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Commercial Airplanes 747 Service Bulletin ALERT Number: 747-53A2844 Original Issue: September 15, 2011 Revision 1: July 30, 2012 ATA System: 5300 SUBJECT: FUSELAGE - Station 1920 Splice Clip Fasteners Inspection Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.
9E991ECCN:
BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2011 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Unpublished Work.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, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, 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. BOEING is a trademark of Boeing Management Company.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 1 of 41
3.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 2 of 41 BOEING SERVICE BULLETIN 747-53A2844
ALERTALERT
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 ........................................ 1 2 B. Concurrent Requirements ...................................... 1 2 C. Reason ................................................ 1 2 D. Description .............................................. 1 2 E. Compliance .............................................. 1 3 F. Approval ............................................... 1 6 G. Manpower .............................................. 1 6 H. Weight and Balance Changes .................................... 1 7 I. Electrical Load Data ......................................... 1 7 J. References .............................................. 1 7
1. Existing Data: ......................................... 1 7
2. Data Supplied with this Service Bulletin: ........................... 1 7
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 1 8 K. Publications Affected ........................................ 1 8 L. Interchangeability and Intermixability of Parts ........................... 1 8 M. Software Accomplishment Summary ................................ 1 8
2. MATERIAL INFORMATION ........................................ 1 9 A. Material - Price and Availability ................................... 1 9 B. Industry Support Information .................................... 1 9 C. Parts Necessary for Each Airplane ................................. 1 9
1. Kits/Parts ............................................ 1 9
2. Parts and Materials Supplied by the Operator ........................ 1 9
3. Parts Modified and Reidentified ................................ 1 9
4. Parts Removed and Not Replaced .............................. 1 9 D. Parts Necessary to Change Spares ................................. 1 9 E. Special Tooling - Price and Availability ............................... 1 9 F. Special Tooling Necessary to do this Service Bulletin ....................... 2 0
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 2 1 A. GENERAL INFORMATION ..................................... 2 1 B. WORK INSTRUCTIONS ....................................... 2 2 FIGURE 1: SPLICE CLIP 65B17957-3 FASTENER INSTALLATION - INSPECTION .......... 2 4 FIGURE 2: INSPECTIONS AT BODY STATION 1920 AND STRINGER 4L ............... 3 0 FIGURE 3: AUX SILL OUTER CHORD TEE - INSPECTION ....................... 3 4 FIGURE 4: SPLICE ANGLE FASTENER - INSTALLATION ....................... 3 7 FIGURE 5: TYPICAL CRACK REMOVAL ................................. 4 0 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 3 of 41 BOEING SERVICE BULLETIN 747-53A2844
ALERTALERT
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 4 of 41 BOEING SERVICE BULLETIN 747-53A2844
ALERTALERT
BLANK PAGE
Commercial Airplanes 747 Service Bulletin ALERT Revision Transmittal SheetNumber: 747-53A2844Original Issue: September 15, 2011 Revision 1: July 30, 2012 ATA System: 5300 SUBJECT: FUSELAGE - Station 1920 Splice Clip Fasteners Inspection 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 in accordance with the original issue of this service bulletin.
REASON FOR REVISION This revision is sent to clarify the Work Instructions, Figures and Step Table to be consistent with the information in the Compliance Paragraph.
Illustrations have been changed in the Summary Art and Figures to meet current standards and added view callouts for clarity.
These sections were changed:
1. In Paragraph 1.D., Description, changed 3.d.
2. Added Paragraph 1.M., Software Accomplishment Summary.
3. In Paragraph 3.B., Work Instructions, changed 4.a.(4).
4. In Figure 2, changed as follows:
a. Changed sheet 2 to add bubble 5.
b. Changed Step Table to add step 5 and foot note (e).
5. In Figure 3, changed sheet 3, to remove bubble 3 to match Step Table.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location of important changes.
Pages with no vertical lines have no important changes.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 5 of 41
REVISION HISTORY September 15, 2011Original Issue:
July 30, 2012Revision 1:
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 6 of 41 BOEING SERVICE BULLETIN 747-53A2844
ALERTALERT
Commercial Airplanes 747 Service Bulletin ALERT SummaryNumber: 747-53A2844Original Issue: September 15, 2011 Revision 1: July 30, 2012 ATA System: 5300 SUBJECT: FUSELAGE - Station 1920 Splice Clip Fasteners Inspection
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 An airplane that was undergoing Boeing Converted Freighter conversion was missing fasteners on the Station 1920 Splice Clip as part of the new converted components. This discrepancy was found after 23 aircraft had been delivered and the possibility of this discrepancy exists on already delivered airplanes. A one time inspection of the station 1920 splice clip will determine if the fasteners are missing, and installation of fasteners is required.
