# Boeing Alert Service Bulletin 747-53A2878: No revision named - Rights: © The Boeing Company. Filed by the FAA in regulations.gov docket FAA-2016-9050; AD 2017-02-09 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Boeing Alert Service Bulletin 747-53A2878](https://openairdocs.org/service-documents/boeing/747-53a2878.md) - Title as filed: SB-747-53A2878-00 - Pages: 109 - PDF: https://openairdocs.org/files/sha256/09/7c/097c53dd1e61e8e11a1b3212aca234be4f60ab2e61cfa21a8254028cdc7b0b7b - Page: https://openairdocs.org/service-documents/boeing/747-53a2878/file/097c53dd1e61 ## Text Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Commercial Airplanes 747 Service Bulletin ALERT Number: 747-53A2878 Original Issue: May 19, 2016 ATA System: 5331 SUBJECT: FUSELAGE - Section 44 - Crown Skin Inner Surface - 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 Unpublished Work.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: May 19, 2016 747-53A2878 1 of 109 7.0 ### Page 2 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 2 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT BLANK PAGE ### Page 3 Table of Contents Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2. Data Supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 24 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 M. Software Accomplishment Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 C. Parts Necessary for Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 1. Kits/Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 2. Parts and Materials Supplied by the Operator . . . . . . . . . . . . . . . . . . . . . . . . 60 3. Parts Modified and Reidentified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 4. Parts Removed and Not Replaced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 61 3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 FIGURE 1: LEFT SIDE FUSELAGE CROWN SKIN INNER SURFACE AT STA 1283, 1350, 1480 INSPECTION [Group 1] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 FIGURE 2: RIGHT SIDE FUSELAGE CROWN SKIN INNER SURFACE AT STA 1283, 1350,1480 INSPECTION [Group 1] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 FIGURE 3: LEFT SIDE FUSELAGE CROWN SKIN INNER SURFACE AT STA 1241, 1350, 1480 INSPECTION [Group 2] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 FIGURE 4: RIGHT SIDE FUSELAGE CROWN SKIN INNER SURFACE AT STA 1241, 1350, 1480 INSPECTION [Group 2] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 FIGURE 5: LEFT SIDE FUSELAGE CROWN SKIN INNER SURFACE AT STA 1283, 1350, 1480 MODIFICATION AND REPAIR [Group 1] . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 FIGURE 6: RIGHT SIDE FUSELAGE CROWN SKIN INNER SURFACE AT STA 1283, 1350, 1480 MODIFICATION AND REPAIR [Group 1] . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 3 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 4 FIGURE 7: LEFT SIDE FUSELAGE CROWN SKIN INNER SURFACE AT STA 1241, 1350, 1480 MODIFICATION AND REPAIR [Group 2] . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 FIGURE 8: RIGHT SIDE FUSELAGE CROWN SKIN INNER SURFACE AT STA 1241, 1350, 1480 MODIFICATION AND REPAIR [Group 2] . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 1: INSPECTION, MODIFICATION AND REPAIR OF THE FUSELAGE CROWN SKIN STA 1265 TO STA 1500 [Group 1] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 APPENDIX B: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 2: INSPECTION, MODIFICATION AND REPAIR OF THE FUSELAGE CROWN SKIN STA 1220 TO STA 1500 [Group 2] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 APPENDIX C: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 3: POST MODIFICATION OR POST REPAIR INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 APPENDIX D: PART DEMAND INTENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 4 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 5 Commercial Airplanes 747 Service Bulletin ALERT SummaryNumber: 747-53A2878Original Issue: May 19, 2016 ATA System: 5331 SUBJECT: FUSELAGE - Section 44 - Crown Skin Inner Surface - 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 do inspections of the fuselage crown skin inner surface at Body Stations (STA) 1283, 1350, and 1480 for passenger airplanes, and STA 1241, 1350, and 1480 for freighters, and to install repairs if any crack or corrosion is found. If these inspections and repairs are not done, cracks or corrosion can develop rapidly on the crown skin inner surface. If the cracks or corrosion are not repaired, the cracks can rapidly join together and can cause a sudden decompression and loss of structural integrity. Operators of 747-400 airplanes have told Boeing about wide spread corrosion damage that was found on the skin inner surface along the upper bulkhead at STA 1480, between stringers S-15L and S-16R. Corrosion was also found on the fuselage skin inner surface aft of the STA 1350 frame between stringers S-15 and S-16R and between stringers S-17 and S-18R and on the skin inner surface aft of the STA 1283 frame, between stringers S-5L and S-8L. Accomplishment of the inspections in this service bulletin and installation of a repair or modification will help ensure the structural integrity of the fuselage crown skin at STA 1283, 1350, and 1480 for passenger airplanes and STA 1241, 1350, and 1480 for freighters. Boeing Service Related Problem (SRP) 747-SRP-53-0447 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 ChangesYesWeight and Balance Change Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 5 of 109 ### Page 6 ReferenceAffectedPlanning Data 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 Air- plane Flight Manual) Paragraph 2.C.1., Kits/PartsYesKits/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 (PRR 85901-137RS) Do a detailed inspection for any missing or degraded finish, any sign of corrosion, such as lifted, peeling or blistering paint, and for any crack on the skin inner surface at the locations that follow: Group 1: 1. STA 1265 to STA 1301 between stringers S-12L and S-12R. 2. STA 1335 to STA 1372 between stringers S-12L and S-19L. 3. STA 1335 to STA 1372 between stringers S-12R and S-19R. 4. STA 1460 to STA 1500 between stringers S-19L and S-19R. Group 2: 1. STA 1220 to STA 1265 between stringers S-12L and S-12R. 2. STA 1335 to STA 1372 between stringers S-12L and S-19L. 3. STA 1335 to STA 1372 between stringers S-12R and S-19R. 4. STA 1460 to STA 1500 between stringers S-19L and S-19R. If no missing or degraded finish, no sign of corrosion and no crack is found, repeat the inspections in accordance with this service bulletin. If any missing or degraded finish, any sign of corrosion, or any crack is found, do a general visual inspection for similar conditions on the remaining interior surface of the affected skin panel and install a repair in accordance with this service bulletin. NOTE: Entire panels for the S-12 to S-19 repairs (65B04197-23/-24 for passenger and -25/-26 for freighter) may be purchased. If the repairs are required for leading and trailing edges of these panels, removal and replacement would be preferable. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 6 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 7 EFFECTIVITY 747-400, 747-400D, and 747-400F airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes. COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directives AD 90-25-05 R1 and AD 2004-07-22 R1 are related to this service bulletin. The effective date of AD 90-25-05 R1 and AD 2004-07-22 R1 is January 22, 2008. The Federal Aviation Administration (FAA) will possibly release an additional 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 available for airplanes in warranty as of August 27, 2003. Please refer to Paragraph 2.B., Industry Support Information. The warranty remedies will expire eight years from the original issue date of this service bulletin. MANPOWER Group 1: Elapsed HoursTotal Task HoursAirplanes 449.902635.00747-400 and 747-400D Group 2: Elapsed HoursTotal Task HoursAirplanes 449.402634.00747-400F Refer to Paragraph 1.G., Manpower. MATERIAL INFORMATION Boeing Supplied Kits/Parts. Refer to Paragraph 2.A., Material - Price and Availability. Operators are encouraged to complete the survey provided in APPENDIX D of this service bulletin to help Boeing predict the quantity and timing of the Boeing Supplied Kits/Parts. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 7 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 8 (OCR) BOEING SERVICE BULLETIN 747-53A2878 ALERT ALERT - INSPECT STA 1265 TO STA 1301 BETWEEN STRINGERS 12L AND 12R -INSPECT STA 1335 TO STA 1372 BETWEEN STRINGERS 12L AND 19L - INSPECT STA 1335 TO STA 1372 BETWEEN STRINGERS 12R AND 19R -INSPECT STA 1460 TO STA 1500 BETWEEN STRINGERS 19L AND 19R -INSPECT STA 1220 TO STA 1265 BETWEEN STRINGERS 12L AND 12R -INSPECT STA 1335 TO STA 1372 BETWEEN STRINGERS 12L AND 19L -INSPECT STA 1335 TO STA 1372 BETWEEN STRINGERS 12R AND 19R - INSPECT STA 1460 TO STA 1500 BETWEEN STRINGERS 19L AND 19R STA 1480 STA 1000 0 0 0000 PASSENGER AIRPLANE SHOWN, 2377089 FREIGHTER AIRPLANE SIMILAR Original Issue: May 19, 2016 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 747-53A2878 Work - See page 1 for details. 8 of 109 ### Page 9 Commercial Airplanes 747 Service Bulletin ALERT Number: 747-53A2878 Original Issue: May 19, 2016 ATA System: 5331 SUBJECT: FUSELAGE - Section 44 - Crown Skin Inner Surface - 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 This service bulletin is applicable to 747-400, 747-400D and 747-400F airplanes, line numbers 968-1273 in 2 Groups. The Variable Numbers and Group Information for the applicable airplanes is given below. Refer to PRR 85901-137RS for data about this change. Refer to Service Bulletin Index D6-30300 Part 3 for Airplane Variable Number, Line Number, and Serial Number data. DESCRIPTIONCONFIGURATIONGROUP 747-400 and 747-400D airplanes-1 747-400F airplanes-2 Airplane Models: 747-400, 747-400D, 747-400F GroupVariable Number 2RL401 2RL411 - RL416 2RL651 - RL653 1RM001 - RM005 1RM011 - RM012 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 9 of 109 ### Page 10 GroupVariable Number 1RM021 - RM024 1RM026 - RM028 1RM036 - RM039 1RM041 - RM043 1RM051 1RM071 1RM081 - RM084 1RM091 1RM096 - RM097 1RM116 - RM117 1RM126 - RM131 1RM136 - RM147 1RM156 - RM158 1RM166 - RM177 1RM191 - RM192 1RM231 - RM233 1RM241 - RM244 1RM261 - RM264 1RM316 - RM318 1RM331 - RM333 1RM341 1RM351 - RM352 1RM801 - RM802 1RM811 - RM813 2RM851 - RM853 2RM856 - RM857 2RM861 2RM871 - RM873 2RM881 - RM885 2RM891 - RM899 2RM901 - RM903 2RM911 2RR701 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 10 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 11 GroupVariable Number 2RR721 - RR724 2RR746 - RR748 2RR851 - RR856 2RR861 - RR862 2RR951 - RR952 1RT010 - RT014 1RT034 - RT035 1RT134 - RT137 1RT151 - RT152 1RT161 - RT168 1RT411 - RT412 1RT442 - RT447 1RT465 - RT469 1RT497 - RT499 1RT519 - RT530 1RT535 1RT581 - RT590 1RT620 - RT630 1RT635 - RT640 1RT657 1RT697 - RT699 1RT745 - RT750 1RT755 - RT757 1RT784 1RT801 - RT803 1RT811 - RT814 1RT831 - RT837 1RT879 - RT880 1RT932 1RT945 - RT949 1RT953 - RT955 1RT966 - RT967 1RU001 - RU006 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 11 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 12 GroupVariable Number 1RU016 - RU017 1RU031 - RU032 1RU051 - RU052 1RU059 - RU062 1RU081 - RU083 1RU101 - RU102 1RU121 - RU132 1RU808 - RU809 1RU836 - RU841 2. Spares Affected None. B. Concurrent Requirements None. C. Reason This service bulletin gives instructions to do inspections of the fuselage crown skin inner surface at Body Stations (STA) 1283, 1350, and 1480 for passenger airplanes, and STA 1241, 1350, and 1480 for freighters, and to install repairs if any crack or corrosion is found. If these inspections and repairs are not done, cracks or corrosion can develop rapidly on the crown skin inner surface. If the cracks or corrosion are not repaired, the cracks can rapidly join together and can cause a sudden decompression and loss of structural integrity. Operators of 747-400 airplanes have told Boeing about wide spread corrosion damage that was found on the skin inner surface along the upper bulkhead at STA 1480, between stringers S-15L and S-16R. Corrosion was also found on the fuselage skin inner surface aft of the STA 1350 frame between stringers S-15 and S-16R and between stringers S-17 and S-18R and on the skin inner surface aft of the STA 1283 frame, between stringers S-5L and S-8L. Accomplishment of the inspections in this service bulletin and installation of a repair or modification will help ensure the structural integrity of the fuselage crown skin at STA 1283, 1350, and 1480 for passenger airplanes and STA 1241, 1350, and 1480 for freighters. Boeing Service Related Problem (SRP) 747-SRP-53-0447 is related to this service bulletin. D. Description Do a detailed inspection for any missing or degraded finish, any sign of corrosion, such as lifted, peeling or blistering paint, and for any crack on the skin inner surface at the locations that follow: Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 12 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 13 Group 1: 1. STA 1265 to STA 1301 between stringers S-12L and S-12R. 2. STA 1335 to STA 1372 between stringers S-12L and S-19L. 3. STA 1335 to STA 1372 between stringers S-12R and S-19R. 4. STA 1460 to STA 1500 between stringers S-19L and S-19R. Group 2: 1. STA 1220 to STA 1265 between stringers S-12L and S-12R. 2. STA 1335 to STA 1372 between stringers S-12L and S-19L. 3. STA 1335 to STA 1372 between stringers S-12R and S-19R. 4. STA 1460 to STA 1500 between stringers S-19L and S-19R. If no missing or degraded finish, no sign of corrosion and no crack is found, repeat the inspections in accordance with this service bulletin. If any missing or degraded finish, any sign of corrosion, or any crack is found, do a general visual inspection for similar conditions on the remaining interior surface of the affected skin panel and install a repair in accordance with this service bulletin. NOTE: Entire panels for the S-12 to S-19 repairs (65B04197-23/-24 for passenger and -25/-26 for freighter) may be purchased. If the repairs are required for leading and trailing edges of these panels, removal and replacement would be preferable. The work in this service bulletin is done in the maintenance zone(s) given below. Group 1: Affected Maintenance Zones ZoneModel 243, 244, 253, 254747-400, 747-400D Group 2: Affected Maintenance Zones ZoneModel 243, 244, 253, 254747-400F Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 13 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 14 E. Compliance Federal Aviation Administration (FAA) Airworthiness Directives AD 90-25-05 R1 and AD 2004-07-22 R1 are related to this service bulletin. The effective date of AD 90-25-05 R1 and AD 2004-07-22 R1 is January 22, 2008. The Federal Aviation Administration (FAA) will possibly release an additional Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory. 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 number or an OPTION number, do all of the ACTION numbers for that CONDITION number or OPTION number. NOTE: All requirements of AD 90-25-05 R1 Paragraph (n) are still applicable if any corrosion is found. 1. 2. In the tables that follow, "damage" includes any crack, corrosion, missing finish or degraded finish. Logic diagrams showing compliance tasks and compliance times are included as an aid in APPENDIX A, APPENDIX B and APPENDIX C. Do the required actions in accordance with Paragraph 3. Accomplishment Instructions. Group 1: Table 1: Inspection, Modification and Repair of the Fuselage Crown Skin STA 1265 to STA 1500 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 8 years after the date of is- suance of the original certificate of airworthiness or the original ex- port certificate of airworthiness. Do PART 1: SKIN INNER SURFACE INSPECTION for any damage. All airplanes. or Within 24 months after the original issue date of this service bulletin. or Within 6 years after the most re- cent inspection was done to com- ply with AD 90-25-05 R1. (b) 6 years. (a)-OPTION 1: Repeat PART 1: SKIN INNER SUR- FACE INSPECTION for any damage. CONDITION 1: NO DAM- AGE FOUND. -Before further flight.OPTION 2: Do PART 3: SKIN PANEL MODIFICA- TION OR REPAIR. (a) Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 14 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 15 Group 1: Table 1: Inspection, Modification and Repair of the Fuselage Crown Skin STA 1265 to STA 1500 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flight.CONDITION 1.1 (AC- TION 1): Complete PART 3: SKIN PANEL MODIFI- CATION OR REPAIR. (a) CONDITION 1.1: NO ADDI- TIONAL SKIN OR STRINGER DAMAGE OR EXISTING REPAIR FOUND. -Before further flight.CONDITION 1.1 (AC- TION 2): Do PART 4: SURFACE FINISH RESTORATION. See Table 3: Post Modification or Post Repair Inspec- tion. See Table 3: Post Modification or Post Repair Inspection. CONDITION 1.1 (AC- TION 3): Do PART 5: POST-MODIFICATION OR POST-REPAIR IN- SPECTION. -Before further flight.Contact Boeing for repair instructions and do the repair. CONDITION 1.2: ANY AD- DITIONAL SKIN OR STRINGER DAMAGE OR EXISTING REPAIR FOUND. -Before further flightDo PART 2: SKIN PANEL GENERAL VISUAL IN- SPECTION for any dam- age. CONDITION 2: ANY DAM- AGE FOUND. -Before further flight.Contact Boeing for repair instructions and do the repair. CONDITION 2.1: ANY CRACK FOUND DURING PART 1 OR PART 2 IN- SPECTION. -Before further flight.OPTION 3: Do PART 3: SKIN PANEL MODIFICA- TION OR REPAIR. (a) CONDITION 2.2: ANY CORROSION FOUND DURING PART 1 OR PART 2 INSPECTION, BUT NO CRACK FOUND. -Before further flight.OPTION 4 (ACTION 1):Do PART 6: SRM RE- PAIR. -Before further flight.OPTION 4 (ACTION 2): Do PART 4: SURFACE FINISH RESTORATION. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 15 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 16 Group 1: Table 1: Inspection, Modification and Repair of the Fuselage Crown Skin STA 1265 to STA 1500 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flight.CONDITION 2.2.1 (AC- TION 1): Complete PART 3: SKIN PANEL MODIFI- CATION OR REPAIR. (a) CONDITION 2.2.1: NO ADDITIONAL SKIN OR STRINGER DAMAGE OR EXISTING REPAIR FOUND. -Before further flight.CONDITION 2.2.1 (AC- TION 2): Do PART 4: SURFACE FINISH RESTORATION. See Table 3: Post Modification or Post Repair Inspec- tion. See Table 3: Post Modification or Post Repair Inspection. CONDITION 2.2.1 (AC- TION 3): Do PART 5: POST-MODIFICATION OR POST-REPAIR IN- SPECTION. -Before further flight.Contact Boeing for repair instructions and do the repair. CONDITION 2.2.2: ANY ADDITIONAL SKIN OR STRINGER DAMAGE OR EXISTING REPAIR FOUND. -Before further flight.Do PART 4: SURFACE FINISH RESTORATION. CONDITION 2.3: ANY DE- GRADED FINISH FOUND DURING PART 1 OR PART 2 INSPECTION, BUT NO CRACK OR CORROSION FOUND. (a) Accomplishing PART 3: SKIN PANEL MODIFICATION OR REPAIR terminates the repetitive PART 1: SKIN INNER SURFACE INSPECTIONS. Refer to Table 3 for post-repair or post-modification inspections. (b) The AD requires a revision of the FAA-approved maintenance program to include the corrosion control program specified in Boeing Document Number D6-36022, ''Aging Airplane Corrosion Prevention and Control Program, Model 747,'' Revision A, dated July 28, 1989. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 16 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 17 Group 2: Table 2: Inspection, Modification and Repair of the Fuselage Crown Skin STA 1220 to STA 1500 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 8 years after the date of is- suance of the original certificate of airworthiness or the original ex- port certificate of airworthiness. Do PART 1: SKIN INNER SURFACE INSPECTION for any damage. All airplanes. or Within 24 months after the original issue date of this service bulletin. or Within 6 years after the most re- cent inspection was done to com- ply with AD 90-25-05 R1. (b) 6 years. (a)-OPTION 1: Repeat PART 1: SKIN INNER SUR- FACE INSPECTION for any damage. CONDITION 1: NO DAM- AGE FOUND. -Before further flight.OPTION 2: Do PART 3: SKIN PANEL MODIFICA- TION OR REPAIR. (a) -Before further flight.CONDITION 1.1 (AC- TION 1): Complete PART 3: SKIN PANEL MODIFI- CATION OR REPAIR. (a) CONDITION 1.1: NO ADDI- TIONAL SKIN OR STRINGER DAMAGE OR EXISTING REPAIR FOUND. -Before further flight.CONDITION 1.1 (AC- TION 2): Do PART 4: SURFACE FINISH RESTORATION. See Table 3: Post Modification or Post Repair Inspec- tion. See Table 3: Post Modification or Post Repair Inspection. CONDITION 1.1 (AC- TION 3): Do PART 5: POST-MODIFICATION OR POST-REPAIR IN- SPECTION. -Before further flight.Contact Boeing for repair instructions and do the repair. CONDITION 1.2: ANY AD- DITIONAL SKIN OR STRINGER DAMAGE OR EXISTING REPAIR FOUND. -Before further flightDo PART 2: SKIN PANEL GENERAL VISUAL IN- SPECTION for any dam- age. CONDITION 2: ANY DAM- AGE FOUND. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 17 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 18 Group 2: Table 2: Inspection, Modification and Repair of the Fuselage Crown Skin STA 1220 to STA 1500 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flight.Contact Boeing for repair instructions and do the repair. CONDITION 2.1: ANY CRACK FOUND DURING PART 1 OR PART 2 IN- SPECTION. -Before further flight.OPTION 3: Do PART 3: SKIN PANEL MODIFICA- TION OR REPAIR. (a) CONDITION 2.2: ANY CORROSION FOUND DURING PART 1 OR PART 2 INSPECTION, BUT NO CRACK FOUND. -Before further flight.OPTION 4 (ACTION 1):Do PART 6: SRM RE- PAIR. -Before further flight.OPTION 4 (ACTION 2): Do PART 4: SURFACE FINISH RESTORATION. -Before further flight.CONDITION 2.2.1 (AC- TION 1): Complete PART 3: SKIN PANEL MODIFI- CATION OR REPAIR. (a) CONDITION 2.2.1: NO ADDITIONAL SKIN OR STRINGER DAMAGE OR EXISTING REPAIR FOUND. -Before further flight.CONDITION 2.2.1 (AC- TION 2): Do PART 4: SURFACE FINISH RESTORATION. See Table 3: Post Modification or Post Repair Inspec- tion. See Table 3: Post Modification or Post Repair Inspection. CONDITION 2.2.1 (AC- TION 3): Do PART 5: POST-MODIFICATION OR POST-REPAIR IN- SPECTION. -Before further flight.Contact Boeing for repair instructions and do the repair. CONDITION 2.2.2: ANY ADDITIONAL SKIN OR STRINGER DAMAGE OR EXISTING REPAIR FOUND. -Before further flight.Do PART 4: SURFACE FINISH RESTORATION. CONDITION 2.3: ANY DE- GRADED FINISH FOUND DURING PART 1 OR PART 2 INSPECTION, BUT NO CRACK OR CORROSION FOUND. (a) Accomplishing PART 3: SKIN PANEL MODIFICATION OR REPAIR terminates the repetitive PART 1: SKIN INNER SURFACE INSPECTIONS. Refer to Table 3 for post-repair or post-modification inspections. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 18 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 19 Group 2: Table 2: Inspection, Modification and Repair of the Fuselage Crown Skin STA 1220 to STA 1500 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition (b) The AD requires a revision of the FAA-approved maintenance program to include the corrosion control program specified in Boeing Document Number D6-36022, ''Aging Airplane Corrosion Prevention and Control Program, Model 747,'' Revision A, dated July 28, 1989. Table 3: Post Modification or Post Repair Inspection. Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 6,000 flight-cycles af- ter the modifica- tion or repair was installed. Before 20,000 total flight-cy- cles. Do PART 5: POST- MODIFICATION OR POST-REPAIR INSPEC- TION. CONDITION 3: The areas from STA 1283 to STA 1319, S-4 to S-12 and STA 1416-1438, S-4 to S-12, repaired in accordance with PART 3: SKIN PANEL MODIFICATION OR RE- PAIR, and the repair or modification was installed at or after 7,000 total flight- cycles. -Within 13,000 flight cycles after the modification or repair was in- stalled. Do PART 5: POST- MODIFICATION OR POST-REPAIR INSPEC- TION. CONDITION 4: The areas from STA 1283 to STA 1319, S-4 to S-12 and STA 1416-1438, S-4 to S-12, repaired in accordance with PART 3: SKIN PANEL MODIFICATION OR RE- PAIR and the repair or modification was installed before 7,000 total flight-cy- cles. -Within 6,000 flight cycles af- ter the modifica- tion or repair was installed. Before 20,000 total flight cy- cles. Do PART 5: POST- MODIFICATION OR POST-REPAIR INSPEC- TION. CONDITION 5: Any other affected areas, repaired in accordance with PART 3: SKIN PANEL MODIFICA- TION OR REPAIR, and the repair or modification was installed at or after 5,000 total flight-cycles. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 19 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 20 Table 3: Post Modification or Post Repair Inspection. Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 15,000 flight cycles after the modification or repair was in- stalled. Do PART 5: POST- MODIFICATION OR POST-REPAIR INSPEC- TION. CONDITION 6: Any other affected areas, repaired in accordance with PART 3: SKIN PANEL MODIFICA- TION OR REPAIR, and the repair or modification was installed before 5,000 total flight-cycles. 6,000 flight cycles.