# Boeing Alert Service Bulletin 737-57A1218: Revision 6 - Rights: © The Boeing Company. Filed by the FAA in regulations.gov docket FAA-2013-0542; AD 2014-05-12 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Boeing Alert Service Bulletin 737-57A1218](https://openairdocs.org/service-documents/boeing/737-57a1218.md) - Title as filed: U.S. DOT/FAA - SB-737-57A1218-06 - Pages: 69 - PDF: https://openairdocs.org/files/sha256/7a/ed/7aed3ab028da7db3d20e7f117b3d76e167ce2a03bdfcb320c0e17f948b64d44d - Page: https://openairdocs.org/service-documents/boeing/737-57a1218/file/7aed3ab028da ## 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 ALERT Number: 737-57A1218 Original Issue: July 22, 1993 Revision 6: June 09, 2011 ATA System: 5752 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle Repair and Life Limiting Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 730-774). 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all export laws. 9E991ECCN: BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 1993 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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, 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, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and the Boeing livery are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 1 of 69 4.0 ### Page 2 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 2 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT 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 2 B. Concurrent Requirements ...................................... 2 3 C. Reason ................................................ 2 3 D. Description .............................................. 2 4 E. Compliance .............................................. 2 6 F. Approval ............................................... 2 7 G. Manpower .............................................. 2 8 H. Weight and Balance Changes .................................... 2 8 I. Electrical Load Data ......................................... 2 8 J. References .............................................. 2 9 1. Existing Data: ......................................... 2 9 2. Data supplied with this Service Bulletin: ........................... 2 9 3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 9 K. Publications Affected ........................................ 3 0 L. Interchangeability and Intermixability of Parts ........................... 3 0 2. MATERIAL INFORMATION ........................................ 3 1 A. Material - Price and Availability ................................... 3 1 B. Industry Support Information .................................... 3 1 C. Parts Necessary For Each Airplane ................................. 3 1 1. Kits/Parts: ........................................... 3 1 2. Parts and Materials Supplied by the Operator: ........................ 3 1 3. Parts Modified and Reidentified: ............................... 3 1 4. Parts Removed and Not Replaced: .............................. 3 1 D. Parts Necessary to Change Spares ................................. 3 1 E. Special Tooling - Price and Availability ............................... 3 1 F. Special Tooling Necessary to do this Service Bulletin ....................... 3 1 3. ACCOMPLISHMENT INSTRUCTIONS .................................. 3 3 A. GENERAL INFORMATION ..................................... 3 3 B. WORK INSTRUCTIONS ....................................... 3 4 FIGURE 1: CARRIAGE SPINDLE INSPECTION AND REPAIR ..................... 3 8 FIGURE 2: MINIMUM ALLOWABLE SPINDLE DIAMETER ....................... 4 1 FIGURE 3: APPLICATION OF CARRIAGE TEMPORARY SERIAL NUMBERS ............. 4 3 FIGURE 4: APPLICATION OF CARRIAGE PERMANENT SERIAL NUMBERS ............. 4 5 Appendix A: EXISTING PARTS ACCOUNTABILITY ............................ 4 7 Appendix B: CARRIAGE MANUFACTURED DATES ............................ 4 8 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 3 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 4 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 4 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT BLANK PAGE ### Page 5 Commercial Airplanes 737 Service Bulletin ALERT Revision Transmittal SheetNumber: 737-57A1218Original Issue: July 22, 1993 Revision 6: June 09, 2011 ATA System: 5752 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle Repair and Life Limiting This revision includes all pages of the service bulletin. COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Airworthiness Directive AD 2010-15-08 is related to this service bulletin. No more work is necessary on the airplane(s) changed in accordance with the Revision 5 of this service bulletin. REASON FOR REVISION This revision is sent to change the compliance time from 48,000 flight cycles to 40,000 flight cycles in both Group 1 and Group 2 tables, and to correct the typo in the Figure 2 graphic. These sections were changed: 1. In Section 1.E. Compliance, the compliance time was reduced from 48,000 flight cycles to 40,000 flight cycles in both Group 1 and Group 2 tables, added reference to AD 2010-15-08 2. In Section 1.F. Approval, added the alternative method of compliance paragraph for AD 2010-15-08. 3. In Section 1.K. Publication Affected , added the Damage tolerance statement. 4. In Section 3.A. General Information, updated the general notes. 5. In Section 3.B. Work Instruction, updated the instructions to use the current refer to & in accordance with terminology. 6. In Figure 2, the -27 was moved from the Outboard spindle view to the Inboard spindle view to agree with the tables in Figure 2 and the Description Section. 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. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 5 of 69 ### Page 6 REVISION HISTORY July 22, 1993Original Issue: August 15, 1996Revision 1: September 30, 1999Revision 2: July 25, 2002Revision 3: June 19, 2007Revision 4: February 09, 2009Revision 5: Revision 6: BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 6 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 7 Commercial Airplanes 737 Service Bulletin ALERT SummaryNumber: 737-57A1218Original Issue: July 22, 1993 Revision 6: June 09, 2011 ATA System: 5752 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle Repair and Life Limiting THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER. CONCURRENT REQUIREMENTS None BACKGROUND This service bulletin provides instructions for removal, inspection and overhaul/rework of the outboard midflap carriage spindle. This is to make sure that any corrosion is found and repaired before fractures occur. This service bulletin also provides instructions to add a serial number to the carriage for tracking purposes. Outboard midflap carriages are made life limited and must be tracked. Fractures that resulted from stress corrosion and pitting have been reported along the length of the spindle and spindle diameter. Several operators have reported thirty five outboard carriage spindle fractures that resulted from corrosion since 1969. The most critical fractures occur at the forward end of the spindle through the large diameter. Of the thirty five reported fractures due to corrosion, three have occurred at this critical location. These fractures occurred on 737 -100 through -500 airplanes. Several operators have also reported seven carriage spindle fractures that resulted from fatigue, eight of which occurred at the critical location. These fractures occurred on 737-200 and -300 airplanes. There also have been many additional reports of corrosion on the outboard flap carriage spindles. One fractured carriage spindle can be compensated for by the pilot with inputs to the aileron and/or rudder. However fractures of both the inboard and outboard spindles (at the critical location) on a given outboard flap may preclude continued safe flight and landing of the airplane. Boeing Service Related Problem (SRP) 737-57-0147 is related to this service bulletin. ACTION (PRR 35005-260RS) Remove the outboard flaps, and disassemble the outboard flap carriages. Look for corrosion, pitting and/or cracks. Refer to the 737-100/-200/-200C Overhaul Manual (OHM) 57-53-35 or the 737-300/-400/-500 Component Maintenance Manual (CMM) 57-53-36 for repair, overhaul and assembly instructions. If the damage is beyond the repair limits for diameters shown in this service bulletin, then the carriage must be discarded. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 7 of 69 ### Page 8 If a carriage with a documented history has exceeded its life limitations detailed in this service bulletin, or if the carriage history cannot be documented, discard and replace the carriage with a life limited, serialized part within the time shown in Paragraph 1.E., Compliance. If a carriage is within the limits of its documented life, serialize it or use the existing serial number and begin tracking the carriage within the time shown in Paragraph 1.E., Compliance. EFFECTIVITY 737-100/ -200/ -200C/ -300/ -400/ and -500 Airplanes line numbers 1 through 3132. COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directive AD 2010-15-08 is related to this service bulletin. Refer to Paragraph 1.E., Compliance. INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection and repair procedures given in this service bulletin. MANPOWER Refer to Paragraph 1.G., Manpower. MATERIAL INFORMATION Operator Supplied Parts/Materials. Refer to Paragraph 2.A., Material - Price and Availability. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 8 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 9 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 9 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 10 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 10 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT BLANK PAGE ### Page 11 Commercial Airplanes 737 Service Bulletin ALERT Number: 737-57A1218 Original Issue: July 22, 1993 Revision 6: June 09, 2011 ATA System: 5752 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle Repair and Life Limiting THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER. 1. PLANNING INFORMATION A. Effectivity 1. Airplanes Refer to Service Bulletin Index Document D6-19567, Part 3 for Airplane Variable Number, Line Number, and Serial Number data. This service bulletin is for the airplanes shown below. DESCRIPTIONCONFIGURATIONGROUP 737-100, -200 and -200C airplanes, line numbers 1 through 1585.-1 737-300, -400 and -500 airplanes, line numbers 1001 through 3132.-2 Airplane Models: 737-100, 737-200, 737-200C, 737-300, 737-400, 737-500 GroupVariable Number 1PA001 - PA022 1PA099 1PA231 - PA232 1PC001 - PC005 1PG001 - PG075 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 11 of 69 ### Page 12 GroupVariable Number 1PG199 1PG201 - PG230 1PG251 - PG255 1PG271 - PG279 1PG301 - PG314 1PG331 - PG332 1PG351 - PG356 1PG375 1PG401 - PG403 1PG431 - PG442 1PG471 - PG475 1PG501 - PG505 1PG571 - PG586 1PG621 - PG630 1PG651 - PG652 1PG701 - PG705 1PH001 1PH011 - PH013 1PH021 - PH024 1PH701 - PH715 1PH731 - PH732 1PH741 - PH743 1PJ001 - PJ009 1PJ031 - PJ032 1PJ071 - PJ072 1PJ101 - PJ119 1PJ201 - PJ219 2PJ301 - PJ302 2PJ551 - PJ561 2PJ601 - PJ615 2PJ811 2PJ816 - PJ817 1PK026 - PK029 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 12 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 13 GroupVariable Number 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 1PK511 - PK515 1PK519 1PK521 - PK528 1PK541 - PK565 1PK581 1PK591 - PK599 1PK601 - PK617 1PK621 - PK637 1PK641 - PK642 1PK661 - PK666 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 13 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 14 GroupVariable Number 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 1PL441 1PL451 - PL456 1PL471 1PL491 1PL501 - PL506 1PL551 - PL562 1PL581 1PL601 - PL603 1PL611 1PL621 - PL626 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 14 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 15 GroupVariable Number 1PL631 - PL632 1PL711 - PL712 1PL716 - PL747 1PL756 1PL758 1PL761 - PL770 1PL781 - PL788 1PL793 1PL801 - PL803 1PM001 - PM006 1PM016 - PM017 1PM021 - PM023 1PM051 - PM066 1PM101 - PM119 1PM141 - PM142 1PM171 1PM181 1PM251 - PM255 1PM281 - PM283 2PM381 - PM399 2PM401 - PM417 2PM541 - PM564 1PN001 - PN002 1PN021 - PN043 1PN081 - PN086 1PN101 - PN117 1PN131 - PN163 1PN401 - PN420 1PN431 - PN433 1PN451 - PN456 1PN471 - PN474 1PN481 1PN491 - PN493 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 15 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 16 GroupVariable Number 1PN501 - PN502 1PN511 - PN512 1PN521 2PP001 - PP054 2PP101 - PP169 2PP181 - PP199 2PP201 - PP205 2PP221 2PP231 - PP243 2PP281 - PP286 2PP301 - PP305 2PP351 - PP353 2PP376 - PP384 2PP391 - PP393 2PP401 - PP440 2PP471 - PP475 2PP501 - PP522 2PP631 - PP634 2PP651 - PP652 2PP671 - PP699 2PP701 - PP733 2PP771 - PP779 2PP801 - PP808 2PP821 - PP827 2PP831 - PP848 2PP851 - PP852 2PP861 - PP877 2PP891 - PP899 2PP901 - PP936 2PP946 - PP948 2PP951 - PP952 2PP961 - PP967 2PP981 - PP991 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 16 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 17 GroupVariable Number 2PP993 2PQ001 - PQ016 2PQ026 - PQ041 2PQ051 - PQ092 2PQ101 - PQ199 2PQ201 - PQ202 2PQ221 - PQ237 2PQ241 - PQ243 2PQ251 - PQ267 2PQ281 - PQ299 2PQ301 - PQ307 2PQ331 - PQ332 2PQ341 - PQ348 2PQ361 - PQ373 2PQ391 - PQ395 2PQ401 - PQ418 2PQ421 2PQ431 - PQ438 2PQ447 - PQ448 2PQ451 2PQ454 2PQ471 - PQ475 2PQ479 - PQ481 2PQ486 - PQ487 2PQ491 - PQ493 2PQ771 - PQ772 2PQ791 - PQ793 2PQ801 - PQ805 2PQ931 - PQ935 2PQ951 2PQ971 - PQ997 2PR001 - PR017 2PR021 - PR034 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 17 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 18 GroupVariable Number 2PR041 - PR045 2PR061 - PR072 2PR077 - PR082 2PR091 - PR092 2PR096 2PR101 2PR121 - PR122 2PR131 - PR132 2PR141 - PR143 2PR161 - PR172 2PR181 2PS601 - PS631 2PS636 - PS638 2PS641 - PS644 2PS651 - PS657 2PS666 - PS669 2PS691 - PS692 2PS701 - PS706 2PS751 - PS799 2PS811 2PS836 - PS837 2PS841 - PS846 2PS851 - PS852 2PS856 2PS861 - PS863 2PS866 - PS868 2PS871 - PS874 2PS896 - PS897 2PS901 - PS941 2PS956 - PS957 2PS961 - PS963 2PS971 - PS978 2PT001 - PT015 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 18 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 19 GroupVariable Number 2PT021 - PT031 2PT041 - PT064 2PT101 - PT105 2PT121 - PT138 2PT146 - PT148 2PT161 - PT170 2PT181 - PT188 2PT211 - PT220 2PT295 2PT301 - PT309 2PT331 - PT360 2PT381 - PT399 2PT401 - PT438 2PT501 - PT517 2PT561 - PT565 2PT581 - PT586 2PT611 - PT621 2PT641 - PT644 2PT651 - PT656 2PT671 - PT672 2PT681 - PT685 2PT701 - PT703 2PT716 - PT717 2PT721 - PT725 2PT801 - PT834 2PT851 - PT854 2PT871 - PT886 2PT901 - PT930 2PT971 - PT973 2PT981 - PT985 2PT996 2PU001 - PU025 2PU301 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 19 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 20 GroupVariable Number 2PU311 - PU313 2PV001 - PV055 2PV201 - PV209 2PV226 - PV229 2PV231 - PV237 2PV271 - PV272 2PV281 - PV287 2PV296 2PV301 - PV302 2PV351 2PV356 - PV357 2PW001 - PW054 2PW061 - PW068 2PW072 2PW086 - PW088 2PW091 - PW094 2PW101 - PW102 2PW106 2PW111 - PW120 2PW156 - PW157 2PW161 - PW171 2PW201 - PW252 2PW261 - PW268 2PW271 - PW276 2PW278 2PW281 - PW293 2PW296 2PW301 - PW327 2PW401 - PW408 2PW411 - PW418 2PW421 - PW424 2PW431 - PW435 2PW441 - PW450 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 20 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 21 GroupVariable Number 2PW461 - PW467 2PW501 - PW504 2PW511 - PW522 2PW524 - PW550 2PW556 - PW557 2PW561 - PW564 2PW571 - PW576 2PW591 - PW596 2PW611 - PW622 2PW631 - PW637 2PW661 - PW662 2PW681 - PW683 2PW701 - PW702 2PW711 - PW717 2PW741 - PW742 2PW761 2PW771 2PW831 2PW851 - PW856 1PX071 1PX701 1PY001 - PY008 1PY021 - PY022 1PY031 1PY036 - PY037 1PY046 - PY048 1PY051 - PY053 1PY056 - PY057 1PY101 - PY103 1PY111 - PY113 1PY131 - PY135 1PY141 - PY143 1PY151 - PY154 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 21 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 22 GroupVariable Number 1PY156 - PY157 1PY161 - PY162 1PY166 1PY191 1PY201 1PY221 - PY222 1PY231 1PY241 - PY244 1PY270 - PY275 1PY281 1PY286 1PY301 - PY304 1PY321 - PY323 1PY341 - PY346 1PY361 - PY362 1PY381 1PY401 1PY409 - PY411 1PY421 - PY422 1PY441 1PY451 1PY461 - PY463 1PY591 - PY595 1PY611 - PY612 1PY621 1PY631 1PY651 1PY671 - PY672 1PY721 1PY741 2. Spares Affected None. However, spare carriages are subject to the requirements of paragraph 1.E., Compliance. