# Boeing Alert Requirements Bulletin 767-57A0148 RB: No revision named, part 3 of 3

- Rights: © The Boeing Company. Filed by the FAA in regulations.gov docket FAA-2025-0618; AD 2026-05-07 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Boeing Alert Requirements Bulletin 767-57A0148 RB](https://openairdocs.org/service-documents/boeing/767-57a0148-rb.md)
- Title as filed: 767-57A0148_RB_original_Part3
- Pages: 56
- PDF: https://openairdocs.org/files/sha256/05/5f/055feabc6f63b02bd61474b78c10d0aab1db317fb963c14f1c85d1baebac95c5
- Page: https://openairdocs.org/service-documents/boeing/767-57a0148-rb/file/055feabc6f63

## Text

Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
RADIUS
25 - RADIUS  FILLER "L"
(5X7) RADIUS  FILLER "I"  ' FILLER "K"  250
FILLER J
FILLER 'O'  5
RADIUS
2 € 10 RADIUS  FILLER "N"  FWD  FILLER "P"
2 5 10 RADIUS  'FILLER "M"
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 one side of the airplane.
Step  Task  Name  Identification  Qty  More Data
Locate  FITTING, UNDER-  111T4020U9  1
WING LONGERON, LH
Locate  FITTING, INTERNAL  1
BATHTUB
Locate  SHIM, LAMINATED  BACS40R018B022F  1  (a) Shim A.
Locate  SHIM, LAMINATED  BACS40R021C037F  1  (a) Shim B.
Locate  SHIM, LAMINATED  BACS40R014C022F  1  (a) Shim C.
Locate  SHIM, LAMINATED  BACS40R025C063F  2  (a) (p) Shim D.
Locate  RADIUS FILLER  16  (b)
Drill  HOLE  (c)(d) Drill and ream
to final hole size.
Refer to the fastener
code table.
FIGURE 23: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U9 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 3 OF 8)
Original Issue: October 10, 2024
767-57A0148 RB
Export Controlled ECCN: 9E991
See page 1 for details  361 of 416

### Page 2

More DataQtyIdentificationNameTaskStep
(c)(d)(e) Drill and
ream to final hole
size. Refer to the
fastener code table.
41-HOLEDrill4
(f)16-RADIUS FILLERRemove / Keep5
Shim A.1BACS40R018B022FSHIM, LAMINATEDRemove / Keep
Shim B.1BACS40R021C037FSHIM, LAMINATEDRemove / Keep
Shim C.1BACS40R014C022FSHIM, LAMINATEDRemove / Keep
(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDRemove / Keep
-1-FITTING, INTERNAL
BATHTUB
Remove / Keep
-1111T4020U9FITTING, UNDER-
WING LONGERON, LH
Remove / Keep
Clean and deburr all
structure.
--STRUCTUREClean/Deburr
(g)1111T4020U9FITTING, UNDER-
WING LONGERON, LH
Install (New)6
(h)12-RADIUS FILLERInstall (Kept)7
(i) Refer to the fas-
tener code table.
34-FASTENERInstall (New)8
(j) Shim A.1BACS40R018B022FSHIM, LAMINATEDInstall (Kept)9
(j) Shim B.1BACS40R020C032FSHIM, LAMINATEDInstall (Kept)
(j) Shim C.1BACS40R014C022FSHIM, LAMINATEDInstall (Kept)
(j)1-FITTING, INTERNAL
BATHTUB
Install (Kept)
-1-TEMPORARY TEN-
SION BOLT
Install (New)
(k)4-RADIUS FILLERInstall (Kept)10
(l) Refer to the fas-
tener code table.
8-FASTENERInstall (New)11
FIGURE 23: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U9 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 4 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
362 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 3

More DataQtyIdentificationNameTaskStep
-1-TEMPORARY TEN-
SION BOLT
Remove12
Ream and deburr
the tension bolt hole
to final hole size.
Refer to the fastener
code table.
1-HOLEReam
(l) Refer to the fas-
tener code table.
1-FASTENERInstall (New)
(m)(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDInstall (Kept)13
(l) Refer to the fas-
tener code table.
3-FASTENERInstall (New)14
(n)5 OzBMS 5-45SEALANTApply15
(o)5 OzBMS 5-95SEALANTApply16
(a) Delaminate and taper shim as required to get a 0.005 inch maximum gap.
(b) If a radius filler was removed from locations "A" through "P". Locate in the recorded orientation from re-
moval.
(c) Keep a minimum of 1.7D edge margin at all fastener locations on the underwing longeron fitting.
(d) For existing fastener that is nominal, first, or second oversized, install the same type and size fastener if
open hole HFEC confirms crack-free condition.
(e) Oversizing to second oversize fastener requires high interference cold-working. Cold work the hole in
accordance with 767-400ER SRM 51-40-09.
(f) If a radius filler was removed from locations "A" through "P". Record the orientation of the radius filler at
each location for re-installation.
(g) Apply BMS 5-95 faying surface seal to the mating surface of the lower panel and the underwing longeron
fitting. Refer to SOPM 20-50-19 as an accepted procedure.
(h) If a radius filler was removed from locations "C" through "L", "O", and "P". Locate in the recorded orientation
from removal.
(i) Install the fasteners wet with BMS 5-45 to partially install the underwing longeron fitting. Refer to SOPM
20-50-19, and 767-400ER SRM 51-40-02 as accepted procedures.
Do not install fasteners common to the internal bathtub fitting or the three forward fasteners that are
common to the underwing longeron fitting.
(j) Apply BMS 5-45 faying surface seal. Refer to SOPM 20-50-19 as an accepted procedure.
(k) If a radius filler was removed from locations "A", "B", "M", and "N". Install in the recorded orientation.
(l) Install fasteners wet with BMS 5-45. Refer to SOPM 20-50-19 as an accepted procedure.
(m) Apply BMS 5-95 faying surface seal to each shim. Refer to SOPM 20-50-19 as an accepted procedure.
FIGURE 23: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U9 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 5 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
363 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 4

More DataQtyIdentificationNameTaskStep
(n) Apply cap seal to wing tank fasteners internally with BMS 5-45. Refer to 767 AMM 28-11-00 as an accepted
procedure.
(o) Apply BMS 5-95 to fillet seal around the perimeter of the underwing longeron fitting. Refer to SOPM 20-
50-19 as an accepted procedure.
(p) One or both Shim D may not have been previously installed. Install the necessary number of shim(s)
based on the findings during fitting removal. If shim(s) must be added at a location, use the appropriate
number of shim(s) as necessary.
The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure.
A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the
number of fasteners necessary for this figure.
More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.2621-0.264128BACB30NX8K( )XBOLT, PROTRUDING
HD
A
--28BACC30BH8COLLAR
Second oversize fastener.0.2777-0.279728BACB30NX8K( )YBOLT, PROTRUDING
HD
--28BACC30AC8COLLAR
First oversize fastener.0.3246-0.32661BACB30NX10K( )XBOLT, PROTRUDING
HD
B
--1BACC30BH10COLLAR
Second oversize fastener.0.3402-0.34221BACB30NX10K( )YBOLT, PROTRUDING
HD
--1BACC30AC10COLLAR
FIGURE 23: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U9 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 6 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
364 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 5

