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Commercial Airplanes 737 Service Bulletin ALERT Number: 737-57A1323 Original Issue: December 05, 2014 ATA System: 5711 SUBJECT: WINGS - Front Spar - Wing Front Spar Lower Chord Between WBL 114 and WBL 183 and Wing Skin Common to the Nacelle Outboard Side Load Fitting Fasteners at WBL
198.6 - Inspection 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 © 2014 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Unpublished Work.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: December 05, 2014 737-57A1323 1 of 102
4.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 05, 2014 737-57A1323 2 of 102 BOEING SERVICE BULLETIN 737-57A1323
ALERTALERT
BLANK PAGE
Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected ........................................ 2 1 B. Concurrent Requirements ...................................... 2 1 C. Reason ................................................ 2 1 D. Description .............................................. 2 1 E. Compliance .............................................. 2 3 F. Approval ............................................... 2 7 G. Manpower .............................................. 2 7 H. Weight and Balance Changes .................................... 2 9 I. Electrical Load Data ......................................... 2 9 J. References .............................................. 2 9
1. Existing Data: ......................................... 2 9
2. Data Supplied with this Service Bulletin: ........................... 3 0
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 3 0 K. Publications Affected ........................................ 3 0 L. Interchangeability and Intermixability of Parts ........................... 3 0 M. Software Accomplishment Summary ................................ 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 2
4. Parts Removed and Not Replaced .............................. 3 2 D. Parts Necessary to Change Spares ................................. 3 3 E. Special Tooling - Price and Availability ............................... 3 3 F. Special Tooling Necessary to do this Service Bulletin ....................... 3 3
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 3 5 A. GENERAL INFORMATION ..................................... 3 5 B. WORK INSTRUCTIONS ....................................... 3 6 FIGURE 1: LEFT WING FRONT SPAR LOWER CHORD AND INSPAR SKIN BETWEEN (WBL) 114 AND (WBL) 183 - DETAILED INSPECTION (DI) [Group 2] .................... 4 5 FIGURE 2: RIGHT WING FRONT SPAR LOWER CHORD AND INSPAR SKIN BETWEEN (WBL) 114 AND (WBL) 183 - DETAILED INSPECTION (DI) [Group 2] .................... 4 9 FIGURE 3: LEFT WING FRONT SPAR LOWER CHORD AND INSPAR SKIN BETWEEN (WBL) 114 AND (WBL) 183 - DETAILED INSPECTION (DI) [Group 3] .................... 5 3 FIGURE 4: RIGHT WING FRONT SPAR LOWER CHORD AND INSPAR SKIN BETWEEN (WBL) 114 AND (WBL) 183 - DETAILED INSPECTION (DI) [Group 3] .................... 5 7 FIGURE 5: LEFT WING AT (WBL) 198.6 - HIGH FREQUENCY EDDY CURRENT (HFEC) OPEN HOLE INSPECTION [Group 3] .................................... 6 1 FIGURE 6: RIGHT WING AT (WBL) 198.6 - HIGH FREQUENCY EDDY CURRENT (HFEC) OPEN HOLE INSPECTION [Group 3] .................................... 6 4 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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FIGURE 7: LEFT WING AT (WBL) 198.6 - HIGH FREQUENCY EDDY CURRENT (HFEC) MOUSE HOLE INSPECTION [Group 3] .................................... 6 7 FIGURE 8: RIGHT WING AT (WBL) 198.6 - HIGH FREQUENCY EDDY CURRENT (HFEC) MOUSE HOLE INSPECTION [Group 3] .................................... 7 0 FIGURE 9: LEFT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - FASTENER INSTALLATION [Group 3] ................................... 7 3 FIGURE 10: RIGHT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - FASTENER INSTALLATION [Group 3] ................................... 7 6 FIGURE 11: LEFT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - OVERSIZED FASTENER INSTALLATION [Group 3] ................................... 7 9 FIGURE 12: RIGHT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - OVERSIZED FASTENER INSTALLATION [Group 3] ............................ 8 2 FIGURE 13: LEFT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - OVERSIZED FASTENER INSTALLATION [Group 3] ................................... 8 5 FIGURE 14: RIGHT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - OVERSIZED FASTENER INSTALLATION [Group 3] ............................ 8 8 FIGURE 15: LEFT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - OVERSIZED FASTENER INSTALLATION [Group 3] ................................... 9 1 FIGURE 16: RIGHT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - OVERSIZED FASTENER INSTALLATION [Group 3] ............................ 9 4 FIGURE 17: LEFT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - OVERSIZED FASTENER INSTALLATION [Group 3] ................................... 9 7 FIGURE 18: RIGHT WING OUTBOARD SIDE LOAD NACELLE SUPPORT FITTING - OVERSIZED FASTENER INSTALLATION [Group 3] ........................... 1 0 0 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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Commercial Airplanes 737 Service Bulletin ALERT SummaryNumber: 737-57A1323Original Issue: December 05, 2014 ATA System: 5711 SUBJECT: WINGS - Front Spar - Wing Front Spar Lower Chord Between WBL 114 and WBL 183 and Wing Skin Common to the Nacelle Outboard Side Load Fitting Fasteners at WBL
198.6 - Inspection
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 An operator reported that a crack was found during an inspection performed in accordance with Supplemental Structural Inspection Document (SSID) Item W-19A on the forward leg of the left front spar lower chord at WBL
177. As a result, the front spar lower chord was removed, repaired and reinstalled. Upon additional inspection of the repaired spar chord installation, cracks were also discovered on the lower wing skin at three fastener holes common to the nacelle outboard side load fitting at WBL 198.6. This event occurred at 57,617 Flight Cycles and is the first reported incident of this type. Metallurgical analysis of the chord determined that cracks initiated at fastener holes and were propagated by operating load fatigue. The analysis found no anomalies which could have contributed to the cracking. A Detailed Inspection/High Frequency Eddy Current (DI/HFEC) inspection of the affected areas will determine if crack(s) exist. If not corrected, fatigue cracking of the forward leg of the left front spar lower chord and lower wing skin common to the nacelle outboard side load fitting could adversely affect the structural integrity of the wing.
