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Commercial Airplanes 757 Service Bulletin
SPECIAL ATTENTION Number: 757-24-0106 Original Issue: September 30, 2004 Revision 5: July 30, 2009 ATA System: 2420 SUBJECT: ELECTRICAL POWER - AC Generation - Inspection and Clamp Change of Power Feeder Wire Bundles to Prevent Chafing on the Number 5 and 6 Auxiliary Slat Track.
Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 730-774). 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BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2004 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.
This document includes proprietary information owned by The Boeing Company and/or one or more third parties.
Treatment of the document and the information it contains is governed by contract with Boeing. For more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and the Boeing livery 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BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 1 of 27
5.0
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 2 of 27 BOEING SERVICE BULLETIN 757-24-0106
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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 4 E. Compliance .............................................. 1 5 F. Approval ............................................... 1 5 G. Manpower .............................................. 1 5 H. Weight and Balance Changes .................................... 1 6 I. Electrical Load Data ......................................... 1 6 J. References .............................................. 1 6
1. Existing Data: ......................................... 1 6
2. Data supplied with this Service Bulletin: ........................... 1 6
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 1 6 K. Publications Affected ........................................ 1 6 L. Interchangeability and Intermixability of Parts ........................... 1 6
2. MATERIAL INFORMATION ........................................ 1 7 A. Material - Price and Availability ................................... 1 7 B. Industry Support Information .................................... 1 7 C. Parts Necessary For Each Airplane ................................. 1 7
1. Kits/Parts: ........................................... 1 7
2. Parts and Materials Supplied by the Operator: ........................ 1 7
3. Parts Modified and Reidentified: ............................... 1 8
4. Parts Removed and Not Replaced: .............................. 1 8 D. Parts Necessary to Change Spares ................................. 1 8 E. Special Tooling - Price and Availability ............................... 1 8 F. Special Tooling Necessary to do this Service Bulletin ....................... 1 8
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 1 9 A. GENERAL INFORMATION ..................................... 1 9 B. WORK INSTRUCTIONS ....................................... 2 0 FIGURE 1: LEFT WING POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.
.................................................. 2 2 FIGURE 2: RIGHT WING POWER FEEDER WIRE INSPECTION AND SUPPORT CLAMP INSTALLATION.
.................................................. 2 5 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 3 of 27 BOEING SERVICE BULLETIN 757-24-0106
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 4 of 27 BOEING SERVICE BULLETIN 757-24-0106
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Commercial Airplanes 757 Service Bulletin
SPECIAL ATTENTION Revision Transmittal SheetNumber: 757-24-0106Original Issue: September 30, 2004 Revision 5: July 30, 2009 ATA System: 2420 SUBJECT: ELECTRICAL POWER - AC Generation - Inspection and Clamp Change of Power Feeder Wire Bundles to Prevent Chafing on the Number 5 and 6 Auxiliary Slat Track.
This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on airplanes changed as shown in the Revision 4 of this service bulletin.
REASON FOR REVISION Revision 5 is sent to add affected maintenance Zones and add an optional blind rivet NAS1398B8AB2 to plug the open hole in the bracket.
These sections were changed:
1. Paragraph 1.D., Description: Added Affected Maintenance Zones.
2. Paragraph 1.F., Approval: Changed the paragraph letter for the Alternate Method of Compliance.
3. Paragraph 2.C.2., Parts and Materials Supplied by the Operator: Added optional blind rivet, part number NAS1398B8AB2. Also corrected the part number of the collar to read BACC30M8U.
4. Paragraph 3.B.7. and 3.B.8., Work Instructions: Added the Inspection Location.
5. Figure 1, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part numbers, and corrected the part number of the collar to read BACC30M8U. Added note (f) at the bottom of the step table.
6. Figure 2, Step 4: Added blind rivet, part number NAS1398B8AB2, added optional bolt and nut part numbers, and corrected the part number of the collar to read BACC30M8U. Added note (f) at the bottom of the step table.
