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Commercial Airplanes 737 Service Bulletin ALERT Number: 737-53A1329 Original Issue: June 04, 2013 ATA System: 5330 SUBJECT: FUSELAGE - Skin - Forward Entry Doorway - Lower Corners - Inspection and Repair Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.
9E991ECCN:
BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2013 Boeing.
Unpublished Work. All Rights Reserved.
Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, KC-10, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing.
Original Issue: June 04, 2013 737-53A1329 1 of 29
6.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 2 of 29 BOEING SERVICE BULLETIN 737-53A1329
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Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected ........................................ 1 4 B. Concurrent Requirements ...................................... 1 4 C. Reason ................................................ 1 4 D. Description .............................................. 1 4 E. Compliance .............................................. 1 5 F. Approval ............................................... 1 7 G. Manpower .............................................. 1 7 H. Weight and Balance Changes .................................... 1 8 I. Electrical Load Data ......................................... 1 8 J. References .............................................. 1 8
1. Existing Data: ......................................... 1 8
2. Data Supplied with this Service Bulletin: ........................... 1 9
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 1 9 K. Publications Affected ........................................ 1 9 L. Interchangeability and Intermixability of Parts ........................... 1 9 M. Software Accomplishment Summary ................................ 1 9
2. MATERIAL INFORMATION ........................................ 2 1 A. Material - Price and Availability ................................... 2 1 B. Industry Support Information .................................... 2 1 C. Parts Necessary for Each Airplane ................................. 2 1
1. Kits/Parts ............................................ 2 1
2. Parts and Materials Supplied by the Operator ........................ 2 1
3. Parts Modified and Reidentified ................................ 2 1
4. Parts Removed and Not Replaced .............................. 2 1 D. Parts Necessary to Change Spares ................................. 2 1 E. Special Tooling - Price and Availability ............................... 2 1 F. Special Tooling Necessary to do this Service Bulletin ....................... 2 1
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 2 3 A. GENERAL INFORMATION ..................................... 2 3 B. WORK INSTRUCTIONS ....................................... 2 4 FIGURE 1: FUSELAGE - FORWARD ENTRY DOORWAY - SKIN ASSEMBLY AND BEAR STRAP AT THE LOWER CORNERS - INSPECTION [Group 2-3] ....................... 2 6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 3 of 29 BOEING SERVICE BULLETIN 737-53A1329
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Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 4 of 29 BOEING SERVICE BULLETIN 737-53A1329
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Commercial Airplanes 737 Service Bulletin ALERT SummaryNumber: 737-53A1329Original Issue: June 04, 2013 ATA System: 5330 SUBJECT: FUSELAGE - Skin - Forward Entry Doorway - Lower Corners - Inspection and Repair
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 gives instructions to inspect the lower corners of the forward entry doorway for cracking on airplanes that do not have an airstair door cutout. If the work in this service bulletin is not done, continued crack progression can result in possible rapid decompression.
Boeing has received five reports of cracking in the skin at the lower aft corner of the forward entry doorway on airplanes that do not have an airstair door cutout. The cracks ranged from 0.25 to 2.0 inches in length. The airplanes had accumulated between 34,813 and 73,083 total flight cycles. Cracks in the lower corners of the forward entry doorway are caused by fatigue loads in the skin and bear strap which are magnified by local stress concentrations due to the door cutout and edge margin effects at fastener locations near the corner radius.
Additionally, cracks can be initiated from impact damage due to high usage rate of the forward entry door.
Accomplishment of the work in this service bulletin will make sure that cracking at the lower corners of the forward entry doorway on airplanes that do not have an airstair door cutout is detected and a repair installed.
Boeing Service Bulletin 737-53-1083 gives instructions for the inspection, modification and repair of the lower corners of the forward entry doorway on airplanes that have an airstair door cutout.
Boeing Service Related Problem (SRP) 737-SRP-53-0381 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 737 FTD 53-11003 is related to this service bulletin.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedNoSpares Affected Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 5 of 29
ReferenceAffectedPlanning Data Paragraph 1.E., Compliance and Paragraph
1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesNoWeight and Balance Change Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/PartsNoKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator NoOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION Group 1:
Contact Boeing to get instructions for the inspections and repairs for this service bulletin 737-53A1329 Original Issue and do the work instructed by Boeing.
Group 2-3:
Remove the scuff plates at the lower corners of the forward entry doorway.
Group 2:
At the lower corners of the forward entry doorway, do an internal detailed inspection of the skin assembly and bear strap, an internal High Frequency Eddy Current (HFEC) inspection of the bear strap and an external detailed and HFEC inspection of the skin assembly for any crack. If any crack is found in the skin assembly or bear strap, contact Boeing for repair instructions and do the work instructed by Boeing. If no cracking is found, do the repeat inspections at the intervals given in Paragraph 1.E., Compliance.
Group 3:
At the lower corners of the forward entry doorway, do an internal detailed inspection of the skin assembly and bear strap, an internal HFEC inspection of the bear strap and an external detailed and HFEC inspection of the skin assembly for any crack. If any crack is found in the skin assembly or bear strap at the lower aft corner, install a repair. If any crack is found in the skin assembly or bear strap at the lower forward corner, contact Boeing for repair instructions and do the work instructed by Boeing. If no cracking is found, do the repeat inspections at the intervals given in Paragraph 1.E., Compliance.
