# Boeing Alert Service Bulletin 747-53A2852: No revision named

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- Title as filed: U.S. DOT/FAA - SB-747-53A2852-00
- Pages: 189
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### Page 1

Commercial 
Airplanes
747
Service Bulletin
ALERT
Number: 747-53A2852
Original Issue: June 22, 2012
ATA System: 5321
SUBJECT: FUSELAGE - Auxiliary Structure - Main and Upper Deck Floor - Upper Deck Floor
Beam Upper Chord and Strap Replacement
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 © 2012 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Unpublished Work.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.
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Table of Contents
Summary ...................................................... 5
1. PLANNING INFORMATION ........................................ 9
A. Effectivity ................................................ 9
1. Airplanes ............................................. 9
2. Spares Affected ........................................ 1 5
B. Concurrent Requirements ...................................... 1 5
C. Reason ................................................ 1 6
D. Description .............................................. 1 6
E. Compliance .............................................. 1 7
F. Approval ............................................... 2 2
G. Manpower .............................................. 2 2
H. Weight and Balance Changes .................................... 2 8
I. Electrical Load Data ......................................... 2 8
J. References .............................................. 2 8
1. Existing Data: ......................................... 2 8
2. Data Supplied with this Service Bulletin: ........................... 2 9
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 9
K. Publications Affected ........................................ 3 0
L. Interchangeability and Intermixability of Parts ........................... 3 0
M. Software Accomplishment Summary ................................ 3 0
2. MATERIAL INFORMATION ........................................ 3 1
A. Material - Price and Availability ................................... 3 1
B. Industry Support Information .................................... 3 1
C. Parts Necessary for Each Airplane ................................. 3 1
1. Kits/Parts: ........................................... 3 1
2. Parts and Materials Supplied by the Operator: ........................ 3 1
3. Parts Modified and Reidentified: ............................... 1 1 9
4. Parts Removed and Not Replaced: ............................. 1 1 9
D. Parts Necessary to Change Spares ................................ 1 1 9
E. Special Tooling - Price and Availability .............................. 1 1 9
F. Special Tooling Necessary to do this Service Bulletin ...................... 1 1 9
3. ACCOMPLISHMENT INSTRUCTIONS ................................. 1 2 1
A. GENERAL INFORMATION .................................... 1 2 1
B. WORK INSTRUCTIONS ...................................... 1 2 2
FIGURE 1: UPPER DECK FLOOR BEAM - UPPER CHORD - REPLACEMENT LOCATIONS [Group 1-2]
................................................. 1 2 8
FIGURE 2: UPPER DECK FLOOR BEAM - UPPER CHORD - REPLACEMENT LOCATIONS [Group 3-4]
................................................. 1 3 1
FIGURE 3: UPPER DECK FLOOR BEAM - UPPER CHORD - REPLACEMENT LOCATIONS [Group 5]
................................................. 1 3 4
FIGURE 4: UPPER DECK FLOOR BEAM - UPPER CHORD - REPLACEMENT LOCATIONS [Group 6]
................................................. 1 3 8
Appendix A: UPPER DECK FLOOR BEAM - UPPER CHORD DATA .................. 1 4 1
APPENDIX B: FASTENER REPLACEMENT GUIDE ............................ 1 8 7
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Commercial 
Airplanes
747
Service Bulletin
ALERT
SummaryNumber: 747-53A2852Original Issue: June 22, 2012
ATA System: 5321
SUBJECT: FUSELAGE - Auxiliary Structure - Main and Upper Deck Floor - Upper Deck Floor
Beam Upper Chord and Strap Replacement
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 gives instructions to replace the upper chords and reinforcing straps on the upper deck
floor beams. The upper deck floor beam upper chords have been determined to be structure that could develop
Widespread Fatigue Damage (WFD). WFD of the floor beam upper chords could reduce the structural integrity
of the floor beams such that multiple adjacent beams could become severed, resulting in rapid decompression
of the airplane.
Analysis by Boeing indicates that accomplishment of the inspections, repairs, and modifications currently in
Service Bulletin 747-53A2452 are not adequate to ensure the structural integrity of the affected upper deck floor
beam upper chords on airplanes that are operated beyond 30,000 total flight cycles. On these airplanes, Boeing
recommends that the upper deck floor beam upper chords and reinforcing straps be replaced in accordance
with this service bulletin.
For more information on WFD, refer to Boeing Service Letter 747-SL-53-088A.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more
information.
ReferenceAffectedPlanning Data
Paragraph 1.A.2., Spares AffectedNoSpares Affected
Paragraph 1.E., ComplianceYesAD Related
Paragraph 1.H., Weight and Balance ChangesNoWeight and Balance Change
Paragraph 1.I., Electrical Load DataNoElectrical Load Changed
Paragraph 1.K., Publications AffectedNoPublications Affected
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ReferenceAffectedPlanning Data
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/PartsNoKits/Parts Required
Paragraph 2.C.2., Parts and Materials Supplied
by the Operator
YesOperator Supplied Material
Paragraph 2.F., Special Tooling Necessary to
do this Service Bulletin
NoSpecial Tooling Required
ACTION
Get access to upper deck floor beams from the upper deck and main deck, as necessary. Remove the floor
beam upper chords and reinforcing straps. Do an open hole High Frequency Eddy Current (HFEC) inspection
at all accessed holes and repair any cracks that are found. Fabricate and install new upper chords and reinforcing
straps. Re-install any repairs or parts that are not replaced. Install all equipment and panels removed for access.
Upper chord replacement is only required at "full length" upper deck floor beams aft of station (STA) 360 that
span the entire width of the airplane from the left side of body frame to the right side of body frame.
EFFECTIVITY
All 747-100/-100B/-100B SUD/-200B/-300/SP/SR airplanes. Refer to Paragraph 1.A.1., Airplanes for the list of
affected airplanes.
COMPLIANCE
Federal Aviation Administration (FAA) Airworthiness Directives AD 2004-07-22 R1 and AD 2005-20-29 are
related to this service bulletin.
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION
Boeing warranty remedies are not available for the configuration changes given in this service bulletin.
MANPOWER
Elapsed HoursTotal Task HoursAirplanes
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
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BOEING SERVICE BULLETIN 747-53A2852
ALERT  ALERT
MATERIAL INFORMATION
Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability.
REMOVE AND DISCARD EXISTING UPPER CHORDS
FLOOR PANEL  AND STRAPS. MAKE AND INSTALL NEW UPPER
CHORDS AND STRAPS
UPPER CHORD
WEB  DO HFEC OPEN HOLE INSPECTIONS OF
— ALL ACCESSED HOLES IN THE WEB
AND FRAMES.
LOWER CHORD
TYPICAL UPPER
DECK FLOOR BEAMS
2155373
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Commercial 
Airplanes
747
Service Bulletin
ALERT
Number: 747-53A2852
Original Issue: June 22, 2012
ATA System: 5321
SUBJECT: FUSELAGE - Auxiliary Structure - Main and Upper Deck Floor - Upper Deck Floor
Beam Upper Chord and Strap Replacement
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.
DESCRIPTIONCONFIGURATIONGROUP
747-100, 747-100B, 747-200B, 747-SP, and 747-SR Passenger
airplanes with a circular stairway cutout, except those modified by
Boeing to the Special Freighter configuration.
-1
747-100, 747-100B, 747-200B, and 747-SR airplanes with a circular
stairway cutout that have been modified by Boeing to the Special
Freighter configuration.
-2
747-100, 747-100B, 747-200B, 747-SP, and 747-SR Passenger
airplanes with a forward straight stairway cutout, except those
modified by Boeing to the Special Freighter configuration.
-3
747-100, 747-100B, 747-200B, and 747-SR airplanes with a forward
straight stairway cutout that have been modified by Boeing to the
Special Freighter configuration.
-4
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DESCRIPTIONCONFIGURATIONGROUP
Stretched upper deck 747-100 (747-100BSUD), stretched upper deck
747-200B, and 747-300 airplanes except those modified by Boeing
to the Special Freighter configuration.
-5
Stretched upper deck 747-100 (747-100BSUD), stretched upper deck
747-200B, and 747-300 airplanes that have been modified by Boeing
to the Special Freighter configuration.
-6
Airplane Models:
747-100, 747-100B, 747-100B SUD, 747-200B, 747-300, 747SP, 747SR
GroupVariable Number
1RA001 - RA025
2RA026
1RA027 - RA028
2RA029
1RA030 - RA032
2RA033
1RA034
2RA101 - RA103
1RA104 - RA110
2RA111 - RA112
1RA113 - RA115
2RA161 - RA163
1RA164
1RA201 - RA203
1RA216 - RA217
1RA245 - RA246
1RA251 - RA266
1RA301 - RA318
1RA351 - RA360
1RA369 - RA373
1RA401 - RA418
1RA501 - RA502
1RA521 - RA523
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GroupVariable Number
2RA524
1RA525 - RA528
1RA532 - RA548
1RA551 - RA552
1RA559 - RA561
1RA581 - RA582
1RA585
1RA601 - RA602
1RA631
2RA632
1RA633
2RA634 - RA635
1RA651 - RA652
1RA671 - RA677
1RA701 - RA702
1RA721 - RA731
1RA741 - RA745
1RA749 - RA750
1RA761 - RA762
1RA781 - RA784
2RA901 - RA902
1RA903 - RA909
2RA910 - RA916
1RB001 - RB016
2RB041
1RB042
2RB043
1RB044
1RB071 - RB075
1RB101 - RB102
1RB411 - RB413
1RB421
1RB601 - RB603
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GroupVariable Number
2RB604 - RB605
1RB606
2RB607
1RB681 - RB695
2RB696
1RB697
1RB711
1RB721 - RB723
1RB741 - RB748
1RD001 - RD004
1RD021 - RD022
2RD041
1RD042
2RD043 - RD044
1RD045 - RD054
2RD055
1RD056 - RD059
1RD071 - RD072
1RD081
2RD082 - RD083
1RD091 - RD092
1RD101 - RD104
1RD121 - RD127
1RD131 - RD141
2RD142
1RD143
2RD144
1RD166 - RD167
1RD171 - RD172
1RD181 - RD183
3RD201 - RD204
1RD221 - RD226
2RD227
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GroupVariable Number
1RD231 - RD232
2RD233 - RD234
1RD235
3RD241 - RD243
