# Boeing Alert Service Bulletin 747-25A3580: U.S. DOT/FAA - Boeing Service Bulletin

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- Document: [Boeing Alert Service Bulletin 747-25A3580](https://openairdocs.org/service-documents/boeing/747-25a3580.md)
- Title as filed: U.S. DOT/FAA - Boeing Service Bulletin
- Pages: 92
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## Text

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### Page 1

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Unpublished Work.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

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747-25A3580Revision 2: May 13, 2013
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ALERTALERT
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Table of Contents
Revision Transmittal Sheet ............................................ 5
Summary ...................................................... 7
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
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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
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ALERTALERT

### Page 5

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
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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:
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BOEING SERVICE BULLETIN 747-25A3580
ALERTALERT

### Page 7

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.
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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 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
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.
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MANPOWER
Group 1-4, Configuration 1:
Elapsed HoursTotal Task HoursAirplanes
9.5512.05Group 1-4, Con-
figuration 1
Group 1-4, Configuration 2:
Elapsed HoursTotal Task HoursAirplanes
15.5518.05Group 1-4, Con-
figuration 2
MATERIAL INFORMATION
Boeing Supplied Kits/Parts.
Refer to Paragraph 2.A., Material - Price and Availability.
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ALERTALERT

### Page 10 (OCR)

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
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### Page 11

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
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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
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GroupVariable Number
1RL461 - RL462
1RL471
2RL472 - RL481
2RL491 - RL492
2RL501 - RL502
2RL511 - RL516
2RL521 - RL522
2RL531 - RL534
2RL551
2RL561 - RL568
4RL571 - RL572
2RL577
2RL579
2RL581 - RL586
1RL651 - RL655
1RL671 - RL674
2RL675
1RL681 - RL683
2RL684
1RL751 - RL752
1RM851 - RM859
1RM861 - RM862
2RM863
1RM871 - RM888
2RM889 - RM890
1RM891 - RM899
1RM901 - RM906
1RM911
3RR701
3RR721 - RR722
1RR723 - RR724
3RR746 - RR747
1RR748
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GroupVariable Number
3RR851 - RR854
1RR855 - RR856
1RR861 - RR862
3RR951 - RR952
2. Spares Affected
None.
B. Concurrent Requirements
None.
C. Reason
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.
Revision 01 is sent to make changes to the SB to correct an interference issue found during part
mock-up for the 747-8.
These sections were changed:
1. Figure 8 - Sequence of steps changed to make installation of parts easier.
2. Figure 9 - Figure has been deleted.
3. Figure 10 - Added instructions to install deflector shield at STA 340.
4. Figure 11 - New Figure added to remove existing insulation blanket.
5. Figure 12 - New Figure added to install new insulation blanket.
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### Page 15

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.
Revision 02 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
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
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### Page 16

10. Added new Figure 13.
D. Description
- Remove existing drip shield
- Install new drip shield
- Install new drip shield deflector
- Relocate existing wire bundles
Revision 2 - No more work is necessary on airplanes changed in accordance with the Original Issue
or Revision 01 of this service bulletin.
The work in this service bulletin is done in the maintenance zone(s) given below.
Affected Maintenance Zones
ZoneModel
115747-400F
E. 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.
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 Aircraft Certification Office approves the action (i.e. inspection
or modification) defined in this service bulletin as an alternative method of compliance to the requirements
of paragraph (f) of AD 2008-08-25. All provisions of AD 2008-08-25 that are not specifically referenced
in the above statement remain fully applicable and must be complied with.
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### Page 17

