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Commercial Airplanes 747 Service Bulletin ALERT Number: 747-25A3580 Original Issue: September 23, 2010 Revision 2: May 13, 2013 ATA System: 2500 SUBJECT: EQUIPMENT/FURNISHINGS - Cargo and Accessory Compartments - M826 Cardfile Drip Shield Change 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 © 2010 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Unpublished Work.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: September 23, 2010 747-25A3580Revision 2: May 13, 2013 1 of 92
4.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 2 of 92 BOEING SERVICE BULLETIN 747-25A3580
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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 4 B. Concurrent Requirements ...................................... 1 4 C. Reason ................................................ 1 4 D. Description .............................................. 1 6 E. Compliance .............................................. 1 6 F. Approval ............................................... 1 6 G. Manpower .............................................. 1 7 H. Weight and Balance Changes .................................... 2 0 I. Electrical Load Data ......................................... 2 1 J. References .............................................. 2 1
1. Existing Data: ......................................... 2 1
2. Data Supplied with this Service Bulletin: ........................... 2 1
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 1 K. Publications Affected ........................................ 2 1 L. Interchangeability and Intermixability of Parts ........................... 2 2 M. Software Accomplishment Summary ................................ 2 2
2. MATERIAL INFORMATION ........................................ 2 3 A. Material - Price and Availability ................................... 2 3 B. Industry Support Information .................................... 2 5 C. Parts Necessary for Each Airplane ................................. 2 5
1. Kits/Parts ............................................ 2 5
2. Parts and Materials Supplied by the Operator ........................ 2 9
3. Parts Modified and Reidentified ................................ 2 9
4. Parts Removed and Not Replaced .............................. 3 0 D. Parts Necessary to Change Spares ................................. 3 0 E. Special Tooling - Price and Availability ............................... 3 0 F. Special Tooling Necessary to do this Service Bulletin ....................... 3 0
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 3 1 A. GENERAL INFORMATION ..................................... 3 1 B. WORK INSTRUCTIONS ....................................... 3 2 FIGURE 1: EXISTING DRIP SHIELD REMOVAL [Group 2, 4] ...................... 3 4 FIGURE 2: EXISTING DRIP SHIELD REMOVAL [Group 1] ....................... 3 7 FIGURE 3: AFT DRAIN TUBE INSTALLATION [Group 1-4, Configuration 2] .............. 4 0 FIGURE 4: FORWARD DRAIN TUBE INSTALLATION [Group 1-4, Configuration 2] .......... 4 4 FIGURE 5: WIRE BUNDLES W1341, W5172, W1231, W1235, W1765 RELOCATION [Group 1-2] . . 51 FIGURE 6: WIRE BUNDLES W1341, W4753, W4756, W4762, W5172 RELOCATION [Group 3] . . . 57 FIGURE 7: WIRE BUNDLES W1231, W1235, W1765 RELOCATION [Group 4] ............ 6 4 FIGURE 8: NEW DRIP SHIELD INSTALLATION ............................. 7 0 FIGURE 9: FIGURE DELETED ....................................... 7 8 FIGURE 10: DRIP SHIELD DEFLECTOR INSTALLATION ........................ 7 9 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 3 of 92 BOEING SERVICE BULLETIN 747-25A3580
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FIGURE 11: INSULATION BLANKET REMOVAL ............................. 8 4 FIGURE 12: INSULATION BLANKET INSTALLATION ........................... 8 7 FIGURE 13: EXISTING DRIP SHIELD REMOVAL [Group 3] ....................... 9 0 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 4 of 92 BOEING SERVICE BULLETIN 747-25A3580
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Commercial Airplanes 747 Service Bulletin ALERT Revision Transmittal SheetNumber: 747-25A3580Original Issue: September 23, 2010 Revision 2: May 13, 2013 ATA System: 2500 SUBJECT: EQUIPMENT/FURNISHINGS - Cargo and Accessory Compartments - M826 Cardfile Drip Shield Change This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Notice of Proposed Rule Making NPRM 2011-NM-198-AD, is related to this service bulletin.
No more work is necessary on the airplane(s) changed in accordance with the Original Issue or Revision 01 of this service bulletin.