1RD251 - RD262
1RD271 - RD272
1RD291 - RD292
4RD301
3RD302
1RD311
1RD351 - RD357
2RD358
4RD361 - RD366
5RD381 - RD383
4RD411 - RD412
3RD413 - RD414
1RD421 - RD426
1RD431 - RD435
4RD441 - RD442
1RD451 - RD456
2RD461
3RD471 - RD475
1RD513 - RD519
1RD531 - RD533
2RD551
1RD561
1RD571
4RD581 - RD583
1RD591 - RD593
6RD601 - RD602
5RD603 - RD607
1RD621
2RD622 - RD623
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GroupVariable Number
2RD641 - RD643
1RD644 - RD645
2RD646
1RD647 - RD649
1RD651 - RD659
1RD661
1RD671
1RD681 - RD682
2RD691
1RD692
1RD701 - RD702
5RD721 - RD722
3RD741 - RD742
1RD751
2RD752
1RD753 - RD755
1RD761
1RD771 - RD775
1RD781 - RD783
1RD791 - RD792
1RE001
1RG001 - RG009
1RG091
3RG095
1RG101 - RG104
3RG121 - RG126
1RG141 - RG142
3RG161 - RG164
1RG171 - RG174
1RG191 - RG193
1RG211 - RG213
3RG221 - RG222
1RH101 - RH102
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GroupVariable Number
1RH111 - RH112
1RH121 - RH122
5RS001 - RS002
5RS201
5RS211 - RS212
5RS221 - RS222
5RS231 - RS241
5RS251 - RS259
5RS263
5RS265 - RS268
5RS271 - RS276
5RS291 - RS292
5RS301 - RS306
5RS311 - RS320
5RS331 - RS333
5RS341 - RS342
5RS699
5RS701 - RS703
5RS711 - RS713
6RS721 - RS722
5RS731 - RS732
5RS741 - RS743
5RS751 - RS752
5RS761
6RS762
5RS771
5RS781 - RS782
5RS786
2. Spares Affected
None.
B. Concurrent Requirements
None.
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C. Reason
This service bulletin gives instructions to replace the upper chords and reinforcing straps on the upper
deck floor beams. The upper deck floor beam upper chords have been determined to be structure that
could develop Widespread Fatigue Damage (WFD). WFD of the floor beam upper chords could reduce
the structural integrity of the floor beams such that multiple adjacent beams could become severed,
resulting in rapid decompression of the airplane.
Analysis by Boeing indicates that accomplishment of the inspections, repairs, and modifications currently
in Service Bulletin 747-53A2452 are not adequate to ensure the structural integrity of the affected upper
deck floor beam upper chords on airplanes that are operated beyond 30,000 total flight cycles. On
these airplanes, Boeing recommends that the upper deck floor beam upper chords and reinforcing
straps be replaced in accordance with this service bulletin.
For more information on WFD, refer to Boeing Service Letter 747-SL-53-088A.
D. Description
Get access to upper deck floor beams from the upper deck and main deck, as necessary. Remove the
floor beam upper chords and reinforcing straps. Do an open hole High Frequency Eddy Current (HFEC)
inspection at all accessed holes and repair any cracks that are found. Fabricate and install new upper
chords and reinforcing straps. Re-install any repairs or parts that are not replaced. Install all equipment
and panels removed for access.
Upper chord replacement is only required at "full length" upper deck floor beams aft of station (STA)
360 that span the entire width of the airplane from the left side of body frame to the right side of body
frame.
The work in this service bulletin is done in the maintenance zone(s) given below.
Group 1:
Affected Maintenance Zones
ZoneModel
221, 222, 223, 224, 225, 226, 233, 234747-100, 747-100B, 747-200B,
747SR
Group 1, 3:
Affected Maintenance Zones
ZoneModel
221, 222, 223, 224, 225, 226747SP
Group 2:
Affected Maintenance Zones
ZoneModel
221, 222, 223, 224, 225, 226, 233, 234747-100, 747-200B, 747SR
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Group 3-4, 6:
Affected Maintenance Zones
ZoneModel
221, 222, 223, 224, 225, 226, 233, 234747-200B
Group 5:
Affected Maintenance Zones
ZoneModel
221, 222, 223, 224, 225, 226, 233, 234747-100B SUD, 747-200B
Group 5-6:
Affected Maintenance Zones
ZoneModel
221, 222, 223, 224, 225, 226747-300
E. Compliance
Federal Aviation Administration (FAA) Airworthiness Directives AD 2004-07-22 R1 and AD 2005-20-29
are related to this service bulletin.
Table 1: Upper Deck Floor Beam - Upper Chord - Replacement
Compliance Time (Whichever Occurs Later)ActionCondition
Within 3,000 flight cycles
after the original issue
date of this service bul-
letin.
Before 30,000 total
flight cycles. (a)
Remove the existing upper deck floor beam
upper chords and reinforcing straps or angles
in accordance with Accomplishment Instruc-
tions Paragraph 3.B, Part 2.
All Air-
planes
Do an open hole HFEC inspection for cracks
at all locations in the floor beam webs and side
of body frames where fasteners were removed
in accordance with Accomplishment Instruc-
tions Paragraph 3.B, Part 2.
Do a detailed inspection for cracks in any parts
that were removed and will be re-installed in
accordance with Accomplishment Instructions
Paragraph 3.B, Part 2.
-Before further flightReplace the cracked part or contact Boeing
for repair instructions and do the repair.
Any Crack
found
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Table 1: Upper Deck Floor Beam - Upper Chord - Replacement
Compliance Time (Whichever Occurs Later)ActionCondition
-Before further flight af-
ter the inspections are
done in accordance
with Accomplishment
Instruction Paragraph
3.B, Part 2 is accom-
plished.
Make and install new upper deck floor beam
upper chords and reinforcing straps or angles
in accordance with Accomplishment Instruc-
tions Paragraph 3.B, Part 3.
All Air-
planes
(a) Due to the after-modification requirements, and the possibility that it would be necessary to replace the
upper chords and reinforcing straps again, Boeing does not recommend upper chord replacement prior
to 15,000 total flight-cycles.
Group 1-2:
Table 2: After Replacement Inspections
Repeat Inter-
val (Not to
Exceed)
Compliance TimeActionCondition
-Within 20,000 flight cycles after
the upper chord replacement in
accordance with this service
bulletin.
Do inspections of the replaced
upper deck floor beam upper
chords for cracks in accordance
with Accomplishment Instruc-
tions Paragraph 3.B, Part 4.
Upper chord replacement
has been done in accor-
dance with this service bul-
letin, with minimum 1.7D
edge margin on upper chord
and all adjacent parts.
-Within 15,000 flight cycles after
the upper chord replacement in
accordance with this service
bulletin.
Do inspections of the replaced
upper deck floor beam upper
chords for cracks in accordance
with Accomplishment Instruc-
tions Paragraph 3.B, Part 4.
Upper chord replacement
has been done in accor-
dance with this service bul-
letin, with minimum 1.7D
edge margin on upper chord
and all adjacent parts, ex-
cept minimum 1.5D edge
margin at fasteners common
to the floor beam to frame
connection in Section 41.
-Before further flight.Contact Boeing for repair instruc-
tions and do the repair.
Any crack is found.
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Group 1-2:
Table 2: After Replacement Inspections
Repeat Inter-
val (Not to
Exceed)
Compliance TimeActionCondition
3,000 flight cy-
cles.
-Repeat the inspections of the
replaced upper deck floor beam
upper chords for cracks in accor-
dance with Accomplishment In-
structions Paragraph 3.B, Part
4. (a)
No crack is found.
2,000 flight cy-
cles.
-Repeat the inspections of the
replaced upper deck floor beam
upper chords for cracks at
strap/frame connections at STA
440 and 520 in accordance with
Accomplishment Instructions
Paragraph 3.B, Part 4. (b)
-Within 10,000 flight cycles after
the initial HFEC inspections of
the replaced upper chords was
done in accordance with Accom-
plishment Instructions Para-
graph 3.B, Part 4.
Do the chord removal, open
hole HFEC inspections, detailed
inspections, chord fabrication,
and new chord installation ac-
tions again, in accordance with
Accomplishment Instructions
Paragraph 3.B, Part 2 and
Paragraph 3.B, Part 3.
(a) Except inspections of floor beam upper chord at strap/frame connections at STA 440 and 520.
(b) This inspection requirement corresponds to Structural Significant Item (SSI) F-20B of Supplemental
Structural Inspection Document (SSID) D6-35022, Revision G, dated December 2000.
Group 3-5:
Table 3: After Replacement Inspections
Repeat Inter-
val (Not to
Exceed)
Compliance TimeActionCondition
-Within 20,000 flight cycles after
the upper chord replacement in
accordance with this service
bulletin.
Do HFEC inspections of the re-
placed upper deck floor beam
upper chords for cracks in accor-
dance with Accomplishment In-
structions Paragraph 3.B, Part
4.
Upper chord replacement
has been done in accor-
dance with this service bul-
letin, with minimum 1.7D
edge margin on upper chord
and all adjacent parts.
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Group 3-5:
Table 3: After Replacement Inspections
Repeat Inter-
val (Not to
Exceed)
Compliance TimeActionCondition
-Within 15,000 flight cycles after
the upper chord replacement in
accordance with this service
bulletin.
Do inspections of the replaced
upper deck floor beam upper
chords for cracks in accordance
with Accomplishment Instruc-
tions Paragraph 3.B, Part 4.
Upper chord replacement
has been done in accor-
dance with this service bul-
letin, with minimum 1.7D
edge margin on upper chord
and all adjacent parts, ex-
cept minimum 1.5D edge
margin at fasteners common
to the floor beam to frame
connection in Section 41.
-Before further flight.Contact Boeing for repair instruc-
tions and do the repair.
Any crack is found.
3,000 flight cy-
cles.
-Repeat the HFEC inspections
of the replaced upper deck floor
beam upper chords for cracks
in accordance with Accomplish-
ment Instructions Paragraph
3.B, Part 4.
No crack is found.
-Within 10,000 flight cycles after
the initial HFEC inspections of
the replaced upper chords was
done in accordance with Accom-
plishment Instructions Para-
graph 3.B, Part 4.
Do the chord removal, open
hole HFEC inspections, detailed
inspections, chord fabrication,
and new chord installation ac-
tions again, in accordance with
Accomplishment Instructions
Paragraph 3.B, Part 2 and
Paragraph 3.B, Part 3.
Group 6:
Table 4: After Replacement Inspections
Repeat Inter-
val (Not to
Exceed)
Compliance TimeActionCondition
-Within 20,000 flight cycles after
the upper chord replacement in
accordance with this service
bulletin.
Do inspections of the replaced
upper deck floor beam upper
chords for cracks in accordance
with Accomplishment Instruc-
tions Paragraph 3.B, Part 4.
Upper chord replacement
has been done in accor-
dance with this service bul-
letin, with minimum 1.7D
edge margin on upper chord
and all adjacent parts.
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### Page 21