Boeing Service Related Problem 737-SRP-57-0253 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 737 FTD 57-12002 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 Paragraph 1.E., Compliance and Paragraph
1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesNoWeight and Balance Change Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 05, 2014 737-57A1323 5 of 102
ReferenceAffectedPlanning Data Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedNoPublications 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 YesOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin YesSpecial Tooling Required ACTION Refer to Paragraph 1.D., Description.
EFFECTIVITY All 737-100, -200, -200C, -300, -400, -500 Airplanes. Refer to Paragraph 1.A.1., Airplanes for the list of affected airplanes.
COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection and/or 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.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 05, 2014 737-57A1323 6 of 102 BOEING SERVICE BULLETIN 737-57A1323
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BOEING SERVICE BULLETIN 737-57A1323
ALERT ALERT WBL 114 WBL 183
FRONT SPAR LOWER CHORD WBL
198.6
NACELLE OUTBOARD SIDE
LOAD FITTING
WING FRONT SPAR LOWER CHORD BETWEEN WBL 114 AND WBL 183, AND WING SKIN COMMON FASTENERS AT WBL 198.6 TO THE NACELLE OUTBOARD SIDE LOAD FITTING 2300454
- INSPECTION Original Issue: December 05, 2014 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 737-57A1323 Work - See page 1 for details. 7 of 102
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 05, 2014 737-57A1323 8 of 102 BOEING SERVICE BULLETIN 737-57A1323
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BLANK PAGE
Commercial Airplanes 737 Service Bulletin ALERT Number: 737-57A1323 Original Issue: December 05, 2014 ATA System: 5711 SUBJECT: WINGS - Front Spar - Wing Front Spar Lower Chord Between WBL 114 and WBL 183 and Wing Skin Common to the Nacelle Outboard Side Load Fitting Fasteners at WBL
198.6 - Inspection
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 airplane(s) shown below.
DESCRIPTIONCONFIGURATIONGROUP 737-100/200/200C Airplanes Line Numbers 1 - 291.-1 737-200/200C Airplanes.-2 737-300/400/500 Airplanes.-3 Airplane Models:
737-100, 737-200, 737-200C, 737-300, 737-400, 737-500 GroupVariable Number 1PA001 - PA022 1PA099 1PA231 - PA232 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 05, 2014 737-57A1323 9 of 102
GroupVariable Number 1PC001 - PC005 1PG001 - PG075 1PG199 1PG201 - PG230 1PG251 - PG255 1PG271 - PG279 1PG301 - PG314 1PG331 - PG332 1PG351 - PG356 1PG375 1PG401 - PG403 1PG431 - PG442 1PG471 - PG475 1PG501 - PG505 1PG571 - PG583 2PG584 - PG586 1PG621 - PG630 1PG651 - PG652 1PG701 - PG705 2PH001 2PH011 - PH013 2PH021 - PH024 1PH701 - PH715 1PH731 - PH732 1PH741 - PH742 2PH743 1PJ001 - PJ002 2PJ003 - PJ009 1PJ031 - PJ032 1PJ071 - PJ072 1PJ101 - PJ104 2PJ105 - PJ119 2PJ201 - PJ219 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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GroupVariable Number 3PJ301 - PJ302 3PJ551 - PJ561 3PJ601 - PJ615 3PJ811 3PJ816 - PJ817 2PK026 - PK029 2PK041 - PK053 2PK061 - PK070 2PK081 - PK082 2PK091 - PK099 2PK101 - PK103 2PK111 - PK120 2PK141 - PK146 2PK201 - PK204 2PK211 - PK223 2PK231 - PK241 2PK251 - PK258 2PK271 - PK274 2PK281 - PK289 2PK291 2PK301 - PK318 2PK341 2PK351 - PK361 2PK391 2PK431 - PK433 2PK451 - PK452 2PK461 - PK469 2PK495 2PK501 - PK504 2PK511 - PK515 2PK519 2PK521 - PK528 2PK541 - PK565 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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GroupVariable Number 2PK581 2PK591 - PK599 2PK601 - PK617 2PK621 - PK637 2PK641 - PK642 2PK661 - PK666 2PK671 - PK681 2PK691 - PK697 2PK711 - PK716 2PK731 - PK765 2PK771 - PK779 2PK801 - PK804 2PK819 - PK827 2PK830 2PK861 - PK863 2PK871 - PK874 2PK881 - PK884 2PK901 - PK938 2PK971 - PK974 2PL001 - PL028 2PL061 2PL081 2PL101 - PL113 2PL151 2PL171 - PL172 2PL201 - PL203 2PL221 2PL401 - PL417 2PL421 2PL441 2PL451 - PL456 2PL471 2PL491 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 05, 2014 737-57A1323 12 of 102 BOEING SERVICE BULLETIN 737-57A1323