-Repeat PART 5: POST- MODIFICATION OR POST-REPAIR INSPEC- TION. CONDITION 7: NO DAM- AGE FOUND. -Before further flight.Contact Boeing for repair instructions and do the repair. CONDITION 8: ANY DAM- AGE FOUND. F. Approval This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes. If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin. In addition, the Manager of the FAA Seattle ACO also approves the accomplishment of the applicable post-repair inspections defined in part 5 as an AMOC to the accomplishment of the corresponding inspection and repair requirements defined in FAA AD 2004-07-22 R1, paragraphs (h) and (i), for the inspection of SSI F-23A and F-23B. When this SB specifies contacting Boeing for repair instructions, the repair instructions must be approved by the FAA in accordance with paragraph (l) of AD 2004-07-22 R1. All provisions of FAA AD 2004-07-22 R1 that are not specifically referenced in the above statement remain fully applicable and must be complied with accordingly. G. Manpower The table below shows an estimate of the task hours necessary to do this inspection and modification for each airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator task hour data if necessary. The estimate does not include lost time. These are some examples of lost time: • Time to adjust to the workplace • Time to schedule the work Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 20 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 21 • Time to inspect the work • Time to cure the materials • Time to make the parts • Time to find the tools. Group 1: Table 1: Inspection and Repair Installation - 747-400 and 747-400D Airplanes Elapsed HoursTask HoursNumber of PersonsTask 40.20402.0010Open Access 2.755.502FIGURE 1 2.755.502FIGURE 2 182.00910.005FIGURE 5 182.00910.005FIGURE 6 40.20402.0010Close Access 449.902635.00TOTAL FOR EACH AIRPLANE Group 2: Table 2: Inspection and Repair Installation - 747-400F Airplanes Elapsed HoursTask HoursNumber of PersonsTask 40.20402.0010Open Access 2.505.002FIGURE 3 2.505.002FIGURE 4 182.00910.005FIGURE 7 182.00910.005FIGURE 8 40.20402.0010Close Access 449.402634.00TOTAL FOR EACH AIRPLANE H. Weight and Balance Changes Group 1: Change in Moment (Pound-Inches) Change in Weight (Pounds)Airplane No changeNo change747-400 and 747-400D Airplanes - Cracked Skin Whole Replacement +315,096.0+228.0747-400 and 747-400D Airplanes - Cracked Skin Patched Repair Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 21 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 22 Group 2: Change in Moment (Pound-Inches) Change in Weight (Pounds)Airplane No changeNo change747-400F Airplanes - Cracked Skin Whole Replacement +306,000.0+225.0747-400F Airplanes - Cracked Skin Patched Repair I. Electrical Load Data Not applicable. J. References 1. Existing Data: a. Engineering Change Memo PRR 85901-137RS b. Boeing Service Letter 747-SL-00-018 c. Boeing Service Related Problem (SRP) 747-SRP-53-0447 d. Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2004-07-22 R1, 90-25-05 R1 e. Service Bulletin Index D6-30300 f. Standard Overhaul Practices Manual (SOPM) 20-10-32, 20-41-02, 20-41-05, 20-43-03, 20-50-01 g. 747-400 Aircraft Maintenance Manual (AMM) 07-11-01, 12-15-03, 12-15-04, 12-15-05, 25-21-04, 25-25-01, 25-28-01, 25-55-02, 51-24-13 h. 747-400 Structural Repair Manual (SRM) 51-20-01, 51-40-09, 51-50-02, 53-00-01 i. 747-400F Structural Repair Manual (SRM) 51-20-01, 51-40-09, 51-50-02, 53-00-01 j. 747-400SF Structural Repair Manual (SRM) 51-20-01, 51-40-09, 51-50-02, 53-00-01 k. 747 Supplemental Structural Inspection Document D6-35022 Item F-23 and Item F-26 2. Data Supplied with this Service Bulletin: a. Drawings: Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 22 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 23 ADCNDCN/REVSheetTitleDrawing No -A1FUSELAGE CROWN SKIN REPAIR KIT - STA 1241 TO STA 1480 675U0012 --10 --11 -A2 --3 --4 --5 --6 --7 --8 --9 -APSDLFUSELAGE CROWN SKIN REPAIR KIT - STA 1241 TO STA 1480 675U0012#DL -BKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1350 TO STA 1416, S-12L TO S-19L 675U0012-1 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1283 TO STA 1319, S-4R TO S-12R 675U0012-10 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1416 TO STA 1480, S-4L TO S-12L 675U0012-13 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1416 TO STA 1480, S-4R TO S-12R 675U0012-14 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-4L TO S-4R 675U0012-17 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-4L TO S-4R 675U0012-19 -BKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1350 TO STA 1416, S-12R TO S-19R 675U0012-2 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1350 TO STA 1416, S-12L TO S-19L 675U0012-21 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1350 TO STA 1416, S-12R TO S-19R 675U0012-22 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-12L TO S-19L 675U0012-27 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-12R TO S-19R 675U0012-28 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1241 TO STA 1283, S-4L TO S-12L 675U0012-33 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 23 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 24 ADCNDCN/REVSheetTitleDrawing No -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1241 TO STA 1283, S-4R TO S-12R 675U0012-34 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1416 TO STA 1480, S-4L TO S-12L 675U0012-37 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1416 TO STA 1480, S-4R TO S-12R 675U0012-38 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-12L TO S-19L 675U0012-5 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-12R TO S-19R 675U0012-6 -AKPLFUSELAGE CROWN SKIN REPAIR KIT - STA 1283 TO STA 1319, S-4L TO S-12L 675U0012-9 3. Installation Drawings Used in the Preparation of this Service Bulletin: None. K. Publications Affected 1. Publications: Chapter-SectionPublication 53-00747 Structural Repair Manual 2. Damage Tolerance Based Structural Inspections: Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This service bulletin affects FCS. DTI requirements for the structure affected are contained in Paragraph 1.E., Compliance of this service bulletin. L. Interchangeability and Intermixability of Parts Refer to Paragraph 2.C., Parts Necessary for Each Airplane, for interchangeability and intermixability information. M. Software Accomplishment Summary Not affected. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 24 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 25 2. MATERIAL INFORMATION A. Material - Price and Availability Boeing can supply the kits shown in Paragraph 2.C., Parts Necessary for Each Airplane. Operators are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin. The kits are subject to the terms and conditions of the Boeing standard purchase order acknowledgment. Prices are in United States Dollars. Terms: Net 30 days. Reference this service bulletin and submit your purchase order by one of these methods: 1. Order on-line via ATA Spec 2000 or The Boeing PART Page 2. Fax to (206) 662-7145 Group 1: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 43,967.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1350 to STA 1416, S-12L to S-19L 675U0012-1 20September 18, 2015 20October 16, 2015 5April 14, 2016 43,967.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1350 to STA 1416, S-12R to S-19R 675U0012-2 20September 18, 2015 20October 16, 2015 5April 19, 2016 28,182.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1438 to STA 1480, S-12L to S-19L 675U0012-5 20September 18, 2015 20October 16, 2015 5April 22, 2016 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 25 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 26 Group 1: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 28,182.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1438 to STA 1480, S-12R to S-19R 675U0012-6 20September 18, 2015 20October 16, 2015 5April 27, 2016 27,847.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1283 to STA 1319, S-4L to S-12L 675U0012-9 20August 18, 2015 20October 16, 2015 5March 24, 2016 27,847.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1283 to STA 1319, S-4R to S-12R 675U0012-10 20September 18, 2015 20October 16, 2015 5March 23, 2016 31,402.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1416 to STA 1480, S-4L to S-12L 675U0012-13 20September 18, 2015 20October 16, 2015 5May 2, 2016 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 26 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 27 Group 1: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 31,402.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1416 to STA 1480, S-4R to S-12R 675U0012-14 20September 18, 2015 20October 16, 2015 5May 5, 2016 27,777.0014116August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1438 to STA 1480, S-4L to S-4R 675U0012-17 20September 18, 2015 20October 16, 2015 5April 1, 2016 Group 2: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 27,777.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1438 to STA 1480, S-4L to S-4R 675U0012-19 10September 18, 2015 6October 16, 2015 5April 11, 2016 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 27 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 28 Group 2: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 50,712.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1350 to STA 1416, S-12L to S-19L 675U0012-21 10September 18, 2015 6October 16, 2015 5April 6, 2016 50,712.