Group 6:
Table 4: After Replacement Inspections
Repeat Inter-
val (Not to
Exceed)
Compliance TimeActionCondition
-Within 15,000 flight cycles after
the upper chord replacement in
accordance with this service
bulletin.
Do inspections of the replaced
upper deck floor beam upper
chords for cracks in accordance
with Accomplishment Instruc-
tions Paragraph 3.B, Part 4.
Upper chord replacement
has been done in accor-
dance with this service bul-
letin, with minimum 1.7D
edge margin on upper chord
and all adjacent parts, ex-
cept minimum 1.5D edge
margin at fasteners common
to the floor beam to frame
connection in Section 41.
-Before further flight.Contact Boeing for repair instruc-
tions and do the repair.
Any crack is found.
3,000 flight cy-
cles.
-Repeat the inspections of the
replaced upper deck floor beam
upper chords for cracks in accor-
dance with Accomplishment In-
structions Paragraph 3.B, Part
4. (a)
No crack is found.
2,000 flight cy-
cles.
-Repeat the inspections of the
replaced upper deck floor beam
upper chords for cracks at
strap/frame connections at STA
440 and 520 in accordance with
Accomplishment Instructions
Paragraph 3.B, Part 4. (b)
-Within 10,000 flight cycles after
the initial HFEC inspections of
the replaced upper chords was
done in accordance with Accom-
plishment Instructions Para-
graph 3.B, Part 4.
Do the chord removal, open
hole HFEC inspections, detailed
inspections, chord fabrication,
and new chord installation ac-
tions again, in accordance with
Accomplishment Instructions
Paragraph 3.B, Part 2 and
Paragraph 3.B, Part 3.
(a) Except inspections of floor beam upper chord at strap/frame connections at STA 440 and 520.
(b) This inspection requirement corresponds to Structural Significant Item (SSI) F-20B of Supplemental
Structural Inspection Document (SSID) D6-35022, Revision G, dated December 2000.
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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.
This service bulletin has been approved by the Federal Aviation Administration (FAA). In addition, the
manager of the FAA Seattle Aircraft Certification Office approves the accomplishment of the replacement
and after replacement actions with corresponding compliance times specified in Tables 1 - 4, under
paragraph 1.E., "Compliance" of Service Bulletin 747-53A2852, original issue, as an Alternative Method
of Compliance (AMOC) to the inspection and repair requirements with corresponding compliance times
required by paragraphs (i), (m), (n), and (p) of AD 2005-20-29. This AMOC is only for upper deck floor
beam upper chords and straps that have been replaced in accordance with this service bulletin. When
this service bulletin specifies contacting Boeing for repair instructions, the repair instructions must be
approved by the FAA in accordance with paragraph (s) of the AD. All provisions of AD 2005-20-29 that
are not specifically referenced in the above statement remain fully applicable and must be complied
with accordingly.
In addition, the Manager of the Seattle ACO approves the accomplishment of the replacement and
after replacement actions with corresponding compliance times specified in Tables 1 - 4 under paragraph
1.E., "Compliance" of Service Bulletin 747-53A2852, original issue, as an AMOC to the corresponding
inspection and repair requirements of paragraphs (h), (i)(3), and (j) of AD 2004-07-22 R1, for the
inspection of Structural Significant Items (SSI) F-19B, F-19D, F-19H, F-19I, F-20A, F-20B, and F-20G
of Supplemental Structural Inspection Document (SSID) D6-35022, Revision G, dated December 2000.
This AMOC is only for upper deck floor beam upper chords and straps that have been replaced in
accordance with this service bulletin. When this service bulletin specifies contacting Boeing for repair
instructions, the repair instructions must be approved by the FAA in accordance with paragraph (l) of
the AD. All provisions of AD 2004-07-22 R1 that are not specifically referenced in this paragraph remain
fully applicable and must be complied with accordingly.
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.
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### Page 23

Group 1:
Table 1: Upper Deck Floor Beam Upper Chord Replacement
Elapsed HoursTask HoursNumber of Per-
sons
Task
15.13121.008PART 1 - Access
40.00160.004PART 2 - Upper
Chord Removal and
Structure Inspection
(a)(a)(a)PART 3 - Upper
Chord Fabrication
and Installation
15.13 (b)121.00 (b)8PART 5 - Restora-
tion
70.25402.00TOTAL FOR EACH AIRPLANE
(a) Time to manufacture parts is not included in this estimate.
(b) Additional time to test systems will be dependant upon systems disturbed
during access or chord replacement.
Group 2:
Table 2: Upper Deck Floor Beam Upper Chord Replacement
Elapsed HoursTask HoursNumber of Per-
sons
Task
29.75238.008PART 1 - Access
40.00160.004PART 2 - Upper
Chord Removal and
Structure Inspection
(a)(a)(a)PART 3 - Upper
Chord Fabrication
and Installation
29.75 (b)238.00 (b)8PART 5 - Restora-
tion
99.50636.00TOTAL FOR EACH AIRPLANE
(a) Time to manufacture parts is not included in this estimate.
(b) Additional time to test systems will be dependant upon systems disturbed
during access or chord replacement.
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### Page 24

Group 3:
Table 3: Upper Deck Floor Beam Upper Chord Replacement
Elapsed HoursTask HoursNumber of Per-
sons
Task
15.13121.008PART 1 - Access
37.50150.004PART 2 - Upper
Chord Removal and
Structure Inspection
(a)(a)(a)PART 3 - Upper
Chord Fabrication
and Installation
15.13 (b)121.00 (b)8PART 5 - Restora-
tion
67.75392.00TOTAL FOR EACH AIRPLANE
(a) Time to manufacture parts is not included in this estimate.
(b) Additional time to test systems will be dependant upon systems disturbed
during access or chord replacement.
Group 4:
Table 4: Upper Deck Floor Beam Upper Chord Replacement
Elapsed HoursTask HoursNumber of Per-
sons
Task
29.75238.008PART 1 - Access
37.50150.004PART 2 - Upper
Chord Removal and
Structure Inspection
(a)(a)(a)PART 3 - Upper
Chord Fabrication
and Installation
29.75 (b)238.00 (b)8PART 5 - Restora-
tion
97.00626.00TOTAL FOR EACH AIRPLANE
(a) Time to manufacture parts is not included in this estimate.
(b) Additional time to test systems will be dependant upon systems disturbed
during access or chord replacement.
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### Page 25

