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Commercial Airplanes 747 Requirements Bulletin ALERT Number: 747-57A2363 RB Original Issue: December 23, 2019 ATA System: 5744 5720 SUBJECT: WINGS - Nacelle Strut Attach Fittings - Inboard and Outboard Engine Struts - Upper Wing Skin and Diagonal Brace - 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:
Copyright © 2019 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Unpublished Work.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 23, 2019 747-57A2363 RB 1 of 61
3.0
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 2 of 61 REQUIREMENTS BULLETIN 747-57A2363
ALERTALERT
BLANK PAGE
Table of Contents
1. EFFECTIVITY5
A. Airplanes5
B. Spares Affected9
2. CONCURRENT REQUIREMENTS9
3. COMPLIANCE9
4. APPROVAL24
5. ACCOMPLISHMENT INSTRUCTIONS27
A. General Information27
B. Work Instructions28
FIGURE 1: LEFT WING - OUTBOARD ENGINE STRUT POSITION 1 - UPPER WING SKIN - ULTRASONIC
INSPECTION40
FIGURE 2: LEFT WING - OUTBOARD ENGINE STRUT POSITION 1 - STRUT LOWER SPAR FITTING,
DIAGONAL BRACE STRUT END CLEVIS, DIAGONAL BRACE WING ATTACH END CLEVIS
AND LOWER LINK FITTING - DETAILED AND ULTRASONIC INSPECTION41
FIGURE 3: LEFT WING - INBOARD ENGINE STRUT POSITION 2 - UPPER WING SKIN - ULTRASONIC
INSPECTION45
FIGURE 4: LEFT WING - INBOARD ENGINE STRUT POSITION 2 - STRUT LOWER SPAR FITTING,
DIAGONAL BRACE STRUT END CLEVIS, DIAGONAL BRACE WING ATTACH END CLEVIS
AND LOWER LINK FITTING - DETAILED AND ULTRASONIC INSPECTION47
FIGURE 5: RIGHT WING - INBOARD ENGINE STRUT POSITION 3 - UPPER WING SKIN - ULTRASONIC
INSPECTION51
FIGURE 6: RIGHT WING - INBOARD ENGINE STRUT POSITION 3 - STRUT LOWER SPAR FITTING,
DIAGONAL BRACE STRUT END CLEVIS, DIAGONAL BRACE WING ATTACH END CLEVIS
AND LOWER LINK FITTING - DETAILED AND ULTRASONIC INSPECTION53
FIGURE 7: RIGHT WING - OUTBOARD ENGINE STRUT POSITION 4 - UPPER WING SKIN - ULTRASONIC
INSPECTION57
FIGURE 8: RIGHT WING - OUTBOARD ENGINE STRUT POSITION 4 - STRUT LOWER SPAR FITTING,
DIAGONAL BRACE STRUT END CLEVIS, DIAGONAL BRACE WING ATTACH END CLEVIS
AND LOWER LINK FITTING - DETAILED AND ULTRASONIC INSPECTION58
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 3 of 61 REQUIREMENTS BULLETIN 747-57A2363
ALERTALERT
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 4 of 61 REQUIREMENTS BULLETIN 747-57A2363
ALERTALERT
BLANK PAGE
Commercial Airplanes 747 Requirements Bulletin ALERT Number: 747-57A2363 RB Original Issue: December 23, 2019 ATA System: 5744 5720 SUBJECT: WINGS - Nacelle Strut Attach Fittings - Inboard and Outboard Engine Struts - Upper Wing Skin and Diagonal Brace - Inspection
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. THIS IS AN ENHANCED REQUIRED FOR COMPLIANCE DOCUMENT. THE BOEING
PROCESSES USED TO CREATE THE SERVICE BULLETIN (SB) AND THE REQUIREMENTS BULLETIN (RB) ENSURE THAT THE INFORMATION BETWEEN "RC START" AND "RC END" IN THE SB ARE IDENTICAL TO THE INFORMATION IN THE SAME SECTIONS (COMPLIANCE, WORK INSTRUCTIONS…) OF THE RB WHICH THE SB REFERS TO AS THE RELATED DOCUMENT.