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 22 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 23 B. Concurrent Requirements None. C. Reason This service bulletin provides instructions for removal, inspection and overhaul/rework of the outboard midflap carriage spindle. This is to make sure that any corrosion is found and repaired before fractures occur. This service bulletin also provides instructions to add a serial number to the carriage for tracking purposes. Outboard midflap carriages are made life limited and must be tracked. Fractures that resulted from stress corrosion and pitting have been reported along the length of the spindle and spindle diameter. Several operators have reported thirty five outboard carriage spindle fractures that resulted from corrosion since 1969. The most critical fractures occur at the forward end of the spindle through the large diameter. Of the thirty five reported fractures due to corrosion, three have occurred at this critical location. These fractures occurred on 737 -100 through -500 airplanes. Several operators have also reported seven carriage spindle fractures that resulted from fatigue, five of which occurred at the critical location. These fractures occurred on 737-200 and -300 airplanes. There also have been many additional reports of corrosion on the outboard flap carriage spindles. One fractured carriage spindle can be compensated for by the pilot with inputs to the aileron and/or rudder. However fractures of both the inboard and outboard spindles (at the critical location) on a given outboard flap may preclude continued safe flight and landing of the airplane. Boeing Service Related Problem (SRP) 737-57-0147 is related to this service bulletin. Revision 1 was sent to reference the overhaul manual and component maintenance manual for repair instruction in paragraph 3., Accomplishment Instruction. Revision 2 was sent to: — Add compliance information to Paragraph 1. E., Compliance and Summary page 1. — Add Maintenance Manual Subjects for 737-300/-400/-500 in steps A and B in paragraph 3. E., Accomplishment Instructions. — Remove sulfamate-nickel plating in paragraph 3. E., Accomplishment Instructions. This will give more selections in the referenced overhaul manual and component maintenance manual. Revision 3 was sent to: — Upgrade the Service Bulletin to Alert status. — Update the compliance information, by reducing the interval to 12,000 cycles or 8 years of service, which ever comes first, in Paragraph 1. E., Compliance and Summary page 1. — Updated inspection requirements to cover the entire spindle for corrosion, pitting and cracks. — Update the service findings information in the Background Section. — Added airplane line numbers 2450 - 3132. Revision 4 is sent to put a life limit on the outboard midflap carriages to prevent fractures of the carriage spindle. Fractures of both the inboard and outboard spindles (at the critical location) on a given outboard flap may preclude continued safe flight and landing of the airplane. This revision also gives instructions on how to serialize the outboard midflap carriages and how to determine the accumulated flight cycles for undocumented carriages. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 23 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 24 Changes in this revision include: — Planning Section - New compliance information is added. — Accomplishment Instructions - New instructions are added (Part 2) to instruct operators how to apply a serial number to a carriage and how to determine the accumulated flight cycles of an undocumented carriage. — Figures - Figure 2 is added to measure the carriage spindle diameter. — Figures - Figure 3 is added to show how and where to apply a temporary serial number to a carriage. — Figures - Figure 4 is added to show how and where to apply a permanent serial number to a carriage. — Appendices - Appendix A (Parts Accountability) is deleted. All carriages are subject to the requirements of paragraph 1.E., Compliance. — Appendices - Appendix B is added to list some of the applicable carriage serial numbers with their date of manufacture dating back to 1995. Records of carriages prior to 1995 are no longer available at Boeing. The data given in Information Notice 737-57A1218 IN 01 is included in this revision. Revision 5 is sent to revise the variable/group listing in the Effectivity section for 737-200C to Group 1 airplanes, as stated through out the service bulletin. Two new dash numbers, -29 and -31were added to Group 2 Outboard and Inboard carriage part numbers in Table 1 of the Description section of this service bulletin. The minimum allowable diameter "C" was changed to 0.9046 two places for 737-300/400/500 outboard spindles in Figure 2. Revision 6 is sent to change the compliance time from 48,000 flight cycles to 40,000 flight cycles in both Group 1 and Group 2 tables, and to correct the typo in the Figure 2 graphic. D. Description Remove the outboard flaps, and disassemble the outboard flap carriages. Look for corrosion, pitting and/or cracks. Refer to the 737-100/-200/-200C Overhaul Manual (OHM) 57-53-35 or the 737-300/-400/-500 Component Maintenance Manual (CMM) 57-53-36 for repair, overhaul and assembly instructions. If the damage is beyond the repair limits for diameters shown in this service bulletin, the carriage must be discarded. If a carriage with a documented history has exceeded its life limitations detailed in this service bulletin, or if the carriage history cannot be documented, discard and replace the carriage with a life limited, serialized part within the time shown in Paragraph 1.E., Compliance. If a carriage is within the limits of its documented life, serialize it or use the existing serial number and begin tracking the carriage within the time shown in Paragraph 1.E., Compliance. The airplane effectivity is divided in 2 groups because of differences in carriage configuration. Group 1 airplanes are 737-100, -200 and -200C, Group 2 airplanes are 737-300, -400, and -500. The airplanes are divided as shown in table 1 below. Table 1. Carriage Part Num- ber Carriage Assembly Part NumberCarriage LocationGroup BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 24 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 25 Table 1. 65-47821-6, -8,65-46481-1, -11, -12, -15, -16, -17, -18, -21, -22, -23, -24, -27, -28, -31, -32, -33, -34, -37, -38, -39, -40, -41, -42, -45, -46, -49, -50, -51, -52, -53, -54, -55, -56, -57, -58, -59, -60, -61, -62, -65, -66, -67, -69, -70, -72, -73, -74, -75, -76, -81, -82, -85, -86, -95, -96, -137, -138, -139 Inboard (WBL 254) and Outboard (WBL 355) Group 1 -10, -12, -16, -20, - 22, -24, -26, -28, - 30 65-79949-1, -2, -3, -4, -5, -6, -7, -8, -9, -10 65-67159-1, -5, -7, -9 65-46481-13, -14, -19, -20, -25, -26, - 63, -64, -68, -83, -84, -153, -154 Inboard (WBL 254) and Outboard (WBL 355) Group 1 65C27409-5, -9, - 13, -17, -25, -29 65-46481-87, -88, -91, -92, -97, -98, - 101, -102, -111, -112, -115, -116, -121, -122, -123, -124, -135, -136, -145, -146, -149, -150 Outboard (WBL 355)Group 2 65C27409-6, -10, - 18, -21, -23, -27, - 31 65-46481-89, -90, -93, -94, -103, -104, -105, -106, -107, -108, -109, -110, -113, -114, -117, -118, -119, -120, -133, -134, -143, -144, -147, -148 Inboard (WBL 254)Group 2 Revision 1 - no more work is necessary on airplanes changed as shown in the initial release of this service bulletin. Revision 2 - no more work is necessary on airplanes changed as shown in the initial release of this service bulletin. See section 1. E., Compliance for subsequent overhauls. Revision 3 - more work is necessary on airplanes inspected as shown in the initial release, Revision 1 or 2 of this service bulletin. See section 1. E., Compliance for subsequent inspection and overhaul requirements. Revision 4 - more work is necessary on airplanes changed as shown in the initial release, Revision 1, Revision 2 or Revision 3 of this service bulletin. Outboard midflap carriages should have serial numbers applied to them so their accumulated flight cycles can be tracked. Outboard midflap carriages are now life limited. Revision 5 - no more work is necessary on airplanes changed as shown in revision 4 of this service bulletin. Revision 6 - no more work is necessary on airplanes changed as shown in revision 5 of this service bulletin. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 25 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 26 NOTE: Due to common access requirements Boeing recommends operators work service bulletin 737-57A1256 at the same time as this bulletin for 737-100/-200 and -200C airplanes. 1. 2. Due to common access requirements Boeing recommends operators work service bulletin 737-57A1277 at the same time as this bulletin. 3. Inspection and maintenance instructions are shown in Section 3., ACCOMPLISHMENT INSTRUCTIONS. 