PW622 3PW631 - PW637 3PW661 - PW662 3PW681 - PW683 3PW701 - PW702 3PW711 - PW717 3PW741 - PW742 3PW761 3PW771 3PW831 3PW851 - PW856 6PX071 6PX701 6PY001 - PY008 6PY021 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 22 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 23 GroupVariable Number 5PY022 6PY031 5PY036 - PY037 5PY046 - PY048 5PY051 - PY053 5PY056 - PY057 5PY101 - PY103 5PY111 - PY113 5PY131 - PY135 5PY141 - PY143 5PY151 - PY154 5PY156 - PY157 5PY161 - PY162 5PY166 5PY191 5PY201 5PY221 - PY222 5PY231 5PY241 - PY244 5PY270 - PY275 5PY281 5PY286 6PY301 - PY304 6PY321 - PY323 6PY341 - PY346 6PY361 - PY362 6PY381 5PY401 5PY409 - PY411 5PY421 - PY422 5PY441 5PY451 5PY461 - PY463 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 23 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 24 GroupVariable Number 5PY591 - PY595 5PY611 - PY612 5PY621 5PY631 5PY651 5PY671 - PY672 5PY721 5PY741 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, 6: 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. 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. Revision 1 - Terminology has been changed in the Work Instructions to agree with the terminology defined in Paragraph 3.A., General Information - Notes. Revision 1 is sent to add a modification option for Groups 1-4, correct FIGURE 10 note and update kits/parts necessary for each airplane. To help in installation the updated kit components, panel breaks, have more material to trim on installation. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 24 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 25 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 or do a seat track link assembly modification. 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. Group 6: On Group 6 airplanes, contact Boeing to get instructions for the inspection, change and/or repair for this service bulletin, 737-53-1260 Original Issue or 737-53-1260 Revision 1, and do the work instructed by Boeing. Revision 1 - No work is necessary on airplanes changed in accordance with the Original Issue of this service bulletin. The work in this service bulletin is done in the maintenance zone(s) given below. Group 1, 4: Affected Maintenance Zones ZoneModel 1-7737-200 Group 2: Affected Maintenance Zones ZoneModel 107737-300, 737-400 Group 3: Affected Maintenance Zones ZoneModel 107737-300, 737-400, 737-500 Group 5: Affected Maintenance Zones ZoneModel 1-7737-200C Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 25 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 26 Group 6: Affected Maintenance Zones ZoneModel 1-7737-100, 737-200, 737-200C 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. Federal Aviation Administration (FAA) Notice of Proposed Rule Making NPRM 2011-NM-194-AD, is related to this service bulletin. Group 1: Do the seat track link assembly replacement or modification in accordance with Paragraph 3.B.1 within 60 months after the Original Issue date of this service bulletin. Group 2-3: Do the seat track link assembly replacement or modification in accordance with Paragraph 3.B.2 within 60 months after the Original Issue date of this service bulletin. Group 4: Do the seat track link assembly replacement or modification in accordance with Paragraph 3.B.3 within 60 months after the Original Issue date of this service bulletin. Group 5: Do the existing seat track link assembly fastener modification in accordance with Paragraph 3.B.4.a. within 60 months after the Original Issue date of this service bulletin. Group 6: On Group 6 airplanes, contact Boeing to get instructions for the inspection, change and/or repair for this service bulletin, and do the work instructed by Boeing within 30 days after the Revision 1 date of this service bulletin. F. Approval This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes. 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) 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. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 26 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 27 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 parts — Time to find the tools. This estimate does not include the task hour data given in the service bulletin in Paragraph 1.B., Concurrent Requirements. Group 1: Seat Track Link Assembly Replacement Elapsed HoursTask HoursNumber of Per- sons Task 1.503.002Open Access 3.253.251FIGURE 2 2.004.002FIGURE 3 5.5011.002FIGURE 4 3.507.002FIGURE 5 (a)(a)-FIGURE 6 1.503.002Close Access 17.25(a)31.25TOTAL FOR EACH AIRPLANE (a) More time may be required for each bushing strap reworked in accordance with FIGURE 6. Group 1: Seat Track Link Assembly Modification Elapsed HoursTask HoursNumber of Per- sons Task 1.503.002Open Access 3.253.251FIGURE 11 (a)(a)-FIGURE 14 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 27 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 28 Group 1: Seat Track Link Assembly Modification Elapsed HoursTask HoursNumber of Per- sons Task 3.5014.004FIGURE 12 3.253.251FIGURE 13 1.503.002Close Access 13.00(a)26.50TOTAL FOR EACH AIRPLANE (a) Time to make parts not estimated. More time may be required to make parts. Group 2-3: Seat Track Assembly Replacement Elapsed HoursTask HoursNumber of Per- sons Task 1.503.002Open Access 0.100.101FIGURE 9 3.253.251FIGURE 2 2.004.002FIGURE 3 5.5011.002FIGURE 4 3.507.002FIGURE 5 (a)(a)-FIGURE 6 0.300.301FIGURE 10 1.503.002Close Access 17.65(a)31.65TOTAL FOR EACH AIRPLANE (a) More time may be required for each bushing strap reworked in accordance with FIGURE 6. Group 2-3: Seat Track Link Assembly Modification Elapsed HoursTask HoursNumber of Per- sons Task 1.503.002Open Access 0.100.101FIGURE 9 3.253.251FIGURE 11 (a)(a)-FIGURE 14 3.5014.004FIGURE 12 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 28 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 29 Group 2-3: Seat Track Link Assembly Modification Elapsed HoursTask HoursNumber of Per- sons Task 3.253.251FIGURE 13 0.300.301FIGURE 10 1.503.002Close Access 13.40(a)26.90TOTAL FOR EACH AIRPLANE (a) Time to make parts not estimated. More time may be required to make parts. Group 4: Seat Track Link Assembly Replacement Elapsed HoursTask HoursNumber of PersonsTask 1.503.002Open Access 0.250.251FIGURE 7 3.253.251FIGURE 2 2.004.002FIGURE 3 5.5011.002FIGURE 4 3.507.002FIGURE 5 (a)(a)-FIGURE 6 1.001.001FIGURE 8 1.503.002Close Access 18.50(a)32.50TOTAL FOR EACH AIRPLANE (a) More time may be required for each bushing strap reworked in accordance with FIGURE 6. Group 4: Seat Track Link Assembly Modification Elapsed HoursTask HoursNumber of Per- sons Task 1.503.002Open Access 0.250.251FIGURE 7 3.253.251FIGURE 11 (a)(a)-FIGURE 14 3.5014.004FIGURE 12 3.253.251FIGURE 13 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 29 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 30 Group 4: Seat Track Link Assembly Modification Elapsed HoursTask HoursNumber of Per- sons Task 1.001.001FIGURE 8 1.503.002Close Access 14.25(a)27.75TOTAL FOR EACH AIRPLANE (a) Time to make parts not estimated. More time may be required to make parts. Group 5: Existing Seat Track Link Assembly Modification Elapsed HoursTask HoursNumber of PersonsTask 0.751.502Open Access 4.008.002FIGURE 1 0.751.502Close Access 5.5011.00TOTAL FOR EACH AIRPLANE Group 6: On Group 6 airplanes, contact Boeing to get instructions for the inspection, change and/or repair for this service bulletin, 737-53-1260 Original Issue or 737-53-1260 Revision 1, and do the work instructed by Boeing. H. Weight and Balance Changes Group 1: Seat Track Link Assembly Replacement Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane + 520+ 1.0737-100 + 520+ 1.0737-200 Group 1: Seat Track Link Assembly Modification Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane + 680+ 1.3737-100 + 680+ 1.3737-200 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 30 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 31 Group 2-3: Seat Track Link Assembly Replacement Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane + 520+ 1.0737-300 + 520+ 1.0737-400 + 520+ 1.0737-500 Group 2-3: Seat Track Link Assembly Modification Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane + 680+ 1.3737-300 + 680+ 1.3737-400 + 680+ 1.3737-500 Group 4: Seat Track Link Assembly Replacement Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane + 520+ 1.0737-200 Group 4: Seat Track Link Assembly Modification Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane + 680+ 1.3737-200 Group 5: Existing Seat Track Link Assembly Fastener Modification Change in Moment (Pound-Inches) Change in Weight (Pounds) Airplane + 1,000+ 1.9737-200C Group 6: On Group 6 airplanes, contact Boeing to get instructions for the inspection, change and/or repair for this service bulletin, 737-53-1260 Original Issue or 737-53-1260 Revision 1, and do the work instructed by Boeing. I. Electrical Load Data Not changed. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 31 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 32 J. References 1. Existing Data: a. Engineering Change Memo PRR 35005-252RS b. Boeing Service Bulletin 737-53-1120 R01 c. Boeing Service Related Problem (SRP) 737-SRP-53-0179 d. Federal Aviation Administration (FAA) Airworthiness Directive (AD) 98-11-04 R1 e. Federal Aviation Administration (FAA) Notice of Proposed Rule Making (NPRM) 2011-NM-194-AD f. Service Bulletin Index D6-19567 g. Standard Overhaul Practices Manual (SOPM) 20-30-03, 20-41-02, 20-42-05, 20-43-03, 20-50-02, 20-50-03, 20-50-10, 20-50-12, 20-50-19 h. 737-100/200 Aircraft Maintenance Manual (AMM) 25-22-0, 25-27-100, 53-21-0 i. 737-100/200 Structural Repair Manual (SRM) 51-20-01, 51-30-08 j. 737-300/400/500 Aircraft Maintenance Manual (AMM) 25-22-00, 25-27-15, 53-21-00 k. 737-300/-400/-500 Structural Repair Manual (SRM) 51-30-01, 51-40-08 2. Data Supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin: TitleDrawing Number FLOOR BEAM INSTL WING CENTER SECTION65-45410 SEAT TRACK & FLOOR STABILIZER INSTL - SECTION 4365-46814 The table above lists applicable drawings used to prepare this service bulletin. The drawings are not necessary to make the specified changes, and are not supplied with this service bulletin. The drawings may not be applicable to all airplane configurations or operators. K. Publications Affected 1. Publications: Chapter-SectionPublication 53-42737-100/-200 Illustrated Parts Catalog 53-21, 53-42737-300/-400/-500 Illustrated Parts Catalog Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 32 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 33 Chapter-SectionPublication 53-10737-100/-200 Structural Repair Manual 53-60737-300/-400/-500 Structural Repair Manual 2. Damage Tolerance Based Structural Inspections: Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary. L. Interchangeability and Intermixability of Parts Refer to Paragraph 2.C., Parts Necessary for Each Airplane, for interchangeability and intermixability information. M. Software Accomplishment Summary Not affected. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 33 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 34 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 34 of 97 BOEING SERVICE BULLETIN 737-53-1260 BLANK PAGE ### Page 35 2. MATERIAL INFORMATION A. Material - Price and Availability NOTE: Pivot Link kit is not required if Seat Track Link Assemblies modification is accomplished. Boeing can supply the kits/parts shown in Paragraph 2.C., Parts Necessary for Each Airplane, and Paragraph 2.D., Parts Necessary to Change Spares. Operators are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin. The kits/parts are subject to the terms and conditions of the Boeing standard purchase order acknowledgment. Prices are in United States Dollars. Terms: Net 30 days. Reference this service bulletin and submit your purchase order by one of these methods: 1. Order on-line via ATA Spec 2000 or The Boeing PART Page 2. Fax to (206) 662-7145 REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION Unit Price as of the Revision 1 date of this Ser- vice Bulletin (US Dollars) ROLT as of the Revision 1 date of this Service Bul- letin (Calendar Days) NameKit Number $26,684.00250KIT - PIVOT LINK, INTERCOSTAL STA 520 - STA 537.5 65C38459-3 $26,645.00250KIT - PIVOT LINK, INTERCOSTAL STA 520 - STA 537.5 65C38459-4 B. Industry Support Information Boeing warranty remedies are available for 737 airplanes in warranty as of January 25, 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. 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. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 35 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 36 Use KitAirplane Group 65C38459-41, 2, 3 65C38459-34 Kit 65C38459 NotesExisting Part Number NameQTYNew Part Number -3 (i)-4 (i) -KIT - PIVOT LINK, INTERCOSTAL STA 520 - STA 537.5 -.65C38459-3 -KIT - PIVOT LINK, INTERCOSTAL STA 520 - STA 537.5 .-65C38459-4 (a)(b)PLATE22143A5240-2 (a)(b)PLATE11143A5240-11 (a)(b)PLATE11143A5240-12 (a)(b)PLATE11143A5240-13 (a)(b)PLATE11143A5240-14 (a)(b)(c)PANEL BREAK DETAIL2265C38463-4 (a)(b)(c)PANEL BREAK DETAIL1165C38463-5 (a)(b)(c)PANEL BREAK DETAIL1165C38463-6 (a)(b)(c)PANEL BREAK DETAIL1165C38463-7 (a)(b)(c)PANEL BREAK DETAIL1165C38463-8 (a)(b)(d)SEAT TRACK LINK ASSY STA 520-54044143A5595-27 -BUSHING STRAP44143A5595-30 -BUSHING STRAP44143A5595-31 (b)BUSHING, PLAIN, NOMINAL SIZE BORE44BACB28Y4E178 -BOLT4.BACB30MC6A4 -BOLT3.BACB30LX6A8 (b)(e)BOLT44BACB30US4K29D (e)(f)BOLT1616BACB30VT8K5 -COLLAR3.BACC30AC6 (f)COLLAR1616BACC30BL8 -COLLAR4.BACC30BH6 (f)CLIP NUT2020BACN10VR1CG (f)CLIP NUT2727BACN10VR3CG (g)PIN, COTTER44BACP18BC02A06P Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 36 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 37 Kit 65C38459 NotesExisting Part Number NameQTYNew Part Number -3 (i)-4 (i) (g)PIN44BACP18BC02A08P (h)RIVET, UNIVERSAL HD22BACR15FT5D5C (f)RIVET, 100 DEG6666BACR15GF4D3 (f)FLOOR PANEL SCREWS4747BACS12GP3L16 (a) Discard the existing part. (b) You cannot use the existing part to replace the new or changed part. (c) To help in installation, part is built with more material. Trim to fit as required. (d) The one piece 143A5595-27 seat track link assembly replaces the existing seat track link assembly. (e) If the length of any fastener specified in this service bulletin does not meet installation standards given in SRM Chapter 51, then a fastener of the same specification, or an approved substitute, with a length which meets the installation standards given in SRM Chapter 51 may be used. In addition, washers may be in- stalled for fastener grip length in accordance with SRM Chapter 51. (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. (i) Kit number 65C38459-3 replaces kit number 65C38459-1. Kit number 65C38459-4 replaces kit number 65C38459-2. All kits are satisfactory for Seat Track Link Assemblies replacement, respectively. 2. Parts and Materials Supplied by the Operator: Group 1-4: Seat Track Link Assembly Replacement NotesNameQTYPart Number / Specification (a)Washer(a)NAS1149C0663R or equivalent CRES material (b)Chemical Conversion Coating16 OuncesType 2, Class A (c)Primer16 OuncesBMS 10-11, Type 1 (c)Sealant16 OuncesBMS 5-95, Class B -1/2, -2, -4 (d)Adhesive8 OuncesBAC 5010 TYPE 79 or TYPE 60 (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. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 37 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 38 Group 1-4: Seat Track Link Assembly Modification NotesNameQTYPart Number / Specification (a)Chemical Conversion Coating16 OuncesType 2, Class A (b)Primer16 OuncesBMS 10-11, Type 1 (b)Sealant16 OuncesBMS 5-95, Class B -1/2, -2, -4 (c)Adhesive8 OuncesBAC 5010 TYPE 79 or TYPE 60 (b)Corrosion Inhibiting Compound16 OuncesBMS 3-23, Type 2 Bolt36BACB30JC8A9 Collar36BACC30BH8 (d)Bolt8BACB30LR4-4 (d)Nut8BACN11Z4CD (a) Refer to SOPM 20-43-03 for supplier data. (b) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data. (c) Refer to SOPM 20-50-12 for supplier data. (d) There may be more parts than necessary. Group 5: NotesNameQTYPart Number / Specification (a)Bolt32BACB30JC8A9 (a)Bolt16BACB30JC8A5 (a)Collar48BACC30BH (b)Chemical Conversion Coating16 OuncesType 2, Class A (c)Primer16 OuncesBMS 10-11, Type 1 (c)Sealant16 OuncesBMS 5-95, Class B -1/2, -2, -4 (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. Group 6: On Group 6 airplanes, contact Boeing to get instructions for the inspection, change and/or repair for this service bulletin, 737-53-1260 Original Issue or 737-53-1260 Revision 1, and do the work instructed by Boeing. 3. Parts Modified and Reidentified: None. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 38 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 39 4. Parts Removed and Not Replaced: None. D. Parts Necessary to Change Spares None. E. Special Tooling - Price and Availability Boeing can supply the tool(s) shown in Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin. Operators are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin by e-mail to ServiceBulletinRentalLoanTools@boeing.com. The tool(s) are subject to the terms and conditions of the Boeing standard purchase order acknowledgement. Prices are in United States dollars. Terms: Net 30 days. Reference this service bulletin and submit your purchase order by one of these methods: 1. Order on-line via ATA Spec 2000 or Boeing Part Page 2. Fax to (425) 965-8237 Rental Data: Daily Price as of the Revision 1 date of this ser- vice bulletin (US Dollars) NameTool Kit Number $100LOCATING JIG SEAT TRACK PIVOT LINK MIT002A0018-1 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. NameTool Kit Number LOCATING JIG SEAT TRACK PIVOT LINK MIT002A0018-1 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 39 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 40 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 40 of 97 BOEING SERVICE BULLETIN 737-53-1260 BLANK PAGE ### Page 41 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 and fasteners are in Structural Repair Manual (SRM) Chapter 51 – Torque limits to tighten nuts and bolts are in SRM Chapter 51 4. Use the approved fastener and process material substitutions in accordance with SRM Chapter 51. 5. If the length of any fastener specified in this service bulletin does not meet installation standards given in SRM Chapter 51, then a fastener of the same specification, or an approved substitute, with a length which meets the installation standards given in SRM Chapter 51 may be used. In addition, washers may be installed for fastener grip length in accordance with SRM Chapter 51. 