### 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.9E991 ECCN: 

## BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 1993 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 1 of 69 4.0BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 2 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**

BLANK PAGE**Table of Contents** Revision Transmittal Sheet............................................ 5 Summary...................................................... 7 1. PLANNING INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 A. Effectivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1. Airplanes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2. Spares Affected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 B. Concurrent Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 C. Reason. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 D. Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 F. Approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 G. Manpower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 H. Weight and Balance Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 I. Electrical Load Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 J. References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 1. Existing Data:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2. Data supplied with this Service Bulletin:. . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3. Installation Drawings Used in the Preparation of this Service Bulletin:. . . . . . . . . . . 29 K. Publications Affected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 L. Interchangeability and Intermixability of Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2. MATERIAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 B. Industry Support Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 C. Parts Necessary For Each Airplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 1. Kits/Parts:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2. Parts and Materials Supplied by the Operator:. . . . . . . . . . . . . . . . . . . . . . . . 31 3. Parts Modified and Reidentified:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4. Parts Removed and Not Replaced:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 D. Parts Necessary to Change Spares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 F. Special Tooling Necessary to do this Service Bulletin. . . . . . . . . . . . . . . . . . . . . . . 31 3. ACCOMPLISHMENT INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 A. GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 B. WORK INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 FIGURE 1: CARRIAGE SPINDLE INSPECTION AND REPAIR. . . . . . . . . . . . . . . . . . . . . 38 FIGURE 2: MINIMUM ALLOWABLE SPINDLE DIAMETER. . . . . . . . . . . . . . . . . . . . . . . 41 FIGURE 3: APPLICATION OF CARRIAGE TEMPORARY SERIAL NUMBERS. . . . . . . . . . . . . 43 FIGURE 4: APPLICATION OF CARRIAGE PERMANENT SERIAL NUMBERS. . . . . . . . . . . . . 45 Appendix A: EXISTING PARTS ACCOUNTABILITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Appendix B: CARRIAGE MANUFACTURED DATES. . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 3 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 4 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**

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### Commercial **Airplanes** 

# 737 Service Bulletin **ALERT Revision Transmittal Sheet**  **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 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 737-57A1218 Revision 6: June 09, 2011 5 of 69**REVISION HISTORY** July 22, 1993 Original Issue: August 15, 1996 Revision 1: September 30, 1999 Revision 2: July 25, 2002 Revision 3: June 19, 2007 Revision 4: February 09, 2009 Revision 5: Revision 6:

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 6 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**

### Commercial **Airplanes** 

# 737 Service Bulletin **ALERT Summary**  **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. **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 737-57A1218 Revision 6: June 09, 2011 7 of 69If 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 737-57A1218 Revision 6: June 09, 2011 8 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 9 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 10 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**

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### 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.
**DESCRIPTION CONFIGURATION**  **GROUP** 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 **Group Variable Number** 1 PA001 - PA022 1 PA099 1 PA231 - PA232 1 PC001 - PC005 1 PG001 - PG075

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 11 of 69**Group Variable Number** 1 PG199 1 PG201 - PG230 1 PG251 - PG255 1 PG271 - PG279 1 PG301 - PG314 1 PG331 - PG332 1 PG351 - PG356 1 PG375 1 PG401 - PG403 1 PG431 - PG442 1 PG471 - PG475 1 PG501 - PG505 1 PG571 - PG586 1 PG621 - PG630 1 PG651 - PG652 1 PG701 - PG705 1 PH001 1 PH011 - PH013 1 PH021 - PH024 1 PH701 - PH715 1 PH731 - PH732 1 PH741 - PH743 1 PJ001 - PJ009 1 PJ031 - PJ032 1 PJ071 - PJ072 1 PJ101 - PJ119 1 PJ201 - PJ219 2 PJ301 - PJ302 2 PJ551 - PJ561 2 PJ601 - PJ615 2 PJ811 2 PJ816 - PJ817 1 PK026 - PK029

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 12 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**1 PK041 - PK053 1 PK061 - PK070 1 PK081 - PK082 1 PK091 - PK099 1 PK101 - PK103 1 PK111 - PK120 1 PK141 - PK146 1 PK201 - PK204 1 PK211 - PK223 1 PK231 - PK241 1 PK251 - PK258 1 PK271 - PK274 1 PK281 - PK289 1 PK291 1 PK301 - PK318 1 PK341 1 PK351 - PK361 1 PK391 1 PK431 - PK433 1 PK451 - PK452 1 PK461 - PK469 1 PK495 1 PK501 - PK504 1 PK511 - PK515 1 PK519 1 PK521 - PK528 1 PK541 - PK565 1 PK581 1 PK591 - PK599 1 PK601 - PK617 1 PK621 - PK637 1 PK641 - PK642 1 PK661 - PK666

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 13 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**1 PK671 - PK681 1 PK691 - PK697 1 PK711 - PK716 1 PK731 - PK765 1 PK771 - PK779 1 PK801 - PK804 1 PK819 - PK827 1 PK830 1 PK861 - PK863 1 PK871 - PK874 1 PK881 - PK884 1 PK901 - PK938 1 PK971 - PK974 1 PL001 - PL028 1 PL061 1 PL081 1 PL101 - PL113 1 PL151 1 PL171 - PL172 1 PL201 - PL203 1 PL221 1 PL401 - PL417 1 PL421 1 PL441 1 PL451 - PL456 1 PL471 1 PL491 1 PL501 - PL506 1 PL551 - PL562 1 PL581 1 PL601 - PL603 1 PL611 1 PL621 - PL626

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 14 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**1 PL631 - PL632 1 PL711 - PL712 1 PL716 - PL747 1 PL756 1 PL758 1 PL761 - PL770 1 PL781 - PL788 1 PL793 1 PL801 - PL803 1 PM001 - PM0061 PM016 - PM0171 PM021 - PM0231 PM051 - PM0661 PM101 - PM1191 PM141 - PM1421 PM171 1 PM181 1 PM251 - PM2551 PM281 - PM2832 PM381 - PM3992 PM401 - PM4172 PM541 - PM5641 PN001 - PN002 1 PN021 - PN043 1 PN081 - PN086 1 PN101 - PN117 1 PN131 - PN163 1 PN401 - PN420 1 PN431 - PN433 1 PN451 - PN456 1 PN471 - PN474 1 PN481 1 PN491 - PN493

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 15 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**1 PN501 - PN502 1 PN511 - PN512 1 PN521 2 PP001 - PP054 2 PP101 - PP169 2 PP181 - PP199 2 PP201 - PP205 2 PP221 2 PP231 - PP243 2 PP281 - PP286 2 PP301 - PP305 2 PP351 - PP353 2 PP376 - PP384 2 PP391 - PP393 2 PP401 - PP440 2 PP471 - PP475 2 PP501 - PP522 2 PP631 - PP634 2 PP651 - PP652 2 PP671 - PP699 2 PP701 - PP733 2 PP771 - PP779 2 PP801 - PP808 2 PP821 - PP827 2 PP831 - PP848 2 PP851 - PP852 2 PP861 - PP877 2 PP891 - PP899 2 PP901 - PP936 2 PP946 - PP948 2 PP951 - PP952 2 PP961 - PP967 2 PP981 - PP991

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 16 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**2 PP993 2 PQ001 - PQ0162 PQ026 - PQ041 2 PQ051 - PQ092 2 PQ101 - PQ199 2 PQ201 - PQ202 2 PQ221 - PQ2372 PQ241 - PQ2432 PQ251 - PQ2672 PQ281 - PQ299 2 PQ301 - PQ3072 PQ331 - PQ332 2 PQ341 - PQ3482 PQ361 - PQ3732 PQ391 - PQ395 2 PQ401 - PQ4182 PQ421 2 PQ431 - PQ4382 PQ447 - PQ4482 PQ451 2 PQ454 2 PQ471 - PQ475 2 PQ479 - PQ481 2 PQ486 - PQ4872 PQ491 - PQ4932 PQ771 - PQ772 2 PQ791 - PQ7932 PQ801 - PQ805 2 PQ931 - PQ935 2 PQ951 2 PQ971 - PQ9972 PR001 - PR017 2 PR021 - PR034