EFFECTIVITY 737-200/-200C/-300/-400/-500 airplanes that do not have an airstair door cutout. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s).
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 6 of 29 BOEING SERVICE BULLETIN 737-53A1329
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COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.
FAA AD 2008-09-13 is related to this service bulletin.
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes, inspection and/or repair procedures given in this service bulletin.
MANPOWER Elapsed HoursTotal Task HoursAirplanes
5.005.00Group 2
5.005.00Group 3
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 7 of 29 BOEING SERVICE BULLETIN 737-53A1329
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BOEING SERVICE BULLETIN 737-53A1329
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FORWARD — ENTRY
DOORWAY
SCUFF PLATE ' SKIN
DO AN INTERNAL DETAILED INSPECT ON OF THE SKIN
ASSEMBLY AND BEAR STRAP, AN INTERNAL HIGH FREQUENCY
EDDY CURRENT (HFEC) INSPECT TION OF THE BEAR STRAP AND
AN EXTERNAL DETAILED AND HFEC INSPECTION OF THE SKIN ASSEMBLY FOR ANY CRACK. IF ANY CRACK IS FOUND IN THE SKIN ASSEMBLY OR BEAR STRAP, DO THE REPAIR. IF NO CRACKING IS FOUND, DO REPEAT INSPECTIONS. 2195345 Original Issue: June 04, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 737-53A1329 Work - See page 1 for detalls. 8 of 29
Commercial Airplanes 737 Service Bulletin ALERT Number: 737-53A1329 Original Issue: June 04, 2013 ATA System: 5330 SUBJECT: FUSELAGE - Skin - Forward Entry Doorway - Lower Corners - Inspection and Repair
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 D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplanes shown below.
DESCRIPTIONCONFIGURATIONGROUP 737-200C airplanes, line numbers 72 thru 286 that do not have an airstair door cutout.
-1 737-200/-200C airplanes, line numbers 294 thru 1453 that do not have an airstair door cutout.
-2 737-300/-400/-500 airplanes, line numbers 1001 thru 3132 that do not have an airstair door cutout.
-3 Airplane Models:
737-200, 737-200C, 737-300, 737-400, 737-500 GroupVariable Number 3PJ301 - PJ302 3PJ551 - PJ561 3PJ601 - PJ615 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 9 of 29
GroupVariable Number 3PJ811 2PK041 - PK046 2PK048 - PK050 2PK052 - PK053 2PK431 - PK433 2PK911 - PK938 2PK971 - PK974 2PL101 - PL113 2PL736 - PL747 2PL758 2PN401 - PN420 3PP001 - PP054 3PP102 - PP169 3PP181 - PP199 3PP231 - PP243 3PP281 - PP286 3PP301 - PP305 3PP401 - PP440 3PP471 - PP475 3PP631 - PP634 3PP671 - PP699 3PP701 - PP733 3PP771 - PP779 3PP861 - PP877 3PP961 - PP967 3PP981 - PP991 3PQ001 - PQ016 3PQ026 - PQ041 3PQ051 - PQ092 3PQ101 - PQ199 3PQ201 - PQ202 3PQ231 - PQ237 3PQ292 - PQ297 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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GroupVariable Number 3PQ299 3PQ301 - PQ307 3PQ331 - PQ332 3PQ341 - PQ348 3PQ431 - PQ438 3PQ451 3PQ454 3PQ471 3PQ479 - PQ481 3PQ486 - PQ487 3PQ491 - PQ493 3PQ771 - PQ772 3PQ791 - PQ793 3PQ801 - PQ805 3PQ931 - PQ935 3PR031 - PR034 3PR041 - PR045 3PR061 - PR072 3PR077 - PR080 3PR181 3PS643 - PS644 3PS666 - PS669 3PS691 - PS692 3PS701 - PS706 3PS751 - PS799 3PS901 - PS941 3PT001 - PT015 3PT021 - PT031 3PT101 - PT105 3PT186 - PT188 3PT301 - PT309 3PT331 - PT360 3PT381 - PT399 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 11 of 29 BOEING SERVICE BULLETIN 737-53A1329
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GroupVariable Number 3PT401 - PT438 3PT561 - PT565 3PT581 - PT586 3PT611 - PT621 3PT641 - PT644 3PT651 - PT656 3PT681 - PT685 3PT701 - PT703 3PT716 - PT717 3PT801 - PT834 3PT851 - PT854 3PT901 - PT930 3PT971 - PT973 3PT981 - PT985 3PU001 - PU025 3PV001 - PV055 3PV201 - PV209 3PV226 - PV229 3PV231 - PV237 3PV271 - PV272 3PV281 - PV287 3PV351 3PW062 - PW068 3PW201 - PW252 3PW401 - PW408 3PW411 - PW418 3PW421 - PW424 3PW431 - PW435 3PW441 - PW450 3PW461 - PW467 3PW511 - PW522 3PW524 - PW550 3PW561 - PW564 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: June 04, 2013 737-53A1329 12 of 29 BOEING SERVICE BULLETIN 737-53A1329