Installation of the missing fasteners, if required will restore structural integrity and minimize the possibility of crack growth. If not corrected, undetected missing fasteners at the station 1920 splice clip and possible crack growth can potentially lead to a significant loss of load carrying capacity of the structural detail resulting in the inability to sustain limit load or potentially result in a decompression event.
ACTION This service bulletin provides instructions to do as follows:
1. Do General Visual Inspection (GVI) of the station 1920 Splice Clip for correct fastener installation and do the work that follows based on conditions found:
2. Condition 1 - Correct Fasteners Installed:
a. No further work require.
3. Condition 2 - Incorrect Fasteners Found OR Condition 3 - No Fasteners Found:
a. Do a Detailed Inspection (DI) of Frame 1920 Inboard Chord Splice Angle and the parts attached to the angle for any crack.
b. Do a DI of the cutout hole in the Sill Web and the attached parts for any crack.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 7 of 41
c. Do a General Visual Inspection (GVI) of the Shear Tie and its fasteners for any crack.
d. Do a DI of the Shear Clip, Aux Sill Outer Chord Tee and the Splice Angle and their fasteners for any crack.
e. Do Surface High Frequency Eddy Current (HFEC) inspection of the Radii of the Tee along 5" either side of Frame at station 1920 for cracks.
f. Do Surface HFEC inspection around fastener heads common to the Tee for cracks.
4. Condition 4 - No Crack Found:
a. Install fasteners of the Splice Angle.
5. Condition 5 - Any Crack Found:
a. Remove any crack found.
b. Repair in accordance with Structural Repair Manual (SRM).
c. Do open hole HFEC inspections of all fasteners common to the repair(s) for cracks. If any crack found, repair in accordance with Structural Repair Manual (SRM).
d. Install fasteners of the Splice Angle.
EFFECTIVITY 747-400 Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s).
COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of 11/19/2007. Please refer to Paragraph
2.B., Industry Support Information.
MANPOWER Elapsed HoursTotal Task HoursAirplanes
5.05.0747-400
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 8 of 41 BOEING SERVICE BULLETIN 747-53A2844
ALERTALERT
BOEING SERVICE BULLETIN 747-53A2844
ALERT ALERT Refer to Paragraph 2.A., Material - Price and Availability STA 1920 S-4L STA 1920 STATION 1920 SPLICE CLIP FASTENERS INSPECTION 2062270 Original Issue: September 15, 2011 Revision 1: July 30, 2012 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 110 6
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 10 of 41 BOEING SERVICE BULLETIN 747-53A2844
ALERTALERT
BLANK PAGE
Commercial Airplanes 747 Service Bulletin ALERT Number: 747-53A2844 Original Issue: September 15, 2011 Revision 1: July 30, 2012 ATA System: 5300 SUBJECT: FUSELAGE - Station 1920 Splice Clip Fasteners Inspection
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 Refer to Service Bulletin Index Document D6-30300 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplane(s) shown below.
DESCRIPTIONCONFIGURATIONGROUP 747-400 airplanes that are Boeing Converted Freightters (BCF)-1 Airplane Models:
747-400 GroupVariable Number 1RT456 1RT501 1RT506 - RT510 1RT513 1RT516 1RT518 1RT520 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 11 of 41
GroupVariable Number 1RT528 1RT572 - RT575 1RT655 - RT657 1RT751 1RT781 - RT782 1RT967
2. Spares Affected None.
B. Concurrent Requirements None.
C. Reason An airplane that was undergoing Boeing Converted Freighter conversion was missing fasteners on the Station 1920 Splice Clip as part of the new converted components. This discrepancy was found after 23 aircraft had been delivered and the possibility of this discrepancy exists on already delivered airplanes.
A one time inspection of the station 1920 splice clip will determine if the fasteners are missing, and installation of fasteners is required. Installation of the missing fasteners, if required will restore structural integrity and minimize the possibility of crack growth. If not corrected, undetected missing fasteners at the station 1920 splice clip and possible crack growth can potentially lead to a significant loss of load carrying capacity of the structural detail resulting in the inability to sustain limit load or potentially result in a decompression event.
Revision 1 is sent to clarify the Work Instructions, Figures and Step Table to be consistent with the information in the Compliance Paragraph.
Illustrations have been changed in the Summary Art and Figures to meet current standards and added view callouts for clarity.
D. Description This service bulletin provides instructions to do as follows:
1. Do General Visual Inspection (GVI) of the station 1920 Splice Clip for correct fastener installation and do the work that follows based on conditions found:
2. Condition 1 - Correct Fasteners Installed:
a. No further work require.
3. Condition 2 - Incorrect Fasteners Found OR Condition 3 - No Fasteners Found:
a. Do a Detailed Inspection (DI) of Frame 1920 Inboard Chord Splice Angle and the parts attached to the angle for any crack.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 15, 2011 747-53A2844Revision 1: July 30, 2012 12 of 41 BOEING SERVICE BULLETIN 747-53A2844