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 17 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**2 PR041 - PR045 2 PR061 - PR072 2 PR077 - PR082 2 PR091 - PR092 2 PR096 2 PR101 2 PR121 - PR122 2 PR131 - PR132 2 PR141 - PR143 2 PR161 - PR172 2 PR181 2 PS601 - PS631 2 PS636 - PS638 2 PS641 - PS644 2 PS651 - PS657 2 PS666 - PS669 2 PS691 - PS692 2 PS701 - PS706 2 PS751 - PS799 2 PS811 2 PS836 - PS837 2 PS841 - PS846 2 PS851 - PS852 2 PS856 2 PS861 - PS863 2 PS866 - PS868 2 PS871 - PS874 2 PS896 - PS897 2 PS901 - PS941 2 PS956 - PS957 2 PS961 - PS963 2 PS971 - PS978 2 PT001 - PT015

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 18 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**2 PT021 - PT031 2 PT041 - PT064 2 PT101 - PT105 2 PT121 - PT138 2 PT146 - PT148 2 PT161 - PT170 2 PT181 - PT188 2 PT211 - PT220 2 PT295 2 PT301 - PT309 2 PT331 - PT360 2 PT381 - PT399 2 PT401 - PT438 2 PT501 - PT517 2 PT561 - PT565 2 PT581 - PT586 2 PT611 - PT621 2 PT641 - PT644 2 PT651 - PT656 2 PT671 - PT672 2 PT681 - PT685 2 PT701 - PT703 2 PT716 - PT717 2 PT721 - PT725 2 PT801 - PT834 2 PT851 - PT854 2 PT871 - PT886 2 PT901 - PT930 2 PT971 - PT973 2 PT981 - PT985 2 PT996 2 PU001 - PU025 2 PU301

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 19 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**2 PU311 - PU313 2 PV001 - PV055 2 PV201 - PV209 2 PV226 - PV229 2 PV231 - PV237 2 PV271 - PV272 2 PV281 - PV287 2 PV296 2 PV301 - PV302 2 PV351 2 PV356 - PV357 2 PW001 - PW0542 PW061 - PW0682 PW072 2 PW086 - PW0882 PW091 - PW0942 PW101 - PW1022 PW106 2 PW111 - PW1202 PW156 - PW1572 PW161 - PW1712 PW201 - PW2522 PW261 - PW2682 PW271 - PW2762 PW278 2 PW281 - PW2932 PW296 2 PW301 - PW3272 PW401 - PW4082 PW411 - PW4182 PW421 - PW4242 PW431 - PW4352 PW441 - PW450

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 20 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**2 PW461 - PW4672 PW501 - PW5042 PW511 - PW5222 PW524 - PW5502 PW556 - PW5572 PW561 - PW5642 PW571 - PW5762 PW591 - PW5962 PW611 - PW6222 PW631 - PW6372 PW661 - PW6622 PW681 - PW6832 PW701 - PW7022 PW711 - PW7172 PW741 - PW7422 PW761 2 PW771 2 PW831 2 PW851 - PW8561 PX071 1 PX701 1 PY001 - PY008 1 PY021 - PY022 1 PY031 1 PY036 - PY037 1 PY046 - PY048 1 PY051 - PY053 1 PY056 - PY057 1 PY101 - PY103 1 PY111 - PY113 1 PY131 - PY135 1 PY141 - PY143 1 PY151 - PY154

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 21 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group**  **Variable Number**1 PY156 - PY157 1 PY161 - PY162 1 PY166 1 PY191 1 PY201 1 PY221 - PY222 1 PY231 1 PY241 - PY244 1 PY270 - PY275 1 PY281 1 PY286 1 PY301 - PY304 1 PY321 - PY323 1 PY341 - PY346 1 PY361 - PY362 1 PY381 1 PY401 1 PY409 - PY411 1 PY421 - PY422 1 PY441 1 PY451 1 PY461 - PY463 1 PY591 - PY595 1 PY611 - PY612 1 PY621 1 PY631 1 PY651 1 PY671 - PY672 1 PY721 1 PY741 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 737-57A1218 Revision 6: June 09, 2011 22 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT 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 737-57A1218 Revision 6: June 09, 2011 23 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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 Number Carriage Assembly Part Number Carriage Location Group

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 24 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT 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 737-57A1218 Revision 6: June 09, 2011 25 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT 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 Zone**  **Model** 3-7, 4-7 737-100, 737-200, 737-200C **Group 2:**
**Affected Maintenance Zones Zone**  **Model** 307, 407 737-300, 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 737-57A1218 Revision 6: June 09, 2011 26 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Group 1:**  **737-100/-200 and -200C airplanes. Outboard Flap (Inboard Carriage WBL 254 and Outboard Carriage WBL 355)**  **Compliance Time Action**  **Condition** 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 undocumented carriageor a documented carriage having over40,000 total flight cycles. (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 documented 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 Time**  **Action Condition**  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 undocumented carriageor a documented carriage having over40,000 total flight cycles. (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 documented 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 737-57A1218 Revision 6: June 09, 2011 27 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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-Hours Number of**  **Persons Task** 

5 30 6 Open Access 1 2 2 Examine 16 32 2 Repair 0.25 0.25 1 Apply serial number 7 42 6 Close Access 1 3 3 Test 30.25 109.25 TOTAL 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 737-57A1218 Revision 6: June 09, 2011 28 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT 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:

Title Drawing NumberTrailing Edge Flap Installation and Rigging Procedures 65C16930 Carriage Sub Assy - Outboard Flap 65C27409 Flap Instl - Outboard, Wing T.E. (top kit) 65C34483 Mid/Aft Flap Assy - Outboard Flap 65C34946 Flap Assembly, Outboard Flap 65-46437 Carriage Assy, Outboard Flap, Wing 65-46481 Carriage Assy - Outboard Flap 65-47821 Carriage Assy - Outboard Flap 65-67159 Carriage Assy Outbd Flap Wing (rework drawing) 65-79949

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 29 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT K. Publications Affected**  1. Publications: **Chapter-Section Publication**  57-00 and 57-50 737 Corrosion Prevention Manual 57-53-36 Component Maintenance Manual 57-53-35 Overhaul 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 737-57A1218 Revision 6: June 09, 2011 30 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT 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 737-57A1218 Revision 6: June 09, 2011 31 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6: June 09, 2011 32 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**

BLANK PAGE**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 737-57A1218 Revision 6: June 09, 2011 33 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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 737-57A1218 Revision 6: June 09, 2011 34 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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 737-57A1218 Revision 6: June 09, 2011 35 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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 737-57A1218 Revision 6: June 09, 2011 36 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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 737-57A1218 Revision 6: June 09, 2011 37 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT FIGURE 1: CARRIAGE SPINDLE INSPECTION AND REPAIR**  **(SHEET 1 OF 3)**

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 38 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 39 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT NOTES**  **PROCEDURE NAME**  **TASK STEP**  AMM 27-51-72 or Trailing Edge Flap Remove 1 AMM 27-51-34 AMM 27-51-81 or Midflap Carriage Remove 2 AMM 27-51-44 (a) Cress Sleeve Remove 3 Note: When overhauling the spindle, all finishes, coatings and plating must be removed from the spindle. (a) SOPM 20-30-02 Finish Remove 4 (a) SOPM 20-30-02 Coating (a) SOPM 20-30-02 Plating Look for corrosion, pitting and cracks along the entire length of the spindle. Detailed Inspection Carriage Spindle Inspect 5