Group 5:
Table 5: Upper Deck Floor Beam Upper Chord Replacement
Elapsed HoursTask HoursNumber of Per-
sons
Task
15.13121.008PART 1 - Access
80.00320.004PART 2 - Upper
Chord Removal and
Structure Inspection
(a)(a)(a)PART 3 - Upper
Chord Fabrication
and Installation
15.13 (b)121.00 (b)8PART 5 - Restora-
tion
110.25562.00TOTAL FOR EACH AIRPLANE
(a) Time to manufacture parts is not included in this estimate.
(b) Additional time to test systems will be dependant upon systems disturbed
during access or chord replacement.
Group 6:
Table 6: Upper Deck Floor Beam Upper Chord Replacement
Elapsed HoursTask HoursNumber of Per-
sons
Task
29.75238.008PART 1 - Access
55.00220.004PART 2 - Upper
Chord Removal and
Structure Inspection
(a)(a)(a)PART 3 - Upper
Chord Fabrication
and Installation
29.75 (b)238.00 (b)8PART 5 - Restora-
tion
114.50696.00TOTAL FOR EACH AIRPLANE
(a) Time to manufacture parts is not included in this estimate.
(b) Additional time to test systems will be dependant upon systems disturbed
during access or chord replacement.
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### Page 26

Group 1:
Table 7: After Replacement Inspections
Elapsed HoursTask HoursNumber of Per-
sons
Task
15.13121.008PART 1 - Access
20.0080.004PART 4 - After Re-
placement Inspec-
tions
15.13 (a)121.00 (a)8PART 5 - Restora-
tion
50.25322.00TOTAL FOR EACH AIRPLANE
(a) Additional time to test systems will be dependant upon systems disturbed
during access or inspections.
Group 2:
Table 8: After Replacement Inspections
Elapsed HoursTask HoursNumber of Per-
sons
Task
29.75238.008PART 1 - Access
20.0080.004PART 4 - After Re-
placement Inspec-
tions
29.75 (a)238.00 (a)8PART 5 - Restora-
tion
79.50556.00TOTAL FOR EACH AIRPLANE
(a) Additional time to test systems will be dependant upon systems disturbed
during access or inspections.
Group 3:
Table 9: After Replacement Inspections
Elapsed HoursTask HoursNumber of Per-
sons
Task
15.13121.008PART 1 - Access
18.7575.004PART 4 - After Re-
placement Inspec-
tions
15.13 (a)121.00 (a)8PART 5 - Restora-
tion
49.00317.00TOTAL FOR EACH AIRPLANE
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### Page 27

Group 3:
Table 9: After Replacement Inspections
Elapsed HoursTask HoursNumber of Per-
sons
Task
(a) Additional time to test systems will be dependant upon systems disturbed
during access or inspections.
Group 4:
Table 10: After Replacement Inspections
Elapsed HoursTask HoursNumber of Per-
sons
Task
29.75238.008PART 1 - Access
18.7575.004PART 4 - After Re-
placement Inspec-
tions
29.75 (a)238.00 (a)8PART 5 - Restora-
tion
78.25551.00TOTAL FOR EACH AIRPLANE
(a) Additional time to test systems will be dependant upon systems disturbed
during access or inspections.
Group 5:
Table 11: After Replacement Inspections
Elapsed HoursTask HoursNumber of Per-
sons
Task
15.13121.008PART 1 - Access
40.00160.004PART 4 - After Re-
placement Inspec-
tions
15.13 (a)121.00 (a)8PART 5 - Restora-
tion
70.25402.00TOTAL FOR EACH AIRPLANE
(a) Additional time to test systems will be dependant upon systems disturbed
during access or inspections.
Group 6:
Table 12: After Replacement Inspections
Elapsed HoursTask HoursNumber of Per-
sons
Task
29.75238.008PART 1 - Access
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### Page 28

Group 6:
Table 12: After Replacement Inspections
Elapsed HoursTask HoursNumber of Per-
sons
Task
27.50110.004PART 4 - After Re-
placement Inspec-
tions
29.75 (a)238.00 (a)8PART 5 - Restora-
tion
87.00586.00TOTAL FOR EACH AIRPLANE
(a) Additional time to test systems will be dependant upon systems disturbed
during access or inspections.
H. Weight and Balance Changes
None.
I. Electrical Load Data
Not applicable.
J. References
1. Existing Data:
a. 747-100/200/300 Aircraft Maintenance Manual (AMM) 25-16-01, 25-21-04, 25-22-01, 25-23-01,
25-24-02, 25-24-16, 25-24-18, 25-24-25, 25-24-33, 25-24-47, 25-25-01, 25-27-05, 25-28-07,
25-28-10, 25-31-05, 25-31-06, 25-33-12, 25-40-03, 53-21-02
b. 747 Non-Destructive Testing (NDT) Manual, Part 6, 51-00-00.
c. Boeing Service Bulletin 747-53-2272, FUSELAGE-Nose Section 41 Body Frame Structure
Replacement and Reinforcement
d. Boeing Service Bulletin 747-53A2452, FUSELAGE - Floors - Upper Deck Floor Beam Upper
Chord Inspection and Repair
e. Standard Overhaul Practices Manual (SOPM) 20-43-03, 20-50-03.
f. Supplemental Structural Inspection Document (SSID) D6-35022, Revision G.
g. Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2004-07-22 R1, 2005-20-29
h. Boeing Service Letter 747-SL-51-048, 747-SL-53-088A
i. Standard Overhaul Practices Manual (SOPM) 20-41-02, 20-43-03, 20-50-19
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### Page 29

2. Data Supplied with this Service Bulletin:
None.
3. Installation Drawings Used in the Preparation of this Service Bulletin:
TitleDrawing Number
FLOOR BEAM INSTL - CREW COMPARTMENT - STA 38065B10929
FLOOR BEAM INSTL - CREW COMPARTMENT - STA 40065B10930
FLOOR BEAM INSTL - CREW COMPARTMENT - STA 42065B10931
FLOOR BEAM INSTL - CREW COMPARTMENT - STA 44065B10932
FLOOR BEAM INSTL - CREW COMPARTMENT - STA 46065B10933
FLOOR BEAM INSTL - CREW COMPARTMENT - STA 48065B10934
FLOOR BEAM INSTL - CREW COMPARTMENT - STA 50065B10935
FLOOR BEAM INSTL - CREW COMPARTMENT - STA 52065B10936
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 54065B06818
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 56065B06819
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 58065B06820
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 60065B06821
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 62065B06822
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 64065B06823
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 66065B06824
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 68065B06825
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 70065B06826
FLOOR BEAM INSTL - UPPER DECK STATION 70065BE0212
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 72065B06827
FLOOR BEAM INSTL - UPPER DECK STATION 72065BE0213
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 74065B06828
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 76065B37122
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 78065B37123
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 80065B25634
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 82065B25635
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 84065B25636
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 86065B25637
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 98065B25643
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 100065B25644
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### Page 30