G. Manpower
The table below shows an estimate of the task hours necessary to do this change 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
 Time to inspect the work
 Time to cure the materials
 Time to make the parts
 Time to find the tools.
Group 1, Configuration 1:
Elapsed HoursTask HoursNumber of PersonsTask
1.501.501FIGURE 2
2.505.002FIGURE 5
3.003.001FIGURE 8
1.551.551FIGURE 10
0.500.501FIGURE 11
0.500.501FIGURE 12
9.5512.05TOTAL FOR EACH AIRPLANE
Group 2, Configuration 1:
Elapsed HoursTask HoursNumber of PersonsTask
1.501.501FIGURE 1
2.505.002FIGURE 5
3.003.001FIGURE 8
1.551.551FIGURE 10
0.500.501FIGURE 11
0.500.501FIGURE 12
9.5512.05TOTAL FOR EACH AIRPLANE
Group 3, Configuration 1:
Elapsed HoursTask HoursNumber of PersonsTask
2.505.002FIGURE 6
3.003.001FIGURE 8
1.551.551FIGURE 10
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Group 3, Configuration 1:
Elapsed HoursTask HoursNumber of PersonsTask
0.500.501FIGURE 11
0.500.501FIGURE 12
1.501.501FIGURE 13
9.5512.05TOTAL FOR EACH AIRPLANE
Group 4, Configuration 1:
Elapsed HoursTask HoursNumber of PersonsTask
1.501.501FIGURE 1
2.505.002FIGURE 7
3.003.001FIGURE 8
1.551.551FIGURE 10
0.500.501FIGURE 11
0.500.501FIGURE 12
9.5512.05TOTAL FOR EACH AIRPLANE
Group 1, Configuration 2:
Elapsed HoursTask HoursNumber of PersonsTask
1.501.501FIGURE 2
2.752.751FIGURE 3
3.253.251FIGURE 4
2.505.002FIGURE 5
3.003.001FIGURE 8
1.551.551FIGURE 10
0.500.501FIGURE 11
0.500.501FIGURE 12
15.5518.05TOTAL FOR EACH AIRPLANE
Group 2, Configuration 2:
Elapsed HoursTask HoursNumber of PersonsTask
1.501.501FIGURE 1
2.752.751FIGURE 3
3.253.251FIGURE 4
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Group 2, Configuration 2:
Elapsed HoursTask HoursNumber of PersonsTask
2.505.002FIGURE 5
3.003.001FIGURE 8
1.551.551FIGURE 10
0.500.501FIGURE 11
0.500.501FIGURE 12
15.5518.05TOTAL FOR EACH AIRPLANE
Group 3, Configuration 2:
Elapsed HoursTask HoursNumber of PersonsTask
2.752.751FIGURE 3
3.253.251FIGURE 4
2.505.002FIGURE 6
3.003.001FIGURE 8
1.551.551FIGURE 10
0.500.501FIGURE 11
0.500.501FIGURE 12
1.501.501FIGURE 13
15.5518.05TOTAL FOR EACH AIRPLANE
Group 4, Configuration 2:
Elapsed HoursTask HoursNumber of PersonsTask
1.501.501FIGURE 1
2.752.751FIGURE 3
3.253.251FIGURE 4
2.505.002FIGURE 7
3.003.001FIGURE 8
1.551.551FIGURE 10
0.500.501FIGURE 11
0.500.501FIGURE 12
15.5518.05TOTAL FOR EACH AIRPLANE
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H. Weight and Balance Changes
Group 1-2, Configuration 1:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+2621.2+7.1Group 1-2, Configu-
ration 1
Group 3, Configuration 1:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+2593.7+7.0Group 3, Configura-
tion 1
Group 4, Configuration 1:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+2591.6+7.0Group 4, Configura-
tion 1
Group 1-2, Configuration 2:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+4769.0+12.8Group 1-2, Configu-
ration 2
Group 3, Configuration 2:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+2571.7+12.2Group 3, Configura-
tion 2
Group 4, Configuration 2:
Change in Moment
(Pound-Inches)
Change in Weight
(Pounds)Airplane
+2569.6+12.2Group 4, Configura-
tion 2
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I. Electrical Load Data
Not changed.
J. References
1. Existing Data:
a. Engineering Change Memo PRR 85901-100RS
b. Boeing Service Bulletin 747-25A3580
c. Boeing Service Related Problem (SRP) 747-SRP-25-0282
d. Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2008-08-25
e. Federal Aviation Administration (FAA) Notice of Proposed Rule Making (NPRM)
2011-NM-198-AD
f. Standard Overhaul Practices Manual (SOPM) 20-50-12
g. Standard Wiring Practices Manual (SWPM) 20-10-11, 20-10-12, 20-10-19
h. 747-400 Aircraft Maintenance Manual (AMM) 25-21-04, 25-57-04, 53-21-02
2. Data Supplied with this Service Bulletin:
None.
3. Installation Drawings Used in the Preparation of this Service Bulletin:
TitleDrawing Number
DRIPSHIELD INSTL - CARD FILE - NOSE WHEEL WELL LH SIDE284U1308
These drawings were used to prepare this service bulletin. These drawings are not necessary to
make the specified changes, and are not supplied with this service bulletin. These drawings may
not be applicable to all airplane configurations or operators.
K. Publications Affected
1. Publications:
Chapter-SectionPublication
53-11747 Illustrated Parts Catalog
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 but no new DTIs are necessary.
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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.
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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 1-2, Configuration 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
$8,373.00210101/04/13TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-1
$8,373.00210801/04/13TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-1
$8,373.00210801/29/13TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-1
$8,373.00210802/26/13TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-1
$8,373.00210803/26/13TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-1
$8,373.00210804/23/13TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-1
$8,373.002101105/21/13TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-1
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### Page 24