Inspect for cracks refer to SOPM 20-20-01. If cracksare found discard the carriage.Magnetic Particle Inspection

If damage is beyond the repair limits, the carriage must be discarded. OHM 57-53-35 or CMM 57-53-36 Carriage Spindle Overhaul / 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 737-57A1218 Revision 6 June 09, 2011 40 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 41 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT MORE DATA**  **QTY IDENTIFICATION**  **NAME TASK**  **STEP** (a) 1

- Spindle Diameter "A" Measure 1 (a) 1

- Spindle Diameter "B" Measure 2 (a) 1

- Spindle Diameter "C" Measure 3 (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 Diameter Inboard/Outboard**  **Effective Part Number Airplane Model**  **"C" "B"**  **"A"** 0.8371 1.6668 1.6810 Inboard and Out- board 65-47821-6/-8/-10/-12/-16 737-100/200

0.8371 1.6590 1.6810 Inboard and Out- board 65-47821-20/-22/-24/-26/-28 737-100/200

0.8898 1.8792 1.8792 Inboard and Out- board 65-67159-1/-5/-7 737-100/200HGW

0.8898 1.8730 1.8792 Inboard and Out- board 65-67159-9 737-100/200HGW

0.9046 1.7199 1.7858 Outboard 65C27409-5/-9/-13/-17 737-300/400/500 0.8939 1.8151 1.8800 Inboard 65C27409-6/-10/-18/-21/-23 737-300/400/500 0.9046 1.7174 1.8111 Outboard 65C27409-25 737-300/400/500 0.8827 1.8151 1.9409 Inboard 65C27409-27 737-300/400/500

**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 737-57A1218 Revision 6 June 09, 2011 42 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 43 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT MORE DATA**  **QTY IDENTIFICATION**  **NAME TASK**  **STEP** (a) 4

- Outboard Flap Carriage Mark 1 (b)

- - Serial Number Track 2 (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 737-57A1218 Revision 6 June 09, 2011 44 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 45 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT MORE DATA**  **QTY IDENTIFICATION**  **NAME TASK**  **STEP** (a) (b) 4

- Outboard Flap Carriage Mark 1 (c)

- - Serial Number Track 2 (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 737-57A1218 Revision 6 June 09, 2011 46 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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 737-57A1218 Revision 6 June 09, 2011 47 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**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 737-57A1218 Revision 6 June 09, 2011 48 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT Appendix B: CARRIAGE MANUFACTURED DATES**  **(SHEET 2 OF 22)**

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 49 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  1/10/1996 1928 5/5/1996 1759 3/1/1996 1279 1/10/1996 1929 5/5/1996 1760 3/1/1996 1280 1/10/1996 1931 5/5/1996 1761 3/1/1996 1281 1/10/1996 1932 5/10/1996 1766 3/1/1996 1282 10/1/1995 1933 5/10/1996 1767 3/1/1996 1362 10/1/1995 1934 5/10/1996 1768 3/1/1996 1364 10/1/1995 1935 5/10/1996 1769 3/1/1996 1371 10/1/1995 1936 8/22/1996 1777 3/1/1996 1374 3/18/1996 1944 5/30/1996 1782 3/18/1996 1570 2/19/1996 1948 5/30/1996 1783 3/18/1996 1573 2/19/1996 1953 5/30/1996 1784 7/1/1996 1577 2/19/1996 1958 5/30/1996 1785 3/12/1996 1593 4/17/1996 1961 4/17/1996 1827 3/12/1996 1595 6/20/1996 1965 4/17/1996 1828 6/4/1996 1597 6/20/1996 1970 4/17/1996 1829 3/12/1996 1605 6/20/1996 1973 5/16/1996 1831 3/5/1996 1627 7/16/1996 1977 5/16/1996 1832 5/16/1996 1629 5/3/1996 1981 5/16/1996 1833 3/5/1996 1632 8/21/1996 1982 5/20/1996 1834 3/5/1996 1634 9/2/1996 1983 5/20/1996 1835 3/11/1996 1645 5/3/1996 1984 5/20/1996 1836 3/11/1996 1646 9/10/1996 1985 5/20/1996 1837 3/11/1996 1647 5/3/1996 1986 1/24/1996 1898 3/11/1996 1648 6/20/1996 1987 2/20/1996 1899 6/26/1996 1710 9/10/1996 1988 2/20/1996 1900 6/26/1996 1711 8/21/1996 1989 3/13/1996 1901 6/26/1996 1712 8/22/1996 1990 2/20/1996 1902 6/26/1996 1713 8/22/1996 1991 2/20/1996 1903 6/26/1996 1714 8/21/1996 1992 1/24/1996 1904 6/26/1996 1715

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 3 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 50 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  8/22/1996 1993 1/24/1996 1905 6/26/1996 1716 8/22/1996 1994 1/24/1996 1914 6/26/1996 1717 8/25/1996 1995 1/24/1996 1915 4/15/1996 1750 8/25/1996 1996 2/6/1996 1917 4/15/1996 1752 8/21/1996 1997 2/6/1996 1919 4/15/1996 1754 9/7/1998 1998 1/24/1996 1920 4/15/1996 1756 8/21/1996 1999 1/24/1996 1921 5/5/1996 1758 5/15/1997 2381 10/26/1996 2086 8/25/1996 2000 5/15/1997 2382 10/26/1996 2087 8/22/1996 2003 5/15/1997 2383 10/26/1996 2088 8/7/1996 2006 6/12/1997 2384 11/13/1996 2130 8/22/1996 2007 6/12/1997 2385 11/13/1996 2133 8/22/1996 2008 6/12/1997 2386 11/13/1996 2134 8/7/1996 2009 6/12/1997 2387 11/13/1996 2135 8/7/1996 2010 6/12/1997 2397 11/26/1996 2136 8/7/1996 2011 6/12/1997 2398 12/3/1996 2137 9/30/1996 2016 6/12/1997 2400 11/26/1996 2139 9/30/1996 2017 6/12/1997 2401 11/13/1996 2140 9/30/1996 2018 6/12/1997 2402 11/13/1996 2142 9/30/1996 2019 8/20/1997 2403 11/13/1996 2143 8/22/1996 2021 6/12/1997 2404 11/13/1996 2145 10/23/1996 2022 5/30/1997 2405 11/24/1996 2146 10/31/1996 2024 5/30/1997 2406 11/24/1996 2150 10/23/1996 2025 5/30/1997 2407 11/24/1996 2151 11/12/1996 2038 5/30/1997 2408 11/24/1996 2152 10/23/1996 2039 5/30/1997 2431 12/3/1996 2154 10/23/1996 2041 5/30/1997 2433 11/2/1996 2155 10/23/1996 2045 5/30/1997 2435 11/2/1996 2156 10/23/1996 2053 5/30/1997 2436 11/2/1996 2157 10/23/1996 2054