TitleDrawing Number
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 102065B25645
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 104065B25646
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 106065B25647
FLOOR BEAM INSTL - UPPER DECK, FUSELAGE STATION 108065B25648
FLOOR BEAM INSTL - STATEROOM, FUSELAGE STATION 110065B25649
The table above lists applicable drawings used to prepare this service bulletin. The drawings may
not be applicable to all airplane configurations or operators.
K. Publications Affected
1. Publications:
None.
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. DTI requirements for the structure affected
are contained in Paragraph 1.E., Compliance of this service bulletin.
L. Interchangeability and Intermixability of Parts
Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts.
M. Software Accomplishment Summary
Not affected.
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2.    MATERIAL INFORMATION
A. Material - Price and Availability
The operator can supply the parts and materials shown in Paragraph 2.C., Parts Necessary For Each
Airplane. As an alternative, operators can purchase the parts from Boeing Spares. This service bulletin
does not show the Boeing price and supply data.
B. Industry Support Information
Boeing warranty remedies are not available for the configuration changes given in this service bulletin.
C. Parts Necessary for Each Airplane
1. Kits/Parts:
None.
2. Parts and Materials Supplied by the Operator:
NOTE: Fastener quantities shown in the material tables do not include excess. Operators should
make sure excess fasteners are available as they feel necessary.
NOTE: For Section 41 (STA 340 - 520), if frames have previously been replaced in accordance
with Section 41 modification Service Bulletin 747-53-2272, then additional oversize
fasteners will be needed where holes have already been oversized in the frames.
NOTE: The replacement fasteners listed in this revision are current specifications. Any fasteners
and their associated oversizes equivalent to the original production fasteners, as outlined
in the D-590 substitution document are acceptable. Also, replacement fasteners listed
are based on Appendix B - Fastener Replacement Guide.
NOTE: For material tables that refer to drawing installation numbers, refer to Appendix A for the
applicable drawing installation.
Upper Deck Floor Beam Station (STA) 380
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10929-18Upper Chord165B10929-18
(a) (b)65B10929-24Filler (Strap) L/H165B10929-24
(a) (b)65B10929-26Filler (Strap) R/H165B10929-26
(c) (d)BACB30MY6K*Bolt7BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt3BACB30NX6K5X
(c)-Collar10BACC30BH6
(c) (d)BACR15BB5D*Rivet138BACR15BB5D5C or
BACR15BB6D*C
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Upper Deck Floor Beam Station (STA) 380
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACR15BB5D*Rivet74BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet3BACR15BB5D7C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet30BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet22BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet9BACR15BB6D8C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet3BACR15BB6D9C or
BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 1-4:
Upper Deck Floor Beam Station (STA) 400
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10930-25 or
65B10930-55 or
65B10930-96
Upper Chord165B10930-25 or
65B10930-55 or
65B10930-96
(a) (b)65B10930-11 or
65B10930-56 or
65B10930-199
Filler (Strap) or Angle L/H165B10930-11 or
65B10930-56 or
65B10930-199
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Group 1-4:
Upper Deck Floor Beam Station (STA) 400
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10930-13 or
65B10930-154
Angle R/H165B10930-13 or
65B10930-154
(c) (d)BACB30MY6K*Bolt1BACB30NX6K3X
(c) (d)BACB30MY6K* or
BACB30MY6C*
Bolt1BACB30NX6K4X
(c) (d)BACB30MY6K* or
BACB30MY6C*
Bolt9BACB30NX6K5X
(c)-Collar11BACC30BH6
(c) (d)BACR15BA5D*Rivet22BACR15BA5D9C or
BACR15BA6D*C
(c) (d)BACR15BA6D*Rivet6BACR15BA6D9C or
BACR15BA7D*C
(c) (d)BACR15BB5D*Rivet149BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet6BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet2BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet23BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet8BACR15BB6D8C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet2BACR15BB6D9C or
BACR15BB7D*C
(c) (d)BACR15BB8D*Rivet2BACR15BB8D9C or
BACR15BB9D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
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ALERTALERT

### Page 34

Group 1-4:
Upper Deck Floor Beam Station (STA) 400
NotesExisting Part NumberNameQTYPart Number /
Specification
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 5-6:
Upper Deck Floor Beam Station (STA) 400
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10930-115 or
65B10930-25
Upper Chord165B10930-115 or
65B10930-25
(a) (b)65B10930-11Filler (Strap) L/H165B10930-11
(a) (b)65B10930-13Angle R/H165B10930-13
(c) (d)BACB30MY6K*Bolt6BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt10BACB30NX6K5X
(c)-Collar16BACC30BH6
(c) (d)BACR15BB5D*Rivet146BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet4BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet13BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet8BACR15BB6D8C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet2BACR15BB6D9C or
BACR15BB7D*C
(c) (d)BACR15BB8D*Rivet2BACR15BB8D8C or
BACR15BB9D*C
(c) (d)BACR15BB8D*Rivet2BACR15BB8D9C or
BACR15BB9D*C
(c) (d)BACR15CE5D*Rivet1BACR15GF5D6 or
BACR15GF6D*
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
34 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 35

Group 5-6:
Upper Deck Floor Beam Station (STA) 400
NotesExisting Part NumberNameQTYPart Number /
Specification
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Upper Deck Floor Beam Station (STA) 420 on airplanes that use one of the following drawing installations:
65B10931-17, -185, -231, -49, or -69
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10931-20 or
65B10931-53 or
65B10931-193 or
65B10931-233
Upper Chord165B10931-20 or
65B10931-53 or
65B10931-193 or
65B10931-233
(a) (b)65B10931-13 or
65B10931-54
Filler (Strap) L/H165B10931-13 or
65B10931-54
(a) (b)65B10931-15Filler (Strap) R/H165B10931-15
(c) (d)BACB30MY8K*Bolt6BACB30MY8K4X
(c) (d)BACB30MY8K*Bolt2BACB30MY8K5X
(c) (d)BACB30MY8K*Bolt4BACB30MY8K6X
(c) (d)BACB30GP6*Bolt1BACB30NX6K3
(c) (d)BACB30MY6K*Bolt12BACB30NX6K4X
(c)-Collar13BACC30BH6
(c)-Collar12BACC30M8
(c) (d)BACR15BB5D*Rivet134BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet34BACR15BB5D6C or
BACR15BB6D*C
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
35 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 36

Upper Deck Floor Beam Station (STA) 420 on airplanes that use one of the following drawing installations:
65B10931-17, -185, -231, -49, or -69
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACR15BB5D*Rivet8BACR15BB5D7C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet10BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet5BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet13BACR15BB6D8C or
BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Upper Deck Floor Beam Station (STA) 420 on airplanes that use one of the following drawing installations:
65B10931-134, -248, or -74
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10931-112 or
65B10931-139
Upper Chord165B10931-112 or
65B10931-139
(a) (b)65B10931-122 or
65B10931-141
Filler (Strap) L/H165B10931-122 or
65B10931-141
(a) (b)65B10931-120Filler (Strap) R/H165B10931-120
(c) (d)BACB30MY8C*Bolt5BACB30MY8K10X
(c) (d)BACB30MY8C*Bolt1BACB30MY8K11X
(c) (d)BACB30MY8C*Bolt2BACB30MY8K6X
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
36 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 37

Upper Deck Floor Beam Station (STA) 420 on airplanes that use one of the following drawing installations:
65B10931-134, -248, or -74
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACB30MY8C*Bolt3BACB30MY8K7X
(c) (d)BACB30MY8C*Bolt8BACB30MY8K8X
(c) (d)BACB30MY8C*Bolt18BACB30MY8K9X
(c) (d)BACB30GW8*Bolt1BACB30MY8K9X
(c) (d)BACB30MY8C*Bolt1BACB30MY8K11X
(c) (d)BACB30MY6C*Bolt6BACB30NX6K5X
(c) (d)BACB30MY6C*Bolt36BACB30NX6K6X
(c) (d)BACB30MY6C*Bolt18BACB30NX6K7X
(c) (d)BACB30MY6C*Bolt12BACB30NX6K8X
(c)-Collar72BACC30BH6
(c)-Collar38BACC30M8
(c) (d)BACR15BB6D*Rivet1BACR15BB6D11C
or BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet55BACR15BB6D8C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet26BACR15BB6D9C or
BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
37 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 38

Upper Deck Floor Beam Station (STA) 420 on airplanes that use one of the following drawing installations:
65B10931-142
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10931-144Upper Chord165B10931-144
(a) (b)65B10931-149Filler (Strap) L/H165B10931-149
(a) (b)65B10931-150Filler (Strap) R/H165B10931-150
(c) (d)BACB30MY8K*Bolt4BACB30MY8K5X
(c) (d)BACB30MY6K*Bolt6BACB30NX6K3X
(c) (d)BACB30MY6K*Bolt6BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt8BACB30NX6K5X
(c) (d)BACB30MY6K*Bolt6BACB30NX6K6X
(c) (d)BACB30MY6K*Bolt2BACB30NX6K8X
(c) (d)BACB30MY6K*Bolt2BACB30NX6K10X
(c) (d)BACB30MY5K*Bolt5BACB30MY6K5
(c) (d)BACB30MY5K*Bolt1BACB30MY6K6
(c)-Collar30BACC30BH6
(c)-Collar6BACC30M6
(c)-Collar4BACC30M8
(c) (d)BACR15BB5D*Rivet172BACR15BB5D7C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet2BACR15BB5D8C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet13BACR15BB5D9C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet1BACR15BB5D11C
or BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet5BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet6BACR15BB6D8C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet3BACR15BB6D9C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet6BACR15BB6D10C
or BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet1BACR15BB6D11C
or BACR15BB7D*C
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
38 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 39

Upper Deck Floor Beam Station (STA) 420 on airplanes that use one of the following drawing installations:
65B10931-142
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACR15CE5D*Rivet2BACR15GF5D7 or
BACR15GF6D*
(c) (d)BACR15CE6D*Rivet1BACR15GF6D8 or
BACR15GF7D*
(c) (d)BACR15CE6D*Rivet1BACR15GF6D10 or
BACR15GF7D*
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 1-2, 5-6:
Upper Deck Floor Beam Station (STA) 440 on airplanes that use one of the following drawing installations:
65B10932-14 or -153
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10932-19 or
65B10932-163
Upper Chord165B10932-19 or
65B10932-163
(a) (b)65B10932-21Filler (Strap) L/H165B10932-21
(a) (b)65B10932-22Filler (Strap) R/H165B10932-22
(c) (d)BACB30MY8K*Bolt4BACB30MY8K6X
(c) (d)BACB30MY6K*Bolt2BACB30NX6K5X
(c)-Collar2BACC30BH6
(c)-Collar4BACC30M8
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
39 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 40