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3871-0.38914BACB30NX12K( )XBOLT, PROTRUDING
HD
C
--4BACC30BH12COLLAR
Second oversize fastener.0.4027-0.40474BACB30NX12K( )YBOLT, PROTRUDING
HD
--4BACC30AC12COLLAR
First oversize fastener.0.4496-0.45165BACB30NX14K( )XBOLTD
--5BACC30BH14COLLAR
Second oversize fastener.0.4652-0.46725BACB30NX14K( )YBOLT
--5BACC30AC14COLLAR
First oversize fastener.0.3871-0.38912BACB30YK12K( )XBOLTE
--2BACC30CP12CCOLLAR
Second oversize fastener.0.4027-0.40472BACB30YK12K( )YBOLT
--2BACC30CP12CYCOLLAR
First oversize fastener.0.6401-0.64113BACB30MR10A26XBOLTF
Under the bolt head.-3BACW10BP101CDWASHER, PLAIN
Under the nut.-3BACW10BP101DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
Second oversize fastener.0.6557-0.65673BACB30MR10A26YBOLT
Under the bolt head.-3BACW10BP102CDWASHER, PLAIN
Under the nut.-3BACW10BP102DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
First oversize fastener.0.6401-0.64111BACB30US10K( )XBOLTG
Self-aligning washer set.
Under the head.
-1BACW10CA101CVWASHER
Self-aligning washer set.
Under the head.
-1BACW10CA12CCWASHER, SELF-
ALIGN
Under the nut. One addi-
tional can be used as re-
quired, for grip length ad-
justment.
-1BACW10BP101DPWASHER, PLAIN
Torque nut to 2231 to
2369 inch lbs.
-1BACN10HR10CDNUT
FIGURE 23: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U9 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 7 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
365 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 6

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3276-0.32861BACB30US5K( )XBOLT, 12 PT HEADH
Under the bolt head.-1BACW10BP51CDWASHER, PLAIN
Under the nut.-1BACW10BP51DPWASHER, PLAIN
Torque nut to 243 to 258
inch lbs.
-1BACN10HR5CDNUT
FIGURE 23: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U9 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 8 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
366 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 7 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
This Figure applies only to: Group 2.
STA
FUSELAGE  783.04
FRONT SPAR  SKIN  UPPER DRAG
SPLICE ANGLE
UNDERWING  LOWER DRAG
LONGERON  SPLICE ANGLE
FITTING
UNDERWING LONGERON FITTING
3054670
FIGURE 24: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U10 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 1 OF 8)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  367 of 416

### Page 8 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
SEAL RETAINER
FRONT
INTERNAL 15  SPAR
B  BATHTUB FITTING  B
LONGERON FITTING  UNDERWING  16616)  SHIM 'C"  XE 9 SHIM "A"  39  912
STA
776.21
+
SHIM "B" (
RADIUS  FILLER 'B'  7 LOCATIONS  UNDERWING LONGERON  FITTING  FWD  3 LOCATIONS  1 1 26
A-A
RADIUS
FILLER 'A'
FWD  RADIUS
FILLER "B"
34 LOCATIONS
RADIUS  (10)
FILLER "C"
RADIUS  A F
FILLER "D"  SHIM "D"
(2 LOCATIONS)
(5 13)
5 10 RADIUS  FILLER "A"
251  RADIUS  FILLER "E"
RADIUS
FILLER "F" 2
RADIUS  FILLER "H"  RADIUS  3054671
FILLER "G"  B-B
FIGURE 24: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U10 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 2 OF 8)
Original Issue: October 10, 2024
767-57A0148 RB
Export Controlled ECCN: 9E991
See page 1 for details  368 of 416

### Page 9

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 one side of the airplane.
More DataQtyIdentificationNameTaskStep
-1111T4020U10FITTING, UNDER-
WING LONGERON,
RH
Locate1
-1-FITTING, INTERNAL
BATHTUB
Locate
(a) Shim A.1BACS40R018B022FSHIM, LAMINATEDLocate
(a) Shim B.1BACS40R021C037FSHIM, LAMINATEDLocate
(a) Shim C.1BACS40R014C022FSHIM, LAMINATEDLocate
(a)(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDLocate
(b)16-RADIUS FILLERLocate2
(c)(d) Drill and ream
to final hole size.
Refer to the fastener
code table.
3-HOLEDrill3
FIGURE 24: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U10 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 3 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
369 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 10

More DataQtyIdentificationNameTaskStep
(c)(d)(e) Drill and
ream to final hole
size. Refer to the
fastener code table.
41-HOLEDrill4
(f)16-RADIUS FILLERRemove / Keep5
Shim A.1BACS40R018B022FSHIM, LAMINATEDRemove / Keep
Shim B.1BACS40R021C037FSHIM, LAMINATEDRemove / Keep
Shim C.1BACS40R014C022FSHIM, LAMINATEDRemove / Keep
(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDRemove / Keep
-1-FITTING, INTERNAL
BATHTUB
Remove / Keep
-1111T4020U10FITTING, UNDER-
WING LONGERON,
RH
Remove / Keep
Clean and deburr all
structure.
--STRUCTUREClean/Deburr
(g)1111T4020U10FITTING, UNDER-
WING LONGERON,
RH
Install (New)6
(h)12-RADIUS FILLERInstall (Kept)7
(i) Refer to the fas-
tener code table.
34-FASTENERInstall (New)8
(j) Shim A.1BACS40R018B022FSHIM, LAMINATEDInstall (Kept)9
(j) Shim B.1BACS40R020C032FSHIM, LAMINATEDInstall (Kept)
(j) Shim C.1BACS40R014C022FSHIM, LAMINATEDInstall (Kept)
(j)1-FITTING, INTERNAL
BATHTUB
Install (Kept)
-1-TEMPORARY TEN-
SION BOLT
Install (New)
(k)4-RADIUS FILLERInstall (Kept)10
(l) Refer to the fas-
tener code table.
8-FASTENERInstall (New)11
FIGURE 24: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U10 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 4 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
370 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 11

More DataQtyIdentificationNameTaskStep
-1-TEMPORARY TEN-
SION BOLT
Remove12
Ream and deburr
the tension bolt hole
to final hole size.
Refer to the fastener
code table.
1-HOLEReam
(l) Refer to the fas-
tener code table.
1-FASTENERInstall (New)
(m)(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDInstall (Kept)13
(l) Refer to the fas-
tener code table.
3-FASTENERInstall (New)14
(n)5 OzBMS 5-45SEALANTApply15
(o)5 OzBMS 5-95SEALANTApply16
(a) Delaminate and taper shim as required to get a 0.005 inch maximum gap.
(b) If a radius filler was removed from locations "A" through "P". Locate in the recorded orientation from re-
moval.
(c) Keep a minimum of 1.7D edge margin at all fastener locations on the underwing longeron fitting.
(d) For existing fastener that is nominal, first, or second oversized, install the same type and size fastener if
open hole HFEC confirms crack-free condition.
(e) Oversizing to second oversize fastener requires high interference cold-working. Cold work the hole in
accordance with 767-400ER SRM 51-40-09.
(f) If a radius filler was removed from locations "A" through "P". Record the orientation of the radius filler at
each location for re-installation.
(g) Apply BMS 5-95 faying surface seal to the mating surface of the lower panel and the underwing longeron
fitting. Refer to SOPM 20-50-19 as an accepted procedure.
(h) If a radius filler was removed from locations "C" through "L", "O", and "P". Locate in the recorded orientation
from removal.
(i) Install the fasteners wet with BMS 5-45 to partially install the underwing longeron fitting. Refer to SOPM
20-50-19, and 767-400ER SRM 51-40-02 as accepted procedures.
Do not install fasteners common to the internal bathtub fitting or the three forward fasteners that are
common to the underwing longeron fitting.
(j) Apply BMS 5-45 faying surface seal. Refer to SOPM 20-50-19 as an accepted procedure.
(k) If a radius filler was removed from locations "A", "B", "M", and "N". Install in the recorded orientation.
(l) Install fasteners wet with BMS 5-45. Refer to SOPM 20-50-19 as an accepted procedure.
(m) Apply BMS 5-95 faying surface seal to each shim. Refer to SOPM 20-50-19 as an accepted procedure.
FIGURE 24: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U10 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 5 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
371 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 12