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1350 to STA 1416, S-12R to S-19R 675U0012-22 10September 18, 2015 6October 16, 2015 5May 10, 2016 48,807.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1438 to STA 1480, S-12L to S-19L 675U0012-27 10September 18, 2015 6October 16, 2015 5May 13, 2016 48,807.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1438 to STA 1480, S-12R to S-19R 675U0012-28 10September 18, 2015 6October 16, 2015 5May 18, 2016 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 28 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 29 Group 2: REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 27,972.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1241to STA 1283, S-4L to S-12L 675U0012-33 10September 18, 2015 6October 16, 2015 5May 23, 2016 27,972.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1241 to STA 1283, S-4R to S-12R 675U0012-34 10September 18, 2015 6October 16, 2015 5May 26, 2016 31,402.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1416 to STA 1480, S-4L to S-12L 675U0012-37 10September 18, 2015 6October 16, 2015 5June 1, 2016 31,402.001416August 27, 2015 Top Kit - Fuselage Crown Skin Repair Kit - STA 1416 to STA 1480, S-4R to S-12R 675U0012-38 10September 18, 2015 6October 16, 2015 5June 6, 2016 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 29 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 30 REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 12,040.005921August 27, 2015 FASTENER KIT675U0012-41 20August 27, 2015 20September 18, 2015 3,826.004021August 27, 2015 FASTENER KIT675U0012-42 20August 27, 2015 20August 31, 2015 4,498.004021August 27, 2015 FASTENER KIT675U0012-43 20August 27, 2015 20September 18, 2015 6,552.005111August 27, 2015 FASTENER KIT675U0012-44 20August 27, 2015 20August 31, 2015 4,394.005251August 27, 2015 FASTENER KIT675U0012-45 10September 24, 2015 10October 08, 2015 3October 22, 2015 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 30 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 31 REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 8,202.005251August 27, 2015 FASTENER KIT675U0012-46 10September 24, 2015 10October 08, 2015 3October 22, 2015 3,794.004021August 27, 2015 FASTENER KIT675U0012-47 10August 27, 2015 10September 18, 2015 3October 16, 2015 5,087.005251August 27, 2015 FASTENER KIT675U0012-48 10August 27, 2015 10September 18, 2015 3October 16, 2015 6,363.005251August 27, 2015 FASTENER KIT675U0012-49 10August 27, 2015 10September 18, 2015 3October 16, 2015 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 31 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 32 REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION. Unit Price as of the original issue date of this Ser- vice Bulletin (US Dollars) ROLT as of the original issue date of this Ser- vice Bulletin (Cal- endar Days) QTYDateNameKit Number 4,347.005251August 27, 2015 FASTENER KIT675U0012-50 20August 27, 2015 20August 31, 2015 Operators are encouraged to complete the survey provided in APPENDIX D of this service bulletin to help Boeing predict the quantity and timing of the Boeing Supplied Kits/Parts. B. Industry Support Information Boeing warranty remedies are available for airplanes in warranty as of August 27, 2003. Please refer to Paragraph 2.B., Industry Support Information. The warranty remedies will expire eight years from the original issue date of this service bulletin. C. Parts Necessary for Each Airplane 1. Kits/Parts To get the kits/parts shown below, refer to Paragraph 2.A., Material - Price and Availability. NOTE: To accomplish the modification, one top kit and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by the Operator, are necessary for each airplane. 1. 2. To accomplish the repair, one repair kit and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by the Operator, are necessary for each side of the airplane. Group 1: Kit 675U0012 NotesNameQTYNew Part Number -1 FUSELAGE CROWN SKIN REPAIR KIT - STA 1350 TO STA 1416, S-12L TO S-19L -675U0012-1 SKIN PANEL REPLACEMENT SECTION1675U0011-1 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 32 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 33 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -1 REPAIR TRIPLER - RAW MATERIAL1691U1041-25 REPAIR FILLER - RAW MATERIAL1691U1041-28 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -2 FUSELAGE CROWN SKIN REPAIR KIT - STA 1350 TO STA 1416, S-12R TO S-19R -675U0012-2 SKIN PANEL REPLACEMENT SECTION1675U0011-2 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-25 REPAIR FILLER - RAW MATERIAL1691U1041-28 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -5 FUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-12L TO S-19L -675U0012-5 SKIN PANEL REPLACEMENT SECTION1675U0011-5 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-26 REPAIR FILLER - RAW MATERIAL1691U1041-29 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -6 FUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-12R TO S-19R -675U0012-6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 33 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 34 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -6 SKIN PANEL REPLACEMENT SECTION1675U0011-6 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-26 REPAIR FILLER - RAW MATERIAL1691U1041-29 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -9 FUSELAGE CROWN SKIN REPAIR KIT - STA 1283 TO STA 1319, S-4L TO S-12L -675U0012-9 SKIN PANEL REPLACEMENT SECTION1675U0011-21 REPAIR DOUBLER - RAW MATERIAL1691U1041-24 REPAIR TRIPLER - RAW MATERIAL1691U1041-27 REPAIR FILLER - RAW MATERIAL1691U1041-33 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -10 FUSELAGE CROWN SKIN REPAIR KIT - STA 1283 TO STA 1319, S-4R TO S-12R -675U0012-10 SKIN PANEL REPLACEMENT SECTION1675U0011-22 REPAIR DOUBLER - RAW MATERIAL1691U1041-24 REPAIR TRIPLER - RAW MATERIAL1691U1041-27 REPAIR FILLER - RAW MATERIAL1691U1041-33 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 34 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 35 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -13 FUSELAGE CROWN SKIN REPAIR KIT - STA 1416 TO STA 1480, S-4L TO S-12L -675U0012-13 SKIN PANEL REPLACEMENT SECTION1675U0011-25 REPAIR DOUBLER - RAW MATERIAL1691U1041-24 REPAIR TRIPLER - RAW MATERIAL1691U1041-27 REPAIR FILLER - RAW MATERIAL1691U1041-30 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -14 FUSELAGE CROWN SKIN REPAIR KIT - STA 1416 TO STA 1480, S-4R TO S-12R -675U0012-14 SKIN PANEL REPLACEMENT SECTION1675U0011-26 REPAIR DOUBLER - RAW MATERIAL1691U1041-24 REPAIR TRIPLER - RAW MATERIAL1691U1041-27 REPAIR FILLER - RAW MATERIAL1691U1041-30 Group 1: Kit 675U0012 NotesNameQTYNew Part Number -17 FUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-4L TO S-4R -675U0012-17 SKIN PANEL REPLACEMENT SECTION1675U0011-37 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-26 REPAIR FILLER - RAW MATERIAL2691U1041-32 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 35 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 36 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -21 FUSELAGE CROWN SKIN REPAIR KIT - STA 1350 TO STA 1416, S-12L TO S-19L -675U0012-21 SKIN PANEL REPLACEMENT SECTION1675U0011-9 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-25 REPAIR FILLER - RAW MATERIAL1691U1041-28 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -22 FUSELAGE CROWN SKIN REPAIR KIT - STA 1350 TO STA 1416, S-12R TO S-19R -675U0012-22 SKIN PANEL REPLACEMENT SECTION1675U0011-10 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-25 REPAIR FILLER - RAW MATERIAL1691U1041-28 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -27 FUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-12L TO S-19L -675U0012-27 SKIN PANEL REPLACEMENT SECTION1675U0011-15 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-26 REPAIR FILLER - RAW MATERIAL1691U1041-29 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 36 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 37 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -28 FUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-12R TO S-19R -675U0012-28 SKIN PANEL REPLACEMENT SECTION1675U0011-16 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-26 REPAIR FILLER - RAW MATERIAL1691U1041-29 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -33 FUSELAGE CROWN SKIN REPAIR KIT - STA 1241 TO STA 1283, S-4L TO S-12L -675U0012-33 SKIN PANEL REPLACEMENT SECTION1675U0011-29 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-27 REPAIR FILLER - RAW MATERIAL1691U1041-30 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -34 FUSELAGE CROWN SKIN REPAIR KIT - STA 1241 TO STA 1283, S-4R TO S-12R -675U0012-34 SKIN PANEL REPLACEMENT