REASON FOR REVISION This revision is sent to incorporate changes found during service bulletin validation. Major changes include wider forward drip shield brackets and trim notes to eliminate possible short edge margins and and interference conditions.
These sections were changed:
1. Section 1.A., Effectivity, Changed the description of Group 1, Configuration 1 to account for airplanes that had the drain tubes installed in production.
2. Section 1.E., Compliance, Changed compliance recommendation to start at the issue date of Revision 02 of this SB.
3. Section 1.G., Manpower, updated manpower tables
4. Section 1.H., Weight and Balance, updated weight and balance tables
5. Section 3.A., General Information, Deleted note allowing resequencing of steps in the service bulletin.
6. Section 3.B., Accomplishment Instructions
a. Changed applicabilty of Figure 2 to just Group 1.
b. Added new Step 5 to remove existing drip shield in accordance with Figure 13.
7. Figure 5, 6, 7 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 5 of 92
a. Added alternate fastener type for Steps 3 and 4.
b. Step 4 - deleted 287U0072-53 bracket assembly and added 672U7102-15 bracket
c. Step 5 - added BACN10GH3A10 and BACR15BB4D5C rivets
8. Figure 8
a. Corrected fastener call-out in Step 1
b. Added notes to Step 10 to trim around stiffeners in bulkhead.
c. Changed part number of bracket used in Step 12.
9. Figure 10
a. Added note to Step 1 to trim aft deflector around STA 400 bulkhead stiffeners
b. Added note to Step 4 to trim fwd deflector around STA 340 bulkhead fasteners
10. Added new Figure 13.
As a part of a service bulletin validation program, this change was completed on airplane RL427 by Service Bulletin 747-25A3580 Revision 01 before the release of Revision 02 of this service bulletin. The change completed on airplane RL427 by Service Bulletin 747-25A3580 Revision 01 is equivalent to the release of Revision 02 of this service bulletin. Airplane RL427 has the configuration of a Group 1 airplane.
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.
REVISION HISTORY September 23, 2010Original Issue:
July 14, 2011Revision 1:
May 13, 2013Revision 2:
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 6 of 92 BOEING SERVICE BULLETIN 747-25A3580
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Commercial Airplanes 747 Service Bulletin ALERT SummaryNumber: 747-25A3580Original Issue: September 23, 2010 Revision 2: May 13, 2013 ATA System: 2500 SUBJECT: EQUIPMENT/FURNISHINGS - Cargo and Accessory Compartments - M826 Cardfile Drip Shield Change
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 will mitigate water from exiting over the edge of the existing drip shield and contaminating electrical components in the M826 cardfile below. If this service bulletin is not incorporated, electrical components in the M826 cardfile can malfunction due to water contamination which could result in an electrical short and potential loss of several functions essential for safe flight.
An Operator reported finding evidence of water damage to Diode Fire Card 285U0072-1 in the M826 Automatic Fire Overheat Logic Test System (AFOLTS) cardfile following a false FWD CARGO FIRE message which resulted in an Air Turn Back (ATB). Measurements showed the drip shield sloped away from the two drains added by SB 747-25A3370 (-400F) and SB 747-25A3526 (-400 Boeing Converted Freighter) and mandated by Airworthiness Directive (AD). Boeing's subsequent investigation found other reports of water damage to circuit cards in M826 affecting several operators.
This service bulletin replaces the existing drip shield with a new drip shield, installs a new drip shield deflector on the STA 400 bulkhead, and relocates wire bundles that interfere with these installations.
Boeing Service Related Problem (SRP) 747-SRP-25-0282 is related to this service bulletin.
As a part of a service bulletin validation program, this change was completed on airplane RL427 by Service Bulletin 747-25A3580 Revision 01 before the release of Revision 02 of this service bulletin. The change completed on airplane RL427 by Service Bulletin 747-25A3580 Revision 01 is equivalent to the release of Revision 02 of this service bulletin. Airplane RL427 has the configuration of a Group 1 airplane.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 7 of 92
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 AffectedYesPublications 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 85901-100RS)
- Remove existing drip shield
- Install new drip shield
- Install new drip shield deflector
- Relocate existing wire bundles
EFFECTIVITY 747-400F Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.
