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Commercial Airplanes 747 Service Bulletin Number: 747-53-2721 Original Issue: May 28, 2009 Revision 3: June 25, 2013 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Install Rub Strips at Vertical Fin Seal to Fuselage Interface 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 © 2009 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Unpublished Work.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 28, 2009 747-53-2721Revision 3: June 25, 2013 1 of 140
4.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 2 of 140 BOEING SERVICE BULLETIN 747-53-2721
BLANK PAGE
Table of Contents
Revision Transmittal Sheet5
Summary7
1. PLANNING INFORMATION ........................................ 1 1 A. Effectivity ............................................... 1 1
1. Airplanes ............................................ 1 1
2. Spares Affected ........................................ 2 0 B. Concurrent Requirements ...................................... 2 0 C. Reason ................................................ 2 0 D. Description .............................................. 2 2 E. Compliance .............................................. 2 3 F. Approval ............................................... 2 9 G. Manpower .............................................. 2 9 H. Weight and Balance Changes .................................... 3 1 I. Electrical Load Data ......................................... 3 1 J. References .............................................. 3 1
1. Existing Data: ......................................... 3 1
2. Data Supplied with this Service Bulletin: ........................... 3 2
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 3 3 K. Publications Affected ........................................ 3 3 L. Interchangeability and Intermixability of Parts ........................... 3 3 M. Software Accomplishment Summary ................................ 3 3
2. MATERIAL INFORMATION ........................................ 3 5 A. Material - Price and Availability ................................... 3 5 B. Industry Support Information .................................... 3 6 C. Parts Necessary for Each Airplane ................................. 3 6
1. Kits/Parts ............................................ 3 6
2. Parts and Materials Supplied by the Operator ........................ 4 8
3. Parts Modified and Reidentified ................................ 4 8
4. Parts Removed and Not Replaced .............................. 4 8 D. Parts Necessary to Change Spares ................................. 4 9 E. Special Tooling - Price and Availability ............................... 4 9 F. Special Tooling Necessary to do this Service Bulletin ....................... 4 9
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 5 1 A. GENERAL INFORMATION ..................................... 5 1 B. WORK INSTRUCTIONS ....................................... 5 3 FIGURE 1: PREPARE FOR THE FORWARD RUB STRIP INSTALLATION [Group 1] ......... 6 5 FIGURE 2: PREPARE FOR THE AFT RUB STRIP INSTALLATION ................... 6 8 FIGURE 3: FORWARD RUB STRIP INSTALLATION [Group 1] ..................... 7 1 FIGURE 4: AFT RUB STRIP INSTALLATION ............................... 7 9 FIGURE 5: DELETED ............................................ 8 6 FIGURE 6: DELETED ............................................ 8 7 FIGURE 7: PREPARE FOR THE FORWARD RUB STRIP INSTALLATION [Group 2] ......... 8 8 FIGURE 8: FORWARD RUB STRIP INSTALLATION [Group 2] ..................... 9 2 FIGURE 9: PREPARE FOR THE FORWARD RUB STRIP INSTALLATION [Group 3] ........ 1 0 1 FIGURE 10: FORWARD RUB STRIP INSTALLATION [Group 3] .................... 1 0 6 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 3 of 140 BOEING SERVICE BULLETIN 747-53-2721
FIGURE 11: ZONE 1 - FULL-LENGTH REPAIR - LEFT SIDE - POST REPAIR INSPECTION [Group 1] . 117 FIGURE 12: ZONE 1 - FULL-LENGTH REPAIR - RIGHT SIDE - POST REPAIR INSPECTION [Group 1] ................................................. 1 2 3 FIGURE 13: ZONE 1 - FULL-LENGTH REPAIR - LEFT SIDE - POST REPAIR INSPECTION [Group 2] . 129 FIGURE 14: ZONE 1 - FULL-LENGTH REPAIR - RIGHT SIDE - POST REPAIR INSPECTION [Group 2] ................................................. 1 3 5 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 4 of 140 BOEING SERVICE BULLETIN 747-53-2721
Commercial Airplanes 747 Service Bulletin Revision Transmittal SheetNumber: 747-53-2721Original Issue: May 28, 2009 Revision 3: June 25, 2013 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Install Rub Strips at Vertical Fin Seal to Fuselage Interface This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on the airplane(s) changed or inspected in accordance with the original issue, Revision 1 or Revision 2 of this service bulletin.