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 4 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 51 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  6/12/1997 2446 11/2/1996 2159 10/23/1996 2060 6/12/1997 2448 12/3/1996 2167 10/23/1996 2061 6/12/1997 2450 11/26/1996 2172 6/27/1996 2068 6/12/1997 2452 12/3/1996 2175 6/27/1996 2069 6/27/1997 2465 11/26/1996 2177 6/27/1996 2070 6/12/1997 2524 11/20/1996 2181 6/27/1996 2071 7/27/1997 2542 11/20/1996 2185 10/23/1996 2075 8/8/1997 2554 11/20/1996 2188 10/23/1996 2077 6/27/1997 2555 11/20/1996 2190 10/23/1996 2078 6/27/1997 2556 12/18/1996 2219 10/23/1996 2079 8/4/1997 2561 12/18/1996 2220 10/23/1996 2080 8/4/1997 2562 12/18/1996 2221 8/19/1996 2082 8/4/1997 2563 12/18/1996 2225 8/19/1996 2083 8/20/1997 2564 8/8/1997 2300 8/19/1996 2084 9/24/1997 2573 5/15/1997 2380 10/26/1996 2085 8/25/1997 2716 7/15/1997 2631 11/1/1997 2574 8/25/1997 2717 7/15/1997 2632 11/1/1997 2575 10/8/1997 2718 8/4/1997 2641 11/1/1997 2576 9/8/1997 2723 8/4/1997 2642 7/4/1997 2581 9/8/1997 2724 8/4/1997 2643 7/1/1997 2582 9/8/1997 2725 8/4/1997 2644 7/4/1997 2583 9/8/1997 2726 7/15/1997 2648 7/1/1997 2584 12/2/1997 2727 7/15/1997 2650 7/4/1997 2585 12/2/1997 2728 7/15/1997 2651 6/27/1997 2586 9/28/1997 2729 7/15/1997 2652 7/4/1997 2587 12/2/1997 2730 9/5/1997 2661 7/1/1997 2588 9/28/1997 2736 9/5/1997 2662 7/1/1997 2593 9/28/1997 2738 9/5/1997 2663 7/1/1997 2594 9/28/1997 2740 9/5/1997 2664 7/1/1997 2595

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 5 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 52 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  9/28/1997 2742 8/20/1997 2666 7/1/1997 2596 11/11/1997 2743 8/20/1997 2667 7/1/1997 2597 11/11/1997 2745 8/20/1997 2668 7/1/1997 2598 11/11/1997 2746 9/15/1997 2673 7/1/1997 2599 11/11/1997 2747 9/15/1997 2674 7/1/1997 2600 10/9/1997 2756 9/15/1997 2675 7/8/1997 2605 10/9/1997 2760 9/15/1997 2676 7/8/1997 2606 11/7/2004 2762 8/5/1997 2682 7/8/1997 2607 10/9/1997 2763 8/5/1997 2683 7/8/1997 2608 10/9/1997 2766 8/5/1997 2684 7/29/1997 2609 11/7/2004 2767 8/5/1997 2685 7/29/1997 2610 11/7/2004 2768 9/4/1997 2686 7/29/1997 2611 11/7/2004 2769 9/4/1997 2687 7/29/1997 2612 11/11/1997 2776 9/4/1997 2689 8/7/1997 2621 11/11/1997 2777 9/4/1997 2690 8/7/1997 2622 11/11/1997 2778 8/20/1997 2699 8/7/1997 2623 11/11/1997 2780 8/20/1997 2701 8/7/1997 2624 11/25/1997 2786 8/20/1997 2702 7/15/1997 2625 11/25/1997 2787 8/20/1997 2707 7/15/1997 2626 11/25/1997 2788 8/20/1997 2708 7/15/1997 2627 11/25/1997 2789 8/20/1997 2709 7/15/1997 2628 11/24/1997 2793 8/20/1997 2710 7/15/1997 2629 12/10/1997 2794 8/25/1997 2715 7/15/1997 2630 2/25/1998 2970 12/18/1997 2880 12/10/1997 2795 3/2/1998 2971 1/20/1998 2882 12/10/1997 2796 3/2/1998 2972 11/20/1997 2894 12/10/1997 2797 3/2/1998 2973 1/20/1998 2915 10/10/1997 2798 3/2/1998 2974 1/20/1998 2916 10/10/1997 2799 3/1/1998 2975 1/20/1998 2917 10/10/1997 2800

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 6 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 53 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  3/1/1998 2976 1/20/1998 2918 10/10/1997 2801 3/1/1998 2977 1/3/1998 2923 2/12/1998 2812 3/1/1998 2978 1/3/1998 2924 2/12/1998 2813 6/26/1998 2995 1/7/1998 2925 2/12/1998 2814 7/28/1998 3002 1/3/1998 2926 3/1/1998 2815 7/28/1998 3003 1/9/1998 2931 2/10/1998 2820 7/28/1998 3004 1/9/1998 2932 2/10/1998 2821 7/28/1998 3005 1/9/1998 2933 2/10/1998 2822 9/14/1998 3024 1/9/1998 2934 2/10/1998 2823 9/14/1998 3025 1/8/1998 2935 6/11/1998 2827 9/14/1998 3026 1/8/1998 2936 2/16/1998 2828 9/14/1998 3027 1/8/1998 2938 2/16/1998 2829 9/2/1998 3028 1/8/1998 2939 2/16/1998 2830 9/2/1998 3029 1/23/1998 2940 2/16/1998 2831 9/2/1998 3030 1/23/1998 2942 1/27/1998 2832 9/2/1998 3031 1/23/1998 2943 1/27/1998 2833 9/5/1998 3044 1/23/1998 2944 1/27/1998 2834 9/5/1998 3045 2/1/1998 2947 1/27/1998 2835 9/5/1998 3046 1/8/1998 2954 2/24/1998 2852 9/5/1998 3047 1/8/1998 2955 2/24/1998 2853 8/26/1998 3052 1/8/1998 2956 2/24/1998 2854 9/2/1998 3053 1/20/1998 2958 2/24/1998 2855 8/26/1998 3054 1/20/1998 2960 1/29/1998 2865 9/2/1998 3055 2/25/1998 2961 1/29/1998 2866 8/26/1998 3056 1/20/1998 2962 1/29/1998 2867 9/2/1998 3057 1/20/1998 2964 1/29/1998 2868 9/2/1998 3059 2/25/1998 2965 1/25/1999 2869 3/28/1998 3062 1/20/1998 2966 1/4/1998 2875 3/28/1998 3063 1/20/1998 2967 1/5/1998 2876

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 7 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 54 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  3/28/1998 3064 1/20/1998 2968 1/3/1998 2877 3/28/1998 3065 2/25/1998 2969 1/3/1998 2878 3/16/1999 B3251 6/23/1998 3183 4/13/1998 3087 3/21/1999 B3252 6/23/1998 3184 4/13/1998 3089 6/3/1999 B3268 6/13/1998 3185 4/13/1998 3090 6/2/1999 B3269 6/26/1998 3190 4/13/1998 3091 6/2/1999 B3270 6/26/1998 3191 3/16/1998 3104 6/14/1999 B3271 6/26/1998 3192 3/16/1998 3105 4/22/1999 B3273 2/10/2004 B2740 3/16/1998 3106 5/12/1999 B3274 9/11/2004 B2896 3/16/1998 3107 5/12/1999 B3277 10/21/1998 B3194 4/21/2004 3108 3/29/1999 B3281 10/21/1998 B3195 4/21/2004 3109 2/26/1999 B3288 11/30/1998 B3196 4/21/2004 3110 6/14/1999 B3299 10/21/1998 B3197 6/9/1998 3116 6/14/1999 B3300 11/12/1998 B3198 4/15/1998 3117 6/16/1999 B3305 11/12/1998 B3199 4/15/1998 3118 6/16/1999 B3306 11/12/1998 B3200 6/16/1998 3119 6/14/1999 B3307 11/12/1998 B3201 7/9/1998 3124 4/22/1999 B3313 2/26/1999 B3206 7/15/1998 3125 5/12/1999 B3314 2/26/1999 B3209 7/9/1998 3126 5/12/1999 B3315 2/23/1999 B3210 7/15/1998 3127 12/21/2000 B3417 2/3/1999 B3211 8/3/1998 3136 12/19/2000 B3418 2/23/1999 B3212 7/9/1998 3137 12/21/2000 B3419 2/3/1999 B3213 8/23/1998 3138 5/8/2001 B3447 1/20/1999 B3214 7/9/1998 3139 4/30/2001 B3449 2/3/1999 B3215 5/11/1998 3144 5/8/2001 B3450 1/20/1999 B3216 5/11/1998 3145 4/16/2001 B3453 2/3/1999 B3218 5/11/1998 3146 4/5/2002 B3456 11/5/1998 B3227 5/11/1998 3147