More DataQtyIdentificationNameTaskStep
(n) Apply cap seal to wing tank fasteners internally with BMS 5-45. Refer to 767 AMM 28-11-00 as an accepted
procedure.
(o) Apply BMS 5-95 to fillet seal around the perimeter of the underwing longeron fitting. Refer to SOPM 20-
50-19 as an accepted procedure.
(p) One or both Shim D may not have been previously installed. Install the necessary number of shim(s)
based on the findings during fitting removal. If shim(s) must be added at a location, use the appropriate
number of shim(s) as necessary.
The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure.
A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the
number of fasteners necessary for this figure.
More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.2621-0.264128BACB30NX8K( )XBOLT, PROTRUDING
HD
A
--28BACC30BH8COLLAR
Second oversize fastener.0.2777-0.279728BACB30NX8K( )YBOLT, PROTRUDING
HD
--28BACC30AC8COLLAR
First oversize fastener.0.3246-0.32661BACB30NX10K( )XBOLT, PROTRUDING
HD
B
--1BACC30BH10COLLAR
Second oversize fastener.0.3402-0.34221BACB30NX10K( )YBOLT, PROTRUDING
HD
--1BACC30AC10COLLAR
FIGURE 24: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U10 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 6 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
372 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 13

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3871-0.38914BACB30NX12K( )XBOLT, PROTRUDING
HD
C
--4BACC30BH12COLLAR
Second oversize fastener.0.4027-0.40474BACB30NX12K( )YBOLT, PROTRUDING
HD
--4BACC30AC12COLLAR
First oversize fastener.0.4496-0.45165BACB30NX14K( )XBOLTD
--5BACC30BH14COLLAR
Second oversize fastener.0.4652-0.46725BACB30NX14K( )YBOLT
--5BACC30AC14COLLAR
First oversize fastener.0.3871-0.38912BACB30YK12K( )XBOLTE
--2BACC30CP12CCOLLAR
Second oversize fastener.0.4027-0.40472BACB30YK12K( )YBOLT
--2BACC30CP12CYCOLLAR
First oversize fastener.0.6401-0.64113BACB30MR10A26XBOLTF
Under the bolt head.-3BACW10BP101CDWASHER, PLAIN
Under the nut.-3BACW10BP101DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
Second oversize fastener.0.6557-0.65673BACB30MR10A26YBOLT
Under the bolt head.-3BACW10BP102CDWASHER, PLAIN
Under the nut.-3BACW10BP102DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
First oversize fastener.0.6401-0.64111BACB30US10K( )XBOLTG
Self-aligning washer set.
Under the head.
-1BACW10CA101CVWASHER
Self-aligning washer set.
Under the head.
-1BACW10CA12CCWASHER, SELF-
ALIGN
Under the nut. One addi-
tional can be used as re-
quired, for grip length ad-
justment.
-1BACW10BP101DPWASHER, PLAIN
Torque nut to 2231 to
2369 inch lbs.
-1BACN10HR10CDNUT
FIGURE 24: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U10 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 7 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
373 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 14

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3276-0.32861BACB30US5K( )XBOLT, 12 PT HEADH
Under the bolt head.-1BACW10BP51CDWASHER, PLAIN
Under the nut.-1BACW10BP51DPWASHER, PLAIN
Torque nut to 243 to 258
inch lbs.
-1BACN10HR5CDNUT
FIGURE 24: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U10 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 8 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
374 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 15 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
This Figure applies only to: Group 2.
STA
783.04  FUSELAGE
UPPER DRAG  SKIN  FRONT SPAR
SPLICE ANGLE
LOWER DRAG  UNDERWING
SPLICE ANGLE  LONGERON
UNDERWING LONGERON
3054463
FIGURE 25: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U15 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 1 OF 8)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  375 of 416

### Page 16 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
SEAL RETAINER
FRONT
SPAR
SO BATHTUB FITTING  B
SHIM "A" (1X5)  UNDERWING
9 12 GIF  9) SHIM "C"  5) €  (16) LONGERON  FITTING
139
STA
776.21
+  + C
9) SHIM "B"
F A CA  7 LOCATIONS
RADIUS
3 LOCATIONS  -WD  UNDERWING LONGERON  FILLER 'B'
FITTING
A-A
RADIUS
FILLER'A'
WD
DO PALER R  34 LOCATIONS
RADIUS
FILLER "C"  (15)
251  RADIUS
SHIM "D"  FILLER "D"
(2 LOCATIONS)
15 13
FILLER "A" 2X5X10  RADIUS
RADIUS  hi to tha
FILLER "E" '
FILLER F" 2  RADIUS  FILLER "H"  RADIUS
FWD  FILLER "G" 315  RADIUS  3054464
B-B
FIGURE 25: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U15 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 2 OF 8)
Original Issue: October 10, 2024
767-57A0148 RB
Export Controlled ECCN: 9E991
See page 1 for details  376 of 416

### Page 17

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 one side of the airplane.
More DataQtyIdentificationNameTaskStep
-1111T4020U15FITTING, UNDER-
WING LONGERON, LH
Locate1
-1-FITTING, INTERNAL
BATHTUB
Locate
(a) Shim A.1BACS40R018B022FSHIM, LAMINATEDLocate
(a) Shim B.1BACS40R021C037FSHIM, LAMINATEDLocate
(a) Shim C.1BACS40R014C022FSHIM, LAMINATEDLocate
(a)(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDLocate
(b)16-RADIUS FILLERLocate2
(c)(d) Drill and ream
to final hole size.
Refer to the fastener
code table.
3-HOLEDrill3
FIGURE 25: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U15 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 3 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
377 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 18

More DataQtyIdentificationNameTaskStep
(c)(d)(e) Drill and
ream to final hole
size. Refer to the
fastener code table.
41-HOLEDrill4
(f)16-RADIUS FILLERRemove / Keep5
Shim A.1BACS40R018B022FSHIM, LAMINATEDRemove / Keep
Shim B.1BACS40R021C037FSHIM, LAMINATEDRemove / Keep
Shim C.1BACS40R014C022FSHIM, LAMINATEDRemove / Keep
(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDRemove / Keep
-1-FITTING, INTERNAL
BATHTUB
Remove / Keep
-1111T4020U15FITTING, UNDER-
WING LONGERON, LH
Remove / Keep
Clean and deburr all
structure.
--STRUCTUREClean/Deburr
(g)1111T4020U15FITTING, UNDER-
WING LONGERON, LH
Install (New)6
(h)12-RADIUS FILLERInstall (Kept)7
(i) Refer to the fas-
tener code table.
34-FASTENERInstall (New)8
(j) Shim A.1BACS40R018B022FSHIM, LAMINATEDInstall (Kept)9
(j) Shim B.1BACS40R020C032FSHIM, LAMINATEDInstall (Kept)
(j) Shim C.1BACS40R014C022FSHIM, LAMINATEDInstall (Kept)
(j)1-FITTING, INTERNAL
BATHTUB
Install (Kept)
-1-TEMPORARY TEN-
SION BOLT
Install (New)
(k)4-RADIUS FILLERInstall (Kept)10
(l) Refer to the fas-
tener code table.
8-FASTENERInstall (New)11
FIGURE 25: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U15 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 4 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
378 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 19