The data given in Information Notice 757-24-0106 IN 01 is included in this revision.
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.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 5 of 27
REVISION HISTORY September 30, 2004Original Issue:
June 23, 2005Revision 1:
April 20, 2006Revision 2:
October 03, 2006Revision 3:
January 04, 2008Revision 4:
July 30, 2009Revision 5:
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 6 of 27 BOEING SERVICE BULLETIN 757-24-0106
Commercial Airplanes 757 Service Bulletin
SPECIAL ATTENTION SummaryNumber: 757-24-0106Original Issue: September 30, 2004 Revision 5: July 30, 2009 ATA System: 2420 SUBJECT: ELECTRICAL POWER - AC Generation - Inspection and Clamp Change of Power Feeder Wire Bundles to Prevent Chafing on the Number 5 and 6 Auxiliary Slat Track.
BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.
CONCURRENT REQUIREMENTS None.
BACKGROUND The changes in this service bulletin will prevent possible chafe damage between the number 5 and 6 inboard slat auxiliary tracks and the power feeder wire bundles W3312 and W3412 or W5784 and W5786. The attach points for the support clamps for the power feeder wires in each wing are changed to get the necessary clearance for the power feeder wires.
One operator told Boeing they found that the power feeder wire bundle had chafed against the number 6 slat auxiliary track at Front Spar Station (FSS) 148.90. On one airplane two of the three phases of the power feeder wire bundle were worn through to the conductor. The electrical cables had arced against the auxiliary slat track and caused damage to the auxiliary slat track and power feeder wire. This condition can result in a possible ignition source for leaked flammable fluids or a generator trip with loss of power from that generator.
The attach bracket for the power feeder wire bundle clamp at FSS 148.90 has two holes where the power feeder wire bundle can be installed. The support clamp for the damaged power feeder wires was attached to the upper hole of the attach bracket. It was found that the lower hole of the attach bracket can be used to give sufficient clearance between the power feeder wire bundle and the auxiliary slat track.
This service bulletin gives instructions to do a general visual inspection of the power feeder wire bundles W3312 and W3412 or W5784 and W5786 for chafe damage and to make sure that the support clamps are correctly installed. Support clamps for the power feeder wire bundles are found in the left and right wings at FSS 148.90, near the number 5 and 6 inboard auxiliary slat tracks. Operators should now use the lower hole of the 287N1401-306 bracket to attach the power feeder wire bundle. Rivets are installed in the open holes that are not used in the brackets to prevent use of the holes. If Service Letter 757-SL-24-072 has been done, install rivets in the open holes that are not used in the attach brackets. A similar change was made in production on line number 1024 and subsequent airplanes.
The related 757-200 and 757-200PF bulletin is 757-24-0105.
Service Letter 757-SL-24-072 is also related to this service bulletin.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 7 of 27
Boeing Service Related Problem (SRP) 757-SRP-24-0109 is related to this service bulletin.
ACTION Get access to the support clamps for the power feeder wire bundles W3312 and W3412 or W5784 and W5786 at FSS148.90 in the left and right wings. Do a general visual inspection of each power feeder wire bundle. Repair damaged wires as necessary. Make sure that the support clamps for the left and right power feeder wire bundles are installed in the lower hole of the 287N1401-306 support brackets. Rivet plug the holes in the bracket that are not used to prevent use, this includes airplanes that have done Service Letter 757-SL-24-072.
EFFECTIVITY All 757-300 Airplanes. Refer to Service Bulletin Paragraph 1.A.1 for effectivity.
COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directive FAA AD 2007-03-01 is related to this service bulletin.
Boeing recommends that operators do the changes in this service bulletin in 24 months or less from the initial release date of this service bulletin.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of September 5, 2003. Please refer to Paragraph 2.B., Industry Support Information.