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 8 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 55 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  4/16/2001 B3458 11/5/1998 B3228 8/12/1998 3148 5/5/2001 B3459 11/5/1998 B3230 4/21/1998 3156 12/19/2000 B3461 11/5/1998 B3231 4/21/1998 3157 8/24/2001 B3465 1/20/1999 B3232 4/21/1998 3158 10/25/2001 B3466 2/10/1999 B3236 4/21/1998 3159 8/21/2001 B3469 1/20/1999 B3238 5/11/1998 3178 8/18/2001 B3471 1/25/1999 B3240 7/9/1998 3179 7/12/2001 B3472 4/22/1999 B3241 5/11/1998 3180 10/25/2001 B3477 3/29/1999 B3247 5/11/1998 3181 11/27/2001 B3479 3/16/1999 B3250 6/23/1998 3182 2/25/2004 B3627 4/11/2003 B3557 11/15/2003 B3482 11/12/2003 B3635 5/20/2003 B3560 11/15/2001 B3483 1/23/2004 B3636 5/20/2003 B3561 11/6/2001 B3485 11/11/2003 B3637 4/23/2003 B3563 10/1/2002 B3489 11/21/2003 B3638 1/29/2003 B3565 10/1/2002 B3490 10/16/2003 B3644 10/10/2003 B3566 10/30/2002 B3491 10/16/2003 B3645 5/20/2003 B3567 10/28/2002 B3492 10/6/2003 B3646 11/2/2003 B3569 1/10/2003 B3496 10/14/2003 B3647 11/12/2003 B3570 11/27/2001 B3497 1/23/2004 B3654 11/12/2003 B3571 11/27/2001 B3498 1/28/2004 B3655 11/12/2003 B3573 2/7/2002 B3504 4/2/2004 B3656 11/12/2003 B3574 4/1/2002 B3505 1/21/2004 B3657 10/13/2003 B3579 21/6/2002 B3507 1/16/2004 B3662 10/13/2003 B3581 4/2/2002 B3508 1/6/2004 B3663 10/3/2003 B3582 5/30/2002 B3509 1/16/2004 B3664 10/4/2003 B3583 5/30/2002 B3510 1/23/2004 B3665 10/3/2003 B3584 4/27/2002 B3511 11/23/2003 B3666 1/6/2004 B3590 7/26/2002 B3512 1/23/2004 B3667 1/6/2004 B3591 4/27/2002 B3513

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 9 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 56 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  1/23/2004 B3668 1/6/2004 B3592 1/30/2003 B3516 1/23/2004 B3669 1/6/2004 B3593 10/11/2003 B3521 12/20/2003 B3670 11/26/2003 B3598 6/11/2003 B3523 11/22/2003 B3672 11/26/2003 B3599 6/11/2003 B3525 1/31/2004 B3674 1/16/2004 B3600 6/30/2003 B3528 1/16/2004 B3675 12/11/2003 B3601 6/30/2003 B3529 5/15/2004 B3696 1/6/2004 B3602 8/25/2003 B3530 3/6/2004 B3697 1/23/2004 B3603 5/1/2003 B3534 3/10/2004 B3698 1/6/2004 B3604 4/5/2003 B3536 3/17/2004 B3699 1/23/2004 B3605 4/5/2003 B3537 2/27/2004 B3700 1/6/2004 B3610 4/12/2003 B3539 2/27/2004 B3701 1/6/2004 B3611 7/2/2003 B3541 4/13/2004 B3703 1/6/2004 B3612 7/2/2003 B3542 2/25/2004 B3704 1/16/2004 B3613 6/4/2003 B3543 4/5/2004 B3705 11/19/2003 B3619 7/2/2003 B3544 2/1/2004 B3706 11/19/2003 B3621 7/2/2003 B3550 2/10/2004 B3707 11/19/2003 B3623 6/30/2003 B3552 2/20/2004 B3708 11/19/2003 B3626 7/8/2003 B3555 8/14/2004 B3863 3/17/2004 B3812 3/18/2004 B3709 6/6/2004 B3864 3/29/2004 B3813 2/15/2004 B3710 5/13/2004 B3865 5/24/2004 B3817 2/15/2004 B3711 6/6/2004 B3866 6/21/2004 B3818 3/18/2004 B3712 5/13/2004 B3867 3/29/2004 B3819 2/29/2004 B3737 5/12/2004 B3868 5/12/2004 B3820 2/25/2004 B3738 4/30/2004 B3869 4/28/2004 B3821 2/15/2004 B3739 6/21/2004 B3880 3/17/2004 B3822 2/27/2004 B3741 6/22/2004 B3881 3/10/2004 B3823 2/6/2004 B3742 10/6/2004 B3889 3/29/2004 B3824 2/6/2004 B3743 10/5/2004 B3890 5/13/2004 B3825 2/27/2004 B3744

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 10 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 57 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  10/9/2004 B3891 3/18/2004 B3826 2/6/2004 B3746 9/15/2004 B3892 9/11/2004 B3827 4/12/2004 B3753 10/6/2004 B3893 3/18/2004 B3828 3/10/2004 B3754 9/11/2004 B3894 4/8/2004 B3829 3/17/2004 B3755 10/6/2004 B3895 4/2/2004 B3830 2/29/2004 B3756 8/14/2004 B3898 5/12/2004 B3831 2/27/2004 B3758 10/18/2004 B3899 5/15/2004 B3832 2/25/2004 B3759 9/9/2004 B3900 6/6/2004 B3833 2/25/2004 B3760 10/6/2004 B3902 5/3/2004 B3834 6/6/2004 B3771 10/6/2004 B3903 5/15/2004 B3835 5/24/2004 B3774 10/6/2004 B3904 3/29/2004 B3840 4/2/2004 B3778 7/25/2004 B3906 5/12/2004 B3841 5/27/2004 B3779 8/20/2004 B3907 6/14/2004 B3842 3/10/2004 B3792 8/29/2004 B3908 5/13/2004 B3843 3/10/2004 B3793 8/20/2004 B3909 5/13/2004 B3844 3/17/2004 B3795 6/14/2004 B3911 4/2/2004 B3845 3/20/2004 B3796 8/21/2004 B3916 5/24/2004 B3846 5/13/2004 B3797 8/15/2004 B3920 5/15/2004 B3853 3/20/2004 B3798 8/5/2004 B3932 3/18/2004 B3855 3/16/2004 B3800 6/26/2004 B3935 5/15/2004 B3856 6/10/2004 B3802 6/26/2004 B3937 6/21/2004 B3857 5/24/2004 B3803 10/6/2004 B3944 5/13/2004 B3858 4/2/2004 B3804 10/3/2004 B3954 5/15/2004 B3859 4/28/2004 B3805 6/21/2004 B4004 5/15/2004 B3860 5/17/2004 B3806 6/21/2004 B4005 4/2/2004 B3861 5/27/2004 B3808 6/22/2004 B4006 6/14/2004 B3862 8/14/2004 B3811 8/16/1996 P7092 10/6/2004 B4057 6/21/2004 B4008 7/27/1996 P7097 8/14/2004 B4058 6/21/2004 B4020 6/13/1996 P7112 8/21/2004 B4059 6/26/2004 B4021