4. If the damage is beyond the repair limits shown in Figure 2 of this service bulletin the carriage must be removed from service, discarded, and replaced with a serialized carriage. The work in this service bulletin is done in the maintenance zone(s) given below. Group 1: Affected Maintenance Zones ZoneModel 3-7, 4-7737-100, 737-200, 737-200C Group 2: Affected Maintenance Zones ZoneModel 307, 407737-300, 737-400, 737-500 E. Compliance Federal Aviation Administration (FAA) Airworthiness Directive AD 2010-15-08 is related to this service bulletin. Boeing recommends that the operator do an initial inspection and overhaul at 12,000 flight cycles or 8 years or service, whichever comes first. This is from the most recent carriage overhaul or installation of a new carriage or airplane delivery. If the carriage has completed more than 12,000 flight cycles or 8 years of service since an overhaul or a new carriage was installed, Boeing recommends the following inspection and overhaul times: — For 737-100/-200 and -200C: Within 1 year of the release date of revision 3 to this service bulletin. — For 737-300/-400 and -500: Within 2 years of the release date of revision 3 to this service bulletin. After the initial inspection and overhaul as given in Revision 3 to this service bulletin, continue regular scheduled inspection and overhauls at 12,000 flight cycles or 8 years of service, whichever comes first. Boeing recommends that all 737 Classic carriages are replaced as follows: BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 26 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 27 Group 1: 737-100/-200 and -200C airplanes. Outboard Flap (Inboard Carriage WBL 254 and Outboard Carriage WBL 355) Compliance TimeActionCondition Within 3 years from the release of Revision 4 of this service bulletin OR within 7,500 flight cycles from the release of Revision 4 of this service bulletin, whichever occurs first. Replace the carriage with a new or documented carriage. (a) Airplanes with an un- documented carriage or a documented car- riage having over 40,000 total flight cy- cles. (a) Prior to the carriage accumulating 40,000 flight cycles OR as defined by one of the compliance criteria from above, whichever is later. New (zero time) carriages shall not go over 40,000 flight cycles. Replace the carriage with a new or documented carriage. (a) Airplanes with a docu- mented carriage having under 40,000 total flight cycles. (a) (a) A documented carriage is a carriage where the service life, in flight cycles, is known. A documented carriage must have less than 40,000 total flight cycles on it to be considered serviceable. An undocumented carriage is a carriage where the service life, in flight cycles, is unknown. Group 2: 737-300/-400 and -500 airplanes. Outboard Flap (Inboard Carriage WBL 254 and Outboard Carriage WBL 355) Compliance TimeActionCondition Within 6 years from the release of Revision 4 of this service bulletin. OR within 15,000 flight cycles from the release of Revision 4 of this service bulletin, whichever occurs first. Replace the carriage with a new or documented carriage. (a) Airplanes with an un- documented carriage or a documented car- riage having over 40,000 total flight cy- cles. (a) Prior to the carriage accumulating 40,000 flight cycles OR as defined by one of the compliance criteria from above, whichever is later. New (zero time) carriages shall not go over 40,000 flight cycles. Replace the carriage with a new or documented carriage. (a) Airplanes with a docu- mented carriage having under 40,000 total flight cycles. (a) (a) A documented carriage is a carriage where the service life, in flight cycles, is known. A documented carriage must have less than 40,000 total flight cycles on it to be considered serviceable. An undocumented carriage is a carriage where the service life, in flight cycles, is unknown. The inspections given in Service Bulletin 737-57A1277 still apply. 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. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 27 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 28 The Manager of the FAA Seattle Aircraft Certification Office (ACO) approves the accomplishment of the applicable inspections, investigative and corrective actions with the corresponding compliance times specified in Service Bulletin 737-57A1218 Revision 6 as an AMOC to the accomplishment of the applicable inspections, investigative and corrective actions with the corresponding compliance times specified in Service Bulletin 737-57A1218 Revision 5 required by paragraphs (i), (k), (l), (o), (p), (q), (r), and (s) of AD 2010-15-08 . When this service bulletin specifies contacting Boeing for repair instruction, the repair instructions must be approved by the FAA in accordance with paragraph (t) of the AD. All provisions of AD 2010-15-08 that are not specifically referenced in this paragraph remain fully applicable and must be complied with. 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 data below shows an estimate of the man-hours necessary to do this change for each airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator man-hour data if necessary. The estimate does not include lost time. These are some examples of lost time: — Time to adjust to the workplace — Time to schedule the work — Time to examine the work — Time to cure the materials — Time to make the parts — Time to find the tools. Elapsed Time (Hours) Man-HoursNumber of Persons Task 5306Open Access 122Examine 16322Repair 0.250.251Apply serial number 7426Close Access 133Test 30.25109.25TOTAL FOR EACH AIRPLANE H. Weight and Balance Changes None. I. Electrical Load Data Not changed. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 28 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 29 J. References 1. Existing Data: a. Engineering Change Memo PRR 35005-260RS and PRR 35014. b. Service Related Problem (SRP) 737-57-0147. c. 737 Maintenance Manual (AMM) Subjects 27-51-34, 27-51-44, 27-51-72 and 27-51-81. d. Overhaul Manual (OHM) 57-53-35 (737-100/-200/-200C airplanes). e. Component Maintenance Manual (CMM) 57-53-36 (737-300/-400/-500 airplanes). f. Boeing Standard Overhaul Practices Manual (SOPM) 20-50-10 and 20-30-02, 20-20-01. g. Boeing Standard Wiring Practices Manual SWPM 20-10-11, SWPM 20-10-12, SWPM 20-10-19. h. Boeing Service Bulletin 737-57A1256: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle Inspection and Repair. i. Boeing Service Bulletin 737-57A1277: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle - Inspection for Cracking. j. Federal Aviation Administration (FAA) Airworthiness Directive AD 2010-15-08. k. Boeing Service Letter 737-SL-51-042. 2. Data supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin: TitleDrawing Number Trailing Edge Flap Installation and Rigging Procedures65C16930 Carriage Sub Assy - Outboard Flap65C27409 Flap Instl - Outboard, Wing T.E. (top kit)65C34483 Mid/Aft Flap Assy - Outboard Flap65C34946 Flap Assembly, Outboard Flap65-46437 Carriage Assy, Outboard Flap, Wing65-46481 Carriage Assy - Outboard Flap65-47821 Carriage Assy - Outboard Flap65-67159 Carriage Assy Outbd Flap Wing (rework drawing)65-79949 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 29 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 30 K. Publications Affected 1. Publications: Chapter-SectionPublication 57-00 and 57-50737 Corrosion Prevention Manual 57-53-36Component Maintenance Manual 57-53-35Overhaul 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 affects FCS but no new DTIs are necessary. L. Interchangeability and Intermixability of Parts Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 30 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 31 2. MATERIAL INFORMATION A. Material - Price and Availability The operator can supply the parts and materials shown in Paragraph 2.C., Parts Necessary For Each Airplane and Paragraph 2.D., Parts Necessary to Change Spares. As an alternative, operators can purchase the parts from Boeing Spares. This service bulletin does not show the Boeing price and supply data. B. Industry Support Information Boeing warranty remedies are not available for the inspection and repair procedures given in this service bulletin. C. Parts Necessary For Each Airplane 1. Kits/Parts: None. 2. Parts and Materials Supplied by the Operator: None. 3. Parts Modified and Reidentified: None. 4. Parts Removed and Not Replaced: None. D. Parts Necessary to Change Spares Refer to the AMM, OHM and CMM Manuals for bearing replacement. E. Special Tooling - Price and Availability None. F. Special Tooling Necessary to do this Service Bulletin No special tools or equipment are necessary to do the change in this service bulletin. Also, maintenance and overhaul tools in manuals shown in Paragraph 1.J., References, can be necessary. Examine operator tool supply to make sure all necessary tools are available. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 31 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 32 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 32 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT BLANK PAGE ### Page 33 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. The instructions identified in Paragraph 3.B., Work Instructions and the Figure(s) give the recommended sequence of steps. The sequence of steps to do this service bulletin can be changed. 2. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for definition of the acronyms. 3. Obey all of the warnings and cautions given in the specified manual sections. 4. 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 5. Use the approved fastener and process material substitutions in accordance with SRM Chapter 51. Alternate fasteners are listed in SRM Chapter 51 and Boeing Drawing 65-88700. 6. Refer to the SWPM 20-10-11 and SWPM 20-10-12 for the wire installation procedures, and SWPM 20-10-19 for the wire separation requirements, as accepted procedures. 7. 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. 8. 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. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 33 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 34 9. 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. 10. 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. 11. Refer to Appendix B for manufacturing date and serial number for 65C27409-25 (Table B.1) and 65C27409-27 (Table B.2) carriages manufactured between October 1, 1995 and November 7, 2004.. 12. The instructions in Paragraph 3.B., Work Instructions and the figures can include operation of tools or test equipment. Boeing Engineering Tool Drawings, the Illustrated Tool and Equipment Manual, and the Special Tool and Ground Handling Drawing Index contain data on versions of the tools or test equipment that you can use. It is permitted to use replaced tools. It is not permitted to use superseded tools. 13. 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. 14. 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. The removed part can be discarded if a new or serviceable part is installed. 15. This service bulletin includes functional test procedures for the systems changed by this service bulletin. More functional tests can possibly be necessary in accordance with standard maintenance practices because of interruption to other airplane systems. 16. Some Boeing parts are supplied in a temporary configuration. Those parts are identified with a 'U', 'W', or 'Y' in place of the '-' (dash) in the part number. It is permitted to install parts identified with a 'U', 'W', or 'Y' as an alternative to the '-' (dash) part number. Boeing Drawing 005W0900 contains more data. B. WORK INSTRUCTIONS Part 1 - Outboard Flap Carriage Spindle Inspection and Repair 1. Remove the outboard trailing edge flaps. Refer to 737-100/200 AMM 27-51-72 or 737-300/400/500 AMM 27-51-34. 2. Remove the midflap carriages from the outboard midflap. Refer to 737-100/200 AMM 27-51-81 or 737-300/400/500 AMM 27-51-44. 3. Remove the CRES sleeve, if present, from the carriage spindle and discard. 4. Remove all finishes, coatings and plating from the spindle, in accordance with Figure 1. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 34 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 35 5. Perform a Detailed Inspection of the entire Carriage Spindle for corrosion and pitting and perform magnetic particle inspection for cracks in accordance with Figure 1. 6. Do an inspection of the Carriage Spindle in accordance with Figure 2 to make sure the spindle is not smaller than the minimum allowable diameter. If the carriage does not meet these requirements it must be removed from service and discarded. 7. Overhaul the Carriage Spindle and repair damage in accordance with OHM 57-53-35 (737-100/200/200C airplanes) or CMM 57-53-36 (737-300/400/500 airplanes). 8. Restore the spindle at the location of the removed sleeve in accordance with OHM 57-53-35 (737-100/200/200C airplanes) or CMM 57-53-36 (737-300/400/500 airplanes). 9. Assemble the carriage in accordance with OHM 57-53-35 (737-100/200/200C airplanes) or CMM 57-53-36 (737-300/400/500 airplanes). 10. Install the midflap carriages in the outboard midflap. Refer to 737-100/200 AMM 27-51-81 or 737-300/400/500 AMM 27-51-44. 11. Install the outboard trailing edge flaps. Refer to 737-100/200 AMM 27-51-72 or 737-300/400/500 AMM 27-51-34. 12. Put the airplane back in serviceable condition. Part 2 - Outboard Flap Carriage Addition of Serial Number and Tracking of Flight Cycles to Determine Serviceable Life 1. Track each carriage with a serial number that is added by this service bulletin or was added by manufacturing and replace the carriage when it reaches it's life limit in accordance with Paragraph 1.E., Compliance. 2. Examine records to see if the number of flight cycles have been recorded for any installed outboard flap carriage (carriage sub assembly). Refer to Appendix B for the 2 locations of the original serial number and part number applied during manufacturing, or in accordance with Figures 3 or 4 for the location of the new serial numbers. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 35 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 36 a. If the recorded past part usage information is available for the carriage, use the data to establish the number of flight cycles for the carriage when starting the tracking program. b. If the carriage flight cycles are not available, but records indicate that the carriage has not been removed from the airplane, use the airplane flight cycles to start the tracking program. c. If carriage flight cycles are not available and records indicate that the carriage may have come from one or more older airplanes in the same maintenance program, then use the airplane flight cycles from the oldest airplane in the maintenance program to start the tracking program. d. If carriage flight cycles are not available and the flight cycles of the oldest airplane in the maintenance program are unavailable, or if the carriage has ever been out of your maintenance program, or was obtained as a previously used spare, consider the carriage to be undocumented (in accordance with paragraph 1.E., Compliance). e. Appendix B contains the "Date of Manufacture" for 65C27409-25 and -27 carriages (manufactured from October 1995 to November 2004) to help determine the service history of an applicable carriage if required. Records of older carriages are no longer available at Boeing. 3. If a carriage has exceeded the life limit, follow the instructions in accordance with paragraph 1.E., Compliance to determine when it must be replaced. 4. Add a temporary serial number, if required, as follows: NOTE: This temporary serial number can be used until access is available for applying the permanent serial number to the carriage. The original manufacturing serial number location is not easily accessed and it may no longer be readable due to prior overhauls. a. Supply power to hydraulic system A. Refer to 737-100/200 AMM 27-51-0 or 737-300/400/500 AMM 27-51-00. b. Extend the outboard main flaps. Refer to 737-100/200 AMM 27-51-00 or 737-300/400/500 AMM 27-51-00. c. Remove power from hydraulic system A. Refer to 737-100/200 AMM 27-51-0 or 737-300/400/500 AMM 27-51-00. d. Apply temporary serial number in accordance with Figure 3. e. Supply power to hydraulic system A. Refer to 737-100/200 AMM 27-51-0 or 737-300/400/500 AMM 27-51-00. f. Retract the outboard main flaps. Refer to 737-100/200 AMM 27-51-00 or 737-300/400/500 AMM 27-51-00. g. Remove power from hydraulic system A. Refer to 737-100/200 AMM 27-51-0 or 737-300/400/500 AMM 27-51-00. h. Put the airplane back to a serviceable condition. 