Group 3, Configuration 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
$7,956.00210108/02/11TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-2
Group 4, Configuration 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
$8,368.00210--TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-3
Group 1-2, Configuration 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
$8,887.00210--TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-4
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### Page 25

Group 3, Configuration 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
$8,471.00308--TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-5
Group 4, Configuration 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
$8,879.00308--TOP KIT - AFOLTS
DRIP SHIELD MODIFI-
CATION
015U1882-6
B. Industry Support Information
Boeing warranty remedies are available for 747 airplanes in warranty as of October 8, 2008. For task
hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing
Commercial Airplanes Group - Warranties. The kits for airplanes in warranty as of that date will be
supplied at no charge. Send a purchase order for the kits to Boeing Spares. Please refer to this service
bulletin number and reference the airplane variable numbers in your purchase order.
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: One top kit and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by
the Operator, are necessary for each airplane.
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Group 1-4:
Kit 015U1882
NotesExisting Part
Number
NameQtyNew Part Number
-6-5-4-3-2-1
TOP KIT - AFOLTS
DRIP SHIELD
MODIFICATION
.....-015U1882-1
TOP KIT - AFOLTS
DRIP SHIELD
MODIFICATION
....-.015U1882-2
TOP KIT - AFOLTS
DRIP SHIELD
MODIFICATION
...-..015U1882-3
TOP KIT - AFOLTS
DRIP SHIELD
MODIFICATION
..-...015U1882-4
TOP KIT - AFOLTS
DRIP SHIELD
MODIFICATION
.-....015U1882-5
TOP KIT - AFOLTS
DRIP SHIELD
MODIFICATION
-.....015U1882-6
(b)CLIP222222284U1298-8
(b)DRAIN TUBE (100
INCHES)
111...284U1308-5
(b)DRAIN TUBE (150
INCHES)
111...284U1308-6
CLAMP202020...287T0011-5
(a) (d)411U4403-1031INSULATION
BLANKET ASSEM-
BLY
111111411U4403-1001
(c)DRIP SHIELD -
AFT BRACKET
111111672U7102-2
(c)DRIP SHIELD -
DEFLECTOR
111111672U7102-6
(a) (d)287U0073-57WIRE BRACKET
ASSY
222222672U7102-8
(c)DRIP SHIELD -
STA 360 BRACK-
ET ASSY
111111672U7102-9
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Group 1-4:
Kit 015U1882
NotesExisting Part
Number
NameQtyNew Part Number
-6-5-4-3-2-1
(c)DRIP SHIELD -
STA 380 BRACK-
ET ASSY
111111672U7102-10
(a) (d)284U1364-1 or
284U1364-3 or
284U1364-5
DRIP SHIELD -
ASSY
111111672U7102-11
(c)DRIP SHIELD -
DEFLECTOR
PLATE
444444672U7102-12
(c)DRIP SHIELD -
DEFLECTOR
PLATE
111111672U7102-13
(c)DRIP SHIELD -
DEFLECTOR
111111672U7102-14
(c)WIRE SUPPORT
BRACKET DETAIL
111111672U7102-15
(c)DRIP SHIELD -
FWD BRACKET
111111672U7102-16
(c)DRIP SHIELD -
FWD BRACKET
111111672U7102-17
Rod, filler11111169B47961-5
BOLT, PROTRUD-
ING HD
222222BACB30VN6K7
BOLT, PROTRUD-
ING HD
222222BACB30VN6K8
BOLT, PROTRUD-
ING HEAD
131313131313BACB30VT6K3
BOLT888888BACB30VT6K4
HI-LOK111111BACB30VT6K7
HI-LOK555555BACB30VT8K6
BOLT333333BACB30VT8K7
BOLT SHEAR
LIGHT
222222BACB30VT8K8
CLAMP, LOOP.1..1.BACC10DK12
COLLAR444444BACC30BK6
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Group 1-4:
Kit 015U1882
NotesExisting Part
Number
NameQtyNew Part Number
-6-5-4-3-2-1
COLLAR222222222222BACC30BL6
COLLAR101010101010BACC30BL8
NUT, SPACER
PLATE
222222BACN10GH3A10
NUTPLATE444...BACN10GH3A12
NUT SPACER
PLATE
222...BACN10GH3A6
NUT, SPACER
PLATE, LIGHT
DUTY
777...BACN10TL3A10
SPACER PLATE
NUT
666...BACN10TL3A6
NUT222222BACN10YR3CD
RIVET202020...BACR15BB4AD6C
RIVET, UNIVER-
SAL HD
555...BACR15BB4AD7C
RIVET, UNIVER-
SAL HEAD
444444BACR15BB4D5C
RIVET444444BACR15BB5AD5C
RIVET222222BACR15BB5D5C
RIVET, UNIVER-
SAL HD
999999BACR15BB6AD5C
RIVET, UNIVER-
SAL HD
999999BACR15BB6AD6C
RIVET, BLIND202020...BACR15DR4PAC2
RIVET, BLIND151515...BACR15DR4PAC3
SCREW.1..1.BACS12GU3K30
SCREW, CAP202020...BACS12GU3K7
BOLT777777BACS12HN3-9
BOLT444444BACS12HN3-10
BOLT222222BACS12HN3-11
BOLT111111BACS12HN3-12
BOLT111111BACS12HN3-20
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### Page 29

