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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 Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 730-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.
9E991ECCN:
BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 1993 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.
This document includes proprietary information owned by The Boeing Company and/or one or more third parties.
Treatment of the document and the information it contains is governed by contract with Boeing. For more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, KC-10, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and the Boeing livery are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 1 of 69
4.0
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 2 of 69 BOEING SERVICE BULLETIN 737-57A1218
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Table of Contents
Revision Transmittal Sheet5
Summary7
1. PLANNING INFORMATION ........................................ 1 1 A. Effectivity ............................................... 1 1
1. Airplanes ............................................ 1 1
2. Spares Affected ........................................ 2 2 B. Concurrent Requirements ...................................... 2 3 C. Reason ................................................ 2 3 D. Description .............................................. 2 4 E. Compliance .............................................. 2 6 F. Approval ............................................... 2 7 G. Manpower .............................................. 2 8 H. Weight and Balance Changes .................................... 2 8 I. Electrical Load Data ......................................... 2 8 J. References .............................................. 2 9
1. Existing Data: ......................................... 2 9
2. Data supplied with this Service Bulletin: ........................... 2 9
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 9 K. Publications Affected ........................................ 3 0 L. Interchangeability and Intermixability of Parts ........................... 3 0
2. MATERIAL INFORMATION ........................................ 3 1 A. Material - Price and Availability ................................... 3 1 B. Industry Support Information .................................... 3 1 C. Parts Necessary For Each Airplane ................................. 3 1
1. Kits/Parts: ........................................... 3 1
2. Parts and Materials Supplied by the Operator: ........................ 3 1
3. Parts Modified and Reidentified: ............................... 3 1
4. Parts Removed and Not Replaced: .............................. 3 1 D. Parts Necessary to Change Spares ................................. 3 1 E. Special Tooling - Price and Availability ............................... 3 1 F. Special Tooling Necessary to do this Service Bulletin ....................... 3 1
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 3 3 A. GENERAL INFORMATION ..................................... 3 3 B. WORK INSTRUCTIONS ....................................... 3 4 FIGURE 1: CARRIAGE SPINDLE INSPECTION AND REPAIR ..................... 3 8 FIGURE 2: MINIMUM ALLOWABLE SPINDLE DIAMETER ....................... 4 1 FIGURE 3: APPLICATION OF CARRIAGE TEMPORARY SERIAL NUMBERS ............. 4 3 FIGURE 4: APPLICATION OF CARRIAGE PERMANENT SERIAL NUMBERS ............. 4 5 Appendix A: EXISTING PARTS ACCOUNTABILITY ............................ 4 7 Appendix B: CARRIAGE MANUFACTURED DATES ............................ 4 8
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 3 of 69 BOEING SERVICE BULLETIN 737-57A1218
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BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 4 of 69 BOEING SERVICE BULLETIN 737-57A1218
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Commercial Airplanes 737 Service Bulletin ALERT Revision Transmittal SheetNumber: 737-57A1218Original Issue: July 22, 1993 Revision 6: June 09, 2011 ATA System: 5752 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle Repair and Life Limiting This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Airworthiness Directive AD 2010-15-08 is related to this service bulletin.
No more work is necessary on the airplane(s) changed in accordance with the Revision 5 of this service bulletin.
REASON FOR REVISION This revision is sent to change the compliance time from 48,000 flight cycles to 40,000 flight cycles in both Group 1 and Group 2 tables, and to correct the typo in the Figure 2 graphic.
These sections were changed:
1. In Section 1.E. Compliance, the compliance time was reduced from 48,000 flight cycles to 40,000 flight cycles in both Group 1 and Group 2 tables, added reference to AD 2010-15-08
2. In Section 1.F. Approval, added the alternative method of compliance paragraph for AD 2010-15-08.
3. In Section 1.K. Publication Affected , added the Damage tolerance statement.
4. In Section 3.A. General Information, updated the general notes.
5. In Section 3.B. Work Instruction, updated the instructions to use the current refer to & in accordance with terminology.
6. In Figure 2, the -27 was moved from the Outboard spindle view to the Inboard spindle view to agree with the tables in Figure 2 and the Description Section.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location of important changes.