Federal Aviation Administration (FAA) Airworthiness Directive AD 2009-14-02, is related to this service bulletin.
REASON FOR REVISION This revision is sent to clarify the post modification and post repair inspections requirements and to transfer post repair inspection instructions from the Structural Repair Manual (SRM) and Repair Assessment Guidelines (RAG) to this service bulletin for airplanes that have the zone 1 full length repair installed.
These sections were changed:
1. Summary, Background: A fleet team digest reference and a planning table is added.
2. Summary, Action: A post repair inspection is added.
3. Paragraph 1.C., Reason: Clarify post modification and post repair inspections requirements and transferred post repair inspection instructions from the Structural Repair Manual (SRM) and Repair Assessment Guidelines (RAG) for airplanes that have the zone 1 full length repair installed.
4. Paragraph 1.D., Description: A post repair inspection is added.
5. Paragraph 1.E., Compliance: Repair Assessment Guidelines (RAG) and a Structural Repair Manual (SRM) reference is added. Table 2 title is changed. Table 2 is updated to include new Zone 1 post repair inspections and the compliance for RAG and SRM inspections has been removed from Table 2 and Table 3.
6. Paragraph 1.G., Manpower: Manpower times for Zone 1 post repair inspections is added.
7. Paragraph 1.K., Publications Affected, Damage Tolerance Based Structural Inspections: New statements added.
8. Paragraph 1.M., Software Accomplishment Summary: Software accomplishment summary section is added.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 5 of 140
9. Paragraph 2.A., Material - Price and Availability: Repair Kit zone names have been changed.
10. Paragraph 2.C., Parts Necessary For Each Airplane: Corrected the zone names for kit numbers.
11. Paragraph 3.A., General Information: The notes section is updated.
12. Paragraph 3.B., Work Instructions: Are updated to include new Zone 1 post repair inspections.
13. FIGURE 11, FIGURE 12, FIGURE 13 and FIGURE 14: Zone 1 post repair inspections are added.
The data given in Information Notice 747-53-2721 IN 02 is included in this revision.
The data given in Information Notice 747-53-2721 IN 03 is included in this revision.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity and format changes, to show the location of all content changes.
Pages with no vertical lines have no important changes.
REVISION HISTORY May 28, 2009Original Issue:
June 24, 2010Revision 1:
March 17, 2011Revision 2:
June 25, 2013Revision 3:
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 6 of 140 BOEING SERVICE BULLETIN 747-53-2721
Commercial Airplanes 747 Service Bulletin SummaryNumber: 747-53-2721Original Issue: May 28, 2009 Revision 3: June 25, 2013 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Install Rub Strips at Vertical Fin Seal to Fuselage Interface
CONCURRENT REQUIREMENTS The service bulletin listed below must be done before or at the same time as this service bulletin:
DescriptionService BulletinCompany Inspects and repairs skin damage to the fuselage at the vertical stabilizer seal interface.
747-53A2478 Revision 1, Revision 2 or Revision 3 Boeing
BACKGROUND This service bulletin gives instructions to install corrosion resistant steel (CRES) rub strips on the skin on the aft fuselage at the vertical fin blade seal to fuselage interface. Installation of these rub strips will prevent skin wear damage which results in thinning of the skin and could lead to cracking. Undetected cracking in the pressurized Section 46 could reach sufficient length to cause in-flight depressurization of the airplane.
Operators have reported skin wear damage beyond allowable limits at the vertical stabilizer blade seal to fuselage interface in Section 46 and Section 48. Service Bulletin 747-53A2478 was issued to provide repeat inspection and repair instructions for this skin wear.
Accomplishment of the rub strip installation will protect the skin in the affected area from wear damage at the vertical fin blade seal interface, and terminate the repeat inspection requirements of Service Bulletin 747-53A2478.
Repeat inspection requirements for installed rub strips is given in this service bulletin. If the rub strip installation given in this service bulletin is not accomplished, operators will be required to continue to do inspections in accordance with Service Bulletin 747-53A2478 and AD 2009-14-02.
As a part of a service bulletin validation program, this change was completed on airplane RM803 by Service Bulletin 747-53-2721 Original Issue before the release of Revision 1 of this service bulletin. The change completed on airplane RM803 by Service Bulletin 747-53-2721 Original Issue is equivalent to Revision 1 of this service bulletin. Airplane RM803 has the configuration of a Group 1 airplane.