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 11 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 58 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.1: 65C27409-25** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  6/20/1996 P7116 10/18/2004 B4077 8/5/2004 B4023 6/24/1996 P7117 10/6/2004 B4078 8/22/2004 B4024 6/20/1996 P7118 10/9/2004 B4079 8/20/2004 B4025 10/16/1996 P7119 10/6/2004 B4080 10/6/2004 B4026 7/27/1996 P7144 10/17/2004 B4081 6/14/2004 B4027 6/20/1996 P7146 10/18/2004 B4082 8/14/2004 B4028 8/16/1996 P7155 10/9/2004 B4083 6/26/2004 B4029 8/14/1996 P7157 10/18/2004 B4084 8/27/2004 B4030 7/17/1996 P7160 8/27/2004 B4085 8/21/2004 B4032 10/29/1996 P7175 8/21/2004 B4086 8/29/2004 B4033 10/16/1996 P7184 10/18/2004 B4096 7/25/2004 B4034 10/16/1996 P7185 10/18/2004 B4097 6/21/2004 B4035 8/16/1996 P7234 10/18/2004 B4099 10/6/2004 B4040 6/20/1996 P7242 6/13/1996 P6990 10/6/2004 B4041 10/16/1996 P7245 6/24/1996 P7020 10/18/2004 B4042 10/16/1996 P7247 10/29/1996 P7025 10/6/2004 B4043 8/14/1996 P7248 10/16/1996 P7026 10/6/2004 B4046 10/16/1996 P7249 10/16/1996 P7027 10/9/2004 B4047 8/22/1996 P7251 6/24/1996 P7032 8/20/2004 B4052 7/27/1996 P7253 10/29/1996 P7033 9/11/2004 B4053 8/14/1996 P7273 8/16/1996 P7037 8/27/2004 B4054 7/27/1996 P7305 10/29/1996 P7085 8/27/2004 B4055 10/21/1996 P7089 8/27/2004 B4056

**TABLE B.2: 65C27409-27**
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  5/21/1996 1789 7/1/1996 1718 4/2/1996 1283

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 12 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 59 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  9/26/1996 1795 7/1/1996 1719 4/9/1996 1284 4/30/1996 1823 9/26/1996 1720 4/2/1996 1285 4/30/1996 1824 5/26/1996 1721 4/2/1996 1286 4/30/1996 1825 6/28/1996 1722 3/15/1996 1297 4/30/1996 1826 6/28/1996 1723 1/10/1996 1306 3/18/1996 1892 6/28/1996 1724 1/10/1996 1307 3/18/1996 1894 6/28/1996 1725 1/10/1996 1308 3/18/1996 1895 3/28/1996 1742 1/10/1996 1309 3/18/1996 1897 4/28/1997 1743 2/19/1996 1352 4/18/1996 1906 3/28/1996 1744 2/19/1996 1353 5/19/1996 1907 4/28/1997 1745 2/19/1996 1354 4/18/1996 1908 3/28/1996 1746 2/19/1996 1360 4/18/1996 1909 4/28/1997 1747 3/15/1996 1385 1/10/1996 1922 3/28/1996 1748 3/15/1996 1386 1/10/1996 1923 4/28/1997 1749 3/15/1996 1392 1/24/1996 1924 3/24/1996 1751 9/26/1996 1628 1/10/1996 1925 5/26/1996 1753 9/26/1996 1630 1/24/1996 1926 5/26/1996 1755 9/26/1996 1633 1/10/2006 1927 3/24/1996 1757 4/2/1996 1649 1/24/1996 1939 5/3/1996 1763 4/2/1996 1650 2/24/1996 1940 5/3/1996 1764 4/2/1996 1651 1/24/1996 1942 5/3/1996 1765 4/2/1996 1652 7/17/1996 1959 6/6/1996 1770 1/23/1996 1661 7/17/1996 1960 6/6/1996 1771 1/23/1996 1662 7/17/1996 1962 6/6/1996 1772 2/29/1996 1665 7/17/1996 1963 6/6/1996 1773 2/29/1996 1666 7/19/1996 1964 9/7/1996 1774 2/29/1996 1667 7/19/1996 1966 9/7/1996 1775 2/28/1996 1668 7/19/1996 1967 9/7/1996 1776 10/4/1995 1669

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 13 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 60 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  7/19/1996 1968 8/22/1996 1777 2/19/1996 1670 6/28/1996 1969 8/14/1996 1778 10/4/1995 1671 6/28/1996 1971 8/14/1996 1779 10/4/1995 1672 6/28/1996 1972 8/14/1996 1780 1/10/1996 1673 6/28/1996 1974 8/14/1996 1781 1/10/1996 1674 6/6/1996 1975 5/21/1996 1787 1/10/1996 1675 6/6/1996 1979 5/21/1996 1788 1/10/1996 1676 11/14/1996 2153 10/23/1996 2061 6/6/1996 1980 11/14/1996 2158 7/1/1996 2062 7/19/1996 2001 11/25/1996 2160 7/1/1996 2063 7/19/1996 2002 11/14/1996 2161 10/21/1996 2064 8/22/1996 2003 11/25/1996 2162 7/1/1996 2065 7/19/1996 2004 11/14/1996 2163 10/21/1996 2066 7/19/1996 2005 11/25/1996 2164 10/21/1996 2067 8/7/1996 2006 11/25/1996 2165 10/21/1996 2072 8/22/1996 2007 11/26/1996 2173 11/14/1996 2073 8/22/1996 2008 11/26/1996 2176 10/23/1996 2075 8/7/1996 2009 11/26/1996 2178 10/23/1996 2077 8/7/1996 2010 12/17/1996 2204 10/23/1996 2078 8/7/1996 2011 12/17/1996 2207 10/23/1996 2079 8/7/1996 2012 12/17/1996 2210 10/23/1996 2080 8/7/1996 2013 12/18/1996 2232 9/30/1996 2081 8/7/1996 2014 12/18/1996 2233 8/19/1996 2082 8/7/1996 2015 12/18/1996 2236 8/19/1996 2083 8/22/1996 2021 12/18/1996 2238 8/19/1996 2084 12/17/1996 2023 5/21/1997 2388 10/11/1996 2114 12/17/1996 2030 5/21/1997 2390 10/11/1996 2115 12/17/1996 2042 5/21/1997 2392 10/11/1996 2116 12/17/1996 2043 5/21/1997 2394 10/11/1996 2117 7/8/1996 2044

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 14 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 61 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  6/23/1997 2409 9/26/1996 2119 10/10/1996 2046 6/23/1997 2410 9/26/1996 2120 7/16/1996 2047 6/23/1997 2411 9/26/1996 2121 10/10/1996 2048 6/23/1997 2412 11/27/1996 2122 10/10/1996 2049 5/21/1997 2421 11/27/1996 2123 10/10/1996 2050 5/21/1997 2423 11/27/1996 2128 7/8/1996 2051 5/21/1997 2425 11/27/1996 2129 7/8/1996 2052 5/21/1997 2427 11/24/1996 2131 10/23/1996 2053 6/6/1997 2429 11/20/1996 2132 10/23/1996 2054 6/5/1997 2430 11/24/1996 2138 7/8/1996 2055 6/6/1997 2432 11/20/1996 2141 7/8/1996 2056 6/6/1997 2434 10/31/1996 2144 7/8/1996 2057 6/6/1997 2437 10/31/1996 2147 7/8/1996 2058 6/6/1997 2438 10/31/1996 2148 7/1/1996 2059 6/6/1997 2439 10/31/1996 2149 10/23/1996 2060 8/19/1997 2659 11/11/1997 2570 9/21/1997 2440 8/19/1997 2660 11/11/1997 2571 6/5/1997 2441 9/4/1997 2669 12/18/1997 2572 6/5/1997 2442 9/4/1997 2670 9/11/1997 2577 6/5/1997 2443 9/4/1997 2671 9/11/1997 2578 6/5/1997 2444 9/4/1997 2672 9/11/1997 2579 6/23/1997 2445 8/15/1997 2678 9/11/1997 2580 6/23/1997 2447 8/15/1997 2679 6/28/1997 2589 6/23/1997 2449 8/15/1997 2680 6/28/1997 2590 6/23/1997 2451 8/15/1997 2681 6/28/1997 2591 7/9/1997 2453 8/29/1997 2691 6/28/1997 2592 6/24/1997 2454 10/8/1997 2692 7/9/1997 2613 7/9/1997 2455 8/29/1997 2693 7/9/1997 2614 6/24/1997 2456 8/29/1997 2694 7/9/1997 2615 7/9/1997 2457