SECTION1675U0011-30 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-27 REPAIR FILLER - RAW MATERIAL1691U1041-30 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 37 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 38 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -37 FUSELAGE CROWN SKIN REPAIR KIT - STA 1416 TO STA 1480, S-4L TO S-12L -675U0012-37 SKIN PANEL REPLACEMENT SECTION1675U0011-33 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-27 REPAIR FILLER - RAW MATERIAL1691U1041-30 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -38 FUSELAGE CROWN SKIN REPAIR KIT - STA 1416 TO STA 1480, S-4R TO S-12R -675U0012-38 SKIN PANEL REPLACEMENT SECTION1675U0011-34 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-27 REPAIR FILLER - RAW MATERIAL1691U1041-30 Group 2: Kit 675U0012 NotesNameQTYNew Part Number -19 FUSELAGE CROWN SKIN REPAIR KIT - STA 1438 TO STA 1480, S-4L TO S-4R -675U0012-19 SKIN PANEL REPLACEMENT SECTION1675U0011-39 REPAIR DOUBLER - RAW MATERIAL1691U1041-23 REPAIR TRIPLER - RAW MATERIAL1691U1041-26 REPAIR FILLER - RAW MATERIAL2691U1041-34 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 38 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 39 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-1 OR 675U0012-2 RETROFIT KITS) NotesNameQTYNew Part Number -41 (b)FASTENER KIT-675U0012-41 BOLT, 100 DEG SHEAR2BACB30FN8A6 BOLT, 100 DEG HEX DR18BACB30NW10K10X BOLT, 100 DEG HEX DR6BACB30NW10K11X (a)BOLT, 100 DEG HEX DR29BACB30NW6K3X (a)BOLT, 100 DEG HEX DR80BACB30NW6K3Y (a)BOLT, 100 DEG HEX DR33BACB30NW6K4X (a)BOLT, 100 DEG HEX DR106BACB30NW6K4Y (a)BOLT, 100 DEG HEX DR77BACB30NW6K5X BOLT, 100 DEG HEX DR18BACB30NW6K6X (a)BOLT, 100 DEG HEX DR29BACB30NW8K10X BOLT, 100 DEG HEX DR7BACB30NW8K11X BOLT, 100 DEG HEX DR4BACB30NW8K12X BOLT, 100 DEG HEX DR4BACB30NW8K14X BOLT, 100 DEG HEX D24BACB30NW8K4 BOLT, 100 DEG HEX DR2BACB30NW8K4X (a)BOLT, 100 DEG HEX DR127BACB30NW8K4Y (a)BOLT, 100 DEG HEX DR41BACB30NW8K5X BOLT, 100 DEG HEX DR24BACB30NW8K5Y (a)BOLT, 100 DEG HEX D394BACB30NW8K6 BOLT, 100 DEG HEX DR8BACB30NW8K6X BOLT, 100 DEG HEX DR1BACB30NW8K6Y BOLT, 100 DEG HEX DR14BACB30NW8K7X (a)BOLT, 100 DEG HEX DR53BACB30NW8K7Y BOLT, 100 DEG HEX DR14BACB30NW8K8X (a)BOLT, 100 DEG HEX DR37BACB30NW8K9X BOLT, PROTRUDING HD2BACB30NX10K13X BOLT, PROTRUDING HD5BACB30NX10K14X BOLT, PROTRUDING HD4BACB30NX10K15X BOLT, PROTRUDING HD8BACB30NX10K16X Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 39 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 40 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-1 OR 675U0012-2 RETROFIT KITS) NotesNameQTYNew Part Number -41 BOLT, PROTRUDING HD3BACB30NX10K17X BOLT, PROTRUDING HD14BACB30NX10K18X BOLT, PROTRUDING HD1BACB30NX12K14X BOLT TITANIUM O/S1BACB30NX12K15X (a)BOLT, PROTRUDING HD58BACB30NX6K3 BOLT, PROTRUDING HD23BACB30NX6K3X (a)BOLT, PROTRUDING HD44BACB30NX6K4 (a)BOLT, PROTRUDING HD40BACB30NX6K4X BOLT4BACB30NX6K5 BOLT, PROTRUDING HD13BACB30NX6K5X BOLT13BACB30NX6K6 BOLT, PROTRUDING HD10BACB30NX6K6X BOLT, PROTRUDING HD20BACB30NX6K7X (a)BOLT, PROTRUDING HD44BACB30NX6K8X BOLT, PROTRUDING HD12BACB30NX6K9X BOLT, PROTRUDING HD4BACB30NX8K10X BOLT, PROTRUDING HD8BACB30NX8K12X BOLT, PROTRUDING HD8BACB30NX8K13X BOLT, PROTRUDING HD6BACB30NX8K4X BOLT, PROTRUDING HD5BACB30NX8K5X BOLT, PROTRUDING HD12BACB30NX8K5Y BOLT, PROTRUDING HD4BACB30NX8K6X BOLT, HEX DRIVE7BACB30NX8K7 BOLT1BACB30NX8K8 HEX DRIVE BOLT7BACB30NX8K9 BOLT, RADIUS LEAD-IN6BACB30WQ4K14LX BOLT, RADIUS LEAD-IN2BACB30WQ4K15LX BOLT, RADIUS LEAD-IN4BACB30WQ4K6LX BOLT, RADIUS LEAD-IN2BACB30WQ4K7LX BOLT, RADIUS LEAD-IN1BACB30WQ4K8LX Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 40 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 41 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-1 OR 675U0012-2 RETROFIT KITS) NotesNameQTYNew Part Number -41 BOLT, RADIUS LEAD-IN2BACB30WQ5K15LX BOLT, RADIUS LEAD-IN4BACB30WQ5K16LX BOLT, RADIUS LEAD-IN4BACB30WQ5K17LX BOLT, RADIUS LEAD-IN4BACB30WQ5K18LX BOLT, HEX DRIVE4BACB30WQ5K19LX BOLT, RADIUS LEAD-IN10BACB30WQ5K20LX BOLT, RADIUS LEAD-IN4BACB30WR4K8LX BOLT, 100 DEG HEX DR6BACB30YP6K4 BOLT, 100 DEG HEX DR16BACB30YP6K6 COLLAR12BACC30AC8 (a)COLLAR40BACC30BH10 COLLAR2BACC30BH12 (a)COLLAR290BACC30BH6 (a)COLLAR55BACC30BH8 COLLAR21BACC30BL6 COLLAR24BACC30M10 (a)COLLAR159BACC30M6 (a)COLLAR587BACC30M8 (a)COLLAR185BACC30R6 (a)COLLAR207BACC30R8 SELF-LOCKING NUT19BACN10HY4AC (a)NUT31BACN10HY5AC WASHER, OVERSIZE19BACW10AW4AS WASHER, OVERSIZE19BACW10AW4AST (a)WASHER, OVERSIZE31BACW10AW5AS (a)WASHER, OVERSIZE31BACW10AW5AST WASHER, CSK14BACW10EG101C WASHER18BACW10EG81C (a) There are more parts than are necessary. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 41 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 42 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-1 OR 675U0012-2 RETROFIT KITS) NotesNameQTYNew Part Number -41 (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-5 OR 675U0012-6 RETROFIT KITS) NotesNameQTYNew Part Number -42 (b)FASTENER KIT-675U0012-42 BOLT, 100 DEG SHEAR2BACB30FN8A5 BOLT, 100 DEG HEX DR5BACB30NW6K10X BOLT, 100 DEG HEX DR2BACB30NW6K11X BOLT, 100 DEG HEX DR1BACB30NW6K12X BOLT, 100 DEG HEX DR1BACB30NW6K14X (a)BOLT, 100 DEG HEX DR47BACB30NW6K3X (a)BOLT, 100 DEG HEX DR51BACB30NW6K3Y (a)BOLT, 100 DEG HEX DR38BACB30NW6K4X (a)BOLT, 100 DEG HEX DR42BACB30NW6K4Y (a)BOLT, 100 DEG HEX DR58BACB30NW6K5X BOLT, 100 DEG HEX DR9BACB30NW6K6X BOLT, 100 DEG HEX DR6BACB30NW6K7X BOLT, 100 DEG HEX DR3BACB30NW6K8X BOLT, 100 DEG HEX DR1BACB30NW6K9X BOLT, 100 DEG HEX DR10BACB30NW8K10X BOLT, 100 DEG HEX DR2BACB30NW8K11X BOLT, 100 DEG HEX DR4BACB30NW8K12X BOLT, 100 DEG HEX DR2BACB30NW8K14X (a)BOLT, 100 DEG HEX DR46BACB30NW8K3Y BOLT, 100 DEG HEX D24BACB30NW8K4 (a)BOLT, 100 DEG HEX DR32BACB30NW8K4Y (a)BOLT421BACB30NW8K5 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 42 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 43 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-5 OR 675U0012-6 RETROFIT KITS) NotesNameQTYNew Part Number -42 (a)BOLT, 100 DEG HEX DR88BACB30NW8K6X BOLT, 100 DEG HEX DR16BACB30NW8K6Y BOLT, 100 DEG HEX DR2BACB30NW8K7X (a)BOLT, 100 DEG HEX DR36BACB30NW8K7Y BOLT, 100 DEG HEX DR8BACB30NW8K8X BOLT, 100 DEG HEX DR4BACB30NW8K9X (a)BOLT, PROTRUDING HD106BACB30NX6K3 (a)BOLT, PROTRUDING HD37BACB30NX6K4X BOLT3BACB30NX6K5 BOLT, PROTRUDING HD13BACB30NX6K5X BOLT, PROTRUDING HD2BACB30NX6K6X HI-LOK13BACB30NX6K7 BOLT, PROTRUDING HD20BACB30NX6K7X BOLT, PROTRUDING HD19BACB30NX6K8X BOLT, PROTRUDING HD2BACB30NX6K9X BOLT, PROTRUDING HD2BACB30NX8K10X BOLT, PROTRUDING HD4BACB30NX8K4Y BOLT, PROTRUDING HD8BACB30NX8K5Y BOLT, HEX DRIVE4BACB30NX8K7 BOLT, PROTRUDING HD2BACB30NX8K8X HEX DRIVE BOLT9BACB30NX8K9 BOLT, 100 DEG HEX DR5BACB30YP6K4 BOLT, 100 DEG HEX DR16BACB30YP6K6 COLLAR12BACC30AC8 (a)COLLAR222BACC30BH6 COLLAR17BACC30BH8 COLLAR21BACC30BL6 (a)COLLAR172BACC30M6 (a)COLLAR572BACC30M8 (a)COLLAR93BACC30R6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 43 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 44 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-5 OR 675U0012-6 RETROFIT KITS) NotesNameQTYNew Part Number -42 (a)COLLAR130BACC30R8 (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-9 OR 675U0012-10 RETROFIT KITS) NotesNameQTYNew Part Number -43 (b)FASTENER KIT-675U0012-43 BOLT, 100 DEG SHEAR2BACB30FN8A5 BOLT, 100 DEG HEX DR10BACB30NW6K10X BOLT, 100 DEG HEX DR1BACB30NW6K13X BOLT, 100 DEG HEX DR19BACB30NW6K3X BOLT, 100 DEG HEX DR21BACB30NW6K3Y (a)BOLT, 100 DEG HEX DR59BACB30NW6K4X BOLT, 100 DEG HEX DR15BACB30NW6K5X BOLT, 100 DEG HEX DR10BACB30NW6K6X BOLT, 100 DEG HEX DR9BACB30NW6K7X BOLT, 100 DEG HEX DR2BACB30NW6K8X BOLT, 100 DEG HEX DR2BACB30NW6K9X BOLT, 100 DEG HEX DR24BACB30NW8K10X BOLT, 100 DEG HEX DR4BACB30NW8K12X BOLT, 100 DEG HEX D24BACB30NW8K4 (a)BOLT, 100 DEG HEX DR82BACB30NW8K4Y (a)BOLT350BACB30NW8K5 BOLT, 100 DEG HEX DR12BACB30NW8K5Y (a)BOLT, 100 DEG HEX DR79BACB30NW8K6X BOLT, 100 DEG HEX DR24BACB30NW8K7 BOLT, 100 DEG HEX DR16BACB30NW8K7X Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 44 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 45 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-9 OR 675U0012-10 RETROFIT KITS) NotesNameQTYNew Part Number -43 BOLT, 100 DEG HEX DR13BACB30NW8K8X (a)BOLT, 100 DEG HEX DR75BACB30NW8K8Y BOLT, 100 DEG HEX DR15BACB30NW8K9X (a)BOLT, PROTRUDING HD88BACB30NX6K3 BOLT, PROTRUDING HD20BACB30NX6K4 BOLT, PROTRUDING HD17BACB30NX6K4X BOLT16BACB30NX6K5 BOLT, PROTRUDING HD4BACB30NX6K5X BOLT, PROTRUDING HD18BACB30NX6K7X BOLT, PROTRUDING HD8BACB30NX6K9X (a)BOLT, PROTRUDING HD31BACB30NX8K4Y BOLT, PROTRUDING HD1BACB30NX8K6X (a)BOLT, PROTRUDING HD37BACB30NX8K6Y BOLT, PROTRUDING HD3BACB30NX8K8X BOLT, PROTRUDING