5. Add a permanent serial number, if required, as follows: BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 36 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 37 a. Remove the outboard flap track center fairings. Refer to 737-100/200 AMM 27-51-121 page 401 or 737-300/400/500 AMM 27-51-52 page 401. b. Add a permanent serial number in accordance with Figure 4. Use the same serial number used for the temporary serial number, if a temporary serial number was applied. NOTE: The original manufacturing serial number location is not easily accessed and it may no longer be readable due to prior overhauls. c. Install the outboard flap track center fairings. Refer to 737-100/200 AMM 27-51-121 page 401 or 737-300/400/500 AMM 27-51-52 page 401. d. Put the airplane back to a serviceable condition. NOTE: This permanent serial number should be added the next time the outboard flap track center fairings are removed. NOTE: The serial number should be added in addition to the serial number that was added in production. The serial number that was added in production is located in accordance with Figure 3. BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 37 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 38 (OCR) BOEING SERVICE BULLETIN 737-57A1218 ALERT ALERT SEE A SPINDLE BEARING BEARING SUPPORT 6 6 TRAILING EDGE FLAP OUTBOARD MIDFLAP CARRIAGE SEAL CARRIAGE SPINDLE 456 ) CRES SLEEVE CARRIAGE SPINDLE CORRODED AREA CORROSION IN AND UNDER SLEEVE FWD C AROUND BUSHED HOLE A-A C26220 CARRIAGE SPINDLE ONLY WITH SLEEVE FIGURE 1: CARRIAGE SPINDLE INSPECTION AND REPAIR (SHEET 1 OF 3) Original Issue: July 22, 1993 Revision 6 June 09, 2011 BOEING PROPRIETARY - 737-57A1218 Copyright © Unpublished Work - See page 1 for details. 38 of 69 ### Page 39 (OCR) BOEING SERVICE BULLETIN 737-57A1218 ALERT ALERT 5(6) NICKEL PLATE CARRIAGE SPINDLE CORROSION IN AND CORRODED AREA AROUND BUSHED HOLE A-A CARRIAGE SPINDLE ONLY WITHOUT SLEEVE - THERMAL CARRIAGE SPINDLE COATING CORROSION IN AND CORRODED AREA AROUND BUSHED HOLE FWD < A—A CARRIAGE SPINDLE ONLY WITHOUT SLEEVE D37572 The step numbers shown below agree with the numbers shown in the circle symbols in the figure. FIGURE 1: CARRIAGE SPINDLE INSPECTION AND REPAIR (SHEET 2 OF 3) Original Issue: July 22, 1993 Revision 6 June 09, 2011 BOEING PROPRIETARY - 737-57A1218 Copyright © Unpublished Work - See page 1 for details. 39 of 69 ### Page 40 NOTESPROCEDURENAMETASKSTEP AMM 27-51-72 orTrailing Edge FlapRemove1 AMM 27-51-34 AMM 27-51-81 orMidflap CarriageRemove2 AMM 27-51-44 (a)Cress SleeveRemove3 Note: When overhauling the spindle, all finishes, coatings and plating must be removed from the spindle. (a)SOPM 20-30-02FinishRemove4 (a)SOPM 20-30-02Coating (a)SOPM 20-30-02Plating Look for corrosion, pitting and cracks along the entire length of the spindle. Detailed InspectionCarriage SpindleInspect5 Inspect for cracks refer to SOPM 20-20-01. If cracks are found discard the car- riage. Magnetic Particle In- spection If damage is beyond the re- pair limits, the carriage must be discarded. OHM 57-53-35 or CMM 57-53-36 Carriage SpindleOverhaul / Repair 6 If applicable.(a) FIGURE 1: CARRIAGE SPINDLE INSPECTION AND REPAIR (SHEET 3 OF 3) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 40 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 41 (OCR) BOEING SERVICE BULLETIN 737-57A1218 ALERT ALERT C OUTBOARD SPINDLE OF CARRIAGE 65C27409-5/9/13/17/25 65-47821-6/8/10/12/16/20/22/24/26/28 65-67159-1/5/719 B FWD < INBOARD SPINDLE OF CARRIAGE 65C27409-6/10/18/21/23/27 D37573 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 carriage. FIGURE 2: MINIMUM ALLOWABLE SPINDLE DIAMETER (SHEET 1 OF 2) Original Issue: July 22, 1993 Revision 6 June 09, 2011 BOEING PROPRIETARY - 737-57A1218 Copyright © Unpublished Work - See page 1 for details. 41 of 69 ### Page 42 MORE DATAQTYIDENTIFICATIONNAMETASKSTEP (a)1-Spindle Diameter "A"Measure1 (a)1-Spindle Diameter "B"Measure2 (a)1-Spindle Diameter "C"Measure3 (a) Measure and record the spindle diameter "A" or "B" or "C". There can be the option of two possible carriages installed on the airplane as shown. If spindle diameter before plating/coating is less than detailed in the following list, remove carriage from service. Minimum Allowable DiameterInboard/OutboardEffective Part NumberAirplane Model "C""B""A" 0.83711.66681.6810Inboard and Out- board 65-47821-6/-8/-10/-12/-16737-100/200 0.83711.65901.6810Inboard and Out- board 65-47821-20/-22/-24/-26/-28737-100/200 0.88981.87921.8792Inboard and Out- board 65-67159-1/-5/-7737-100/200HGW 0.88981.87301.8792Inboard and Out- board 65-67159-9737-100/200HGW 0.90461.71991.7858Outboard65C27409-5/-9/-13/-17737-300/400/500 0.89391.81511.8800Inboard65C27409-6/-10/-18/-21/-23737-300/400/500 0.90461.71741.8111Outboard65C27409-25737-300/400/500 0.88271.81511.9409Inboard65C27409-27737-300/400/500 FIGURE 2: MINIMUM ALLOWABLE SPINDLE DIAMETER (SHEET 2 OF 2) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 42 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 43 (OCR) BOEING SERVICE BULLETIN 737-57A1218 ALERT ALERT SEE FLAP SEE TRACK FORWARD MIDFLAP FAIRING TRACK . FOREFLAP (EXTENDED) MIDFLAP _ CARRIAGE MIDFLAP (EXTENDED) AFTFLAP PUSHROD FWDS -AFTFLAP (EXTENDED) CARRIAGE CENTERLINE SERIAL NUMBER ADDED DURING FWD C PRODUCTION A-A D37574 TOP VIEW 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 3: APPLICATION OF CARRIAGE TEMPORARY SERIAL NUMBERS (SHEET 1 OF 2) Original Issue: July 22, 1993 Revision 6 June 09, 2011 BOEING PROPRIETARY - 737-57A1218 Copyright © Unpublished Work - See page 1 for details. 43 of 69 ### Page 44 MORE DATAQTYIDENTIFICATIONNAMETASKSTEP (a)4-Outboard Flap CarriageMark1 (b)--Serial NumberTrack2 (a) Mark serial numbers on all carriages in order to start tracking of the component. To get carriages with unique serial numbers, use your company three letter code or company name and a numerical sequence number as the serial number (example: XYZ001). The serial number must be different on each carriage. Mark within the area shown approximately in the illustration. Note: Use a rubber stamp to apply the temporary serial number within the approximate area shown in the illustration. Refer to SOPM 20-50-10 or apply with ink or paint as per an equivalent procedure. Do not use any of the methods detailed for the application of carriage permanent serial numbers given in Figure 4. (b) Reference Appendix B for the two locations of the original serial numbers and part numbers applied during manufacturing. FIGURE 3: APPLICATION OF CARRIAGE TEMPORARY SERIAL NUMBERS (SHEET 2 OF 2) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 44 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 45 (OCR) BOEING SERVICE BULLETIN 737-57A1218 ALERT ALERT SEE FLAP SEE TRACK FORWARD MIDFLAP FAIRING TRACK . FOREFLAP (EXTENDED) MIDFLAP CARRIAGE MIDFLAP (EXTENDED) AFTFLAP PUSHROD FLAP TRACK FAIRING SUPPORT ARM BELLCRANK FWDE AFTFLAP (EXTENDED) CARRIAGE CENTERLINE SERIAL NUMBER ADDED DURING PRODUCTION, ON THE FAR SIDE FWD C A-A 491339 BOTTOM VIEW 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 4: APPLICATION OF CARRIAGE PERMANENT SERIAL NUMBERS (SHEET 1 OF 2) Original Issue: July 22, 1993 Revision 6 June 09, 2011 BOEING PROPRIETARY - 737-57A1218 Copyright © Unpublished Work - See page 1 for details. 45 of 69 ### Page 46 MORE DATAQTYIDENTIFICATIONNAMETASKSTEP (a) (b)4-Outboard Flap CarriageMark1 (c)--Serial NumberTrack2 (a) Mark serial numbers on all carriages in order to start tracking of the component. To get carriages with unique serial numbers, use your company three letter code or company name and a numerical sequence number as the serial number (example: XYZ001). The serial number must be different on each carriage. Mark within the approximate area shown in the illustration. Note: Use one of the options below, or an equivalent procedure, to mark a serial number on a carriage. The maximum height of each character is to be 0.25 inches. It must be possible to read the serial number after all finishes are applied. Refer to SOPM 20-50-10. 1) Deep electro-chemical etch (0.006 to 0.009 inch deep). 2) Electric vibrating pencil (maximum 0.015 inch deep). 3) Spherical nose cutter (maximum 0.015 inch deep). 