More DataQtyIdentificationNameTaskStep
-1-TEMPORARY TEN-
SION BOLT
Remove12
Ream and deburr
the tension bolt hole
to final hole size.
Refer to the fastener
code table.
1-HOLEReam
(l) Refer to the fas-
tener code table.
1-FASTENERInstall (New)
(m)(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDInstall (Kept)13
(l) Refer to the fas-
tener code table.
3-FASTENERInstall (New)14
(n)5 OzBMS 5-45SEALANTApply15
(o)5 OzBMS 5-95SEALANTApply16
(a) Delaminate and taper shim as required to get a 0.005 inch maximum gap.
(b) If a radius filler was removed from locations "A" through "P". Locate in the recorded orientation from re-
moval.
(c) Keep a minimum of 1.7D edge margin at all fastener locations on the underwing longeron fitting.
(d) For existing fastener that is nominal, first, or second oversized, install the same type and size fastener if
open hole HFEC confirms crack-free condition.
(e) Oversizing to second oversize fastener requires high interference cold-working. Cold work the hole in
accordance with 767-400ER SRM 51-40-09.
(f) If a radius filler was removed from locations "A" through "P". Record the orientation of the radius filler at
each location for re-installation.
(g) Apply BMS 5-95 faying surface seal to the mating surface of the lower panel and the underwing longeron
fitting. Refer to SOPM 20-50-19 as an accepted procedure.
(h) If a radius filler was removed from locations "C" through "L", "O", and "P". Locate in the recorded orientation
from removal.
(i) Install the fasteners wet with BMS 5-45 to partially install the underwing longeron fitting. Refer to SOPM
20-50-19, and 767-400ER SRM 51-40-02 as accepted procedures.
Do not install fasteners common to the internal bathtub fitting or the three forward fasteners that are
common to the underwing longeron fitting.
(j) Apply BMS 5-45 faying surface seal. Refer to SOPM 20-50-19 as an accepted procedure.
(k) If a radius filler was removed from locations "A", "B", "M", and "N". Install in the recorded orientation.
(l) Install fasteners wet with BMS 5-45. Refer to SOPM 20-50-19 as an accepted procedure.
(m) Apply BMS 5-95 faying surface seal to each shim. Refer to SOPM 20-50-19 as an accepted procedure.
FIGURE 25: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U15 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 5 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
379 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 20

More DataQtyIdentificationNameTaskStep
(n) Apply cap seal to wing tank fasteners internally with BMS 5-45. Refer to 767 AMM 28-11-00 as an accepted
procedure.
(o) Apply BMS 5-95 to fillet seal around the perimeter of the underwing longeron fitting. Refer to SOPM 20-
50-19 as an accepted procedure.
(p) One or both Shim D may not have been previously installed. Install the necessary number of shim(s)
based on the findings during fitting removal. If shim(s) must be added at a location, use the appropriate
number of shim(s) as necessary.
The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure.
A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the
number of fasteners necessary for this figure.
More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.2621-0.264128BACB30NX8K( )XBOLT, PROTRUDING
HD
A
--28BACC30BH8COLLAR
Second oversize fastener.0.2777-0.279728BACB30NX8K( )YBOLT, PROTRUDING
HD
--28BACC30AC8COLLAR
First oversize fastener.0.3246-0.32661BACB30NX10K( )XBOLT, PROTRUDING
HD
B
--1BACC30BH10COLLAR
Second oversize fastener.0.3402-0.34221BACB30NX10K( )YBOLT, PROTRUDING
HD
--1BACC30AC10COLLAR
FIGURE 25: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U15 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 6 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
380 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 21

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3871-0.38914BACB30NX12K( )XBOLT, PROTRUDING
HD
C
--4BACC30BH12COLLAR
Second oversize fastener.0.4027-0.40474BACB30NX12K( )YBOLT, PROTRUDING
HD
--4BACC30AC12COLLAR
First oversize fastener.0.4496-0.45165BACB30NX14K( )XBOLTD
--5BACC30BH14COLLAR
Second oversize fastener.0.4652-0.46725BACB30NX14K( )YBOLT
--5BACC30AC14COLLAR
First oversize fastener.0.3871-0.38912BACB30YK12K( )XBOLTE
--2BACC30CP12CCOLLAR
Second oversize fastener.0.4027-0.40472BACB30YK12K( )YBOLT
--2BACC30CP12CYCOLLAR
First oversize fastener.0.6401-0.64113BACB30MR10A26XBOLTF
Under the bolt head.-3BACW10BP101CDWASHER, PLAIN
Under the nut.-3BACW10BP101DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
Second oversize fastener.0.6557-0.65673BACB30MR10A26YBOLT
Under the bolt head.-3BACW10BP102CDWASHER, PLAIN
Under the nut.-3BACW10BP102DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
First oversize fastener.0.6401-0.64111BACB30US10K( )XBOLTG
Self-aligning washer set.
Under the head.
-1BACW10CA101CVWASHER
Self-aligning washer set.
Under the head.
-1BACW10CA12CCWASHER, SELF-
ALIGN
Under the nut. One addi-
tional can be used as re-
quired, for grip length ad-
justment.
-1BACW10BP101DPWASHER, PLAIN
Torque nut to 2231 to
2369 inch lbs.
-1BACN10HR10CDNUT
FIGURE 25: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U15 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 7 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
381 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 22

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3276-0.32861BACB30US5K( )XBOLT, 12 PT HEADH
Under the bolt head.-1BACW10BP51CDWASHER, PLAIN
Under the nut.-1BACW10BP51DPWASHER, PLAIN
Torque nut to 243 to 258
inch lbs.
-1BACN10HR5CDNUT
FIGURE 25: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U15 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 8 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
382 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 23 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
This Figure applies only to: Group 2.
STA
FUSELAGE  783.04
FRONT SPAR  SKIN  UPPER DRAG
SPLICE ANGLE
UNDERWING  LOWER DRAG
LONGERON  SPLICE ANGLE
FITTING
UNDERWING LONGERON FITTING
3054674
FIGURE 26: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U16 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 1 OF 8)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  383 of 416

### Page 24 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
SEAL RETAINER
FRONT
SPAR
INTERNAL
BATHTUB FITTING  9) SHIM "A"
LONGERON FITTING  UNDERWING 1E€  SHIM "C" O  9 12
STA
776.21
SHIM "B"
RADIUS  7 LOCATIONS  ĐCA 126
FILLER 'B'  UNDERWING LONGERON  FITTING  FWD  3 LOCATIONS
A-A
RADIUS
FILLER'A'
FWD  RADIUS  PrEs  HE 2% 2%
FILLER "B"  ET20 EXT
34 LOCATIONS  15)  RADIUS  FILLER "C"  ₴ 5 10  27
RADIUS
FILLER "D"  SHIM "D"
(2 5)  (2 LOCATIONS)
5) 13
S10 RADIUS  FILLER A
SO FILLER  FILLER "E"
FILLER "H"  RADIUS  FILLER "G"  RADIUS  B-B  FILLER "F"  RADIUS  FWD  3054675
FIGURE 26: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U16 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 2 OF 8)
Original Issue: October 10, 2024
767-57A0148 RB
Export Controlled ECCN: 9E991
See page 1 for details  384 of 416

### Page 25 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
RADIUS
RADIUS  FILLER "K"  RADIUS
FILLER "L"  209  RADIUS  FILLER "I"
FILLER " J"
251
(2)5
RADIUS  RADIUS
FILLER "P"  FILLER "O"  FWD  251
RADIUS  251
FILLER "N"  RADIUS
C-C  FILLER "M"
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 one side of the airplane.
Step  Task  Name  Identification  Qty  More Data
1  Locate  FITTING, UNDER-  111T4020U16  1
WING LONGERON,
RH
Locate  FITTING, INTERNAL  1
BATHTUB
Locate  SHIM, LAMINATED  BACS40R018B022F  1  (a) Shim A.
Locate  SHIM, LAMINATED  BACS40R021C037F  1  (a) Shim B.
Locate  SHIM, LAMINATED  BACS40R014C022F  1  (a) Shim C.
Locate  SHIM, LAMINATED  BACS40R025C063F  2  (a) (p) Shim D.
2  Locate  RADIUS FILLER  16  (b)
Drill  HOLE  3  (c)(d) Drill and ream
to final hole size.
Refer to the fastener
code table.
FIGURE 26: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U16 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 3 OF 8)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  385 of 416