Group 1-4:
Kit 015U1882
NotesExisting Part
Number
NameQtyNew Part Number
-6-5-4-3-2-1
RINGPOST, WIRE
HARNESS
MOUNTING SUP-
PORT
141414141414BACS31H2B
STRAP22222.BACS38K1
STRAP.11.11BACS38K3
TIE STRAP444444444444BACS38W1
WASHER444444NAS1149D0332J
WASHER, FLAT131313131313NAS1149D0363J
SPACERS FOR
BOLTS
111111NAS43DD3-18FC
SPACERS FOR
BOLTS
.1..1.NAS43DD3-48FC
SPACERS FOR
BOLTS
111111NAS43DD3-50FC
SPACER, SLEEVE222222NAS43DD6-9FC
(a) Keep the existing part if there are other uses for it.
(b) This part is used in production.
(c) This part is not used in production.
(d) You cannot use the existing part to replace the new or changed part.
2. Parts and Materials Supplied by the Operator
Group 1-4:
NotesNameQtyPart Number/ Specification
(a)RIVET3BACR15BA4AD()C
(a)RIVET2BACR15BB5D()C
(a) Refer to the Qualified Products List at the end of the Boeing Material Specification (BMS)
for supplier data.
3. Parts Modified and Reidentified
None.
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### Page 30

4. Parts Removed and Not Replaced
None.
D. Parts Necessary to Change Spares
None.
E. Special Tooling - Price and Availability
None.
F. Special Tooling Necessary to do this Service Bulletin
No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance
and overhaul tools in the manuals given in Paragraph 1.J., References, can be necessary. Examine
operator tool supply to make sure all necessary tools are available.
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### Page 31