COMPLIANCE Federal Aviation Administration (FAA) Notice of Proposed Rule Making NPRM 2011-NM-198-AD, is related to this service bulletin.
Boeing recommends that the change given in this service bulletin be done within 24 months after the Revision 02 date of this service bulletin.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of October 8, 2008. Please refer to Paragraph
2.B., Industry Support Information.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 8 of 92 BOEING SERVICE BULLETIN 747-25A3580
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MANPOWER Group 1-4, Configuration 1:
Elapsed HoursTotal Task HoursAirplanes
9.5512.05Group 1-4, Configuration 1 Group 1-4, Configuration 2:
Elapsed HoursTotal Task HoursAirplanes
15.5518.05Group 1-4, Configuration 2
MATERIAL INFORMATION Boeing Supplied Kits/Parts.
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: September 23, 2010 747-25A3580Revision 2: May 13, 2013 9 of 92 BOEING SERVICE BULLETIN 747-25A3580
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BOEING SERVICE BULLETIN 747-25A3580
ALERT ALERT -REMOVE EXISTING DRIP SHIELD -INSTALL NEW DRIP SHIELD STA 400 -INSTALL NEW DRIP SHIELD DEFLECTOR -RELOCATE EXISTING WIRE
BUNDLES STA 1963398 Original Issue: September 23, 2010 Revision 2: May 13, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 747-25A3580 Work - See page 1 for details. 10 of 92
Commercial Airplanes 747 Service Bulletin ALERT Number: 747-25A3580 Original Issue: September 23, 2010 Revision 2: May 13, 2013 ATA System: 2500 SUBJECT: EQUIPMENT/FURNISHINGS - Cargo and Accessory Compartments - M826 Cardfile Drip Shield Change
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 airplanes shown below. Refer to PRR 85901-100RS for data about this change.
DESCRIPTIONCONFIGURATIONGROUP 747-400F airplanes line numbers 1332 to 1360 that have to relocate wire bundles W1341, W5172, W1231, W1235, W1765 -1 747-400F airplanes line numbers 1332 to 1360 that have to relocate wire bundles W1341, W5172, W1231, W1235, W1765, and have accomplished SB 747-25A3370.
1 747-400F airplanes line numbers 1332 to 1360 that have to relocate wire bundles W1341, W5172, W1231, W1235, W1765, and have not accomplished SB 747-25A3370.
2 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 11 of 92
DESCRIPTIONCONFIGURATIONGROUP 747-400F airplanes line numbers 1361 to 1418 that have to relocate wire bundles W1341, W5172, W1231, W1235, W1765 -2 747-400F airplanes line numbers 1361 to 1418 that have to relocate wire bundles W1341, W5172, W1231, W1235, W1765, and have accomplished SB 747-25A3370 or had the intent of SB 747-25A3370 installed during production.
1 747-400F airplanes line numbers 1361 to 1418 that have to relocate wire bundles W1341, W5172, W1231, W1235, W1765, and have not accomplished SB 747-25A3370.
2 747-400F airplanes that have to relocate wire bundles W1341, W4753, W4756, W4762, W5172.
-3 747-400F airplanes that have to relocate wire bundles W1341, W4753, W4756, W4762, W5172, and have accomplished SB 747-25A3370.
1 747-400F airplanes that have to relocate wire bundles W1341, W4753, W4756, W4762, W5172, and have not accomplished SB 747-25A3370.
2 747-400F airplanes that have to relocate wire bundles W1231, W1235, W1765 -4 747-400F airplanes that have to relocate wire bundles W1231, W1235, W1765, and have accomplished SB 747-25A3370.
1 747-400F airplanes that have to relocate wire bundles W1231, W1235, W1765, and have not accomplished SB 747-25A3370.
2 Airplane Models:
747-400F GroupVariable Number 1RL401 - RL403 1RL411 - RL427 2RL428 - RL430 1RL431 - RL434 2RL435 - RL436 1RL451 - RL453 2RL454 - RL456 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: September 23, 2010 747-25A3580Revision 2: May 13, 2013 12 of 92 BOEING SERVICE BULLETIN 747-25A3580