HD2BACB30NX8K9X (a)COLLAR68BACC30AC8 (a)COLLAR180BACC30BH6 COLLAR6BACC30BH8 (a)COLLAR134BACC30M6 (a)COLLAR563BACC30M8 COLLAR21BACC30R6 (a)COLLAR170BACC30R8 WASHER3BACW10EG81C (a)WASHER43BACW10EG82C (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 45 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 46 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-13 OR 675U0012-14 RETROFIT KITS) NotesNameQTYNew Part Number -44 (b)FASTENER KIT-675U0012-44 BOLT, 100 DEG SHEAR2BACB30FN8A5 BOLT, 100 DEG HEX DR1BACB30NW10K9X BOLT, 100 DEG HEX DR3BACB30NW6K10X BOLT, 100 DEG HEX DR1BACB30NW6K11X BOLT, 100 DEG HEX DR4BACB30NW6K12X BOLT, 100 DEG HEX DR1BACB30NW6K14X (a)BOLT, 100 DEG HEX DR68BACB30NW6K3X (a)BOLT, 100 DEG HEX DR53BACB30NW6K3Y (a)BOLT, 100 DEG HEX DR61BACB30NW6K4X (a)BOLT, 100 DEG HEX DR37BACB30NW6K5X BOLT, 100 DEG HEX DR15BACB30NW6K6X (a)BOLT, 100 DEG HEX DR36BACB30NW6K7X BOLT, 100 DEG HEX DR4BACB30NW6K8X BOLT, 100 DEG HEX DR2BACB30NW6K9X BOLT, 100 DEG HEX DR6BACB30NW8K10X BOLT, 100 DEG HEX DR2BACB30NW8K11X BOLT, 100 DEG HEX DR8BACB30NW8K12X BOLT, 100 DEG HEX DR2BACB30NW8K14X BOLT, 100 DEG HEX D24BACB30NW8K4 BOLT, 100 DEG HEX DR10BACB30NW8K4X (a)BOLT, 100 DEG HEX DR217BACB30NW8K4Y (a)BOLT473BACB30NW8K5 (a)BOLT, 100 DEG HEX DR62BACB30NW8K5X BOLT, 100 DEG HEX DR12BACB30NW8K5Y BOLT, 100 DEG HEX D24BACB30NW8K6 (a)BOLT, 100 DEG HEX DR53BACB30NW8K6X BOLT, 100 DEG HEX DR8BACB30NW8K7X BOLT, 100 DEG HEX DR8BACB30NW8K8X (a)BOLT, 100 DEG HEX DR73BACB30NW8K8Y Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 46 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 47 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-13 OR 675U0012-14 RETROFIT KITS) NotesNameQTYNew Part Number -44 BOLT, 100 DEG HEX DR13BACB30NW8K9X BOLT, PROTRUDING HD1BACB30NX10K8X (a)BOLT, PROTRUDING HD141BACB30NX6K3 (a)BOLT, PROTRUDING HD32BACB30NX6K3X BOLT, PROTRUDING HD16BACB30NX6K4 BOLT, PROTRUDING HD3BACB30NX6K4X BOLT, PROTRUDING HD5BACB30NX6K5X BOLT, PROTRUDING HD3BACB30NX6K6X BOLT, PROTRUDING HD16BACB30NX6K7X BOLT, PROTRUDING HD8BACB30NX6K8X (a)BOLT, PROTRUDING HD68BACB30NX8K4Y (a)BOLT, PROTRUDING HD56BACB30NX8K6Y BOLT, PROTRUDING HD3BACB30NX8K8X (a)COLLAR124BACC30AC8 COLLAR1BACC30BH10 (a)COLLAR229BACC30BH6 COLLAR3BACC30BH8 COLLAR1BACC30M10 (a)COLLAR233BACC30M6 (a)COLLAR706BACC30M8 (a)COLLAR53BACC30R6 (a)COLLAR303BACC30R8 WASHER, CSK1BACW10EG101C WASHER, COUNTERSUNK1BACW10EG61C WASHER1BACW10EG81C (a)WASHER99BACW10EG82C (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 47 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 48 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-19 RETROFIT KIT) NotesNameQTYNew Part Number -45 (b)FASTENER KIT-675U0012-45 BOLT, 100 DEG SHEAR2BACB30FN8A6 BOLT, 100 DEG HEX DR2BACB30NW10K8X BOLT, 100 DEG HEX DR6BACB30NW6K12X BOLT, 100 DEG HEX DR2BACB30NW6K14X (a)BOLT, 100 DEG HEX DR59BACB30NW6K4X BOLT, 100 DEG HEX DR21BACB30NW6K4Y BOLT, 100 DEG HEX DR8BACB30NW6K5X BOLT, 100 DEG HEX DR2BACB30NW6K6X BOLT, 100 DEG HEX DR12BACB30NW6K7X BOLT, 100 DEG HEX DR10BACB30NW6K8X BOLT, 100 DEG HEX DR2BACB30NW6K9X BOLT, 100 DEG HEX DR12BACB30NW8K12X BOLT, 100 DEG HEX DR4BACB30NW8K14X (a)BOLT, 100 DEG HEX DR80BACB30NW8K5Y (a)BOLT, 100 DEG HEX D482BACB30NW8K6 (a)BOLT, 100 DEG HEX DR86BACB30NW8K6X BOLT, 100 DEG HEX DR16BACB30NW8K6Y BOLT, 100 DEG HEX DR18BACB30NW8K8X (a)BOLT, 100 DEG HEX DR71BACB30NW8K8Y BOLT, PROTRUDING HD2BACB30NX10K8X (a)BOLT, PROTRUDING HD51BACB30NX6K3 BOLT, PROTRUDING HD2BACB30NX6K6X (a)HI-LOK143BACB30NX8K4 (a)BOLT, PROTRUDING HD71BACB30NX8K4Y BOLT, PROTRUDING HD4BACB30NX8K5Y BOLT, PROTRUDING HD44BACB30NX8K6Y BOLT, PROTRUDING HD16BACB30NX8K7Y BOLT, PROTRUDING HD2BACB30NX8K8X (a)COLLAR137BACC30AC8 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 48 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 49 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-19 RETROFIT KIT) NotesNameQTYNew Part Number -45 COLLAR2BACC30BH10 (a)COLLAR53BACC30BH6 (a)COLLAR146BACC30BH8 COLLAR2BACC30M10 (a)COLLAR105BACC30M6 (a)COLLAR608BACC30M8 COLLAR21BACC30R6 (a)COLLAR168BACC30R8 (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-21 OR 675U0012-22 RETROFIT KITS) NotesNameQTYNew Part Number -46 (b)FASTENER KIT-675U0012-46 BOLT, 100 DEG SHEAR2BACB30FN8A6 BOLT, 100 DEG HEX DR4BACB30NW10K10X BOLT, 100 DEG HEX DR16BACB30NW10K11X BOLT, 100 DEG HEX DR4BACB30NW10K12X BOLT, 100 DEG HEX DR20BACB30NW6K3X (a)BOLT, 100 DEG HEX DR82BACB30NW6K3Y (a)BOLT, 100 DEG HEX DR84BACB30NW6K4X (a)BOLT, 100 DEG HEX DR64BACB30NW6K4Y (a)BOLT, 100 DEG HEX DR75BACB30NW6K5X BOLT, 100 DEG HEX DR8BACB30NW6K6X BOLT, 100 DEG HEX DR21BACB30NW8K10X BOLT, 100 DEG HEX DR16BACB30NW8K11X BOLT, 100 DEG HEX DR6BACB30NW8K12X Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 49 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 50 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-21 OR 675U0012-22 RETROFIT KITS) NotesNameQTYNew Part Number -46 BOLT, 100 DEG HEX DR4BACB30NW8K14X BOLT, 100 DEG HEX DR3BACB30NW8K3Y BOLT, 100 DEG HEX D24BACB30NW8K4 BOLT, 100 DEG HEX DR1BACB30NW8K4X (a)BOLT, 100 DEG HEX DR125BACB30NW8K4Y BOLT, 100 DEG HEX DR8BACB30NW8K5X (a)BOLT, 100 DEG HEX DR50BACB30NW8K5Y (a)BOLT, 100 DEG HEX D421BACB30NW8K6 BOLT, 100 DEG HEX DR8BACB30NW8K6X BOLT, 100 DEG HEX DR12BACB30NW8K6Y BOLT, 100 DEG HEX DR10BACB30NW8K7 BOLT, 100 DEG HEX DR5BACB30NW8K7X (a)BOLT, 100 DEG HEX DR53BACB30NW8K7Y BOLT, 100 DEG HEX D10BACB30NW8K8 BOLT, 100 DEG HEX DR17BACB30NW8K8X (a)BOLT, 100 DEG HEX DR35BACB30NW8K9X BOLT, PROTRUDING HD4BACB30NX10K14X BOLT, PROTRUDING HD4BACB30NX10K15X BOLT, PROTRUDING HD6BACB30NX10K16X BOLT, PROTRUDING HD7BACB30NX10K17X BOLT, PROTRUDING HD2BACB30NX10K18X BOLT, PROTRUDING HD2BACB30NX10K19X BOLT, PROTRUDING HD12BACB30NX10K21X BOLT, PROTRUDING HD2BACB30NX12K16X (a)BOLT, PROTRUDING HD77BACB30NX6K3 (a)BOLT, PROTRUDING HD29BACB30NX6K3X (a)BOLT, PROTRUDING HD29BACB30NX6K4 (a)BOLT, PROTRUDING HD37BACB30NX6K4X BOLT6BACB30NX6K5 BOLT, PROTRUDING HD17BACB30NX6K5X Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 50 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 51 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-21 OR 675U0012-22 RETROFIT KITS) NotesNameQTYNew Part Number -46 BOLT14BACB30NX6K6 BOLT, PROTRUDING HD2BACB30NX6K6X BOLT, PROTRUDING HD18BACB30NX6K7X BOLT, PROTRUDING HD20BACB30NX6K8X BOLT, PROTRUDING HD4BACB30NX8K10X BOLT, PROTRUDING HD2BACB30NX8K13X BOLT, PROTRUDING HD6BACB30NX8K14X BOLT, PROTRUDING HD2BACB30NX8K15X BOLT, PROTRUDING HD6BACB30NX8K4X BOLT, PROTRUDING HD5BACB30NX8K4Y BOLT, PROTRUDING HD1BACB30NX8K5X BOLT, PROTRUDING HD7BACB30NX8K5Y BOLT, PROTRUDING HD4BACB30NX8K6X BOLT, PROTRUDING HD4BACB30NX8K7X BOLT, RADIUS LEAD-IN3BACB30WQ4K7LX BOLT, RADIUS LEAD-IN4BACB30WQ4K8LX BOLT, RADIUS LEAD-IN2BACB30WR4K8LX BOLT, RADIUS LEAD-IN2BACB30WR4K9LX BOLT, 100 DEG HEX DR6BACB30YP6K4 BOLT, 100 DEG HEX DR18BACB30YP6K5 COLLAR12BACC30AC8 (a)COLLAR41BACC30BH10 COLLAR2BACC30BH12 (a)COLLAR256BACC30BH6 (a)COLLAR32BACC30BH8 COLLAR24BACC30BL6 (a)COLLAR58BACC30M10 (a)COLLAR190BACC30M6 (a)COLLAR567BACC30M8 (a)COLLAR146BACC30R6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 51 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 52 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-21 OR 675U0012-22 RETROFIT KITS) NotesNameQTYNew Part Number -46 (a)COLLAR244BACC30R8 SELF-LOCKING NUT11BACN10HY4AC WASHER, OVERSIZE11BACW10AW4AS WASHER, OVERSIZE11BACW10AW4AST WASHER, CSK14BACW10EG101C WASHER16BACW10EG81C (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-27 OR 675U0012-28 RETROFIT KITS) NotesNameQTYNew Part Number -47 (b)FASTENER KIT-675U0012-47 BOLT, 100 DEG SHEAR2BACB30FN8A5 BOLT, 100 DEG HEX DR5BACB30NW6K10X BOLT, 100 DEG HEX DR2BACB30NW6K11X BOLT, 100 DEG HEX DR1BACB30NW6K12X BOLT, 100 DEG HEX DR1BACB30NW6K14X (a)BOLT, 100 DEG HEX DR65BACB30NW6K3X (a)BOLT, 100 DEG HEX DR66BACB30NW6K3Y (a)BOLT, 100 DEG HEX DR38BACB30NW6K4X BOLT, 100 DEG HEX DR24BACB30NW6K4Y (a)BOLT, 100 DEG HEX DR40BACB30NW6K5X BOLT, 100 DEG HEX DR15BACB30NW6K6X BOLT, 100 DEG HEX DR2BACB30NW6K7X BOLT, 100 DEG HEX DR3BACB30NW6K8X BOLT, 100 DEG HEX DR1BACB30NW6K9X BOLT, 100 DEG HEX DR10BACB30NW8K10X Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 52 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 53 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-27 OR 675U0012-28 RETROFIT KITS) NotesNameQTYNew Part Number -47 BOLT, 100 DEG HEX DR4BACB30NW8K11X BOLT, 100 DEG HEX DR2BACB30NW8K12X BOLT, 100 DEG HEX DR2BACB30NW8K14X (a)BOLT, 100 DEG HEX DR84BACB30NW8K3Y BOLT, 100 DEG HEX D24BACB30NW8K4 (a)BOLT444BACB30NW8K5 (a)BOLT, 100 DEG HEX DR88BACB30NW8K6X (a)BOLT, 100 DEG HEX DR44BACB30NW8K6Y BOLT, 100 DEG HEX DR16BACB30NW8K7 BOLT, 100 DEG HEX DR2BACB30NW8K7X