3.    ACCOMPLISHMENT INSTRUCTIONS
A. GENERAL INFORMATION
CAUTION: KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL
PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL,
METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE
DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR
OTHER ELECTRICAL DAMAGE.
CAUTION: KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL
PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL,
METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE
DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR
OTHER ELECTRICAL DAMAGE.
NOTE: 1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for
definition of the acronyms.
2. Obey all of the warnings and cautions given in the specified manual sections.
3. Unless shown differently, these dimensions and tolerances are used:
– Linear dimensions are in inches
– Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus
or minus 0.03 inch
– Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch
– Hole dimensions for standard solid rivets and fasteners are in Structural Repair
Manual (SRM) Chapter 51
– Torque limits to tighten nuts and bolts are in SRM Chapter 51
4. Use the approved fastener and process material substitutions in accordance with
SRM Chapter 51.
5. Refer to the SWPM 20-10-11 and SWPM 20-10-12 for the wire installation procedures,
and SWPM 20-10-19 for the wire separation requirements, as accepted procedures.
6. The necessary conditions for selection of clamp type and size are included in SWPM
20-10-12. If any wire bundle support clamp specified in this service bulletin does not
make a correct fit on the wire bundle, refer to SWPM 20-10-12 as an accepted
procedure to select a clamp that fits correctly.
7. If the length of any fastener specified in this service bulletin does not meet installation
standards given in SRM Chapter 51, then a fastener of the same specification, or
an approved substitute, with a length which meets the installation standards given
in SRM Chapter 51 may be used. In addition, washers may be installed for fastener
grip length in accordance with SRM Chapter 51.
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8. A General Visual Inspection is defined as: A visual examination of an interior or
exterior area, installation or assembly to detect obvious damage, failure or irregularity.
This level of inspection is made from within touching distance unless otherwise
specified. A mirror may be necessary to enhance visual access to all exposed surfaces
in the inspection area. This level of inspection is made under normally available
lighting conditions such as daylight, hangar lighting, flashlight or drop-light and may
require removal or opening of access panels or doors. Stands, ladders or platforms
may be required to gain proximity to the area being checked.
9. These work instructions refer to procedures included in other Boeing documents.
When the words "refer to" are used and the operator has an accepted alternative
procedure, the accepted alternative procedure can be used. When the words "in
accordance with" are included in the instruction, the procedure in the Boeing document
must be used.
10. If it is necessary to remove more parts for access, you can remove those parts. If
you can get access without removing identified parts, it is not necessary to remove
all of the identified parts. Jacking and shoring limitations must be observed.
11. Where the work instructions include installation of a kept part, a new or serviceable
part with the same part number can be installed as an alternative to the kept part.
12. The compliance times for the actions in Paragraph 3.B., WORK INSTRUCTIONS
are in Paragraph 1.E., Compliance.
B. WORK INSTRUCTIONS
1. Remove cargo handling equipment between STA 340 and STA 400 and BL 0 and LBL 80. Refer
to 747-400 AMM 25-57-04 as an accepted procedure.
2. Remove main deck floor panels between STA 340 and STA 400 and BL 0 and LBL 80. Refer to
747-400 AMM 53-21-02 as an accepted procedure.
3. Group 2, 4:
Remove existing drip shield in accordance with FIGURE 1.
4. Group 1:
Remove existing drip shield in accordance with FIGURE 2.
5. Group 3:
Remove existing drip shield in accordance with FIGURE 13.
6. Remove insulation blanket in accordance with FIGURE 11.
7. Group 1-4, Configuration 2:
Install aft drain tube in accordance with FIGURE 3.
8. Group 1-4, Configuration 2:
Install forward drain tube in accordance with FIGURE 4.
9. Group 1-2:
Relocate wire bundles W1341, W5172, W1231, W1235, W1765 in accordance with FIGURE 5.
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10. Group 3:
Relocate wire bundles W1341, W4753, W4756, W4762, W5172 in accordance with FIGURE 6.
11. Group 4:
Relocate wire bundles W1231, W1235, W1765 in accordance with FIGURE 7.
12. Install new drip shield in accordance with FIGURE 8.
13. STEP DELETED.
14. Install drip shield deflector in accordance with FIGURE 10.
15. Install insulation blanket in accordance with FIGURE 12.
16. Install main deck floor panels between STA 340 and STA 400 and BL 0 and LBL 80. Refer to
747-400 AMM 53-21-02 as an accepted procedure.
17. Install cargo handling equipment between STA 340 and STA 400 and BL 0 and LBL 80. Refer to
747-400 AMM 25-57-04 as an accepted procedure.
18. Put the airplane back to a serviceable condition.
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
33 of 92
BOEING SERVICE BULLETIN 747-25A3580
ALERTALERT

### Page 34 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
This Figure applies only to: Group 2, 4.
STA
400
STA 400
BULKHEAD
STA
340
TYPICAL
1959040
FIGURE 1: EXISTING DRIP SHIELD REMOVAL
(SHEET 1 OF 3)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright @ Unpublished
Work - See page 1 for details.

### Page 35 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
STA
380
STA
360
5) 4 LOCATIONS
2) 12 LOCATIONS
6 LOCATIONS
1958894
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
FIGURE 1: EXISTING DRIP SHIELD REMOVAL
(SHEET 2 OF 3)
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.  35 of 92

### Page 36

MORE DATAQTYIDENTIFICATIONNAMETASKSTEP
2-STRAPRemove1
2-DRAIN TUBEDisconnect
18-FASTENERSRemove2
1-DRIP SHIELDRemove3
--BRACKET - DRIP
SHIELD MOUNTING
Remove4
4-NUTPLATERemove5
FIGURE 1: EXISTING DRIP SHIELD REMOVAL
(SHEET 3 OF 3)
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
36 of 92
BOEING SERVICE BULLETIN 747-25A3580
ALERTALERT

### Page 37 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
This Figure applies only to: Group 1.
STA
400
STA 400
BULKHEAD
STA
340
1980031
FIGURE 2: EXISTING DRIP SHIELD REMOVAL
(SHEET 1 OF 3)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  PROPRIETARY - Copyright © Unpublished  Export Controlled ECCN: 9E991 - BOEING  Work - See page 1 for details.  747-25A3580  37 of 92

### Page 38 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
STA
380
STA
360.
5) 4 LOCATIONS
5 LOCATIONS  2) 10 LOCATIONS
1980036
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
FIGURE 2: EXISTING DRIP SHIELD REMOVAL
(SHEET 2 OF 3)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright © Unpublished  747-25A3580
Work - See page 1 for details.  38 of 92