Pages with no vertical lines have no important changes.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 5 of 69
REVISION HISTORY July 22, 1993Original Issue:
August 15, 1996Revision 1:
September 30, 1999Revision 2:
July 25, 2002Revision 3:
June 19, 2007Revision 4:
February 09, 2009Revision 5:
Revision 6:
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 6 of 69 BOEING SERVICE BULLETIN 737-57A1218
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Commercial Airplanes 737 Service Bulletin ALERT SummaryNumber: 737-57A1218Original Issue: July 22, 1993 Revision 6: June 09, 2011 ATA System: 5752 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle Repair and Life Limiting
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
CONCURRENT REQUIREMENTS None
BACKGROUND This service bulletin provides instructions for removal, inspection and overhaul/rework of the outboard midflap carriage spindle. This is to make sure that any corrosion is found and repaired before fractures occur. This service bulletin also provides instructions to add a serial number to the carriage for tracking purposes. Outboard midflap carriages are made life limited and must be tracked.
Fractures that resulted from stress corrosion and pitting have been reported along the length of the spindle and spindle diameter. Several operators have reported thirty five outboard carriage spindle fractures that resulted from corrosion since 1969. The most critical fractures occur at the forward end of the spindle through the large diameter. Of the thirty five reported fractures due to corrosion, three have occurred at this critical location. These fractures occurred on 737 -100 through -500 airplanes.
Several operators have also reported seven carriage spindle fractures that resulted from fatigue, eight of which occurred at the critical location. These fractures occurred on 737-200 and -300 airplanes.
There also have been many additional reports of corrosion on the outboard flap carriage spindles. One fractured carriage spindle can be compensated for by the pilot with inputs to the aileron and/or rudder. However fractures of both the inboard and outboard spindles (at the critical location) on a given outboard flap may preclude continued safe flight and landing of the airplane.
Boeing Service Related Problem (SRP) 737-57-0147 is related to this service bulletin.
ACTION (PRR 35005-260RS) Remove the outboard flaps, and disassemble the outboard flap carriages. Look for corrosion, pitting and/or cracks. Refer to the 737-100/-200/-200C Overhaul Manual (OHM) 57-53-35 or the 737-300/-400/-500 Component Maintenance Manual (CMM) 57-53-36 for repair, overhaul and assembly instructions. If the damage is beyond the repair limits for diameters shown in this service bulletin, then the carriage must be discarded.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 7 of 69
If a carriage with a documented history has exceeded its life limitations detailed in this service bulletin, or if the carriage history cannot be documented, discard and replace the carriage with a life limited, serialized part within the time shown in Paragraph 1.E., Compliance. If a carriage is within the limits of its documented life, serialize it or use the existing serial number and begin tracking the carriage within the time shown in Paragraph 1.E., Compliance.
EFFECTIVITY 737-100/ -200/ -200C/ -300/ -400/ and -500 Airplanes line numbers 1 through 3132.
COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directive AD 2010-15-08 is related to this service bulletin.
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection and repair procedures given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 8 of 69 BOEING SERVICE BULLETIN 737-57A1218
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BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 9 of 69 BOEING SERVICE BULLETIN 737-57A1218
ALERTALERT
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 10 of 69 BOEING SERVICE BULLETIN 737-57A1218
ALERTALERT
BLANK PAGE
Commercial Airplanes 737 Service Bulletin ALERT Number: 737-57A1218 Original Issue: July 22, 1993 Revision 6: June 09, 2011 ATA System: 5752 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Carriage Spindle Repair and Life Limiting
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index Document D6-19567, Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplanes shown below.
DESCRIPTIONCONFIGURATIONGROUP 737-100, -200 and -200C airplanes, line numbers 1 through 1585.-1 737-300, -400 and -500 airplanes, line numbers 1001 through 3132.-2 Airplane Models:
737-100, 737-200, 737-200C, 737-300, 737-400, 737-500 GroupVariable Number 1PA001 - PA022 1PA099 1PA231 - PA232 1PC001 - PC005 1PG001 - PG075
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Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 11 of 69
GroupVariable Number 1PG199 1PG201 - PG230 1PG251 - PG255 1PG271 - PG279 1PG301 - PG314 1PG331 - PG332 1PG351 - PG356 1PG375 1PG401 - PG403 1PG431 - PG442 1PG471 - PG475 1PG501 - PG505 1PG571 - PG586 1PG621 - PG630 1PG651 - PG652 1PG701 - PG705 1PH001 1PH011 - PH013 1PH021 - PH024 1PH701 - PH715 1PH731 - PH732 1PH741 - PH743 1PJ001 - PJ009 1PJ031 - PJ032 1PJ071 - PJ072 1PJ101 - PJ119 1PJ201 - PJ219 2PJ301 - PJ302 2PJ551 - PJ561 2PJ601 - PJ615 2PJ811 2PJ816 - PJ817 1PK026 - PK029
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 22, 1993 737-57A1218Revision 6: June 09, 2011 12 of 69 BOEING SERVICE BULLETIN 737-57A1218