BOLT, 100 DEG HEX DR8BACB30NW8K7Y BOLT, 100 DEG HEX DR8BACB30NW8K8X BOLT, 100 DEG HEX DR4BACB30NW8K9X (a)BOLT, PROTRUDING HD106BACB30NX6K3 BOLT, PROTRUDING HD17BACB30NX6K3X BOLT, PROTRUDING HD19BACB30NX6K4X BOLT19BACB30NX6K5 BOLT, PROTRUDING HD13BACB30NX6K5X BOLT, PROTRUDING HD2BACB30NX6K6X BOLT, PROTRUDING HD16BACB30NX6K7X BOLT, PROTRUDING HD9BACB30NX6K8X BOLT, PROTRUDING HD2BACB30NX8K10X BOLT, PROTRUDING HD10BACB30NX8K4Y BOLT, PROTRUDING HD2BACB30NX8K5Y BOLT, PROTRUDING HD2BACB30NX8K8X BOLT, 100 DEG HEX DR23BACB30YP6K4 COLLAR12BACC30AC8 (a)COLLAR211BACC30BH6 COLLAR4BACC30BH8 COLLAR23BACC30BL6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 53 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 54 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-27 OR 675U0012-28 RETROFIT KITS) NotesNameQTYNew Part Number -47 (a)COLLAR175BACC30M6 (a)COLLAR613BACC30M8 (a)COLLAR93BACC30R6 (a)COLLAR137BACC30R8 (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-33 OR 675U0012-34 RETROFIT KITS) NotesNameQTYNew Part Number -48 (b)FASTENER KIT-675U0012-48 BOLT, 100 DEG SHEAR2BACB30FN8A5 BOLT, 100 DEG HEX DR1BACB30NW10K11X BOLT, 100 DEG HEX DR1BACB30NW10K9X BOLT, 100 DEG HEX DR2BACB30NW6K10X BOLT, 100 DEG HEX DR1BACB30NW6K13X (a)BOLT, 100 DEG HEX DR37BACB30NW6K3X BOLT, 100 DEG HEX DR21BACB30NW6K3Y (a)BOLT, 100 DEG HEX DR48BACB30NW6K4X BOLT, 100 DEG HEX DR18BACB30NW6K5X BOLT, 100 DEG HEX DR15BACB30NW6K6X BOLT, 100 DEG HEX DR10BACB30NW6K7X BOLT, 100 DEG HEX DR5BACB30NW6K9X BOLT, 100 DEG HEX DR16BACB30NW8K10X BOLT, 100 DEG HEX DR1BACB30NW8K11X BOLT, 100 DEG HEX DR2BACB30NW8K13X BOLT, 100 DEG HEX D24BACB30NW8K4 (a)BOLT, 100 DEG HEX DR118BACB30NW8K4Y Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 54 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 55 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-33 OR 675U0012-34 RETROFIT KITS) NotesNameQTYNew Part Number -48 (a)BOLT473BACB30NW8K5 BOLT, 100 DEG HEX DR1BACB30NW8K5Y BOLT, 100 DEG HEX D24BACB30NW8K6 (a)BOLT, 100 DEG HEX DR85BACB30NW8K6X BOLT, 100 DEG HEX DR15BACB30NW8K7X (a)BOLT, 100 DEG HEX DR62BACB30NW8K7Y BOLT, 100 DEG HEX DR16BACB30NW8K8X BOLT, 100 DEG HEX DR8BACB30NW8K8Y BOLT, 100 DEG HEX DR15BACB30NW8K9X BOLT, PROTRUDING HD1BACB30NX10K11X BOLT, PROTRUDING HD2BACB30NX10K16X BOLT, PROTRUDING HD1BACB30NX10K9X BOLT, PROTRUDING HD20BACB30NX6K3 BOLT, PROTRUDING HD18BACB30NX6K4X BOLT, PROTRUDING HD2BACB30NX6K5X BOLT, PROTRUDING HD9BACB30NX6K7X BOLT, PROTRUDING HD1BACB30NX8K11X BOLT, PROTRUDING HD2BACB30NX8K16X (a)HI-LOK119BACB30NX8K3 HI-LOK16BACB30NX8K4 BOLT, PROTRUDING HD1BACB30NX8K4X (a)BOLT, PROTRUDING HD36BACB30NX8K4Y BOLT, PROTRUDING HD17BACB30NX8K5X BOLT, PROTRUDING HD15BACB30NX8K5Y BOLT, PROTRUDING HD13BACB30NX8K6X BOLT, PROTRUDING HD24BACB30NX8K6Y BOLT, PROTRUDING HD2BACB30NX8K7X BOLT, PROTRUDING HD1BACB30NX8K9X (a)COLLAR79BACC30AC8 COLLAR4BACC30BH10 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 55 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 56 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-33 OR 675U0012-34 RETROFIT KITS) NotesNameQTYNew Part Number -48 (a)COLLAR191BACC30BH6 (a)COLLAR41BACC30BH8 COLLAR2BACC30M10 (a)COLLAR140BACC30M6 (a)COLLAR685BACC30M8 COLLAR21BACC30R6 (a)COLLAR190BACC30R8 WASHER, CSK2BACW10EG101C WASHER, COUNTERSUNK1BACW10EG61C WASHER2BACW10EG81C (a)WASHER54BACW10EG82C (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-37 OR 675U0012-38 RETROFIT KITS) NotesNameQTYNew Part Number -49 (b)FASTENER KIT-675U0012-49 BOLT, 100 DEG SHEAR2BACB30FN8A5 BOLT, 100 DEG HEX DR1BACB30NW10K8X BOLT, 100 DEG HEX DR4BACB30NW6K10X BOLT, 100 DEG HEX DR4BACB30NW6K11X BOLT, 100 DEG HEX DR1BACB30NW6K12X BOLT, 100 DEG HEX DR1BACB30NW6K14X (a)BOLT, 100 DEG HEX DR68BACB30NW6K3X (a)BOLT, 100 DEG HEX DR53BACB30NW6K3Y (a)BOLT, 100 DEG HEX DR61BACB30NW6K4X (a)BOLT, 100 DEG HEX DR37BACB30NW6K5X Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 56 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 57 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-37 OR 675U0012-38 RETROFIT KITS) NotesNameQTYNew Part Number -49 BOLT, 100 DEG HEX DR16BACB30NW6K6X BOLT, 100 DEG HEX DR7BACB30NW6K7X BOLT, 100 DEG HEX DR10BACB30NW6K8X BOLT, 100 DEG HEX DR2BACB30NW6K9X BOLT, 100 DEG HEX DR6BACB30NW8K10X BOLT, 100 DEG HEX DR8BACB30NW8K11X BOLT, 100 DEG HEX DR2BACB30NW8K12X BOLT, 100 DEG HEX DR2BACB30NW8K14X BOLT, 100 DEG HEX D24BACB30NW8K4 (a)BOLT, 100 DEG HEX DR96BACB30NW8K4Y (a)BOLT473BACB30NW8K5 (a)BOLT, 100 DEG HEX DR62BACB30NW8K5X (a)BOLT, 100 DEG HEX DR132BACB30NW8K5Y BOLT, 100 DEG HEX D24BACB30NW8K6 (a)BOLT, 100 DEG HEX DR31BACB30NW8K6X BOLT, 100 DEG HEX DR8BACB30NW8K7X BOLT, 100 DEG HEX DR24BACB30NW8K7Y BOLT, 100 DEG HEX DR9BACB30NW8K8X (a)BOLT, 100 DEG HEX DR44BACB30NW8K8Y BOLT, 100 DEG HEX DR12BACB30NW8K9X BOLT, PROTRUDING HD1BACB30NX10K8X BOLT, PROTRUDING HD20BACB30NX6K3 (a)BOLT, PROTRUDING HD32BACB30NX6K3X BOLT, PROTRUDING HD7BACB30NX6K4X BOLT, PROTRUDING HD1BACB30NX6K5X BOLT, PROTRUDING HD11BACB30NX6K6X BOLT, PROTRUDING HD8BACB30NX6K8X (a)HI-LOK119BACB30NX8K3 HI-LOK16BACB30NX8K4 (a)BOLT, PROTRUDING HD68BACB30NX8K4Y Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 57 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 58 Group 2: Kit 675U0012 (FOR USE WITH THE 675U0012-37 OR 675U0012-38 RETROFIT KITS) NotesNameQTYNew Part Number -49 BOLT, PROTRUDING HD6BACB30NX8K5Y (a)BOLT, PROTRUDING HD50BACB30NX8K6Y BOLT, PROTRUDING HD3BACB30NX8K8X (a)COLLAR124BACC30AC8 COLLAR1BACC30BH10 (a)COLLAR220BACC30BH6 COLLAR3BACC30BH8 COLLAR1BACC30M10 (a)COLLAR214BACC30M6 (a)COLLAR673BACC30M8 (a)COLLAR53BACC30R6 (a)COLLAR299BACC30R8 WASHER, CSK1BACW10EG101C WASHER, COUNTERSUNK1BACW10EG61C WASHER1BACW10EG81C (a)WASHER99BACW10EG82C (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-17 RETROFIT KIT) NotesNameQTYNew Part Number -50 (b)FASTENER KIT-675U0012-50 BOLT, 100 DEG SHEAR2BACB30FN8A6 BOLT, 100 DEG HEX DR2BACB30NW10K8X BOLT, 100 DEG HEX DR6BACB30NW6K12X BOLT, 100 DEG HEX DR2BACB30NW6K14X (a)BOLT, 100 DEG HEX DR59BACB30NW6K4X Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 58 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 59 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-17 RETROFIT KIT) NotesNameQTYNew Part Number -50 BOLT, 100 DEG HEX DR21BACB30NW6K4Y BOLT, 100 DEG HEX DR8BACB30NW6K5X BOLT, 100 DEG HEX DR2BACB30NW6K6X BOLT, 100 DEG HEX DR12BACB30NW6K7X BOLT, 100 DEG HEX DR10BACB30NW6K8X BOLT, 100 DEG HEX DR2BACB30NW6K9X BOLT, 100 DEG HEX DR12BACB30NW8K12X BOLT, 100 DEG HEX DR4BACB30NW8K14X (a)BOLT, 100 DEG HEX DR80BACB30NW8K5Y (a)BOLT, 100 DEG HEX D421BACB30NW8K6 (a)BOLT, 100 DEG HEX DR86BACB30NW8K6X BOLT, 100 DEG HEX DR16BACB30NW8K6Y BOLT, 100 DEG HEX DR18BACB30NW8K8X (a)BOLT, 100 DEG HEX DR71BACB30NW8K8Y BOLT, PROTRUDING HD2BACB30NX10K8X (a)BOLT, PROTRUDING HD49BACB30NX6K3 (a)BOLT, PROTRUDING HD132BACB30NX6K4 BOLT, PROTRUDING HD2BACB30NX6K6X (a)BOLT, PROTRUDING HD71BACB30NX8K4Y BOLT, PROTRUDING HD4BACB30NX8K5Y (a)BOLT, PROTRUDING HD44BACB30NX8K6Y BOLT, PROTRUDING HD16BACB30NX8K7Y BOLT, PROTRUDING HD2BACB30NX8K8X (a)COLLAR137BACC30AC8 COLLAR2BACC30BH10 (a)COLLAR183BACC30BH6 COLLAR2BACC30BH8 COLLAR2BACC30M10 (a)COLLAR105BACC30M6 (a)COLLAR546BACC30M8 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 59 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT ### Page 60 Group 1: Kit 675U0012 (FOR USE WITH THE 675U0012-17 RETROFIT KIT) NotesNameQTYNew Part Number -50 COLLAR21BACC30R6 (a)COLLAR168BACC30R8 (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fasteners part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits. 2. Parts and Materials Supplied by the Operator The following parts or materials are necessary to do the change in this service bulletin. Parts and materials in the manuals given in Paragraph 1.J., References, can also be necessary. Examine operator part and material supply to make sure all necessary parts and materials are available. NotesNameQTYPart Number / Specification (b)CORROSION INHIBITING COM- POUND (CIC) (a)BMS 3-29 or BMS 3-35 (b)PRIMER(a)BMS 10-11 Type 1 (b)PRIMER(a)BMS 10-79 Type 3 (b)SEALANT(a)BMS 5-95 -ALUMINUM SHIMS(a)BACS40R (c)CHEMICAL CONVERSION COAT- ING (a)TYPE 2, CLASS A (a) Quantity is as necessary. (b) Refer to the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data. (c) Refer to SOPM 20-43-03 for material sources. 3. Parts Modified and Reidentified None. 4. Parts Removed and Not Replaced None. Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: May 19, 2016 747-53A2878 60 of 109 BOEING SERVICE BULLETIN 747-53A2878 ALERTALERT The text continues at https://openairdocs.org/service-documents/boeing/747-53a2878/file/097c53dd1e61.md?from=61 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.