### Page 39

MORE DATAQTYIDENTIFICATIONNAMETASKSTEP
2-STRAPRemove1
2-DRAIN TUBEDisconnect
16-FASTENERSRemove2
1-DRIP SHIELDRemove3
5-BRACKET - DRIP
SHIELD MOUNTING
Remove4
4-NUTPLATERemove5
FIGURE 2: EXISTING DRIP SHIELD REMOVAL
(SHEET 3 OF 3)
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
39 of 92
BOEING SERVICE BULLETIN 747-25A3580
ALERTALERT

### Page 40 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
This Figure applies only to: Group 1-4, Configuration 2.
STA
380  STA 400
BULKHEAD
360
1959043
FIGURE 3: AFT DRAIN TUBE INSTALLATION
(SHEET 1 OF 4)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.  ZG 1O Ot

### Page 41 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
LBL 19  LBL 29
7.80
13.80
20.80
40.80
- 0.63.
58.80
- 0.30
STRAP
CLAMP_
LBL
50
INBD
WASHER
SCREW
TYPICAL  NUTPLATE  A-A
1959056
FIGURE 3: AFT DRAIN TUBE INSTALLATION
(SHEET 2 OF 4)
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.  41 of 92

### Page 42 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
2.90
0.42
5 0 6-
{FWD
B-B
0.42
0.42
3.40
-WD
C-C
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
FIGURE 3: AFT DRAIN TUBE INSTALLATION
(SHEET 3 OF 4)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright © Unpublished  747-25A3580
Work - See page 1 for details.  42 of 92

### Page 43

MORE DATAQTYIDENTIFICATIONNAMETASKSTEP
1BACN10TL3A10NUT, SPACER PLATE,
LIGHT DUTY
Install (New)1
2BACR15DR4PAC3RIVET, BLINDInstall (New)
1BACN10TL3A10NUT, SPACER PLATE,
LIGHT DUTY
Install (New)2
2BACR15DR4PAC3RIVET, BLINDInstall (New)
1BACN10GH3A12NUTPLATEInstall (New)3
2BACR15DR4PAC3RIVET, BLINDInstall (New)
4BACN10TL3A6SPACER PLATE NUTInstall (New)4
8BACR15BB4AD6CRIVETInstall (New)
1BACN10TL3A10NUT, SPACER PLATE,
LIGHT DUTY
Install (New)5
2BACR15BB4AD6CRIVETInstall (New)
1BACN10TL3A6SPACER PLATE NUTInstall (New)6
2BACR15DR4PAC3RIVET, BLINDInstall (New)
9287T0011-5CLAMPInstall (New)7
9BACS12GU3K7SCREW, CAPInstall (New)
9NAS1149D0332JWASHERInstall (New)
9BACS38K1STRAPInstall (New)
1284U1308-5DRAIN TUBE (100
INCHES)
Install (New)8
The parts shown in the table below are provided as extra parts for this figure.
MORE DATAQTYIDENTIFICATIONNAME
10BACR15BB4AD6CRIVET
2287T0011-5CLAMP
5BACR15DR4PAC3RIVET, BLIND
1BACN10TL3A6SPACER PLATE NUT
FIGURE 3: AFT DRAIN TUBE INSTALLATION
(SHEET 4 OF 4)
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
43 of 92
BOEING SERVICE BULLETIN 747-25A3580
ALERTALERT

### Page 44 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
This Figure applies only to: Group 1-4, Configuration 2.
STA
380  STA 400
BULKHEAD
STA
360
1959247
FIGURE 4: FORWARD DRAIN TUBE INSTALLATION
(SHEET 1 OF 7)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.

### Page 45 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
186
G
STA
340
STA  FWD  STA  380
STA  1959254
A-A  400
FIGURE 4: FORWARD DRAIN TUBE INSTALLATION
(SHEET 2 OF 7)
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.  45 of 92

### Page 46 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
C
D
STRAP
CLAMP,
‚WASHER
SCREW
NUTPLATE
LBL
60  LBL
20
INBD
B-B  1959282
FIGURE 4: FORWARD DRAIN TUBE INSTALLATION
(SHEET 3 OF 7)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright © Unpublished  747-25A3580
Work - See page 1 for details.  46 of 92

### Page 47 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
0.84  -3.00
3) 3 LOCATIONS
INBD
1959285
FIGURE 4: FORWARD DRAIN TUBE INSTALLATION
(SHEET 4 OF 7)
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.  47 of 92