Boeing Service Related Problem (SRP) 747-SRP-53-0296 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 747 FTD 53-06007 is related to this service bulletin.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 7 of 140
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 Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedNoPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/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 NoSpecial Tooling Required ACTION (PRR 85901-83S) This service bulletin installs new CRES rub strips to the skin at the vertical stabilizer fin blade seal and fuselage interface.
For the actions in this service bulletin, the areas where rub strips are installed are divided into the following zones:
– Zone 1: STA 2280 to STA 2360 (Section 46) (STA 2072 to STA 2360 on Group 2 airplanes) – Zone 2: STA 2360 to STA 2397 (Section 48) – Zone 3: STA 2397 to STA 2417 (Section 48) – Zone 4: STA 2517 to STA 2557 (Section 48) – Zone 5: STA 2557 to STA 2598 (Section 48) – Zone 6: STA 2598 to STA 2638 (Section 48) Do post repair and post modification inspections in accordance with Paragraph 1.E., Compliance or if local repairs were installed, do additional post modification and post repair inspections of the repaired areas in accordance with the applicable Repair Assessment Guidelines (RAG) and/or Structural Repair Manual (SRM).
EFFECTIVITY 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SP and 747SR series airplanes. Refer to Paragraph 1.A.1., Airplanes for the list of affected airplanes.
COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directive AD 2009-14-02 is related to this service bulletin.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 8 of 140 BOEING SERVICE BULLETIN 747-53-2721
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes, inspection, and/or repair procedures given in this service bulletin.
MANPOWER Work Package 1 - Forward Rub Strip Installation:
Elapsed HoursTotal Task HoursAirplanes
18.7538.00747 Work Package 2 - Aft Rub Strip Installation:
Elapsed HoursTotal Task HoursAirplanes
12.7533.25747 Zone 1 Post Repair Inspection Elapsed HoursTotal Task HoursAirplanes
18.0036.00Group 1
20.0053.00Group 2 Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 9 of 140 BOEING SERVICE BULLETIN 747-53-2721
BOEING SERVICE BULLETIN 747-53-2721
INSTALL RUB STRIPS AT
VERTICAL FIN SEAL TO
FUSELAGE INTERFACE STA 2628 STA 2521 STA 2360 STA 12413 STA I 2280 BULKHEAD AFT PRESSURE GROUP 1 AIRPLANE SHOWN GROUP 2 - 3 SIMILAR 1662857 Original Issue: May 28, 2009 Revision 3: June 25, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 747-53-2721 Work - See page 1 for details. 10 of 140
Commercial Airplanes 747 Service Bulletin Number: 747-53-2721 Original Issue: May 28, 2009 Revision 3: June 25, 2013 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Install Rub Strips at Vertical Fin Seal to Fuselage Interface
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index Document D6-30300, Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
On airplane line number 1385, rub strips were installed in production by Rapid Revision RR47040-92.
This service bulletin is for the airplanes shown below. Refer to PRR 85901-83S for data about this change.
DESCRIPTIONCONFIGURATIONGROUP 747 series airplanes line number 1-1384 and 1386-1419, except 747SP and 747 LCF airplanes.
-1 All 747SP airplanes.-2 747 LCF airplanes.-3 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 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 11 of 140
GroupVariable Number 1RA245 - RA246 1RA251 - RA266 1RA301 - RA318 1RA351 - RA360 1RA369 - RA373 1RA401 - RA418 1RA501 - RA502 1RA521 - RA528 1RA532 - RA548 1RA551 - RA552 1RA559 - RA561 1RA581 - RA582 1RA585 1RA601 - RA602 1RA631 - RA635 1RA651 - RA652 1RA671 - RA677 1RA701 - RA702 1RA721 - RA731 1RA741 - RA745 1RA749 - RA750 1RA761 - RA762 1RA781 - RA784 1RA901 - RA916 1RB001 - RB016 1RB041 - RB044 1RB071 - RB075 1RB101 - RB102 1RB411 - RB413 1RB421 1RB601 - RB607 1RB681 - RB697 1RB711 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 28, 2009 747-53-2721Revision 3: June 25, 2013 12 of 140 BOEING SERVICE BULLETIN 747-53-2721