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 in other Boeing documents. When the words "refer to" are used and the operator has an accepted alternative procedure, the accepted alternative procedure can be used. When the words "in accordance with" are included in the instruction, the procedure in the Boeing document must be used. 8. Boeing Service Letter 737-SL-51-042, Damage Reporting and Repair Plan/Design Guidelines, is an acceptable procedure to request information from Boeing for additional structural repair instructions. The Service Letter describes what information must be provided to Boeing before a structural repair can be provided. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 41 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 42 9. If it is necessary to remove more parts for access, you can remove those parts. If you can get access without removing identified parts, it is not necessary to remove all of the identified parts. Jacking and shoring limitations must be observed. 10. Where the work instructions include installation of a kept part, a new or serviceable part with the same part number can be installed as an alternative to the kept part. 11. Shaded areas in Figures are to separate the non-critical and non-authoritative information from the critical and authoritative information. B. WORK INSTRUCTIONS 1. Group 1: a. Option 1: 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 panel break at body station 540. Use this data to drill fastener holes in the new seat track link assemblies and panel break for floor panel installation. (5) Remove the panel break and seat track link assemblies in accordance with FIGURE 2. NOTE: Mark the position of the panel break 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 panel break for installation. (6) Install new seat track link assemblies in accordance with 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 in accordance with FIGURE 6. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 42 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 43 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 panel break in accordance with FIGURE 4. (8) Drill holes for floor panels in accordance with FIGURE 5. (9) Install the passenger compartment floor panels with kept fasteners. Refer to 737-100/200 AMM 53-21-0 as an accepted procedure.. (10) Install the passenger carpets. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (11) Install the passenger seats. Refer to 737-100/200 AMM 25-22-0 as an accepted procedure. (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. b. Option 2: Seat Track Link Assembly 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 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. (5) Remove the panel break and seat track link assemblies in accordance with FIGURE 11. NOTE: When the break panel is removed from the structure, remove the panel carefully so it can be reinstalled. A removed panel must be reinstalled only in its original location. Mark the position of the panel break onto the floor beams forward of the seat track link assemblies and onto the crease beams before removal. Use this data to position the panel break during reinstallation. (6) Fabricate repair straps in accordance with FIGURE 14 (7) Do a modification of seat track link assemblies in accordance with FIGURE 12. (8) Install existing production panel break and seat track link assemblies in accordance with FIGURE 13. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 43 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 44 NOTE: Installation of kept production break panel, a new or serviceable part with the same part number can be installed as an alternative to the kept part. (9) Install the passenger compartment floor panels with kept fasteners. Refer to 737-100/200 AMM 53-21-0 as an accepted procedure.. (10) Install the passenger carpets. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (11) Install the passenger seats. Refer to 737-100/200 AMM 25-22-0 as an accepted procedure. (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. Option 1: 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 panel break at body station 540. Use this data to drill fastener holes in the new seat track link assemblies and panel break for floor panel installation. (5) Remove and support the electrical bracket in accordance with FIGURE 9. (6) Remove the panel break and seat track link assemblies in accordance with FIGURE 2. NOTE: Mark the position of the panel break 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 panel break for installation. (7) Install new seat track link assemblies in accordance with 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. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 44 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 45 (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 in accordance with 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 panel break in accordance with FIGURE 4. (9) Drill holes for floor panels in accordance with FIGURE 5. (10) Install electrical bracket in accordance with FIGURE 10. (11) Install the passenger compartment floor panels with kept fasteners. Refer to 737-300/400/500 AMM 53-21-00 as an accepted procedure. (12) Install the passenger carpets. Refer to 737-300/400/500 AMM 25-27-15 as an accepted procedure. (13) Install the passenger seats. Refer to 737-300/400/500 AMM 25-22-00 as an accepted procedure. (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. b. Option 2: Seat Track Link Assembly Modification (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. (5) Remove and support the electrical bracket in accordance with FIGURE 9. (6) Remove the panel break and seat track link assemblies in accordance with FIGURE 11. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 45 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 46 NOTE: When the break panel is removed from the structure, remove the panel carefully so it can be reinstalled. A removed panel must be reinstalled only in its original location. Mark the position of the panel break onto the floor beams forward of the seat track link assemblies and onto the crease beams before removal. Use this data to position the panel break during reinstallation. (7) Fabricate repair straps in accordance with FIGURE 14 (8) Do a modification of seat track link assemblies in accordance with FIGURE 12. (9) Install existing production panel break and seat track link assemblies in accordance with FIGURE 13. NOTE: Installation of kept production break panel, a new or serviceable part with the same part number can be installed as an alternative to the kept part. (10) Install electrical bracket in accordance with FIGURE 10. (11) Install the passenger compartment floor panels with kept fasteners. Refer to 737-300/400/500 AMM 53-21-00 as an accepted procedure. (12) Install the passenger carpets. Refer to 737-300/400/500 AMM 25-27-15 as an accepted procedure. (13) Install the passenger seats. Refer to 737-300/400/500 AMM 25-22-00 as an accepted procedure. (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. Option 1: 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 panel break at body station 540. Use this data to drill fastener holes in the new seat track link assemblies and panel break for floor panel installation. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 46 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 47 (5) Remove existing track support in accordance with FIGURE 7. (6) Remove the panel break and seat track link assemblies in accordance with FIGURE 2. NOTE: Mark the position of the panel break 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 panel break for installation. (7) Install new seat track link assemblies in accordance with 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 in accordance with 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 panel break in accordance with FIGURE 4. (9) Drill holes for floor panels in accordance with FIGURE 5. (10) Install track support in accordance with FIGURE 8. (11) Install the passenger compartment floor panels with kept fasteners. Refer to 737-100/200 AMM 53-21-0 as an accepted procedure. (12) Install the passenger carpets. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (13) Install the passenger seats. Refer to 737-100/200 AMM 25-22-0 as an accepted procedure. (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. b. Option 2: Seat Track Link Assembly 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. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 47 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 48 (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. (5) Remove existing track support in accordance with FIGURE 7. (6) Remove the panel break and seat track link assemblies in accordance with FIGURE 11. NOTE: When the break panel is removed from the structure, remove the panel carefully so it can be reinstalled. A removed panel must be reinstalled only in its original location. Mark the position of the panel break onto the floor beams forward of the seat track link assemblies and onto the crease beams before removal. Use this data to position the panel break during reinstallation. (7) Fabricate repair straps in accordance with FIGURE 14 (8) Do a modification of seat track link assemblies in accordance with FIGURE 12. (9) Install existing production panel break and seat track link assemblies in accordance with FIGURE 13. NOTE: Installation of kept production break panel, a new or serviceable part with the same part number can be installed as an alternative to the kept part. (10) Install track support in accordance with FIGURE 8. (11) Install the passenger compartment floor panels with kept fasteners. Refer to 737-100/200 AMM 53-21-0 as an accepted procedure. (12) Install the passenger carpets. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (13) Install the passenger seats. Refer to 737-100/200 AMM 25-22-0 as an accepted procedure. (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. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 48 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 49 (3) Install new fasteners in accordance with FIGURE 1. (4) Install the cargo compartment floor panels with kept fasteners. Refer to 737-100/200 AMM 53-21-0 as an accepted procedure. (5) Install the seat track covers. Refer to 737-100/200 AMM 25-27-100 as an accepted procedure. (6) Put the airplane back to a serviceable condition. 5. Group 6: On Group 6 airplanes, contact Boeing to get instructions for the inspection, change and/or repair for this service bulletin, 737-53-1260 Original Issue or 737-53-1260 Revision 1, and do the work instructed by Boeing. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1: May 23, 2013 49 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 50 (OCR) BOEING SERVICE BULLETIN 737-53-1260 This Figure applies only to: Group 5. STA 360 STA STA 500 520 STA 540 STA STA 520 537.45 LBL 45.5 LBL 24.75 _FWD BL 0.O RBL 24.75 RBL 45.5 1338593 FIGURE 1: EXISTING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION (SHEET 1 OF 3) Original Issue: May 07, 2007 Revision 1 May 23, 2013 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished 737-53-1260 Work - See page 1 for details. 50 of 97 ### Page 51 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. MORE DATAQTYIDENTIFICATIONNAMETASKSTEP (a)(b)4-Fastener HoleDrill1 (a)(c)8-Fastener HoleDrill2 (d)12-Fastener HoleCountersink3 Break all sharp edges.12-Fastener HoleDeburr4 (e)-BMS 5-95SealantApply5 (a)(f)4-FastenerInstall6 (a)(f)8-FastenerInstall7 (a)(g)(h)(i)1-GapCheck8 (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. FIGURE 1: EXISTING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION (SHEET 2 OF 3) Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1 May 23, 2013 51 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 52 MORE DATAQTYIDENTIFICATIONNAMETASKSTEP (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 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 ac- cepted procedure. (i) Apply one coat of primer BMS 10-11, Type 1. Refer to SOPM 20-41-02 as an accepted procedure. 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. MORE DATAHOLE DIAIDENTIFICATIONNAMECODE 0.247- 0.250BACB30JC8A( )BoltA BACC30BH8Collar FIGURE 1: EXISTING SEAT TRACK LINK ASSEMBLY FASTENER MODIFICATION (SHEET 3 OF 3) Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1 May 23, 2013 52 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 53 (OCR) BOEING SERVICE BULLETIN 737-53-1260 This Figure applies only to: Group 1-4. STA 360 STA STA 500 520 STA STA 540 STA 520 100000 537.45 SEE 00 AFWD LBL 45.5 SEE LBL 24.75 STA 537.45 BL 0.0 BREAK PANEL RBL SEAT TRACK 24.75 CREASE RBL BEAM 45.5 BREAK PANEL LBL SEAT TRACK 45.5 LINK ASSEMBLY FLOOR BEAM BREAK PANEL BREAK PANEL BL O.O FLOOR BEAM FIGURE 2: PANEL BREAK AND SEAT TRACK LINK ASSEMBLY REMOVAL (SHEET 1 OF 4) Original Issue: May 07, 2007 Revision 1 May 23, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 737-53-1260 Work - See page 1 for details. 53 of 97 ### Page 54 (OCR) BOEING SERVICE BULLETIN 737-53-1260 4 LOCATIONS 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. FIGURE 2: PANEL BREAK AND SEAT TRACK LINK ASSEMBLY REMOVAL (SHEET 2 OF 4) Original Issue: May 07, 2007 Revision 1 May 23, 2013 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished 737-53-1260 Work - See page 1 for details. 