Group 1-2, 5-6:
Upper Deck Floor Beam Station (STA) 440 on airplanes that use one of the following drawing installations:
65B10932-14 or -153
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACR15BB5D*Rivet138BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet34BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet2BACR15BB6D10C
or BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet1BACR15BB6D11C
or BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet8BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet4BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet19BACR15BB6D8C or
BACR15BB7D*C
(c) (d)BACR15CE6D*Rivet2BACR15GF6D11 or
BACR15GF7D*
(c) (d)BACR15CE6D*Rivet2BACR15GF6D12 or
BACR15GF7D*
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
40 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 41

Group 1-2, 5-6:
Upper Deck Floor Beam Station (STA) 440 on airplanes that use one of the following drawing installations:
65B10932-5001, -5002, -5003, -5004, -5005, or -5006
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10932-135 or
65B10932-138 or
65B10932-143 or
65B10932-148 or
65B10932-149 or
65B10932-552
Upper Chord165B10932-135 or
65B10932-138 or
65B10932-143 or
65B10932-148 or
65B10932-149 or
65B10932-552
(a) (b)65B25842-19Angle L/H165B25842-19
(a) (b)65B25842-18Angle R/H165B25842-18
(c) (d)BACB30MY5K*Bolt67BACB30MY6K4
(c) (d)BACB30MY8K*Bolt4BACB30MY8K6X
(c) (d)BACB30NW6K*Bolt5BACB30NW6K5X
(c) (d)BACB30NW6K*Bolt49BACB30NW6K6X
(c) (d)BACB30MY6K*Bolt11BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt13BACB30NX6K5X
(c) (d)BACB30MY6K*Bolt9BACB30NX6K6X
(c) (d)BACB30MY6K*Bolt1BACB30NX6K8X
(c)-Collar121BACC30M6
(c)-Collar4BACC30M8
(c)-Collar34BACC30BH6
(c) (d)BACR15BA5D*Rivet1BACR15BA5D6C or
BACR15BA6D*C
(c) (d)BACR15BA8D*Rivet3BACR15BA8D10C
or BACR15BA9D*C
(c) (d)BACR15BB5D*Rivet96BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet13BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet11BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet4BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet1BACR15BB6D8C or
BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
41 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 42

Group 1-2, 5-6:
Upper Deck Floor Beam Station (STA) 440 on airplanes that use one of the following drawing installations:
65B10932-5001, -5002, -5003, -5004, -5005, or -5006
NotesExisting Part NumberNameQTYPart Number /
Specification
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 1-2, 5-6:
Upper Deck Floor Beam Station (STA) 440 on airplanes that use one of the following drawing installations:
65B10932-49 and -50
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10932-57Upper Chord - Left165B10932-57
(a) (b)65B10932-58Upper Chord - Right165B10932-58
(a) (b)65B10932-21Filler (Strap) L/H165B10932-21
(a) (b)65B10932-22Filler (Strap) R/H165B10932-22
(c) (d)BACB30MY6C*Bolt7BACB30MY6K3X
(c) (d)BACB30MY6C*Bolt14BACB30MY6K4X
(c) (d)BACB30MY6C*Bolt4BACB30MY6K5X
(c) (d)BACB30MY6C*Bolt8BACB30MY6K6X
(c) (d)BACB30MY8C*Bolt2BACB30MY8K4X
(c) (d)BACB30MY8C*Bolt2BACB30MY8K5X
(c) (d)BACB30NW6C*Bolt14BACB30NW6K4X
(c) (d)BACB30NW8C*Bolt4BACB30NW8K4X
(c)-Collar47BACC30M6
(c)-Collar8BACC30M8
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
42 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 43

Group 1-2, 5-6:
Upper Deck Floor Beam Station (STA) 440 on airplanes that use one of the following drawing installations:
65B10932-49 and -50
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACR15BB5D*Rivet64BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet3BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet8BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15CE6D*Rivet2BACR15GF6D11 or
BACR15GF7D*
(c) (d)BACR15CE6D*Rivet2BACR15GF6D12 or
BACR15GF7D*
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 5:
Upper Deck Floor Beam Station (STA) 460
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10933-110 or
65B10933-133 or
65B10933-137 or
65B10933-141 or
65B10933-142 or
65B10933-143
Upper Chord165B10933-110 or
65B10933-133 or
65B10933-137 or
65B10933-141 or
65B10933-142 or
65B10933-143
(a) (b)65B25842-8Angle L/H165B25842-8
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
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ALERTALERT

### Page 44

Group 5:
Upper Deck Floor Beam Station (STA) 460
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B25842-7Angle R/H165B25842-7
(c) (d)BACB30MY5K*Bolt10BACB30MY6K4
(c) (d)BACB30MY5K*Bolt8BACB30MY6K5
(c) (d)BACB30MY8K*Bolt4BACB30MY8K6X
(c) (d)BACB30NW6K*Bolt4BACB30NW6K4X
(c) (d)BACB30NW6K*Bolt6BACB30NW6K5X
(c) (d)BACB30NW6K*Bolt44BACB30NW6K6X
(c) (d)BACB30MY6K*Bolt51BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt24BACB30NX6K5X
(c) (d)BACB30MY6K*Bolt13BACB30NX6K6X
(c)-Collar160BACC30M6
(c)-Collar4BACC30M8
(c) (d)BACR15BA5D*Rivet1BACR15BA5D7C or
BACR15BA6D*C
(c) (d)BACR15BA6D*Rivet9BACR15BA6D9C or
BACR15BA7D*C
(c) (d)BACR15BB5D*Rivet125BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet1BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet13BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet9BACR15BB6D7C or
BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
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BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 45

Group 5:
Upper Deck Floor Beam Station (STA) 460
NotesExisting Part NumberNameQTYPart Number /
Specification
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 5:
Upper Deck Floor Beam Station (STA) 480
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10934-124 or
65B10934-151 or
65B10934-165 or
65B10934-166
Upper Chord165B10934-124 or
65B10934-151 or
65B10934-165 or
65B10934-166
(a) (b)65B25842-6 or
65B25842-11
Angle L/H165B25842-6 or
65B25842-11
(a) (b)65B25842-5Angle R/H165B25842-5
(c) (d)BACB30MY5K*Bolt43BACB30MY6K4
(c) (d)BACB30MY5K*Bolt2BACB30MY6K5
(c) (d)BACB30MY5K*Bolt2BACB30MY6K6
(c) (d)BACB30NW5K*Bolt7BACB30NW6K4
(c) (d)BACB30NW6K*Bolt10BACB30NW6K4X
(c) (d)BACB30NW6K*Bolt36BACB30NW6K6X
(c) (d)BACB30MY6K*Bolt27BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt2BACB30NX6K5X
(c) (d)BACB30MY6K*Bolt10BACB30NX6K6X
(c) (d)BACB30MY6K*Bolt1BACB30NX6K7X
(c)-Collar100BACC30M6
(c)-Collar40BACC30BH6
(c) (d)BACR15BA3D*Rivet2BACR15BA3D4C or
BACR15BA4D*C
(c) (d)BACR15BA6D*Rivet14BACR15BA6D9C or
BACR15BA7D*C
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
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ALERTALERT

### Page 46

Group 5:
Upper Deck Floor Beam Station (STA) 480
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACR15BB5D*Rivet130BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet6BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet16BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet3BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet1BACR15BB6D8C or
BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 5:
Upper Deck Floor Beam Station (STA) 500
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10935-123 or
65B10935-126
Upper Chord165B10935-123 or
65B10935-126
(a) (b)65B25842-12Reinforcement Angle L/H165B25842-12
(a) (b)65B25842-13Reinforcement Angle R/H165B25842-13
(c) (d)BACB30MY10K*Bolt2BACB30MY10K10X
(c) (d)BACB30MY5K*Bolt13BACB30MY6K4
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
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BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 47

Group 5:
Upper Deck Floor Beam Station (STA) 500
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACB30MY8K*Bolt2BACB30MY8K5X
(c) (d)BACB30NW6K*Bolt37BACB30NW6K6X
(c) (d)BACB30MY6K*Bolt1BACB30NX6K3X
(c) (d)BACB30MY6K*Bolt65BACB30NX6K3X
(c) (d)BACB30MY6K*Bolt14BACB30NX6K3X
(c)-Collar50BACC30M6
(c)-Collar80BACC30BH6
(c)-Collar2BACC30M8
(c)-Collar2BACC30M10
(c) (d)BACR15BB5D*Rivet136BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet13BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet17BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet4BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15CE5D*Rivet1BACR15GF5D5 or
BACR15GF6D*
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
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BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 48

