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Commercial Airplanes 747 Service Bulletin ALERT Number: 747-57A2360 Original Issue: January 20, 2017 ATA System: 5715 SUBJECT: WINGS - Landing Gear Support Beam - Fuse Pin - Inspection and Replacement 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 © 2017 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Unpublished Work.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: January 20, 2017 747-57A2360 1 of 68
2.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 20, 2017 747-57A2360 2 of 68 BOEING SERVICE BULLETIN 747-57A2360
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BLANK PAGE
Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected19
B. Concurrent Requirements19
C. Reason19
D. Description20
E. Compliance22
F. Approval25
G. Manpower25
H. Weight and Balance Changes26
I. Electrical Load Data27
J. References27
1. Existing Data:27
2. Data Supplied with this Service Bulletin:27
3. Installation Drawings Used in the Preparation of this Service Bulletin:27
K. Publications Affected27
L. Interchangeability and Intermixability of Parts28
M. Software Accomplishment Summary28
2. MATERIAL INFORMATION29
A. Material - Price and Availability29
B. Industry Support Information29
C. Parts Necessary for Each Airplane29
1. Kits/Parts29
2. Parts and Materials Supplied by the Operator29
3. Parts Modified and Reidentified31
4. Parts Removed and Not Replaced31
D. Parts Necessary to Change Spares31
E. Special Tooling - Price and Availability31
F. Special Tooling Necessary to do this Service Bulletin31
3. ACCOMPLISHMENT INSTRUCTIONS33
A. GENERAL INFORMATION33
B. WORK INSTRUCTIONS35
FIGURE 1: MAGNETIC PARTICLE INSPECTION (MPI) OF FUSE PIN39
FIGURE 2: LEFT WING - LANDING GEAR SUPPORT BEAM - FUSE PIN GREASE PLUG - REMOVAL
.41
FIGURE 3: RIGHT WING - LANDING GEAR SUPPORT BEAM - FUSE PIN GREASE PLUG - REMOVAL
.45
FIGURE 4: LEFT WING - LANDING GEAR SUPPORT BEAM - FUSE PIN - SURFACE HFEC INSPECTION
.49
FIGURE 5: RIGHT WING - LANDING GEAR SUPPORT BEAM - FUSE PIN - SURFACE HFEC INSPECTION
.52
FIGURE 6: LEFT WING - LANDING GEAR SUPPORT BEAM - FUSE PIN GREASE PLUG - INSTALLATION
.55
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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FIGURE 7: RIGHT WING - LANDING GEAR SUPPORT BEAM - FUSE PIN GREASE PLUG -
INSTALLATION59
APPENDIX A: COMPLIANCE LOGIC DIAGRAMS63
APPENDIX B: JACKING PROCEDURE FOR FUSE PIN REMOVAL68
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 20, 2017 747-57A2360 4 of 68 BOEING SERVICE BULLETIN 747-57A2360
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Commercial Airplanes 747 Service Bulletin ALERT SummaryNumber: 747-57A2360Original Issue: January 20, 2017 ATA System: 5715 SUBJECT: WINGS - Landing Gear Support Beam - Fuse Pin - Inspection and Replacement
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 Accomplishment of this service bulletin will make sure there is no crack in the fuse pin of the wing landing gear beam end fitting. An undetected crack in a fuse pin can cause the fuse pin to break. A broken fuse pin will not support the wing landing gear beam, causing damage to the surrounding structure, including flight control cables and hydraulic systems. Damage to the hydraulic systems and control cables could result in loss of controllability of the airplane.
One operator reported to Boeing that during a walk-around after a flight, the operator found damage to the lower trailing edge panels of the left wing of a 747-400 airplane. Further inspection revealed that the left wing landing gear beam end fitting fuse pin had broken into two pieces. The airplane had 17,879 flight cycles and 102,793 flight hours at the time of the failure. Boeing has done an analysis and determined that the fuse pin broke as a result of fatigue. This is the only report Boeing has received of a broken fuse pin in this location in the entire 747 fleet.
This service bulletin gives instructions to inspect and replace cracked fuse pins of the wing landing gear support beam end fittings. Repeat inspections or replacements are necessary to make sure that there is no crack in the fuse pin.
Boeing Service Related Problem (SRP) 747-57-0290 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 747 FTD 57-15008 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: January 20, 2017 747-57A2360 5 of 68
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 YesOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION Do one of the following options and repeat OPTION 1, OPTION 2, or OPTION 3 thereafter:
OPTION 1: FUSE PIN REPLACEMENT
1. Get access and remove the fuse pin.
NOTE: Jacking of the airplane is necessary to remove and replace the fuse pin.
2. Install new fuse pin.
3. Close access.
OPTION 2: MAGNETIC PARTICLE INSPECTION (MPI) OF FUSE PIN
1. Get access and remove the fuse pin.
NOTE: Jacking of the airplane is necessary to remove and do a MPI of the fuse pin.
2. Do a MPI of the fuse pin for any crack.
a. If no crack is found, install a serviceable fuse pin.
b. If any crack is found, install a new fuse pin.
3. Close access.
OPTION 3: SURFACE HIGH-FREQUENCY EDDY CURRENT (HFEC) INSPECTION OF FUSE PIN
1. Get access and remove the grease plug on the fuse pin.
NOTE: Jacking of the airplane is not necessary to do a surface HFEC inspection of the fuse pin.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 20, 2017 747-57A2360 6 of 68 BOEING SERVICE BULLETIN 747-57A2360
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2. Do a surface HFEC inspection of the fuse pin for any crack.
a. If no crack is found, install kept grease plug.
b. If any crack is found, remove and install a new fuse pin.