1. Effectivity A. Airplanes This bulletin is applicable to 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SP, 747SR Airplane(s), line number(s) 1-1419 in 7 Group(s). Where the effectivity is presented with hyphens between line numbers, the airplane applicability means "through" and "inclusive", e.g. line numbers 1-9 means line numbers 1 through 9 inclusive.
DESCRIPTIONCONFIGURATIONGROUP 747-100/-200B/-200C/-200F/747SP/747SR light wing airplanes with Pratt & Whitney or General Electric engines -1 747-100B/-100B SUD/-200B/-200C/-200F/-300/747SP heavy wing airplanes with Pratt & Whitney engines -2 747-SR/-200B/-200C/-200F/-300 heavy wing airplanes with General Electric engines -3 747-100B/-200B/-200F/-300/747SP airplanes with Rolls Royce engines -4 747-400/-400D/-400F airplanes with Pratt & Whitney or General Electric engines -5 747-400/-400F airplanes with Rolls Royce engines-6 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 5 of 61
DESCRIPTIONCONFIGURATIONGROUP 747-400/-400F extended range airplanes with Pratt & Whitney or General Electric engines -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 - RA727 GroupVariable Number 2RA728 - RA731 1RA741 - RA745 1RA749 - RA750 1RA761 - RA762 1RA781 - RA783 2RA784 1RA901 - RA916 1RB001 - RB016 1RB041 - RB044 1RB071 - RB075 1RB101 - RB102 4RB411 - RB413 2RB421 1RB601 - RB607 3RB681 - RB697 2RB711 2RB721 - RB723 4RB741 - RB748 1RD001 - RD004 1RD021 - RD022 1RD041 - RD047 2RD048 - RD059 1RD071 - RD072 2RD081 - RD083 2RD091 - RD092 GroupVariable Number 1RD101 - RD104 1RD121 2RD122 - RD127 4RD131 - RD144 3RD166 - RD167 3RD171 - RD172 3RD181 - RD183 1RD201 - RD203 2RD204 2RD221 - RD227 3RD231 - RD235 2RD241 - RD243 2RD251 - RD262 3RD271 - RD272 3RD291 - RD292 2RD301 - RD302 4RD311 4RD351 - RD358 3RD361 - RD366 3RD381 - RD383 3RD411 - RD414 2RD421 - RD426 2RD431 - RD435 2RD441 - RD442 3RD451 - RD456 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 6 of 61 REQUIREMENTS BULLETIN 747-57A2363
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GroupVariable Number 3RD461 4RD471 - RD475 1RD513 - RD514 2RD515 - RD516 4RD517 - RD519 2RD531 4RD532 - RD533 1RD551 2RD561 2RD571 3RD581 - RD583 2RD591 - RD593 3RD601 - RD607 1RD621 - RD623 3RD641 - RD649 3RD651 - RD659 3RD661 1RD671 1RD681 - RD682 3RD691 - RD692 3RD701 - RD702 3RD721 - RD722 2RD741 - RD742 3RD751 - RD755 2RD761 3RD771 - RD775 2RD781 - RD783 3RD791 - RD792 2RE001 7RF001 - RF006 1RG001 - RG009 1RG091 1RG095 GroupVariable Number 1RG101 - RG104 1RG121 - RG126 1RG141 - RG142 2RG161 - RG164 1RG171 - RG174 1RG191 - RG193 1RG211 - RG213 1RG221 - RG222 4RH101 - RH102 4RH111 - RH112 4RH121 - RH122 1RJ131 - RJ133 1RJ151 - RJ152 2RJ301 - RJ303 3RJ321 - RJ322 3RJ331 - RJ333 5RL401 - RL403 5RL411 - RL436 7RL451 - RL456 5RL461 - RL462 5RL471 - RL481 5RL491 - RL492 5RL501 - RL502 7RL511 - RL516 7RL521 - RL522 7RL531 - RL534 6RL551 5RL561 - RL568 7RL571 - RL572 