Upper Deck Floor Beam Station (STA) 520 on airplanes that use one of the following drawing installations:
65B10936-10
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10936-12Upper Chord165B10936-12
(a) (b)65B10936-5Filler (Strap) L/H165B10936-5
(a) (b)65B10936-6Filler (Strap) R/H165B10936-6
(c) (d)BACB30FM6*Bolt24BACB30NX6K4X
(c) (d)BACB30FM6*Bolt6BACB30NX6K5X
(c)-Collar30BACC30BH6
(c) (d)MS20426D6Rivet1BACR15BA6D8C or
BACR15BA7D*C
(c) (d)BACR15BB5D*Rivet96BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet2BACR15BB5D7C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet2BACR15BB6D11C
or BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet40BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet58BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet2BACR15BB6D8C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet13BACR15BB6D9C or
BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
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BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 49

Upper Deck Floor Beam Station (STA) 520 on airplanes that use one of the following drawing installations:
65B10936-10
NotesExisting Part NumberNameQTYPart Number /
Specification
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Upper Deck Floor Beam Station (STA) 520 on airplanes that use one of the following drawing installations:
65B10936-5001, -5002, -5003, or -5005
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10936-119 or
65B10936-128 or
65B10936-122
Upper Chord165B10936-119 or
65B10936-128 or
65B10936-122
(a) (b)65B25842-15Angle L/H165B25842-15
(a) (b)65B25842-16Angle R/H165B25842-16
(c) (d)BACB30MY5K*Bolt28BACB30MY6K4
(c) (d)BACB30NW6K*Bolt20BACB30NW6K6X
(c) (d)BACB30MY6K*Bolt51BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt5BACB30NX6K5X
(c) (d)BACB30MY6K*Bolt16BACB30NX6K6X
(c)-Collar48BACC30M6
(c)-Collar72BACC30BH6
(c) (d)BACR15BB5D*Rivet139BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet13BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet16BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet6BACR15BB6D7C or
BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
49 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 50

Upper Deck Floor Beam Station (STA) 520 on airplanes that use one of the following drawing installations:
65B10936-5001, -5002, -5003, or -5005
NotesExisting Part NumberNameQTYPart Number /
Specification
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Upper Deck Floor Beam Station (STA) 520 on airplanes that use one of the following drawing installations:
65B10936-145, or -176
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10936-138Upper Chord165B10936-138
(a) (b)65B10936-150Reinforcement Angle L/H165B10936-150
(a) (b)65B10936-149Reinforcement Angle R/H165B10936-149
(c) (d)BACB30MY6K*Bolt2BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt12BACB30NX6K5X
(c) (d)BACB30MY6K*Bolt16BACB30NX6K6X
(c) (d)BACB30MY6K*Bolt9BACB30NX6K8X
(c)-Collar39BACC30BH6
(c) (d)BACR15BB5D*Rivet93BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet4BACR15BB5D7C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet25BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet39BACR15BB6D7C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet2BACR15BB6D8C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet47BACR15BB6D9C or
BACR15BB7D*C
(c) (d)BACR15CE5D*Rivet40BACR15GF6D11 or
BACR15GF7D*
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
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ALERTALERT

### Page 51

Upper Deck Floor Beam Station (STA) 520 on airplanes that use one of the following drawing installations:
65B10936-145, or -176
NotesExisting Part NumberNameQTYPart Number /
Specification
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Upper Deck Floor Beam Station (STA) 520 on airplanes that use one of the following drawing installations:
65B10936-48
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B10936-91Upper Chord165B10936-91
(a) (b)65B10936-93Filler (Strap) L/H165B10936-93
(a) (b)65B10936-92Filler (Strap) R/H165B10936-92
(c) (d)BACB30MY8C*Bolt4BACB30MY8K11X
(c) (d)BACB30MY8C*Bolt4BACB30MY8K8X
(c) (d)BACB30MY8C*Bolt18BACB30MY8K9X
(c) (d)BACB30NW6C*Bolt2BACB30NW6K6X
(c) (d)BACB30NW6C*Bolt2BACB30NW6K9X
(c) (d)BACB30NW8C*Bolt4BACB30NW8K10X
(c) (d)BACB30MY6C*Bolt36BACB30NX6K5X
(c) (d)BACB30MY6C*Bolt3BACB30NX6K6X
(c) (d)BACB30MY6C*Bolt31BACB30NX6K7X
(c) (d)BACB30MY6C*Bolt6BACB30NX6K8X
(c) (d)BACB30FM6*Bolt1BACB30NX6K8X
(c) (d)BACB30MB6*Bolt1BACB30NX6K9X
(c)-Collar4BACC30M6
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
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ALERTALERT

### Page 52

Upper Deck Floor Beam Station (STA) 520 on airplanes that use one of the following drawing installations:
65B10936-48
NotesExisting Part NumberNameQTYPart Number /
Specification
(c)-Collar26BACC30M8
(c)-Collar78BACC30BH6
(c) (d)BACR15BB6D*Rivet141BACR15BB6D9C or
BACR15BB7D*C
(c) (d)BACR15BB6D*Rivet5BACR15BB6D10C
or BACR15BB7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 1-4:
Upper Deck Floor Beam Station (STA) 540
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B06829-1 or
65B06818-50
Upper Chord165B06829-1 or
65B06818-50
(a) (b)65B06818-13Reinforcement Angle L/H165B06818-13
(a) (b)65B06818-14Reinforcement Angle R/H165B06818-14
(c) (d)BACB30FM5*Bolt8BACB30VT6K3
(c) (d)BACB30FM5*Bolt91BACB30VT6K4
(c) (d)BACB30FM5*Bolt18BACB30VT6K5
(c) (d)BACB30FM6*Bolt8BACB30NX6K3X
(c) (d)BACB30FM6*Bolt2BACB30NX6K4X
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
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ALERTALERT

### Page 53

Group 1-4:
Upper Deck Floor Beam Station (STA) 540
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACB30FM6*Bolt8BACB30NX6K5X
(c) (d)BACB30FN5*Bolt2BACB30NW6K4
(c) (d)BACB30MY8C*Bolt12BACB30MY8K7X
(c) (d)BACB30MY8C*Bolt4BACB30MY8K8X
(c) (d)BACB30LB6*Bolt8BACB30VW6A5UX
(c) (d)BACB30FM6*Bolt2BACB30NX6K9X
(c) (d)BACB30FN6*Bolt8BACB30NX6K9X
(c) (d)BACB30FN6*Bolt12BACB30NW6K5X
(c) (d)BACB30FN6*Bolt14BACB30NW6K6X
(c)-Collar20BACC30BH6
(c)-Collar117BACC30BL6
(c)-Collar36BACC30M6
(c)-Collar16BACC30M8
(c) (d)MS20426D5Rivet1BACR15BA5D5C or
BACR15BA6D*C
(c) (d)BACR15BB5D*Rivet143BACR15BB5D5C or
BACR15BA6D*C
(c) (d)BACR15BB5D*Rivet31BACR15BB5D6C or
BACR15BA6D*C
(c) (d)BACR15BB5D*Rivet4BACR15BB5D7C or
BACR15BA6D*C
(c) (d)BACR15BA3B*Rivet12BACR15BA3D6C or
BACR15BA4D*C
(c) (d)MS20426D6Rivet2BACR15BA6D9C or
BACR15BA7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
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BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 54

Group 1-4:
Upper Deck Floor Beam Station (STA) 540
NotesExisting Part NumberNameQTYPart Number /
Specification
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 5-6:
Upper Deck Floor Beam Station (STA) 540
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B06818-65Upper Chord165B06818-65
(a) (b)65B06818-68Reinforcement Angle L/H165B06818-68
(a) (b)65B06818-69Reinforcement Angle R/H165B06818-69
(c) (d)BACB30MY5K*Bolt78BACB30MY6K4
(c) (d)BACB30MY5K*Bolt14BACB30MY6K5
(c) (d)BACB30MY6K*Bolt8BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt12BACB30NX6K5X
(c) (d)BACB30MY8K*Bolt14BACB30MY8K7X
(c) (d)BACB30MY8K*Bolt4BACB30MY8K8X
(c) (d)BACB30NW6K*Bolt8BACB30NW6K4X
(c) (d)BACB30NW6K*Bolt12BACB30NW6K5X
(c) (d)BACB30NW6K*Bolt14BACB30NW6K6X
(c)-Collar20BACC30BH6
(c)-Collar126BACC30M6
(c)-Collar16BACC30M8
(c) (d)BACR15BB5D*Rivet36BACR15BB5D5C or
BACR15BA6D*C
(c) (d)BACR15BB5D*Rivet128BACR15BB5D6C or
BACR15BA6D*C
(c) (d)BACR15BB5D*Rivet4BACR15BB5D7C or
BACR15BA6D*C
(c) (d)BACR15BB6D*Rivet2BACR15BB6D6C or
BACR15BA7D*C
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
54 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 55