3. Close access.
EFFECTIVITY All 747-100/-100B/-100B SUD/-200B/-200C/-200F/-300/-400/-400D/-400F/747SP/747SR Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s).
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 OPTION 1: FUSE PIN REPLACEMENT Elapsed HoursTotal Task HoursAirplanes
10.3045.50All airplanes OPTION 2: MAGNETIC PARTICLE INSPECTION (MPI) OF FUSE PIN Elapsed HoursTotal Task HoursAirplanes
12.3047.50All airplanes OPTION 3: SURFACE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION
OF FUSE PIN Elapsed HoursTotal Task HoursAirplanes
10.1010.10All airplanes Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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BOEING SERVICE BULLETIN 747-57A2360
ALERT ALERT Refer to Paragraph 2.A., Material - Price and Availability.
LEFT SIDE SHOWN, RIGHT SIDE OPPOSITE
BEAM UPPER _ FLAP TRACK CHORD
LANDING GEAR SUPPORT
BEAM GATE FITTING
ASSEMBLY WEB
FUSE PIN
END FITTING
BEAM LOWER CHORD
REAR SPAR WING LANDING GEAR
TRUNNION BEARING DO ONE OF THE FOLLOWING OPTIONS AND REPEAT OPTIONS 1, OPTION 2, OR OPTION 3 THEREAFTER:
OPTION 1: FUSE PIN REPLACEMENT.
OPTION 2: MAGNETIC PARTICLE INSPECTION (MPI) OF FUSE PIN. 2533095 OPTION 3: SURFACE HFEC INSPECTION OF FUSE PIN.
Original Issue: January 20, 2017 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 747-57A2360 Work - See page 1 for details. 8 of 68
Commercial Airplanes 747 Service Bulletin ALERT Number: 747-57A2360 Original Issue: January 20, 2017 ATA System: 5715 SUBJECT: WINGS - Landing Gear Support Beam - Fuse Pin - Inspection and Replacement
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 all 747-100/-100B/-100B SUD/-200B/-200C/-200F/-300/-400/-400D/-400F/747SP/747SR Airplanes, line numbers 1-1419 in 7 Group(s). The Variable Numbers and Group Information for the applicable airplanes is given below.
Refer to Service Bulletin Index D6-30300 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
DESCRIPTIONCONFIGURATIONGROUP 747-100/-200B/-200C/-200F/747SR airplanes with 65B11261-1 fuse pins installed in production.
-1 747-100B/-100B SUD/-200B/-200C/-200F/-300/747SR airplanes with 65B11261-2 fuse pins installed in production.
-2 747-400/-400F airplanes with 65B11261-6 fuse pins installed in production.
-3 747-400/-400D/-400F airplanes with 65B11261-5 fuse pins installed in production.
-4 747-200B/-200F/-300 airplanes with 65B11261-4 fuse pins installed in production.
-5 747-400 airplanes with 65B11261-3 fuse pins installed in production.-6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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DESCRIPTIONCONFIGURATIONGROUP 747SP airplanes with 65B19191-1 fuse pins installed in production.-7 Airplane Models:
747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SP, 747SR GroupVariable Number 1RA001 - RA034 1RA101 - RA115 1RA161 - RA164 1RA201 - RA203 1RA216 - RA217 1RA245 - RA246 1RA251 - RA266 1RA301 - RA318 1RA351 - RA360 1RA369 - RA373 1RA401 - RA418 1RA501 - RA502 1RA521 - RA528 1RA532 - RA543 2RA544 - RA548 1RA551 - RA552 1RA559 - RA561 1RA581 - RA582 1RA585 1RA601 - RA602 1RA631 - RA635 1RA651 - RA652 1RA671 - RA677 1RA701 - RA702 1RA721 - RA725 2RA726 - RA731 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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GroupVariable Number 1RA741 - RA745 1RA749 2RA750 1RA761 - RA762 1RA781 - RA783 2RA784 1RA901 - RA916 1RB001 - RB016 1RB041 - RB044 1RB071 - RB075 1RB101 - RB102 2RB411 - RB413 2RB421 1RB601 - RB607 2RB681 - RB697 2RB711 2RB721 - RB723 2RB741 - RB748 1RD001 - RD004 1RD021 - RD022 1RD041 - RD045 2RD046 - RD059 1RD071 - RD072 2RD081 - RD083 2RD091 - RD092 1RD101 - RD104 1RD121 2RD122 - RD127 1RD131 2RD132 - RD144 2RD166 - RD167 2RD171 - RD172 2RD181 - RD183 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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GroupVariable Number 2RD201 - RD204 2RD221 - RD227 2RD231 - RD234 5RD235 2RD241 - RD243 2RD251 - RD262 2RD271 - RD272 2RD291 - RD292 2RD301 - RD302 2RD311 2RD351 - RD358 2RD361 - RD366 2RD381 - RD383 2RD411 - RD414 2RD421 - RD426 2RD431 - RD435 2RD441 - RD442 2RD451 - RD456 2RD461 2RD471 - RD475 2RD513 - RD519 2RD531 - RD533 2RD551 2RD561 2RD571 2RD581 - RD583 2RD591 - RD593 1RD601 - RD602 2RD603 - RD607 1RD621 - RD623 1RD641 2RD642 - RD649 2RD651 - RD659 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
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