### Page 26

More DataQtyIdentificationNameTaskStep
(c)(d)(e) Drill and
ream to final hole
size. Refer to the
fastener code table.
41-HOLEDrill4
(f)16-RADIUS FILLERRemove / Keep5
Shim A.1BACS40R018B022FSHIM, LAMINATEDRemove / Keep
Shim B.1BACS40R021C037FSHIM, LAMINATEDRemove / Keep
Shim C.1BACS40R014C022FSHIM, LAMINATEDRemove / Keep
(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDRemove / Keep
-1-FITTING, INTERNAL
BATHTUB
Remove / Keep
-1111T4020U16FITTING, UNDER-
WING LONGERON,
RH
Remove / Keep
Clean and deburr all
structure.
--STRUCTUREClean/Deburr
(g)1111T4020U16FITTING, UNDER-
WING LONGERON,
RH
Install (New)6
(h)12-RADIUS FILLERInstall (Kept)7
(i) Refer to the fas-
tener code table.
34-FASTENERInstall (New)8
(j) Shim A.1BACS40R018B022FSHIM, LAMINATEDInstall (Kept)9
(j) Shim B.1BACS40R020C032FSHIM, LAMINATEDInstall (Kept)
(j) Shim C.1BACS40R014C022FSHIM, LAMINATEDInstall (Kept)
(j)1-FITTING, INTERNAL
BATHTUB
Install (Kept)
-1-TEMPORARY TEN-
SION BOLT
Install (New)
(k)4-RADIUS FILLERInstall (Kept)10
(l) Refer to the fas-
tener code table.
8-FASTENERInstall (New)11
FIGURE 26: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U16 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 4 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
386 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 27

More DataQtyIdentificationNameTaskStep
-1-TEMPORARY TEN-
SION BOLT
Remove12
Ream and deburr
the tension bolt hole
to final hole size.
Refer to the fastener
code table.
1-HOLEReam
(l) Refer to the fas-
tener code table.
1-FASTENERInstall (New)
(m)(p) Shim D.2BACS40R025C063FSHIM, LAMINATEDInstall (Kept)13
(l) Refer to the fas-
tener code table.
3-FASTENERInstall (New)14
(n)5 OzBMS 5-45SEALANTApply15
(o)5 OzBMS 5-95SEALANTApply16
(a) Delaminate and taper shim as required to get a 0.005 inch maximum gap.
(b) If a radius filler was removed from locations "A" through "P". Locate in the recorded orientation from re-
moval.
(c) Keep a minimum of 1.7D edge margin at all fastener locations on the underwing longeron fitting.
(d) For existing fastener that is nominal, first, or second oversized, install the same type and size fastener if
open hole HFEC confirms crack-free condition.
(e) Oversizing to second oversize fastener requires high interference cold-working. Cold work the hole in
accordance with 767-400ER SRM 51-40-09.
(f) If a radius filler was removed from locations "A" through "P". Record the orientation of the radius filler at
each location for re-installation.
(g) Apply BMS 5-95 faying surface seal to the mating surface of the lower panel and the underwing longeron
fitting. Refer to SOPM 20-50-19 as an accepted procedure.
(h) If a radius filler was removed from locations "C" through "L", "O", and "P". Locate in the recorded orientation
from removal.
(i) Install the fasteners wet with BMS 5-45 to partially install the underwing longeron fitting. Refer to SOPM
20-50-19, and 767-400ER SRM 51-40-02 as accepted procedures.
Do not install fasteners common to the internal bathtub fitting or the three forward fasteners that are
common to the underwing longeron fitting.
(j) Apply BMS 5-45 faying surface seal. Refer to SOPM 20-50-19 as an accepted procedure.
(k) If a radius filler was removed from locations "A", "B", "M", and "N". Install in the recorded orientation.
(l) Install fasteners wet with BMS 5-45. Refer to SOPM 20-50-19 as an accepted procedure.
(m) Apply BMS 5-95 faying surface seal to each shim. Refer to SOPM 20-50-19 as an accepted procedure.
FIGURE 26: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U16 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 5 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
387 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 28

More DataQtyIdentificationNameTaskStep
(n) Apply cap seal to wing tank fasteners internally with BMS 5-45. Refer to 767 AMM 28-11-00 as an accepted
procedure.
(o) Apply BMS 5-95 to fillet seal around the perimeter of the underwing longeron fitting. Refer to SOPM 20-
50-19 as an accepted procedure.
(p) One or both Shim D may not have been previously installed. Install the necessary number of shim(s)
based on the findings during fitting removal. If shim(s) must be added at a location, use the appropriate
number of shim(s) as necessary.
The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure.
A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the
number of fasteners necessary for this figure.
More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.2621-0.264128BACB30NX8K( )XBOLT, PROTRUDING
HD
A
--28BACC30BH8COLLAR
Second oversize fastener.0.2777-0.279728BACB30NX8K( )YBOLT, PROTRUDING
HD
--28BACC30AC8COLLAR
First oversize fastener.0.3246-0.32661BACB30NX10K( )XBOLT, PROTRUDING
HD
B
--1BACC30BH10COLLAR
Second oversize fastener.0.3402-0.34221BACB30NX10K( )YBOLT, PROTRUDING
HD
--1BACC30AC10COLLAR
FIGURE 26: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U16 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 6 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
388 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 29

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3871-0.38914BACB30NX12K( )XBOLT, PROTRUDING
HD
C
--4BACC30BH12COLLAR
Second oversize fastener.0.4027-0.40474BACB30NX12K( )YBOLT, PROTRUDING
HD
--4BACC30AC12COLLAR
First oversize fastener.0.4496-0.45165BACB30NX14K( )XBOLTD
--5BACC30BH14COLLAR
Second oversize fastener.0.4652-0.46725BACB30NX14K( )YBOLT
--5BACC30AC14COLLAR
First oversize fastener.0.3871-0.38912BACB30YK12K( )XBOLTE
--2BACC30CP12CCOLLAR
Second oversize fastener.0.4027-0.40472BACB30YK12K( )YBOLT
--2BACC30CP12CYCOLLAR
First oversize fastener.0.6401-0.64113BACB30MR10A26XBOLTF
Under the bolt head.-3BACW10BP101CDWASHER, PLAIN
Under the nut.-3BACW10BP101DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
Second oversize fastener.0.6557-0.65673BACB30MR10A26YBOLT
Under the bolt head.-3BACW10BP102CDWASHER, PLAIN
Under the nut.-3BACW10BP102DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
First oversize fastener.0.6401-0.64111BACB30US10K( )XBOLTG
Self-aligning washer set.
Under the head.
-1BACW10CA101CVWASHER
Self-aligning washer set.
Under the head.
-1BACW10CA12CCWASHER, SELF-
ALIGN
Under the nut. One addi-
tional can be used as re-
quired, for grip length ad-
justment.
-1BACW10BP101DPWASHER, PLAIN
Torque nut to 2231 to
2369 inch lbs.
-1BACN10HR10CDNUT
FIGURE 26: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U16 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 7 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
389 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 30

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3276-0.32861BACB30US5K( )XBOLT, 12 PT HEADH
Under the bolt head.-1BACW10BP51CDWASHER, PLAIN
Under the nut.-1BACW10BP51DPWASHER, PLAIN
Torque nut to 243 to 258
inch lbs.
-1BACN10HR5CDNUT
FIGURE 26: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U16 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 8 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
390 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 31 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
This Figure applies only to: Group 5.
STA
783.04  FUSELAGE
UPPER DRAG  SKIN  FRONT SPAR
SPLICE ANGLE
LOWER DRAG  UNDERWING
SPLICE ANGLE  LONGERON
FITTING
UNDERWING LONGERON FITTING
3054471
FIGURE 27: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U13 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 1 OF 8)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  391 of 416