7RL576 - RL577 7RL579 7RL581 - RL586 5RL651 - RL655 GroupVariable Number 7RL671 - RL675 7RL681 - RL684 5RL751 - RL752 5RM001 - RM007 5RM010 - RM013 5RM021 - RM024 5RM026 - RM030 5RM036 - RM045 5RM051 - RM053 5RM071 5RM081 - RM084 5RM091 6RM096 - RM097 5RM116 - RM117 5RM126 - RM132 6RM136 - RM147 5RM156 - RM158 5RM166 - RM177 5RM191 - RM192 5RM231 - RM233 5RM241 - RM246 6RM261 - RM264 5RM316 - RM318 6RM331 - RM333 5RM341 5RM351 - RM355 5RM366 - RM367 5RM401 - RM403 5RM426 5RM431 5RM441 - RM443 5RM445 5RM801 - RM803 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 7 of 61 REQUIREMENTS BULLETIN 747-57A2363
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GroupVariable Number 5RM811 - RM813 5RM851 - RM855 6RM856 - RM859 5RM861 - RM863 5RM871 - RM878 7RM879 - RM880 6RM881 - RM890 5RM891 - RM899 5RM901 - RM906 5RM911 1RR001 - RR004 2RR005 2RR021 - RR025 2RR031 1RR201 3RR202 - RR206 2RR221 - RR226 2RR261 - RR267 1RR301 3RR302 - RR310 3RR331 - RR332 2RR336 1RR341 - RR344 2RR345 2RR361 - RR362 2RR421 - RR422 2RR431 - RR432 4RR441 - RR442 2RR451 2RR501 - RR504 2RR521 - RR522 4RR526 4RR531 GroupVariable Number 3RR551 - RR556 3RR561 2RR566 5RR701 5RR721 - RR724 5RR746 - RR748 5RR851 - RR856 5RR861 - RR862 6RR951 - RR952 2RS001 - RS002 3RS201 2RS211 - RS212 2RS221 - RS222 2RS231 - RS241 2RS251 - RS259 2RS263 2RS265 - RS268 4RS271 - RS276 2RS291 - RS292 4RS301 - RS306 4RS311 - RS320 3RS331 - RS333 3RS341 - RS342 2RS699 2RS701 - RS703 3RS711 - RS713 3RS721 - RS722 2RS731 - RS732 2RS741 - RS743 3RS751 - RS752 3RS761 - RS762 2RS771 3RS781 - RS782 GroupVariable Number 2RS786 5RT001 - RT014 5RT021 - RT022 5RT031 - RT035 5RT041 - RT047 5RT061 5RT071 - RT075 5RT101 - RT103 5RT121 5RT131 - RT137 5RT151 - RT152 5RT161 - RT168 5RT401 - RT412 5RT431 - RT447 6RT451 - RT469 6RT471 - RT499 5RT501 - RT535 6RT551 - RT568 5RT571 - RT591 5RT601 - RT657 6RT671 - RT673 5RT681 - RT682 5RT691 - RT699 5RT701 - RT704 5RT711 - RT717 5RT741 - RT757 5RT776 - RT777 6RT781 - RT784 5RT801 - RT803 5RT811 - RT814 5RT831 - RT837 5RT861 - RT864 5RT876 - RT880 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 8 of 61 REQUIREMENTS BULLETIN 747-57A2363
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GroupVariable Number 5RT931 - RT932 5RT945 - RT949 5RT951 - RT955 5RT966 - RT967 5RU001 - RU006 GroupVariable Number 5RU016 - RU017 5RU031 - RU032 5RU051 - RU052 5RU059 - RU062 5RU081 - RU083 GroupVariable Number 5RU101 - RU102 6RU121 - RU132 5RU801 - RU809 5RU831 - RU841 -- B. Spares Affected None.
2. CONCURRENT REQUIREMENTS None.
3. COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to Requirements bulletin 747-57A2363 RB. The Airworthiness Directive will make the compliance tasks and times given in Requirements bulletin 747-57A2363 RB mandatory.
Accomplish the required action(s), based on the applicable conditions in Tables 1 to 11 , in accordance with the Accomplishment Instructions.