MANPOWER Elapsed HoursTotal Task HoursAirplanes
4.257.5All
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 8 of 27 BOEING SERVICE BULLETIN 757-24-0106
BOEING SERVICE BULLETIN 757-24-0106
INSPECT THE WIRE BUNDLE AT
THIS LOCATION FOR DAMAGE AND REPAIR IF NECESSARY. CHANGE THE POSITION OF THE CLAMP.
ISS
150.74 → FWD
RIGHT WING SHOWN (LEFT WING EQUIVALENT) ISS
119.21 Original Issue: September 30, 2004 Revision 5: July 30, 2009 757-24-0106 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 27
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 10 of 27 BOEING SERVICE BULLETIN 757-24-0106
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Commercial Airplanes 757 Service Bulletin
SPECIAL ATTENTION Number: 757-24-0106 Original Issue: September 30, 2004 Revision 5: July 30, 2009 ATA System: 2420 SUBJECT: ELECTRICAL POWER - AC Generation - Inspection and Clamp Change of Power Feeder Wire Bundles to Prevent Chafing on the Number 5 and 6 Auxiliary Slat Track.
BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index Document D624N001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplanes shown below.
DESCRIPTIONCONFIGURATIONGROUP 757-300 Airplanes with Wire Bundle W3312 and W3412.-1 757-300 Airplanes with Wire Bundle W5784 and W5786-2 Airplane Models:
757-300 GroupVariable Number 1NL001 - NL002 1NL006 - NL015 2NL101 - NL104 2NL141 2NL601 - NL607 1NU701 - NU705 1NU721 - NU728 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 11 of 27
GroupVariable Number 1NU731 - NU732
2. Spares Affected None.
B. Concurrent Requirements None.
C. Reason The changes in this service bulletin will prevent possible chafe damage between the number 5 and 6 inboard slat auxiliary slat tracks and the power feeder wire bundles W3312 and W3412 or W5784 and W5786. The attach points for the support clamps for the power feeder wires in each wing are changed to get the necessary clearance for the power feeder wires.
One operator told Boeing they found that the power feeder wire bundle had chafed against the number 6 auxiliary track at Front Spar Station (FSS) 148.90. On one airplane two of the three phases of the power feeder wire bundle were worn through to the conductor. The electrical cables had arced against the auxiliary slat track and caused damage to the auxiliary slat track and power feeder wire. This condition can result in a possible ignition source for leaked flammable fluids or a generator trip with loss of power from that generator.
The attach bracket for the power feeder wire bundle clamp at FSS 148.90 has two holes where the power feeder wire bundle can be installed. The support clamp for the damaged power feeder wires was attached to the upper hole of the attach bracket. It was found that the lower hole of the attach bracket can be used to give sufficient clearance between the power feeder wire bundle and the auxiliary slat track.
This service bulletin gives instructions to do a general visual inspection of the power feeder wire bundles W3312 and W3412 or W5784 and W5786 for chafe damage and to make sure that the support clamps are correctly installed. Support clamps for the power feeder wire bundles are found in the left and right wings at FSS 148.90, near the number 5 and 6 inboard auxiliary slat tracks. Operators should now use the lower hole of the 287N1401-306 bracket to attach the power feeder wire bundle. Rivets are installed in the open holes that are not used in the brackets to prevent use of the holes. If Service Letter 757-SL-24-072 has been done, install rivets in the open holes that are not used in the attach brackets.
A similar change was made in production on line number 1024 and subsequent airplanes.
Optional fastener part numbers are added to Paragraph 2.C.2., Parts and Materials Supplied by the Operator, and to Step 4 of Figures 1 and 2.
The related 757-200 and 757-200PF bulletin is 757-24-0105.
Service Letter 757-SL-24-072 is also related to this service bulletin.
Boeing Service Related Problem (SRP) 757-SRP-24-0109 is related to this service bulletin.
Revision 1 is sent to add optional fastener data because after the initial release of this service bulletin an airline told Boeing that they cannot easily get the BACR15FTADR5C rivets.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 30, 2004 757-24-0106Revision 5: July 30, 2009 12 of 27 BOEING SERVICE BULLETIN 757-24-0106