### Page 32 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
SEAL RETAINER
FRONT
SHIM "A"  15  B  SPAR  (5) BATHTUB FITTING  INTERNAL  B
912 9F  140^  ) SHIM "C"  115) 6) 16) UNDERWING  LONGERON FITTING
STA
776.21
9 ) SHIM "B"
F1 26 3 14  8 LOCATIONS
3 LOCATIONS  -WD  UNDERWING LONGERON  FITTING  RADIUS
А-А  FILLER 'B'
RADIUS
FILLER'A
FWD
2 5 10 RADES  -ILLER "B'  RADIUS  FILLER "C"  34 LOCATIONS  8 15)
RADIUS
SHIM "D"  FILLER "D'
(2 LOCATIONS)
151
FILLER "A" 2€1  RADIUS
FILLER "E" 25  RADIUS  A F  АҐ{г
RADIUS  FILLERS AG
FILLER "F"  B-B  FILLER "G"  RADIUS 25  3054472
FIGURE 27: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U13 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 2 OF 8)
Original Issue: October 10, 2024
767-57A0148 RB
Export Controlled ECCN: 9E991
See page 1 for details  392 of 416

### Page 33

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 one side of the airplane.
More DataQtyIdentificationNameTaskStep
-1111T4020U13FITTING, UNDER-
WING LONGERON, LH
Locate1
-1-FITTING, INTERNAL
BATHTUB
Locate
(a) Shim A.1BACS40R016B018FSHIM, LAMINATEDLocate
(a) Shim B.1BACS40R020C032FSHIM, LAMINATEDLocate
(a) Shim C.1BACS40R014C022FSHIM, LAMINATEDLocate
(a)(q) Shim D.2BACS40R025C063FSHIM, LAMINATEDLocate
(b)16-RADIUS FILLERLocate2
(c)(d) Drill and ream
to final hole size.
Refer to the fastener
code table.
3-HOLEDrill3
FIGURE 27: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U13 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 3 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
393 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 34

More DataQtyIdentificationNameTaskStep
(c)(d)(e) Drill and
ream to final hole
size. Refer to the
fastener code table.
42-HOLEDrill4
(f)16-RADIUS FILLERRemove / Keep5
Shim A.1BACS40R016B018FSHIM, LAMINATEDRemove / Keep
Shim B.1BACS40R020C032FSHIM, LAMINATEDRemove / Keep
Shim C.1BACS40R014C022FSHIM, LAMINATEDRemove / Keep
(q) Shim D.2BACS40R025C063FSHIM, LAMINATEDRemove / Keep
-1-FITTING, INTERNAL
BATHTUB
Remove / Keep
-1111T4020U13FITTING, UNDER-
WING LONGERON, LH
Remove / Keep
Clean and deburr all
structure.
--STRUCTUREClean/Deburr
(g)1111T4020U13FITTING, UNDER-
WING LONGERON, LH
Install (New)6
(h)12-RADIUS FILLERInstall (Kept)7
(i) Refer to the fas-
tener code table.
34-FASTENERInstall (New)8
(j) Shim A.1BACS40R016B018FSHIM, LAMINATEDInstall (Kept)9
(j) Shim B.1BACS40R020C032FSHIM, LAMINATEDInstall (Kept)
(j) Shim C.1BACS40R014C022FSHIM, LAMINATEDInstall (Kept)
(j)1-FITTING, INTERNAL
BATHTUB
Install (Kept)
(k) Radius filler R.
Refer to the fastener
code table for stack-
up.
1140T0120-48SHIMInstall (New)
-1-TEMPORARY TEN-
SION BOLT
Install (New)
(l)4-RADIUS FILLERInstall (Kept)10
(m) Refer to the fas-
tener code table.
8-FASTENERInstall (New)11
FIGURE 27: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U13 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 4 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
394 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 35

More DataQtyIdentificationNameTaskStep
-1-TEMPORARY TEN-
SION BOLT
Remove12
Ream and deburr
the tension bolt hole
to final hole size.
Refer to the fastener
code table.
1-HOLEReam
(m) Refer to the fas-
tener code table.
1-FASTENERInstall (New)
(n)(q) Shim D.2BACS40R025C063FSHIM, LAMINATEDInstall (Kept)13
(m) Refer to the fas-
tener code table.
3-FASTENERInstall (New)14
(o)5 OzBMS 5-45SEALANTApply15
(p)5 OzBMS 5-95SEALANTApply16
(a) Delaminate and taper shim as required to get a 0.005 inch maximum gap.
(b) If a radius filler was removed from locations "A" through "P". Locate in the recorded orientation from re-
moval.
(c) Keep a minimum of 1.7D edge margin at all fastener locations on the underwing longeron fitting.
(d) For existing fastener that is nominal, first, or second oversized, install the same type and size fastener if
open hole HFEC confirms crack-free condition.
(e) Oversizing to second oversize fastener requires high interference cold-working. Cold work the hole in
accordance with 767-200 SRM 51-40-09 or 767-200SF SRM 51-40-09 or 767-300 SRM 51-40-09 or 767-
300BCF SRM 51-40-09 or 767-300F SRM 51-40-09.
(f) If a radius filler was removed from locations "A" through "P". Record the orientation of the radius filler at
each location for re-installation.
(g) Apply BMS 5-95 faying surface seal to the mating surface of the lower panel and the underwing longeron
fitting. Refer to SOPM 20-50-19 as an accepted procedure.
(h) If a radius filler was removed from locations "C" through "L", "O", and "P". Locate in the recorded orientation
from removal.
(i) Install the fasteners wet with BMS 5-45 to partially install the underwing longeron fitting. Refer to SOPM
20-50-19, and 767-200 SRM 51-40-02 or 767-200SF SRM 51-40-02 or 767-300 SRM 51-40-02 or 767-
300BCF SRM 51-40-02 or 767-300F SRM 51-40-02 as accepted procedures.
Do not install fasteners common to the internal bathtub fitting or the three forward fasteners that are
common to the underwing longeron fitting.
(j) Apply BMS 5-45 faying surface seal. Refer to SOPM 20-50-19 as an accepted procedure.
(k) As an option use kept shim for internal bathtub fitting, if installed.
(l) If a radius filler was removed from locations "A", "B", "M", and "N". Install in the recorded orientation.
FIGURE 27: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U13 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 5 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
395 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 36

More DataQtyIdentificationNameTaskStep
(m) Install fasteners wet with BMS 5-45. Refer to SOPM 20-50-19 as an accepted procedure.
(n) Apply BMS 5-95 faying surface seal to each shim. Refer to SOPM 20-50-19 as an accepted procedure.
(o) Apply cap seal to wing tank fasteners internally with BMS 5-45. Refer to 767 AMM 28-11-00 as an accepted
procedure.
(p) Apply BMS 5-95 to fillet seal around the perimeter of the underwing longeron fitting. Refer to SOPM 20-
50-19 as an accepted procedure.
(q) One or both Shim D may not have been previously installed. Install the necessary number of shim(s)
based on the findings during fitting removal. If shim(s) must be added at a location, use the appropriate
number of shim(s) as necessary.
The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure.
A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the
number of fasteners necessary for this figure.
More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.2621-0.264128BACB30NX8K( )XBOLT, PROTRUDING
HD
A
--28BACC30BH8COLLAR
Second oversize fastener.0.2777-0.279728BACB30NX8K( )YBOLT, PROTRUDING
HD
--28BACC30AC8COLLAR
First oversize fastener.0.3246-0.326611BACB30NX10K( )XBOLT, PROTRUDING
HD
B
--11BACC30BH10COLLAR
Second oversize fastener.0.3402-0.342211BACB30NX10K( )YBOLT, PROTRUDING
HD
--11BACC30AC10COLLAR
FIGURE 27: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U13 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 6 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
396 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 37