4) Dot Peen Marking. (b) This is where Boeing rubber stamped the part number, serial number and date of manufacture. (c) Reference Appendix B for the two locations of the original serial numbers and part numbers applied during manufacturing. FIGURE 4: APPLICATION OF CARRIAGE PERMANENT SERIAL NUMBERS (SHEET 2 OF 2) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 46 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 47 The Existing Parts Accountability table has been removed. All carriages are subject to the requirements of paragraph 1.E., Compliance. See Table 1 in paragraph 1.D., Description, for a list of carriage and carriage assembly part numbers. Appendix A: EXISTING PARTS ACCOUNTABILITY (SHEET 1 OF 1) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 47 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 48 This appendix contains information on 65C27409-25 (Table B.1) and 65C27409-27 (Table B.2) carriages manufactured between October 1, 1995 and November 7, 2004. Records of older carriages are no longer available at Boeing. The illustration below shows the location of this information on the carriage. The date of manufacture is the date of the final assembly acceptance. Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 1 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 48 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 49 (OCR) BOEING SERVICE BULLETIN 737-57A1218 ALERT ALERT THIS IS WHERE BOEING STEEL STAMPS OR VIBRO ENGRAVES THE SERIAL NUMBER DURING PRODUCTION. CARRIAGE CENTERLINE SERIAL NUMBER ADDED DURING FWD< PRODUCTION A-A TOP VIEW THIS IS WHERE BOEING RUBBER STAMPED THE PART NUMBER, SERIAL FWD NUMBER AND DATE OF MANUFACTURE DURING PRODUCTION. BOTTOM VIEW D72665 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 2 OF 22) Original Issue: July 22, 1993 Revision 6 June 09, 2011 BOEING PROPRIETARY - 737-57A1218 Copyright © Unpublished Work - See page 1 for details. 49 of 69 ### Page 50 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 1/10/199619285/5/199617593/1/19961279 1/10/199619295/5/199617603/1/19961280 1/10/199619315/5/199617613/1/19961281 1/10/199619325/10/199617663/1/19961282 10/1/199519335/10/199617673/1/19961362 10/1/199519345/10/199617683/1/19961364 10/1/199519355/10/199617693/1/19961371 10/1/199519368/22/199617773/1/19961374 3/18/199619445/30/199617823/18/19961570 2/19/199619485/30/199617833/18/19961573 2/19/199619535/30/199617847/1/19961577 2/19/199619585/30/199617853/12/19961593 4/17/199619614/17/199618273/12/19961595 6/20/199619654/17/199618286/4/19961597 6/20/199619704/17/199618293/12/19961605 6/20/199619735/16/199618313/5/19961627 7/16/199619775/16/199618325/16/19961629 5/3/199619815/16/199618333/5/19961632 8/21/199619825/20/199618343/5/19961634 9/2/199619835/20/199618353/11/19961645 5/3/199619845/20/199618363/11/19961646 9/10/199619855/20/199618373/11/19961647 5/3/199619861/24/199618983/11/19961648 6/20/199619872/20/199618996/26/19961710 9/10/199619882/20/199619006/26/19961711 8/21/199619893/13/199619016/26/19961712 8/22/199619902/20/199619026/26/19961713 8/22/199619912/20/199619036/26/19961714 8/21/199619921/24/199619046/26/19961715 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 3 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 50 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 51 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 8/22/199619931/24/199619056/26/19961716 8/22/199619941/24/199619146/26/19961717 8/25/199619951/24/199619154/15/19961750 8/25/199619962/6/199619174/15/19961752 8/21/199619972/6/199619194/15/19961754 9/7/199819981/24/199619204/15/19961756 8/21/199619991/24/199619215/5/19961758 5/15/1997238110/26/199620868/25/19962000 5/15/1997238210/26/199620878/22/19962003 5/15/1997238310/26/199620888/7/19962006 6/12/1997238411/13/199621308/22/19962007 6/12/1997238511/13/199621338/22/19962008 6/12/1997238611/13/199621348/7/19962009 6/12/1997238711/13/199621358/7/19962010 6/12/1997239711/26/199621368/7/19962011 6/12/1997239812/3/199621379/30/19962016 6/12/1997240011/26/199621399/30/19962017 6/12/1997240111/13/199621409/30/19962018 6/12/1997240211/13/199621429/30/19962019 8/20/1997240311/13/199621438/22/19962021 6/12/1997240411/13/1996214510/23/19962022 5/30/1997240511/24/1996214610/31/19962024 5/30/1997240611/24/1996215010/23/19962025 5/30/1997240711/24/1996215111/12/19962038 5/30/1997240811/24/1996215210/23/19962039 5/30/1997243112/3/1996215410/23/19962041 5/30/1997243311/2/1996215510/23/19962045 5/30/1997243511/2/1996215610/23/19962053 5/30/1997243611/2/1996215710/23/19962054 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 4 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 51 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 52 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 6/12/1997244611/2/1996215910/23/19962060 6/12/1997244812/3/1996216710/23/19962061 6/12/1997245011/26/199621726/27/19962068 6/12/1997245212/3/199621756/27/19962069 6/27/1997246511/26/199621776/27/19962070 6/12/1997252411/20/199621816/27/19962071 7/27/1997254211/20/1996218510/23/19962075 8/8/1997255411/20/1996218810/23/19962077 6/27/1997255511/20/1996219010/23/19962078 6/27/1997255612/18/1996221910/23/19962079 8/4/1997256112/18/1996222010/23/19962080 8/4/1997256212/18/199622218/19/19962082 8/4/1997256312/18/199622258/19/19962083 8/20/199725648/8/199723008/19/19962084 9/24/199725735/15/1997238010/26/19962085 8/25/199727167/15/1997263111/1/19972574 8/25/199727177/15/1997263211/1/19972575 10/8/199727188/4/1997264111/1/19972576 9/8/199727238/4/199726427/4/19972581 9/8/199727248/4/199726437/1/19972582 9/8/199727258/4/199726447/4/19972583 9/8/199727267/15/199726487/1/19972584 12/2/199727277/15/199726507/4/19972585 12/2/199727287/15/199726516/27/19972586 9/28/199727297/15/199726527/4/19972587 12/2/199727309/5/199726617/1/19972588 9/28/199727369/5/199726627/1/19972593 9/28/199727389/5/199726637/1/19972594 9/28/199727409/5/199726647/1/19972595 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 5 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 52 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 53 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 9/28/199727428/20/199726667/1/19972596 11/11/199727438/20/199726677/1/19972597 11/11/199727458/20/199726687/1/19972598 11/11/199727469/15/199726737/1/19972599 11/11/199727479/15/199726747/1/19972600 10/9/199727569/15/199726757/8/19972605 10/9/199727609/15/199726767/8/19972606 11/7/200427628/5/199726827/8/19972607 10/9/199727638/5/199726837/8/19972608 10/9/199727668/5/199726847/29/19972609 11/7/200427678/5/199726857/29/19972610 11/7/200427689/4/199726867/29/19972611 11/7/200427699/4/199726877/29/19972612 11/11/199727769/4/199726898/7/19972621 11/11/199727779/4/199726908/7/19972622 11/11/199727788/20/199726998/7/19972623 11/11/199727808/20/199727018/7/19972624 11/25/199727868/20/199727027/15/19972625 11/25/199727878/20/199727077/15/19972626 11/25/199727888/20/199727087/15/19972627 11/25/199727898/20/199727097/15/19972628 11/24/199727938/20/199727107/15/19972629 12/10/199727948/25/199727157/15/19972630 2/25/1998297012/18/1997288012/10/19972795 3/2/199829711/20/1998288212/10/19972796 3/2/1998297211/20/1997289412/10/19972797 3/2/199829731/20/1998291510/10/19972798 3/2/199829741/20/1998291610/10/19972799 3/1/199829751/20/1998291710/10/19972800 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 6 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 53 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 54 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 3/1/199829761/20/1998291810/10/19972801 3/1/199829771/3/199829232/12/19982812 3/1/199829781/3/199829242/12/19982813 6/26/199829951/7/199829252/12/19982814 7/28/199830021/3/199829263/1/19982815 7/28/199830031/9/199829312/10/19982820 7/28/199830041/9/199829322/10/19982821 7/28/199830051/9/199829332/10/19982822 9/14/199830241/9/199829342/10/19982823 9/14/199830251/8/199829356/11/19982827 9/14/199830261/8/199829362/16/19982828 9/14/199830271/8/199829382/16/19982829 9/2/199830281/8/199829392/16/19982830 9/2/199830291/23/199829402/16/19982831 9/2/199830301/23/199829421/27/19982832 9/2/199830311/23/199829431/27/19982833 9/5/199830441/23/199829441/27/19982834 9/5/199830452/1/199829471/27/19982835 9/5/199830461/8/199829542/24/19982852 9/5/199830471/8/199829552/24/19982853 8/26/199830521/8/199829562/24/19982854 9/2/199830531/20/199829582/24/19982855 8/26/199830541/20/199829601/29/19982865 9/2/199830552/25/199829611/29/19982866 8/26/199830561/20/199829621/29/19982867 9/2/199830571/20/199829641/29/19982868 9/2/199830592/25/199829651/25/19992869 3/28/199830621/20/199829661/4/19982875 3/28/199830631/20/199829671/5/19982876 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 7 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 54 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 55 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 3/28/199830641/20/199829681/3/19982877 3/28/199830652/25/199829691/3/19982878 3/16/1999B32516/23/199831834/13/19983087 3/21/1999B32526/23/199831844/13/19983089 6/3/1999B32686/13/199831854/13/19983090 6/2/1999B32696/26/199831904/13/19983091 