### Page 48 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
LBL
25.60
7.36
0.25
INBD  9 B
C-C
- 11.23
0.25
INBD
D-D  1959303
FIGURE 4: FORWARD DRAIN TUBE INSTALLATION
(SHEET 5 OF 7)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  747-25A3580
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.  48 of 92

### Page 49 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
0.80
-0.25
9) B  9 B
3.60
FWD
F-F
E-E
5.25
6.10
INBD  INBD
G-G  H-H  1959326
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
FIGURE 4: FORWARD DRAIN TUBE INSTALLATION
(SHEET 6 OF 7)
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.  49 of 92

### Page 50

MORE DATAQTYIDENTIFICATIONNAMETASKSTEP
1BACN10GH3A6NUT SPACER PLATEInstall (New)1
2BACR15BB4AD7CRIVET, UNIVERSAL
HD
Install (New)
1BACN10GH3A12NUTPLATEInstall (New)2
2BACR15BB4AD7CRIVET, UNIVERSAL
HD
Install (New)
3BACN10TL3A10NUT, SPACER PLATE,
LIGHT DUTY
Install (New)3
6BACR15DR4PAC2RIVET, BLINDInstall (New)
1BACN10GH3A6NUT SPACER PLATEInstall (New)4
2BACR15DR4PAC3RIVET, BLINDInstall (New)
1BACN10TL3A10NUT, SPACER PLATE,
LIGHT DUTY
Install (New)5
2BACR15DR4PAC2RIVET, BLINDInstall (New)
1BACN10GH3A12NUTPLATEInstall (New)6
2BACR15DR4PAC2RIVET, BLINDInstall (New)
1BACN10GH3A12NUTPLATEInstall (New)7
2BACR15DR4PAC2RIVET, BLINDInstall (New)
9287T0011-5CLAMPInstall (New)8
9BACS12GU3K7SCREW, CAPInstall (New)
9NAS1149D0332JWASHERInstall (New)
9BACS38K1STRAPInstall (New)
1284U1308-6DRAIN TUBE (150
INCHES)
Install (New)9
The parts shown in the table below are provided as extra parts for this figure.
MORE DATAQTYIDENTIFICATIONNAME
1BACR15BB4AD7CRIVET, UNIVERSAL
HD
8BACR15DR4PAC2RIVET, BLIND
2BACS12GU3K7SCREW, CAP
2NAS1149D0332JWASHER
7BACS38K1STRAP
FIGURE 4: FORWARD DRAIN TUBE INSTALLATION
(SHEET 7 OF 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
50 of 92
BOEING SERVICE BULLETIN 747-25A3580
ALERTALERT

### Page 51 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
This Figure applies only to: Group 1-2.
STA
400
STA
360
1960439
FIGURE 5: WIRE BUNDLES W1341, W5172, W1231, W1235, W1765 RELOCATION
(SHEET 1 OF 6)
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.  51 of 92

### Page 52 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
W1231
W1235
W1765
W1341  W5172
LBL
30
THROUGH D
LBL
40
1959755
FIGURE 5: WIRE BUNDLES W1341, W5172, W1231, W1235, W1765 RELOCATION
(SHEET 2 OF 6)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  747-25A3580
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.  52 of 92

### Page 53 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
LBL
40
ALBL
50
LBL
40
LBL
50
0.563 -
7.50
7.50
1960500
FIGURE 5: WIRE BUNDLES W1341, W5172, W1231, W1235, W1765 RELOCATION
(SHEET 3 OF 6)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  747-25A3580
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.  53 of 92

### Page 54 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
W1341
AS REQUIRED 13
14 LOCATIONS (10
LBL
19
LBL
24
W5172
LBL
29
LBL  W1231
34.5  W1235
W1765
1960852
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
FIGURE 5: WIRE BUNDLES W1341, W5172, W1231, W1235, W1765 RELOCATION
(SHEET 4 OF 6)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright © Unpublished  747-25A3580
Work - See page 1 for details.  54 of 92

