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Commercial Airplanes 737 Service Bulletin ALERT Number: 737-53A1357 Original Issue: August 09, 2016 ATA System: 5311 SUBJECT: FUSELAGE - Frames and Bulkheads - Station 947.5 Frame Between Stringer S-24R and Stringer S-25R 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 © 2016 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Unpublished Work.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: August 09, 2016 737-53A1357 1 of 27
2.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 09, 2016 737-53A1357 2 of 27 BOEING SERVICE BULLETIN 737-53A1357
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Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected12
B. Concurrent Requirements12
C. Reason13
D. Description13
E. Compliance13
F. Approval14
G. Manpower15
H. Weight and Balance Changes15
I. Electrical Load Data15
J. References15
1. Existing Data:15
2. Data Supplied with this Service Bulletin:16
3. Installation Drawings Used in the Preparation of this Service Bulletin:16
K. Publications Affected16
L. Interchangeability and Intermixability of Parts16
M. Software Accomplishment Summary16
2. MATERIAL INFORMATION17
A. Material - Price and Availability17
B. Industry Support Information17
C. Parts Necessary for Each Airplane17
1. Kits/Parts17
2. Parts and Materials Supplied by the Operator17
3. Parts Modified and Reidentified17
4. Parts Removed and Not Replaced17
D. Parts Necessary to Change Spares17
E. Special Tooling - Price and Availability17
F. Special Tooling Necessary to do this Service Bulletin17
3. ACCOMPLISHMENT INSTRUCTIONS19
A. GENERAL INFORMATION19
B. WORK INSTRUCTIONS20
FIGURE 1: FUSELAGE FRAME - HIGH FREQUENCY EDDY CURRENT INSPECTION23
APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE TABLE 1: FUSELAGE FRAME AT STATION (STA) 947.5 COMMON TO THE WATER TANK SUPPORT INTERCOSTAL CLIP LOCATED BETWEEN STRINGER S-24R AND S-25R INSPECTION AND REPAIR . . . 26 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 09, 2016 737-53A1357 3 of 27 BOEING SERVICE BULLETIN 737-53A1357
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Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 09, 2016 737-53A1357 4 of 27 BOEING SERVICE BULLETIN 737-53A1357
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Commercial Airplanes 737 Service Bulletin ALERT SummaryNumber: 737-53A1357Original Issue: August 09, 2016 ATA System: 5311 SUBJECT: FUSELAGE - Frames and Bulkheads - Station 947.5 Frame Between Stringer S-24R and Stringer S-25R Inspection and Repair
THIS DOCUMENT 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 DOCUMENT TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE NEW OWNER.
CONCURRENT REQUIREMENTS None.
BACKGROUND This service bulletin gives instructions to do a surface High Frequency Eddy Current (HFEC) inspection for any crack in the fuselage frame at Station (STA) 947.5, right side, common to the water tank support intercostal clip located between stringer S-24R and stringer S-25R. Any undetected cracks in the frame could grow in size and result in a severed frame. The off-load due to a severed frame can result in multiple adjacent severed frames.
If not corrected, multiple adjacent severed frames could adversely affect the structural integrity of the airplane.
One operator of 737 Classic airplanes reported cracks on 20 airplanes. Ten of those cracks were on airplanes with line numbers 292-2565. Cracks on airplanes with line number 292-2565 will be addressed by a different service action. This service bulletin is being released to address cracking in fuselage frames at STA 947.5 for line numbers 2566-3132.
Ten cracks have been reported on airplanes with line numbers 2566-3132. These airplanes had accumulated between 39,400 and 51,745 flight cycles at the time of crack finding. The reported cracks were between 0.184 to 1.125 inch in length. The cause of the cracks was found to be fatigue caused by cyclic loading of the fuselage and out of plane bending of the frame caused by the water tank loads.
Accomplishment of the inspections in accordance with this service bulletin will make sure that any crack in the fuselage frame at STA 947.5, common to the water tank support intercostal clip, located between stringer S-24R and stringer S-25R, is found and repaired. Repair of any crack will make sure the frame maintains its structural integrity.
Boeing Fleet Team Digest (FTD) 737 FTD 53-15001 is related to this service bulletin.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 09, 2016 737-53A1357 5 of 27
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 ChangesYesWeight and Balance Change 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 NoSpecial Tooling Required ACTION Get access to the aft cargo compartment aft bulkhead. Remove and keep the aft cargo compartment aft bulkhead lining, sidewall lining and insulation to get access to fuselage frame at STA 947.5. Do a surface High Frequency Eddy Current (HFEC) inspection of the fuselage frame at STA 947.5 common to the water tank support intercostal clip located between stringer S-24R and stringer S-25R for any crack. If any crack is found, originating at the fastener hole in the fuselage frame common to the water tank support intercostal clip, or originating at the frame adjacent to the water tank support intercostal clip, do the repair in accordance with this service bulletin. If no crack is found, continue to do the repeat inspections in accordance with this service bulletin.