When more than one OPTION is given for a CONDITION, do only one of the OPTION numbers. When more than one ACTION is given for a CONDITION or an OPTION, do all of the ACTION numbers for that CONDITION or OPTION.
Group 1:
Table 1: Left and Right Wing - Inboard and Outboard Engine Struts - Upper Wing Skin - Ultrasonic Inspection.
Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 1,000 flight cycles or 2 years after the original issue date of Requirements bulletin 747-57A2363 RB, whichever occurs first.
Before 15,000 total flight cycles.
Do an Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
All Airplanes 1,000 flight cycles-Repeat Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
CONDITION 1: NO
CRACK FOUND Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 9 of 61 REQUIREMENTS BULLETIN 747-57A2363
ALERTALERT
Group 1:
Table 1: Left and Right Wing - Inboard and Outboard Engine Struts - Upper Wing Skin - Ultrasonic Inspection.
Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flight.CONDITION 2 (ACTION
1): Contact The Boeing Company for repair instructions and do the repair.
CONDITION 2: ANY
CRACK FOUND 1,000 flight cycles-CONDITION 2 (ACTION
2): Repeat Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
Group 2:
Table 2: Left and Right Wing - Inboard and Outboard Engine Struts - Upper Wing Skin - Ultrasonic Inspection.
Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 1,000 flight cycles or 2 years after the original issue date of Requirements bulletin 747-57A2363 RB, whichever occurs first.
Before 15,000 total flight cycles.
Do an Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
All Airplanes 2,000 flight cycles-Repeat Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
CONDITION 1: NO
CRACK FOUND Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 10 of 61 REQUIREMENTS BULLETIN 747-57A2363
ALERTALERT
Group 2:
Table 2: Left and Right Wing - Inboard and Outboard Engine Struts - Upper Wing Skin - Ultrasonic Inspection.
Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flight.CONDITION 2 (ACTION
1): Contact The Boeing Company for repair instructions and do the repair.
CONDITION 2: ANY
CRACK FOUND 2,000 flight cycles-CONDITION 2 (ACTION
2): Repeat Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
Group 3:
Table 3: Left and Right Wing - Inboard and Outboard Engine Struts - Upper Wing Skin - Ultrasonic Inspection.
Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 1,000 flight cycles or 2 years after the original issue date of Requirements bulletin 747-57A2363 RB, whichever occurs first.
Before 15,000 total flight cycles.
Do an Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
All Airplanes 3,000 flight cycles-Repeat Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
CONDITION 1: NO
CRACK FOUND Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 11 of 61 REQUIREMENTS BULLETIN 747-57A2363
ALERTALERT
Group 3:
Table 3: Left and Right Wing - Inboard and Outboard Engine Struts - Upper Wing Skin - Ultrasonic Inspection.
Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flight.CONDITION 2 (ACTION
1): Contact The Boeing Company for repair instructions and do the repair.
CONDITION 2: ANY
CRACK FOUND 3,000 flight cycles-CONDITION 2 (ACTION
2): Repeat Ultrasonic inspection of the upper wing skin at engine strut positions 1 through 4 for any crack.
Group 4:
Table 4: Left and Right Wing - Inboard and Outboard Engine Struts - Upper Wing Skin - Ultrasonic Inspection.
Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 1,000 flight cycles or 2 years after the original issue date of Requirements bulletin 747-57A2363 RB, whichever occurs first.
Before 15,000 total flight cycles.
ACTION 1: Do an Ultrasonic inspection of the upper wing skin at outboard engine strut positions 1 and 4 for any crack.
All Airplanes -ACTION 2: Do an Ultrasonic inspection of the upper wing skin at inboard engine strut positions 2 and 3 for any crack.
1,000 flight cycles-CONDITION 1 (ACTION
1): Repeat Ultrasonic inspection of the upper wing skin at outboard engine strut positions 1 and 4 for any crack.
CONDITION 1: NO
CRACK FOUND 2,000 flight cycles-CONDITION 1 (ACTION
2): Repeat Ultrasonic inspection of the upper wing skin at inboard engine strut positions 2 and 3 for any crack.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 23, 2019 747-57A2363 RB 12 of 61 REQUIREMENTS BULLETIN 747-57A2363