### Page 55

More DataQtyIdentificationNameTaskStep
--WIRE BUNDLESRemove / Keep1
2-FASTENERSRemove2
1287U0073-57CHANNEL ASSYRemove
2-FASTENERSRemove3
1287U0072-53BRACKET ASSYRemove
2BACB30VN6K7
(BACB30MY6K7 option-
al)
BOLT, PROTRUDING
HD
Install (New)
2BACC30BK6COLLARInstall (New)
Install 672U7102-15
bracket in location
shown.
1672U7102-15WIRE SUPPORT
BRACKET DETAIL
Install (New)4
2BACB30VN6K8
(BACB30MY6K8 option-
al)
BOLT, PROTRUDING
HD
Install (New)
2BACC30BK6COLLARInstall (New)
1672U7102-8WIRE BRACKET ASSYInstall (New)5
Use the 672U7102-
8 wire bracket assy
to locate the
BACN10GH3A10 on
the 672U7102-15
bracket.
1BACN10GH3A10NUT, SPACER PLATEInstall (New)
Use the 672U7102-
8 wire bracket assy
to locate the
BACN10GH3A10 on
the 672U7102-15
bracket.
2BACR15BB4D5CRIVET, UNIVERSAL
HEAD
Install (New)
2BACS12HN3-10BOLTInstall (New)
2NAS1149D0332JWASHERInstall (New)
1287U0073-55CHANNEL ASSYRemove6
2-FASTENERSRemove
1-NUT, SPACER PLATERemove7
2-FASTENERSRemove
Fill holes from re-
moved nut, spacer
plate.
2BACR15BB5D()CRIVETInstall (New)
FIGURE 5: WIRE BUNDLES W1341, W5172, W1231, W1235, W1765 RELOCATION
(SHEET 5 OF 6)
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
55 of 92
BOEING SERVICE BULLETIN 747-25A3580
ALERTALERT

### Page 56

More DataQtyIdentificationNameTaskStep
1BACN10GH3A10NUT, SPACER PLATEInstall (New)8
2BACR15BB4D5CRIVET, UNIVERSAL
HEAD
Install (New)
1672U7102-8WIRE BRACKET ASSYInstall (New)9
2BACS12HN3-10BOLTInstall (New)
2NAS1149D0332JWASHERInstall (New)
14BACS31H2BRINGPOST, WIRE
HARNESS MOUNTING
SUPPORT
Install (New)10
Install kept wire bun-
dles on new ring
posts in the same
approximate location
--WIRE BUNDLESInstall (Kept)11
W1341, W5172,
W1231, W1235,
W1765
--WIRE BUNDLESRoute12
36BACS38W1TIE STRAPInstall (New)13
Locate strap so that
wire bundle W5172
does not contact
surrounding wire
bundles, tubing, or
structure.
1BACS38K3STRAPInstall (New)14
Use a 2" piece of the
grommet at ring post
to ensure separation
of W1231, W1235,
W1765. Quantity as
required.
169B47961-5GROMMETInstall (New)15
Place 0.25" from end
of grommet.
2BACS38W1TIE STRAPInstall (New)
The parts shown in the table below are provided as extra parts for this figure.
MORE DATAQTYIDENTIFICATIONNAME
6BACS38W1TIE STRAP
2BACR15BB5D5CRIVET
FIGURE 5: WIRE BUNDLES W1341, W5172, W1231, W1235, W1765 RELOCATION
(SHEET 6 OF 6)
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
56 of 92
BOEING SERVICE BULLETIN 747-25A3580
ALERTALERT

### Page 57 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
This Figure applies only to: Group 3.
STA
400
SIA
360
1960853
FIGURE 6: WIRE BUNDLES W1341, W4753, W4756, W4762, W5172 RELOCATION
(SHEET 1 OF 7)
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.  57 of 92

### Page 58 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
W1341
W4753
W4756
W4762
W5172
LBL
30
THROUGH D
LBL
40
1961022
FIGURE 6: WIRE BUNDLES W1341, W4753, W4756, W4762, W5172 RELOCATION
(SHEET 2 OF 7)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  747-25A3580
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.  58 of 92

### Page 59 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
LBL
40
ALBL
50
LBL
40
LBL
50
0.563 -
7.50
7.50
1961026
FIGURE 6: WIRE BUNDLES W1341, W4753, W4756, W4762, W5172 RELOCATION
(SHEET 3 OF 7)
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.  59 of 92

### Page 60 (OCR)

BOEING SERVICE BULLETIN 747-25A3580
ALERT  ALERT
W1341
W4753
AS REQUIRED  W4756
W4762
13 LOCATIONS 1
LBL
19
LBL
24
W5172
LBL
29
LBL
34.5
1961084
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
FIGURE 6: WIRE BUNDLES W1341, W4753, W4756, W4762, W5172 RELOCATION
(SHEET 4 OF 7)
Original Issue: September 23, 2010
Revision 2 May 13, 2013  Export Controlled ECCN: 9E991 - BOEING  PROPRIETARY - Copyright © Unpublished  747-25A3580
Work - See page 1 for details.  60 of 92

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