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3871-0.38911BACB30NX12K( )XBOLT, PROTRUDING
HD
C
--1BACC30BH12COLLAR
Second oversize fastener.0.4027-0.40471BACB30NX12K( )YBOLT, PROTRUDING
HD
--1BACC30AC12COLLAR
First oversize fastener.0.4496-0.45161BACB30NX14K( )XBOLTD
--1BACC30BH14COLLAR
Second oversize fastener.0.4652-0.46721BACB30NX14K( )YBOLT
--1BACC30AC14COLLAR
First oversize fastener (if
5/16 inch hi-lok was in-
stalled.)
0.3246-0.32661BACB30NX10K( )XBOLT, PROTRUDING
HD
E
--1BACC30BH10COLLAR
Second oversize fastener.0.3402-0.34221BACB30NX10K( )YBOLT, PROTRUDING
HD
--1BACC30AC10COLLAR
First oversize fastener (if
5/16 inch bolt and nut was
installed.)
0.3276-0.32861BACB30US5K( )XBOLT, 12 PT HEAD
Under the bolt head.-1BACW10BP51CDWASHER, PLAIN
Under the nut.-1BACW10BP51DPWASHER, PLAIN
Torque nut to 243 to 258
inch lbs.
-1BACN10HR5CDNUT
First oversize fastener.0.6401-0.64113BACB30MR10A26XBOLTF
Under the bolt head.-3BACW10BP101CDWASHER, PLAIN
Under the nut.-3BACW10BP101DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
Second oversize fastener.0.6557-0.65673BACB30MR10A26YBOLT
Under the bolt head.-3BACW10BP102CDWASHER, PLAIN
Under the nut.-3BACW10BP102DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
FIGURE 27: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U13 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 7 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
397 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 38

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.5776-0.57861BACB30US9K( )XBOLT, 12 PT HEADG
Under the bolt head.-1BACW10BP91ACWASHER, PLAIN AND
COUNTERSUNK
Self-aligning washer set.
Under the nut.
-1BACW10CA91CVWASHER
Self-aligning washer set.
Under the nut.
-1BACW10CA10CCWASHER
Between nut and self-
aligning washer, for grip
length adjustment.
-1BACW10BP91DPWASHER, PLAIN
Torque nut to 1746 to
1854 inch lbs.
-1BACN10HR9CDNUT
FIGURE 27: LEFT SIDE UNDERWING LONGERON FITTING P/N 111T4020U13 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 8 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
398 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 39 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
This Figure applies only to: Group 5.
STA
FUSELAGE  783.04
FRONT SPAR  SKIN  UPPER DRAG
SPLICE ANGLE
UNDERWING  LOWER DRAG
LONGERON  SPLICE ANGLE
FITTING
UNDERWING LONGERON FITTING
3054679
FIGURE 28: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U14 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 1 OF 8)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  399 of 416

### Page 40 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
SEAL RETAINER
FRONT
B  BATHTUB FITTING  INTERNAL  159  SPAR  B SHIM "A"  5 9
LONGERON FITTING  UNDERWING 15616
STA
776.21
+  +
SHIM "B" (
8 LOCATIONS  ® 1 26
(4 11)  UNDERWING LONGERON  FWD  3 LOCATIONS
RADIUS  FITTING
FILLER 'B'  A-A
RADIUS
FILLER'A'
+ +-
FWD  RADIUS
FILLER "B"
34 LOCATIONS
RADIUS
FILLER "C"
RADIUS
FILLER "D"  SHIM "D"
(2 LOCATIONS)
5 13
5X10 RADIUS  FILLER "A"
19
RADIUS
FILLER "E"
RADIUS  FILLER "H"  RADIUS  RADIUS  3054680
FILLER "G"  B-B  FILLER "F"
FIGURE 28: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U14 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 2 OF 8)
Original Issue: October 10, 2024
767-57A0148 RB
Export Controlled ECCN: 9E991
See page 1 for details  400 of 416

### Page 41 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
RADIUS
RADIUS  FILLER "K"  RADIUS
FILLER "L"  RADIUS  FILLER "I"
FILLER "J'  (2) 5
(2) 5)
₴ 5
RADIUS  RADIUS
FILLER "P"  FILLER "O"  FWD  2510
RADIUS  (25  10
FILLER "N"
RADIUS
C-C  FILLER "M"
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 one side of the airplane.
Step  Task  Name  Identification  Qty  More Data
Locate  FITTING, UNDER-  111T4020U14  1
WING LONGERON,
RH
Locate  FITTING, INTERNAL  1
BATHTUB
Locate  SHIM, LAMINATED  BACS40R016B018F  1  (a) Shim A.
Locate  SHIM, LAMINATED  BACS40R020C032F  1  (a) Shim B.
Locate  SHIM, LAMINATED  BACS40R014C022F  1  (a) Shim C.
Locate  SHIM, LAMINATED  BACS40R025C063F  2  (a) (q) Shim D.
2  Locate  RADIUS FILLER  16  (b)
Drill  HOLE  3  (c)(d) Drill and ream
to final hole size.
Refer to the fastener
code table.
FIGURE 28: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020014 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 3 OF 8)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  401 of 416

### Page 42

More DataQtyIdentificationNameTaskStep
(c)(d)(e) Drill and
ream to final hole
size. Refer to the
fastener code table.
42-HOLEDrill4
(f)16-RADIUS FILLERRemove / Keep5
Shim A.1BACS40R016B018FSHIM, LAMINATEDRemove / Keep
Shim B.1BACS40R020C032FSHIM, LAMINATEDRemove / Keep
Shim C.1BACS40R014C022FSHIM, LAMINATEDRemove / Keep
(q) Shim D.2BACS40R025C063FSHIM, LAMINATEDRemove / Keep
-1-FITTING, INTERNAL
BATHTUB
Remove / Keep
-1111T4020U14FITTING, UNDER-
WING LONGERON,
RH
Remove / Keep
Clean and deburr all
structure.
--STRUCTUREClean/Deburr
(g)1111T4020U14FITTING, UNDER-
WING LONGERON,
RH
Install (New)6
(h)12-RADIUS FILLERInstall (Kept)7
(i) Refer to the fas-
tener code table.
34-FASTENERInstall (New)8
(j) Shim A.1BACS40R016B018FSHIM, LAMINATEDInstall (Kept)9
(j) Shim B.1BACS40R020C032FSHIM, LAMINATEDInstall (Kept)
(j) Shim C.1BACS40R014C022FSHIM, LAMINATEDInstall (Kept)
(j)1-FITTING, INTERNAL
BATHTUB
Install (Kept)
(k) Radius filler R.
Refer to the fastener
code table for stack-
up.
1140T0120-48SHIMInstall (New)
-1-TEMPORARY TEN-
SION BOLT
Install (New)
(l)4-RADIUS FILLERInstall (Kept)10
(m) Refer to the fas-
tener code table.
8-FASTENERInstall (New)11
FIGURE 28: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U14 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 4 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
402 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 43

More DataQtyIdentificationNameTaskStep
-1-TEMPORARY TEN-
SION BOLT
Remove12
Ream and deburr
the tension bolt hole
to final hole size.
Refer to the fastener
code table.
1-HOLEReam
(m) Refer to the fas-
tener code table.
1-FASTENERInstall (New)
(n)(q) Shim D.2BACS40R025C063FSHIM, LAMINATEDInstall (Kept)13
(m) Refer to the fas-
tener code table.
3-FASTENERInstall (New)14
(o)5 OzBMS 5-45SEALANTApply15
(p)5 OzBMS 5-95SEALANTApply16
(a) Delaminate and taper shim as required to get a 0.005 inch maximum gap.
(b) If a radius filler was removed from locations "A" through "P". Locate in the recorded orientation from re-
moval.
(c) Keep a minimum of 1.7D edge margin at all fastener locations on the underwing longeron fitting.
(d) For existing fastener that is nominal, first, or second oversized, install the same type and size fastener if
open hole HFEC confirms crack-free condition.
(e) Oversizing to second oversize fastener requires high interference cold-working. Cold work the hole in
accordance with 767-200 SRM 51-40-09 or 767-200SF SRM 51-40-09 or 767-300 SRM 51-40-09 or 767-
300BCF SRM 51-40-09 or 767-300F SRM 51-40-09.
(f) If a radius filler was removed from locations "A" through "P". Record the orientation of the radius filler at
each location for re-installation.
(g) Apply BMS 5-95 faying surface seal to the mating surface of the lower panel and the underwing longeron
fitting. Refer to SOPM 20-50-19 as an accepted procedure.
(h) If a radius filler was removed from locations "C" through "L", "O", and "P". Locate in the recorded orientation
from removal.
(i) Install the fasteners wet with BMS 5-45 to partially install the underwing longeron fitting. Refer to SOPM
20-50-19, and 767-200 SRM 51-40-02 or 767-200SF SRM 51-40-02 or 767-300 SRM 51-40-02 or 767-
300BCF SRM 51-40-02 or 767-300F SRM 51-40-02 as accepted procedures.
Do not install fasteners common to the internal bathtub fitting or the three forward fasteners that are
common to the underwing longeron fitting.
(j) Apply BMS 5-45 faying surface seal. Refer to SOPM 20-50-19 as an accepted procedure.
(k) As an option use kept shim for internal bathtub fitting, if installed.
(l) If a radius filler was removed from locations "A", "B", "M", and "N". Install in the recorded orientation.
FIGURE 28: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U14 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 5 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
403 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 44