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 15 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 62 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  8/15/1997 2695 7/9/1997 2616 6/24/1997 2458 8/15/1997 2696 7/17/1997 2617 7/9/1997 2459 8/15/1997 2697 7/17/1997 2618 6/24/1997 2460 8/15/1997 2698 7/17/1997 2619 6/25/1997 2461 8/15/1997 2703 7/17/1997 2620 6/25/1997 2462 8/15/1997 2704 7/25/1997 2633 6/25/1997 2463 8/15/1997 2706 7/25/1997 2634 6/25/1997 2464 8/29/1997 2711 7/25/1997 2635 5/15/1997 2479 8/29/1997 2712 7/25/1997 2636 5/15/1997 2484 8/29/1997 2713 7/26/1997 2637 12/18/1997 2498 9/17/1997 2719 9/8/1997 2638 6/6/1997 2511 10/23/1997 2720 7/26/1997 2639 6/6/1997 2515 10/23/1997 2721 9/8/1997 2640 6/6/1997 2543 10/23/1997 2722 7/23/1997 2645 6/6/1997 2549 9/17/1997 2731 7/23/1997 2646 6/25/1997 2550 9/17/1997 2732 7/23/1997 2647 6/25/1997 2551 9/17/1997 2733 7/23/1997 2649 6/25/1997 2552 9/17/1997 2734 10/8/1997 2653 6/25/1997 2553 10/6/1997 2735 9/21/1997 2654 7/21/1997 2557 10/6/1997 2737 9/21/1997 2655 7/21/1997 2558 10/6/1997 2739 9/21/1997 2656 7/21/1997 2559 10/6/1997 2741 8/19/1997 2657 7/21/1997 2560 9/11/1997 2744 8/19/1997 2658 12/18/1997 2569 1/7/1998 2904 2/25/1998 2842 10/23/1997 2748 1/7/1998 2905 2/25/1998 2843 10/23/1997 2749 1/7/1998 2906 2/12/1998 2845 10/23/1997 2750 12/18/1997 2907 2/12/1998 2846 9/11/1997 2751 12/18/1997 2908 2/12/1998 2847 9/11/1997 2753 1/3/1998 2909 2/12/1998 2848 10/23/1997 2754

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 16 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 63 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  12/18/1997 2910 2/20/1998 2849 10/9/1997 2755 1/15/1998 2911 2/20/1998 2850 10/9/1997 2757 1/15/1998 2912 2/20/1998 2851 9/11/1997 2758 1/15/1998 2913 2/20/1998 2856 10/9/1997 2761 1/15/1998 2914 1/22/1998 2857 10/9/1997 2765 12/22/1997 2919 1/22/1998 2858 11/1/1997 2771 12/22/1997 2920 2/18/1998 2861 11/24/1997 2773 12/22/1997 2921 2/18/1998 2862 11/1/1997 2774 12/22/1997 2922 2/18/1998 2863 11/1/1997 2775 1/12/1998 2927 2/18/1998 2864 1/7/1998 2802 1/12/1998 2928 1/22/1998 2869 1/7/1998 2803 1/12/1998 2929 12/11/1997 2870 1/7/1998 2804 1/12/1998 2930 12/19/1997 2871 2/12/1998 2805 2/24/1998 2937 2/1/1998 2872 3/18/1998 2806 2/24/1998 2946 12/19/1997 2879 2/12/1998 2808 2/1/1998 2947 12/19/1997 2881 6/7/1998 2810 2/1/1998 2948 12/11/1997 2883 2/12/1998 2811 2/1/1998 2949 3/6/1998 2884 2/2/1998 2816 1/12/1998 2950 12/11/1997 2885 2/2/1998 2817 1/12/1998 2951 12/11/1997 2886 2/2/1998 2818 1/12/1998 2952 12/9/1997 2887 2/2/1998 2819 1/12/1998 2953 12/9/1997 2888 1/27/1998 2832 2/24/1998 2959 12/9/1997 2889 1/27/1998 2833 2/24/1998 2987 12/9/1997 2890 1/27/1998 2834 2/24/1998 2988 11/25/1997 2891 1/27/1998 2835 2/24/1998 2989 11/25/1997 2892 1/23/1998 2836 2/24/1998 2990 11/25/1997 2893 1/23/1998 2837 3/6/1998 2991 11/26/1997 2895 1/23/1998 2838 3/6/1998 2992 11/26/1997 2896 6/7/1998 2839

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 17 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 64 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  3/6/1998 2993 2/24/1998 2902 1/23/1998 2840 7/1/1998 2997 1/7/1998 2903 2/25/1998 2841 1/18/1999 B3221 3/23/1998 3102 7/1/1998 2998 1/18/1999 B3222 3/23/1998 3103 7/1/1998 2999 3/12/1999 B3224 4/15/1998 3120 7/1/1998 3000 4/26/1999 B3233 4/15/1998 3121 8/4/1998 3006 3/9/1999 B3234 4/15/1998 3122 8/4/1998 3008 2/20/1999 B3235 4/15/1998 3123 8/4/1998 3009 3/9/1999 B3237 7/2/1998 3128 8/21/1998 3010 2/20/1999 B3239 7/2/1998 3130 9/29/1998 3016 4/28/1999 B3244 7/2/1998 3131 9/11/1998 3017 4/20/1999 B3245 8/21/1998 3132 9/11/1998 3018 4/28/1999 B3246 8/23/1998 3133 9/29/1998 3019 3/18/1999 B3248 7/28/1998 3134 10/28/1998 3020 3/18/1999 B3249 7/28/1998 3135 10/28/1998 3021 4/5/1999 B3254 9/7/1998 3140 10/28/1998 3022 7/1/1999 B3256 7/10/1998 3141 11/30/1998 3023 7/1/1999 B3257 5/28/1998 3152 8/28/1998 3032 7/1/1999 B3258 5/28/1998 3153 8/28/1998 3033 6/17/1999 B3265 5/28/1998 3154 8/28/1998 3034 7/12/1999 B3267 5/28/1998 3155 8/28/1998 3035 6/3/1999 B3268 4/21/1998 3166 8/23/1998 3036 6/2/1999 B3269 4/21/1998 3167 8/3/1998 3040 6/2/1999 B3270 4/21/1998 3168 8/3/1998 3041 6/14/1999 B3271 4/21/1998 3169 8/3/1998 3042 4/20/1999 B3272 11/17/1998 3170 8/3/1998 3043 4/27/1999 B3275 11/17/1998 3171 9/7/1998 3048 4/28/1999 B3276 6/6/1998 3172 9/7/1998 3049 4/27/1999 B3278 11/17/1998 3172 8/29/1998 3050