Group 5-6:
Upper Deck Floor Beam Station (STA) 540
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACR15BB6D*Rivet6BACR15BB6D7C or
BACR15BA7D*C
(c) (d)BACR15BB6D*Rivet4BACR15BB6D8C or
BACR15BA7D*C
(c) (d)BACR15BA3D*Rivet4BACR15BA3D6C or
BACR15BA4D*C
(c) (d)BACR15BA6D*Rivet2BACR15BA6D9C or
BACR15BA7D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 1-4:
Upper Deck Floor Beam Station (STA) 560
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B06819-600 or
65B06819-601
Upper Chord165B06819-600 or
65B06819-601
(a) (b)65B06819-3Reinforcement Angle L/H165B06819-3
(a) (b)65B06819-4Reinforcement Angle R/H165B06819-4
(c) (d)BACB30FM5*Bolt8BACB30VT6K3
(c) (d)BACB30FM5*Bolt90BACB30VT6K4
(c) (d)BACB30FM5*Bolt18BACB30VT6K5
(c) (d)BACB30FM6*Bolt6BACB30NX6K3X
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
55 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 56

Group 1-4:
Upper Deck Floor Beam Station (STA) 560
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACB30FM6*Bolt20BACB30NX6K5X
(c) (d)BACB30FM6*Bolt1BACB30NX6K6X
(c) (d)BACB30FM6*Bolt1BACB30NX6K7X
(c) (d)BACB30FN5*Bolt2BACB30NW6K4
(c) (d)BACB30FN6*Bolt2BACB30NW6K3X
(c) (d)BACB30LB6*Bolt4BACB30VW6A5UX
(c) (d)BACB30MY8C*Bolt8BACB30MY8K7X
(c) (d)BACB30MY6K*Bolt1BACB30NX6K6X
(c) (d)BACB30MY6K*Bolt3BACB30NX6K7X
(c) (d)BACB30NW6K*Bolt1BACB30NW6K5X
(c) (d)BACB30FM6*Bolt2BACB30NX6K9X
(c) (d)BACB30FN6*Bolt39BACB30NW6K6X
(c) (d)BACB30MY8C*Bolt8BACB30MY8K8X
(c) (d)BACR15BB5D*Rivet139BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet63BACR15BB5D6C or
BACR15BB6D*C
(c) (d)MS20426D5Rivet1BACR15BA5D6C or
BACR15BB6D*C
(c) (d)BACR15BA3D*Rivet12BACR15BA3D6C or
BACR15BA4D*C
(c) (d)BACR15BA6D*Rivet5BACR15BA6D9C or
BACR15BA7D*C
(c)-Collar116BACC30BL6
(c)-Collar32BACC30BH6
(c)-Collar48BACC30M6
(c)-Collar16BACC30M8
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
56 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 57

Group 1-4:
Upper Deck Floor Beam Station (STA) 560
NotesExisting Part NumberNameQTYPart Number /
Specification
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 5-6:
Upper Deck Floor Beam Station (STA) 560
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B06819-38 or
65B26467-50 or
65B26467-56
Upper Chord165B06819-38 or
65B26467-50 or
65B26467-56
(a) (b)65B06819-41 or
65B26467-52
Reinforcement Angle L/H165B06819-41 or
65B26467-52
(a) (b)65B06819-42 or
65B26467-53
Reinforcement Angle R/H165B06819-42 or
65B26467-53
(c) (d)BACB30MY5K*Bolt2BACB30MY6K3
(c) (d)BACB30MY5K*Bolt80BACB30MY6K4
(c) (d)BACB30MY5K*Bolt14BACB30MY6K5
(c) (d)BACB30MY6K*Bolt12BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt8BACB30NX6K5X
(c) (d)BACB30MY6K*Bolt4BACB30NX6K6X
(c) (d)BACB30MY8K*Bolt18BACB30MY8K7X
(c) (d)BACB30NW6K*Bolt8BACB30NW6K4X
(c) (d)BACB30NW6K*Bolt12BACB30NW6K5X
(c) (d)BACB30NW6K*Bolt14BACB30NW6K6X
(c) (d)BACR15BB5D*Rivet23BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet145BACR15BB5D5C or
BACR15BB6D*C
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
57 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 58

Group 5-6:
Upper Deck Floor Beam Station (STA) 560
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACR15BA3D*Rivet4BACR15BA3D6C or
BACR15BA4D*C
(c) (d)BACR15BA6D*Rivet2BACR15BA6D9C or
BACR15BA7D*C
(c)-Collar24BACC30BH6
(c)-Collar130BACC30M6
(c)-Collar18BACC30M8
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 1-4:
Upper Deck Floor Beam Station (STA) 580
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B06820-7 or
65B06820-37
Upper Chord165B06820-7 or
65B06820-37
(a) (b)65B06820-3Reinforcement Angle L/H165B06820-3
(a) (b)65B06820-4Reinforcement Angle R/H165B06820-4
(c) (d)BACB30MY8C*Bolt12BACB30MY8K7X
(c) (d)BACB30MY8C*Bolt4BACB30MY8K8X
(c) (d)BACB30FN5*Bolt2BACB30NW5K4X
(c) (d)BACB30FM5*Bolt8BACB30VT6K3
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
58 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 59

Group 1-4:
Upper Deck Floor Beam Station (STA) 580
NotesExisting Part NumberNameQTYPart Number /
Specification
(c) (d)BACB30FM5*Bolt92BACB30VT6K4
(c) (d)BACB30FM5*Bolt16BACB30VT6K5
(c) (d)BACB30FM6*Bolt10BACB30NX6K3X
(c) (d)BACB30VT6K*Bolt8BACB30NX6K3X
(c) (d)BACB30FM6*Bolt14BACB30NX6K5X
(c) (d)BACB30FN6*Bolt10BACB30NW6K4X
(c) (d)BACB30FN6*Bolt30BACB30NW6K6X
(c)-Collar32BACC30BH6
(c)-Collar116BACC30BL6
(c)-Collar2BACC30M5
(c)-Collar40BACC30M6
(c)-Collar16BACC30M8
(c) (d)BACR15BB5D*Rivet135BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet28BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet2BACR15BB5D7C or
BACR15BB6D*C
(c) (d)BACR15BA5D*Rivet1BACR15BA5D5C or
BACR15BA6D*C
(c) (d)BACR15BA6D*Rivet4BACR15BA6D9C or
BACR15BA7D*C
(c) (d)BACR15BA3B*Rivet12BACR15BA3D6C or
BACR15BA4D*C
(e)-Chemical Conversion Coating4 OuncesType 2, Class A
(f)-Primer1/4 PintBMS 10-11, Type I
(f)-Sealant4 OuncesBMS 5-95, Class B
(f)-Corrosion Inhibiting Compound8 OuncesBMS 3-23, Type II,
Class 2
(a) Fabricate a new part. Refer to APPENDIX A.
(b) Discard the existing part.
(c) Refer to 747 Structural Repair Manual Chapter 51 for alternative fasteners.
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
59 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

### Page 60

Group 1-4:
Upper Deck Floor Beam Station (STA) 580
NotesExisting Part NumberNameQTYPart Number /
Specification
(d) Use oversize bolts. Use oversize rivets when the rivet hole in the web or frame must be oversized to
correct damage or misalignment. At locations where a larger than original rivet will be installed, verify
grip length on installation.
(e) Refer to SOPM 20-43-03 for supplier data.
(f) See the Qualified Products List at the end of the Boeing Material Specification (BMS) for supplier data.
Group 5-6:
Upper Deck Floor Beam Station (STA) 580
NotesExisting Part NumberNameQTYPart Number /
Specification
(a) (b)65B06820-26Upper Chord165B06820-26
(a) (b)65B06820-29Reinforcement Angle L/H165B06820-29
(a) (b)65B06820-30Reinforcement Angle R/H165B06820-30
(c) (d)BACB30MY5K*Bolt80BACB30MY6K4
(c) (d)BACB30MY5K*Bolt14BACB30MY6K5
(c) (d)BACB30MY6K*Bolt8BACB30NX6K4X
(c) (d)BACB30MY6K*Bolt12BACB30NX6K5X
(c) (d)BACB30MY8K*Bolt14BACB30MY8K7X
(c) (d)BACB30MY8K*Bolt4BACB30MY8K8X
(c) (d)BACB30NW6K*Bolt8BACB30NW6K4X
(c) (d)BACB30NW6K*Bolt12BACB30NW6K5X
(c) (d)BACB30NW6K*Bolt14BACB30NW6K6X
(c)-Collar20BACC30BH6
(c)-Collar128BACC30M6
(c)-Collar18BACC30M8
(c) (d)BACR15BB5D*Rivet146BACR15BB5D5C or
BACR15BB6D*C
(c) (d)BACR15BB5D*Rivet14BACR15BB5D6C or
BACR15BB6D*C
(c) (d)BACR15BB6D*Rivet6BACR15BB6D6C or
BACR15BB7D*C
(c) (d)BACR15BA6D*Rivet2BACR15BA6D9C or
BACR15BA7D*C
Export Controlled ECCN: 9E991 - BOEING
PROPRIETARY - Copyright © Unpublished
Work - See page 1 for details.
Original Issue: June 22, 2012
747-53A2852
60 of 189
BOEING SERVICE BULLETIN 747-53A2852
ALERTALERT

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