54 of 97 ### Page 55 MORE DATAQTYIDENTIFICATIONNAMETASKSTEP (a)--Floor Beams and Crease Beams Mark1 (b)4BoltBACB30FL3-2Remove/Keep2 4BoltBACB30FL3-3 8WasherAN960PD10 8NutNAS5679A3W 8BoltBACB30FL4-2 8WasherAN960PD416 8NutNAS679A4W -665-52894-( )Break PanelRemove (c)265-46819-2FillersRemove/Keep3 (d)4MS24665-134Cotter PinRemove4 4BACN10JD5NutRemove/Keep 4NAS1149C0563RWasher 4BACB30NR5DK28 Or BACB30NR5DK30 Bolt 4BACB28AK05-170 Or BACB28AK05-181 Bushing (e)8BACB28AT07B009A Or BACB28AT07B009C Bushing (f)4MS24665-134Cotter PinRemove5 4NAS1104-23DBolt 4NAS75-4-112Bushing 4BACN10JD104NutRemove/Keep 4AN960JD416Washer -465-45410-( )IntercostalRemove6 465-46813-( )Seat Track (a) Mark the position of the panel break 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 panel break during installation. (b) Nuts, bolts and washers located at the ends of each break panel are kept for installation of new panel break. (c) The fillers are between the seat track link assembly and the panel break at Buttock Line 0.0 only. (d) One for each seat track link assembly at the forward end of seat track link assembly. FIGURE 2: PANEL BREAK AND SEAT TRACK LINK ASSEMBLY REMOVAL (SHEET 3 OF 4) Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1 May 23, 2013 55 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 56 MORE DATAQTYIDENTIFICATIONNAMETASKSTEP (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. FIGURE 2: PANEL BREAK AND SEAT TRACK LINK ASSEMBLY REMOVAL (SHEET 4 OF 4) Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1 May 23, 2013 56 of 97 BOEING SERVICE BULLETIN 737-53-1260 ### Page 57 (OCR) BOEING SERVICE BULLETIN 737-53-1260 This Figure applies only to: Group 1-4. STA STA STA 537.45 520 360 SEE STA 540 0 0000ad0od09 • FWD LBL 45.5 LBL 24.75 BL 0.0 RBL 24.75 RBL 45.5 28 2 13 14 3 13) 4 LOCATIONS FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION (SHEET 1 OF 6) Original Issue: May 07, 2007 Revision 1 May 23, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 737-53-1260 Work - See page 1 for details. 57 of 97 ### Page 58 (OCR) BOEING SERVICE BULLETIN 737-53-1260 UPPER FLANGE 3 314 J -30 UP RIGHT A-A LOOKING FORWARD STA 537.45 SECTION 46 SEAT TRACK REF SEAT TRACK LINK ASSEMBLY + + 0.020 - 0.020 UP FWD < B-B 4 LOCATIONS FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION (SHEET 2 OF 6) Original Issue: May 07, 2007 Revision 1 May 23, 2013 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished 737-53-1260 Work - See page 1 for details. 58 of 97 ### Page 59 (OCR) BOEING SERVICE BULLETIN 737-53-1260 SECTION 43 CHANNEL RADIUS SEAT TRACK END • MIN. 0.17 16 17 18 25 26 FILLER AND FLOOR FASTENER HEAD BEAM 520 STA SEAT TRACK LINK ASSEMBLY END SEAT TRACK LINK ASSEMBLY MIN. 0.20 19/20/21 125/26 MIN. 0.20 PIVOT 0.40 LINK 10.70 SUPPORT CHANNEL EXISTING FLOOR BEAM REPAIR CUT AREA FWD C C-C FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION (SHEET 3 OF 6) Original Issue: May 07, 2007 Revision 1 May 23, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 737-53-1260 Work - See page 1 for details. 59 of 97/ ### Page 60 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. MORE DATAQTYIDENTIFICATIONNAMETASKSTEP 4 Locations (a)1143A5595-27Seat Track Link AssemblyAlign1 4 Locations (b) (c)1143A5595-30Bushing StrapPosition2 4 Locations (b) (c)1143A5595-31Bushing StrapPosition3 4 Locations. Assemble the bushing, bolt, washer and nut. Do not tighten the bolt and nut. 1BACB28Y4E178BushingInsert (New)4 1BACB30US4K29DBoltInsert (New)5 1AN960JD416WasherInstall (Kept)6 1BACN10JD104NutInstall (Kept)7 4 Locations.(d)2BACB28AT07B009A Or BACB28AT07B009C BushingInstall (Kept)8 4 Locations. Assemble the bushing, bolt, washer and nut. Do not tighten. the bolt and nut. 1BACB28AK05-170 Or BACB2BAK05-181 BushingInsert (Kept)9 1BACB30NR5DK28 Or BACB30NR5DK30 BoltInsert (Kept)10 1NAS1149C0563RWasherInstall (Kept)11 1BACN10JD5NutInstall (Kept)12 4 Locations.(c)-143A5595-30 and -31Bushing StrapInspect13 -143A5595-30 and -31Bushing StrapClamp14 4 Locations. (e)1143A5595-27Seat Track Link AssemblyInspect15 4 Locations. (f)1-Seat Track Link Assembly End Inspect16 4 Locations.(g)(h)1-Seat Track Link Assembly End Mark17 4 Locations. (g)(i)1-Seat Track Link Assembly End Cut18 4 Locations. (j)1-Support ChannelInspect19 4 Locations. (g)(k)1-Support ChannelMark20 4 Locations. (g)(l)1-Support ChannelCut21 4 Locations. (m)(n)1-Seat Track Link AssemblyInspect22 4 Locations. (g)(o)1-Seat Track Link AssemblyMark23 4 Locations. (g)(p)1-Seat Track Link AssemblyCut24 FIGURE 3: SEAT TRACK LINK ASSEMBLY INSTALLATION (SHEET 4 OF 6) Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 07, 2007 737-53-1260Revision 1 May 23, 2013 60 of 97 BOEING SERVICE BULLETIN 737-53-1260 The text continues at https://openairdocs.org/service-documents/boeing/sb-737-53-1260/file/b910ca8917b0.md?from=61 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.