EFFECTIVITY 737-300/-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 repair procedures given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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BOEING SERVICE BULLETIN 737-53A1357
ALERT ALERT
MATERIAL INFORMATION None.
DO A SURFACE HIGH FREQUENCY EDDY
CURRENT (HFEC) INSPECTION OF THE FUSELAGE FRAME AT STA 947.5 COMMON TO
THE WATER TANK SUPPORT INTERCOSTAL CLIP LOCATED BETWEEN STRINGER S-24R AND TRINGER S-25R FOR ANY CRACK. IF ANY
CRACK IS FOUND, ORIGINATING AT THE
ASTENER HOLE IN THE FUSELAGE FRAME COMN 1ON TO THE WATER TANK SUPPORT
TERCOSTAL CLIP OR ORIGINATING AT THE
FRAME ADJACEN NATER TANK
DO THE REPAIR ORDANCE SERVICE BULLETIN.
F NO UND INUE TO DO THE
REPEAT INSPEC TONS IN ACCORDANCE WITH THIS SERVICE BULLETIN.
STA
947.5 FRAME S-24R BL
0.0 • INBD AFT CARGO COMPARTMENT AFT BULKHEAD 2463198 Original Issue: August 09, 2016 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING Work - See page 1 for details. 737-53A1357 7 of 27
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 09, 2016 737-53A1357 8 of 27 BOEING SERVICE BULLETIN 737-53A1357
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Commercial Airplanes 737 Service Bulletin ALERT Number: 737-53A1357 Original Issue: August 09, 2016 ATA System: 5311 SUBJECT: FUSELAGE - Frames and Bulkheads - Station 947.5 Frame Between Stringer S-24R and Stringer S-25R Inspection and Repair
THIS DOCUMENT 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 DOCUMENT TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE NEW OWNER.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes This service bulletin is applicable to 737-300/-400/-500 Airplanes, line numbers 2566-3132, in 1 Group. The Variable Numbers and Group Information for the applicable airplanes is given below.
Refer to Service Bulletin Index D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
DESCRIPTIONCONFIGURATIONGROUP 737-300, -400 and -500 airplanes, line numbers 2566-3132.-1 Airplane Models:
737-300, 737-400, 737-500 GroupVariable Number 1PJ553 - PJ561 1PJ601 - PJ615 1PJ811 1PJ816 - PJ817 1PM548 - PM550 1PP518 - PP520 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 09, 2016 737-53A1357 9 of 27
GroupVariable Number 1PP876 - PP877 1PQ297 - PQ299 1PQ345 - PQ348 1PQ370 - PQ373 1PQ391 - PQ395 1PQ409 - PQ410 1PQ414 - PQ418 1PQ431 - PQ438 1PQ447 - PQ448 1PQ451 1PQ454 1PQ474 - PQ475 1PQ772 1PQ933 - PQ935 1PQ951 1PQ971 - PQ997 1PR001 - PR017 1PR021 - PR034 1PR041 - PR045 1PR061 - PR072 1PR077 - PR082 1PR091 - PR092 1PR096 1PR101 1PR121 - PR122 1PR131 - PR132 1PR141 - PR143 1PR161 - PR172 1PR181 1PS617 - PS630 1PS704 - PS706 1PS763 - PS799 1PS811 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: August 09, 2016 737-53A1357 10 of 27 BOEING SERVICE BULLETIN 737-53A1357
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GroupVariable Number 1PS836 - PS837 1PS841 - PS846 1PS851 - PS852 1PS856 1PS861 - PS863 1PS866 - PS868 1PS871 - PS874 1PS896 - PS897 1PS901 - PS941 1PS956 - PS957 1PS961 - PS963 1PS971 - PS978 1PT012 - PT015 1PT029 - PT031 1PT126 - PT138 1PT188 1PT307 - PT309 1PT513 - PT517 1PT585 - PT586 1PT643 - PT644 1PT656 1PT681 - PT685 1PT716 - PT717 1PT721 - PT725 1PT801 - PT834 1PT851 - PT854 1PT871 - PT886 1PT901 - PT930 1PT971 - PT973 1PT981 - PT985 1PT996 1PU301 1PU311 - PU313 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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GroupVariable Number 1PV204 - PV209 1PV226 - PV229 1PV284 - PV287 1PV296 1PV301 - PV302 1PV351 1PV356 - PV357 1PW086 - PW088 1PW168 - PW171 1PW246 - PW252 1PW262 - PW264 1PW271 - PW276 1PW285 - PW292 1PW401 - PW408 1PW411 - PW418 1PW421 - PW424 1PW431 - PW435 1PW441 - PW450 1PW521 - PW522 1PW524 - PW525 1PW527 - PW530 1PW547 - PW550 1PW621 - PW622 1PW635 - PW637 1PW831 1PW851 - PW856
2. Spares Affected None.
B. Concurrent Requirements None.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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