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 18 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 65 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  4/20/1999 B3279 11/17/1998 3173 9/7/1998 3051 3/26/1999 B3280 5/6/1998 3174 3/18/1998 3060 3/16/1999 B3282 6/6/1998 3175 3/18/1998 3061 4/13/1999 B3284 5/6/1998 3176 3/21/1998 3066 3/26/1999 B3289 5/20/1998 3187 3/21/1998 3067 4/28/1999 B3291 11/30/1998 3193 6/7/1998 3068 6/19/1999 B3304 4/5/1999 B3207 3/21/1998 3069 6/16/1999 B3305 3/16/1999 B3208 6/7/1998 3076 6/16/1999 B3306 1/18/1999 B3219 6/7/1998 3100 6/14/1999 B3307 1/18/1999 B3220 6/7/1998 3101 12/16/2003 B3617 10/17/2003 B3531 7/28/1999 B3312 1/6/2004 B3618 4/5/2003 B3532 4/26/1999 B3316 10/14/2003 B3620 4/8/2003 B3533 10/12/2003 B3385 10/29/2003 B3622 4/8/2003 B3535 12/18/2000 B3412 10/29/2003 B3625 7/8/2003 B3540 12/18/2000 B3413 3/12/2004 B3628 5/20/2003 B3545 12/18/2000 B3414 11/12/2003 B3629 6/11/2003 B3547 11/21/2000 B3415 10/17/2003 B3631 9/17/2003 B3548 12/18/2000 B3416 12/16/2003 B3632 7/16/2003 B3549 4/20/2001 B3445 10/17/2003 B3633 7/16/2003 B3551 6/20/2001 B3446 10/13/2003 B3639 6/24/2003 B3553 6/19/2001 B3448 10/18/2003 B3640 9/4/2003 B3554 4/20/2001 B3451 10/9/2003 B3641 5/20/2003 B3556 4/20/2001 B3455 10/27/2003 B3643 6/11/2003 B3558 8/19/2001 B3467 1/17/2004 B3658 5/1/2003 B3559 8/19/2001 B3470 1/31/2004 B3659 7/8/2003 B3562 1/12/2002 B3473 1/31/2004 B3660 11/2/2003 B3575 11/7/2001 B3475 1/29/2004 B3661 12/21/2003 B3576 10/30/2001 B3476 1/31/2004 B3676 11/2/2003 B3577 11/7/2001 B3480

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 19 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 66 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  1/16/2004 B3677 10/9/2003 B3578 1/12/2002 B3481 1/16/2004 B3679 10/9/2003 B3580 11/6/2001 B3484 1/6/2004 B3680 10/17/2003 B3585 11/28/2001 B3486 2/7/2004 B3681 12/16/2003 B3586 1/12/2002 B3487 1/23/2004 B3682 2/29/2004 B3587 9/20/2001 B3488 6/22/2004 B3684 1/14/2004 B3588 1/13/2003 B3493 1/23/2004 B3686 12/19/2003 B3589 1/10/2003 B3495 1/16/2004 B3687 10/29/2003 B3594 4/1/2002 B3499 1/31/2004 B3690 12/23/2003 B3595 1/12/2002 B3500 1/23/2004 B3692 1/16/2004 B3596 3/13/2002 B3502 4/2/2004 B3713 1/28/2004 B3597 4/2/2002 B3503 2/29/2004 B3714 1/29/2004 B3606 1/31/2003 B3517 2/25/2004 B3715 1/16/2004 B3607 1/31/2003 B3518 2/25/2004 B3716 1/29/2004 B3608 1/31/2003 B3519 2/25/2004 B3717 12/16/2003 B3609 6/18/2003 B3522 2/25/2004 B3718 1/6/2004 B3614 8/21/2003 B3524 2/8/2004 B3719 12/17/2003 B3615 7/16/2003 B3526 2/25/2004 B3720 12/16/2003 B3616 7/16/2003 B3527 7/25/2004 B3877 4/28/2004 B3776 2/20/2004 B3721 6/26/2004 B3878 4/28/2004 B3777 1/31/2004 B3722 4/28/2004 B3879 3/29/2004 B3780 1/31/2004 B3723 7/24/2004 B3882 3/29/2004 B3781 1/17/2004 B3724 7/24/2004 B3883 5/20/2004 B3782 3/29/2004 B3725 6/11/2004 B3884 3/2/2004 B3783 5/3/2004 B3726 6/2/2004 B3885 2/29/2004 B3784 1/17/2004 B3727 6/21/2004 B3886 2/29/2004 B3785 2/27/2004 B3728 6/11/2004 B3887 3/26/2004 B3786 4/2/2004 B3729 6/21/2004 B3888 5/20/2004 B3787 3/29/2004 B3730 9/14/2004 B3901 5/20/2004 B3788 4/2/2004 B3731

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 20 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 67 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  9/14/2004 B3905 2/29/2004 B3789 9/11/2004 B3732 8/21/2004 B3910 6/22/2004 B3790 4/28/2004 B3733 6/23/2004 B3912 7/24/2004 B3799 8/3/2004 B3734 8/21/2004 B3913 9/7/2004 B3807 3/29/2004 B3735 7/30/2004 B3914 4/28/2004 B3809 3/10/2004 B3736 8/14/2004 B3915 8/21/2004 B3810 2/29/2004 B3745 9/11/2004 B3917 3/29/2004 B3814 1/19/2004 B3746 7/31/2004 B3918 6/8/2004 B3815 2/19/2004 B3747 8/27/2004 B3919 4/30/2004 B3816 3/10/2004 B3748 8/5/2004 B3921 6/11/2004 B3836 2/19/2004 B3749 7/31/2004 B3922 5/7/2004 B3837 2/25/2004 B3750 8/14/2004 B3923 4/28/2004 B3838 2/29/2004 B3751 8/14/2004 B3924 6/22/2004 B3839 2/20/2004 B3752 9/11/2004 B3925 6/11/2004 B3847 5/20/2004 B3761 10/9/2004 B3926 6/10/2004 B3848 4/13/2004 B3762 9/14/2004 B3927 6/10/2004 B3849 3/29/2004 B3763 7/31/2004 B3928 6/2/2004 B3850 4/28/2004 B3764 9/14/2004 B3929 5/15/2004 B3851 3/29/2004 B3765 6/22/2004 B3930 4/30/2004 B3852 5/3/2004 B3766 6/21/2004 B3931 4/28/2004 B3870 3/29/2004 B3767 7/25/2004 B3933 6/30/2004 B3871 4/28/2004 B3768 6/2/2004 B3934 4/28/2004 B3872 4/28/2004 B3769 9/7/2004 B3936 5/3/2004 B3873 6/10/2004 B3770 10/9/2004 B3938 4/30/2004 B3874 5/25/2004 B3772 9/22/2004 B3939 6/26/2004 B3875 7/30/2004 B3773 10/12/2004 B3941 5/20/2004 B3876 8/21/2004 B3775 9/7/2004 B4091 9/14/2004 B4013 10/12/2004 B3942 9/7/2004 B4092 8/29/2004 B4015 10/12/2004 B3945 10/12/2004 B4093 9/11/2004 B4016 10/12/2004 B3946

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 21 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 68 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT TABLE B.2: 65C27409-27** 
**Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number** **Date of Manu facture**  **Serial Number**  10/12/2004 B4094 9/15/2004 B4017 10/12/2004 B3962 10/12/2004 B4098 8/14/2004 B4019 10/12/2004 B3969 10/12/2004 B4100 6/22/2004 B4031 8/28/2004 B3994 11/3/2004 B4128 8/27/2004 B4036 9/22/2004 B3995 9/13/2004 B4037 10/9/2004 B3996 9/11/2004 B4038 10/9/2004 B3997 9/11/2004 B4039 9/13/2004 B3998 9/11/2004 B4044 10/9/2004 B3999 10/9/2004 B4045 9/22/2004 B4000 9/11/2004 B4048 9/13/2004 B4001 9/15/2004 B4049 7/30/2004 B4002 9/11/2004 B4050 5/27/2004 B4003 9/13/2004 B4051 6/21/2004 B4007 8/21/2004 B4087 7/25/2004 B4009 9/11/2004 B4088 9/14/2004 B4010 8/29/2004 B4089 9/14/2004 B4011 8/27/2004 B4090 9/11/2004 B4012

**Appendix B: CARRIAGE MANUFACTURED DATES (SHEET 22 OF 22)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: July 22, 1993 737-57A1218 Revision 6 June 09, 2011 69 of 69 **BOEING SERVICE BULLETIN 737-57A1218 ALERT**  **ALERT**