6/2/1999B32706/26/199831913/16/19983104 6/14/1999B32716/26/199831923/16/19983105 4/22/1999B32732/10/2004B27403/16/19983106 5/12/1999B32749/11/2004B28963/16/19983107 5/12/1999B327710/21/1998B31944/21/20043108 3/29/1999B328110/21/1998B31954/21/20043109 2/26/1999B328811/30/1998B31964/21/20043110 6/14/1999B329910/21/1998B31976/9/19983116 6/14/1999B330011/12/1998B31984/15/19983117 6/16/1999B330511/12/1998B31994/15/19983118 6/16/1999B330611/12/1998B32006/16/19983119 6/14/1999B330711/12/1998B32017/9/19983124 4/22/1999B33132/26/1999B32067/15/19983125 5/12/1999B33142/26/1999B32097/9/19983126 5/12/1999B33152/23/1999B32107/15/19983127 12/21/2000B34172/3/1999B32118/3/19983136 12/19/2000B34182/23/1999B32127/9/19983137 12/21/2000B34192/3/1999B32138/23/19983138 5/8/2001B34471/20/1999B32147/9/19983139 4/30/2001B34492/3/1999B32155/11/19983144 5/8/2001B34501/20/1999B32165/11/19983145 4/16/2001B34532/3/1999B32185/11/19983146 4/5/2002B345611/5/1998B32275/11/19983147 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 8 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 55 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 56 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 4/16/2001B345811/5/1998B32288/12/19983148 5/5/2001B345911/5/1998B32304/21/19983156 12/19/2000B346111/5/1998B32314/21/19983157 8/24/2001B34651/20/1999B32324/21/19983158 10/25/2001B34662/10/1999B32364/21/19983159 8/21/2001B34691/20/1999B32385/11/19983178 8/18/2001B34711/25/1999B32407/9/19983179 7/12/2001B34724/22/1999B32415/11/19983180 10/25/2001B34773/29/1999B32475/11/19983181 11/27/2001B34793/16/1999B32506/23/19983182 2/25/2004B36274/11/2003B355711/15/2003B3482 11/12/2003B36355/20/2003B356011/15/2001B3483 1/23/2004B36365/20/2003B356111/6/2001B3485 11/11/2003B36374/23/2003B356310/1/2002B3489 11/21/2003B36381/29/2003B356510/1/2002B3490 10/16/2003B364410/10/2003B356610/30/2002B3491 10/16/2003B36455/20/2003B356710/28/2002B3492 10/6/2003B364611/2/2003B35691/10/2003B3496 10/14/2003B364711/12/2003B357011/27/2001B3497 1/23/2004B365411/12/2003B357111/27/2001B3498 1/28/2004B365511/12/2003B35732/7/2002B3504 4/2/2004B365611/12/2003B35744/1/2002B3505 1/21/2004B365710/13/2003B357921/6/2002B3507 1/16/2004B366210/13/2003B35814/2/2002B3508 1/6/2004B366310/3/2003B35825/30/2002B3509 1/16/2004B366410/4/2003B35835/30/2002B3510 1/23/2004B366510/3/2003B35844/27/2002B3511 11/23/2003B36661/6/2004B35907/26/2002B3512 1/23/2004B36671/6/2004B35914/27/2002B3513 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 9 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 56 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 57 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 1/23/2004B36681/6/2004B35921/30/2003B3516 1/23/2004B36691/6/2004B359310/11/2003B3521 12/20/2003B367011/26/2003B35986/11/2003B3523 11/22/2003B367211/26/2003B35996/11/2003B3525 1/31/2004B36741/16/2004B36006/30/2003B3528 1/16/2004B367512/11/2003B36016/30/2003B3529 5/15/2004B36961/6/2004B36028/25/2003B3530 3/6/2004B36971/23/2004B36035/1/2003B3534 3/10/2004B36981/6/2004B36044/5/2003B3536 3/17/2004B36991/23/2004B36054/5/2003B3537 2/27/2004B37001/6/2004B36104/12/2003B3539 2/27/2004B37011/6/2004B36117/2/2003B3541 4/13/2004B37031/6/2004B36127/2/2003B3542 2/25/2004B37041/16/2004B36136/4/2003B3543 4/5/2004B370511/19/2003B36197/2/2003B3544 2/1/2004B370611/19/2003B36217/2/2003B3550 2/10/2004B370711/19/2003B36236/30/2003B3552 2/20/2004B370811/19/2003B36267/8/2003B3555 8/14/2004B38633/17/2004B38123/18/2004B3709 6/6/2004B38643/29/2004B38132/15/2004B3710 5/13/2004B38655/24/2004B38172/15/2004B3711 6/6/2004B38666/21/2004B38183/18/2004B3712 5/13/2004B38673/29/2004B38192/29/2004B3737 5/12/2004B38685/12/2004B38202/25/2004B3738 4/30/2004B38694/28/2004B38212/15/2004B3739 6/21/2004B38803/17/2004B38222/27/2004B3741 6/22/2004B38813/10/2004B38232/6/2004B3742 10/6/2004B38893/29/2004B38242/6/2004B3743 10/5/2004B38905/13/2004B38252/27/2004B3744 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 10 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 57 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 58 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 10/9/2004B38913/18/2004B38262/6/2004B3746 9/15/2004B38929/11/2004B38274/12/2004B3753 10/6/2004B38933/18/2004B38283/10/2004B3754 9/11/2004B38944/8/2004B38293/17/2004B3755 10/6/2004B38954/2/2004B38302/29/2004B3756 8/14/2004B38985/12/2004B38312/27/2004B3758 10/18/2004B38995/15/2004B38322/25/2004B3759 9/9/2004B39006/6/2004B38332/25/2004B3760 10/6/2004B39025/3/2004B38346/6/2004B3771 10/6/2004B39035/15/2004B38355/24/2004B3774 10/6/2004B39043/29/2004B38404/2/2004B3778 7/25/2004B39065/12/2004B38415/27/2004B3779 8/20/2004B39076/14/2004B38423/10/2004B3792 8/29/2004B39085/13/2004B38433/10/2004B3793 8/20/2004B39095/13/2004B38443/17/2004B3795 6/14/2004B39114/2/2004B38453/20/2004B3796 8/21/2004B39165/24/2004B38465/13/2004B3797 8/15/2004B39205/15/2004B38533/20/2004B3798 8/5/2004B39323/18/2004B38553/16/2004B3800 6/26/2004B39355/15/2004B38566/10/2004B3802 6/26/2004B39376/21/2004B38575/24/2004B3803 10/6/2004B39445/13/2004B38584/2/2004B3804 10/3/2004B39545/15/2004B38594/28/2004B3805 6/21/2004B40045/15/2004B38605/17/2004B3806 6/21/2004B40054/2/2004B38615/27/2004B3808 6/22/2004B40066/14/2004B38628/14/2004B3811 8/16/1996P709210/6/2004B40576/21/2004B4008 7/27/1996P70978/14/2004B40586/21/2004B4020 6/13/1996P71128/21/2004B40596/26/2004B4021 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 11 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 58 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 59 TABLE B.1: 65C27409-25 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 6/20/1996P711610/18/2004B40778/5/2004B4023 6/24/1996P711710/6/2004B40788/22/2004B4024 6/20/1996P711810/9/2004B40798/20/2004B4025 10/16/1996P711910/6/2004B408010/6/2004B4026 7/27/1996P714410/17/2004B40816/14/2004B4027 6/20/1996P714610/18/2004B40828/14/2004B4028 8/16/1996P715510/9/2004B40836/26/2004B4029 8/14/1996P715710/18/2004B40848/27/2004B4030 7/17/1996P71608/27/2004B40858/21/2004B4032 10/29/1996P71758/21/2004B40868/29/2004B4033 10/16/1996P718410/18/2004B40967/25/2004B4034 10/16/1996P718510/18/2004B40976/21/2004B4035 8/16/1996P723410/18/2004B409910/6/2004B4040 6/20/1996P72426/13/1996P699010/6/2004B4041 10/16/1996P72456/24/1996P702010/18/2004B4042 10/16/1996P724710/29/1996P702510/6/2004B4043 8/14/1996P724810/16/1996P702610/6/2004B4046 10/16/1996P724910/16/1996P702710/9/2004B4047 8/22/1996P72516/24/1996P70328/20/2004B4052 7/27/1996P725310/29/1996P70339/11/2004B4053 8/14/1996P72738/16/1996P70378/27/2004B4054 7/27/1996P730510/29/1996P70858/27/2004B4055 10/21/1996P70898/27/2004B4056 TABLE B.2: 65C27409-27 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 5/21/199617897/1/199617184/2/19961283 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 12 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 59 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT ### Page 60 TABLE B.2: 65C27409-27 Date of Manu- facture Serial Number Date of Manu- facture Serial Number Date of Manu- facture Serial Number 9/26/199617957/1/199617194/9/19961284 4/30/199618239/26/199617204/2/19961285 4/30/199618245/26/199617214/2/19961286 4/30/199618256/28/199617223/15/19961297 4/30/199618266/28/199617231/10/19961306 3/18/199618926/28/199617241/10/19961307 3/18/199618946/28/199617251/10/19961308 3/18/199618953/28/199617421/10/19961309 3/18/199618974/28/199717432/19/19961352 4/18/199619063/28/199617442/19/19961353 5/19/199619074/28/199717452/19/19961354 4/18/199619083/28/199617462/19/19961360 4/18/199619094/28/199717473/15/19961385 1/10/199619223/28/199617483/15/19961386 1/10/199619234/28/199717493/15/19961392 1/24/199619243/24/199617519/26/19961628 1/10/199619255/26/199617539/26/19961630 1/24/199619265/26/199617559/26/19961633 1/10/200619273/24/199617574/2/19961649 1/24/199619395/3/199617634/2/19961650 2/24/199619405/3/199617644/2/19961651 1/24/199619425/3/199617654/2/19961652 7/17/199619596/6/199617701/23/19961661 7/17/199619606/6/199617711/23/19961662 7/17/199619626/6/199617722/29/19961665 7/17/199619636/6/199617732/29/19961666 7/19/199619649/7/199617742/29/19961667 7/19/199619669/7/199617752/28/19961668 7/19/199619679/7/1996177610/4/19951669 Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 13 OF 22) BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218Revision 6 June 09, 2011 60 of 69 BOEING SERVICE BULLETIN 737-57A1218 ALERTALERT The text continues at https://openairdocs.org/service-documents/boeing/737-57a1218/file/7aed3ab028da.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.