More DataQtyIdentificationNameTaskStep
(m) Install fasteners wet with BMS 5-45. Refer to SOPM 20-50-19 as an accepted procedure.
(n) Apply BMS 5-95 faying surface seal to each shim. Refer to SOPM 20-50-19 as an accepted procedure.
(o) Apply cap seal to wing tank fasteners internally with BMS 5-45. Refer to 767 AMM 28-11-00 as an accepted
procedure.
(p) Apply BMS 5-95 to fillet seal around the perimeter of the underwing longeron fitting. Refer to SOPM 20-
50-19 as an accepted procedure.
(q) One or both Shim D may not have been previously installed. Install the necessary number of shim(s)
based on the findings during fitting removal. If shim(s) must be added at a location, use the appropriate
number of shim(s) as necessary.
The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure.
A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the
number of fasteners necessary for this figure.
More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.2621-0.264128BACB30NX8K( )XBOLT, PROTRUDING
HD
A
--28BACC30BH8COLLAR
Second oversize fastener.0.2777-0.279728BACB30NX8K( )YBOLT, PROTRUDING
HD
--28BACC30AC8COLLAR
First oversize fastener.0.3246-0.326611BACB30NX10K( )XBOLT, PROTRUDING
HD
B
--11BACC30BH10COLLAR
Second oversize fastener.0.3402-0.342211BACB30NX10K( )YBOLT, PROTRUDING
HD
--11BACC30AC10COLLAR
FIGURE 28: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U14 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 6 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
404 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 45

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.3871-0.38911BACB30NX12K( )XBOLT, PROTRUDING
HD
C
--1BACC30BH12COLLAR
Second oversize fastener.0.4027-0.40471BACB30NX12K( )YBOLT, PROTRUDING
HD
--1BACC30AC12COLLAR
First oversize fastener.0.4496-0.45161BACB30NX14K( )XBOLTD
--1BACC30BH14COLLAR
Second oversize fastener.0.4652-0.46721BACB30NX14K( )YBOLT
--1BACC30AC14COLLAR
First oversize fastener (if
5/16 inch hi-lok was in-
stalled.)
0.3246-0.32661BACB30NX10K( )XBOLT, PROTRUDING
HD
E
--1BACC30BH10COLLAR
Second oversize fastener.0.3402-0.34221BACB30NX10K( )YBOLT, PROTRUDING
HD
--1BACC30AC10COLLAR
First oversize fastener (if
5/16 inch bolt and nut was
installed.)
0.3276-0.32861BACB30US5K( )XBOLT, 12 PT HEAD
Under the bolt head.-1BACW10BP51CDWASHER, PLAIN
Under the nut.-1BACW10BP51DPWASHER, PLAIN
Torque nut to 243 to 258
inch lbs.
-1BACN10HR5CDNUT
First oversize fastener.0.6401-0.64113BACB30MR10A26XBOLTF
Under the bolt head.-3BACW10BP101CDWASHER, PLAIN
Under the nut.-3BACW10BP101DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
Second oversize fastener.0.6557-0.65673BACB30MR10A26YBOLT
Under the bolt head.-3BACW10BP102CDWASHER, PLAIN
Under the nut.-3BACW10BP102DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
FIGURE 28: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U14 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 7 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
405 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 46

More DataHole DiaQtyIdentificationNameCode
First oversize fastener.0.5776-0.57861BACB30US9K( )XBOLT, 12 PT HEADG
Under the bolt head.-1BACW10BP91ACWASHER, PLAIN AND
COUNTERSUNK
Self-aligning washer set.
Under the nut.
-1BACW10CA91CVWASHER
Self-aligning washer set.
Under the nut.
-1BACW10CA10CCWASHER
Between nut and self-
aligning washer, for grip
length adjustment.
-1BACW10BP91DPWASHER, PLAIN
Torque nut to 1746 to
1854 inch lbs.
-1BACN10HR9CDNUT
FIGURE 28: RIGHT SIDE UNDERWING LONGERON FITTING P/N 111T4020U14 - TENSION BOLT AND
INTERNAL BATHTUB FITTING - INSTALLATION
(SHEET 8 OF 8)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
406 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 47 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
STA
783.04  FUSELAGE
UPPER DRAG  SKIN  FRONT SPAR
SPLICE ANGLE
LOWER DRAG -  600  UNDERWING
SPLICE ANGLE  LONGERON
FITTING
3 LOCATIONS
UNDERWING LONGERON FITTING
3054493
FIGURE 33: LEFT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENERS -
INSTALLATION
(SHEET 1 OF 3)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  407 of 416

### Page 48

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 one side of the airplane.
More DataQtyIdentificationNameTaskStep
(b) Drill to final hole
size.
--STRUCTUREDrill / Ream1
---STRUCTUREClean/Deburr
---SHIM, LAMINATEDClean/Deburr
(a) Refer to the fas-
tener code table.
3-FASTENERInstall (New)
(a) Install fasteners wet with BMS 5-45. Refer to SOPM 20-50-19 as an accepted procedure.
(b) If shims were removed for re-use or replacement shims were fabricated, remove them after drilling to
clean/deburr the structure.
FIGURE 33: LEFT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENERS -
INSTALLATION
(SHEET 2 OF 3)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
408 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 49

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure.
A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the
number of fasteners necessary for this figure.
More DataHole DiaQtyIdentificationNameCode
Nominal size fastener.0.6245-0.62553BACB30MR10A26BOLTA
Under the bolt head.-3BACW10BP10CDWASHER, PLAIN
Under the nut.-3BACW10BP10DPWASHER
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
First oversize fastener.0.6401-0.64113BACB30MR10A26XBOLT
Under the bolt head.-3BACW10BP101CDWASHER, PLAIN
Under the nut.-3BACW10BP101DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
Second oversize fastener.0.6557-0.65673BACB30MR10A26YBOLT
Under the bolt head.-3BACW10BP102CDWASHER, PLAIN
Under the nut.-3BACW10BP102DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
FIGURE 33: LEFT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENERS -
INSTALLATION
(SHEET 3 OF 3)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
409 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 50 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
STA
FUSELAGE  783.04
FRONT SPAR  SKIN  UPPER DRAG
SPLICE ANGLE
UNDERWING  • LOWER DRAG
LONGERON  SPLICE ANGLE
FITTING
3 LOCATIONS
UNDERWING LONGERON FITTING
3054688
FIGURE 34: RIGHT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENERS -
INSTALLATION
(SHEET 1 OF 3)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  410 of 416

### Page 51

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 one side of the airplane.
More DataQtyIdentificationNameTaskStep
(b) Drill to final hole
size.
--STRUCTUREDrill / Ream1
---STRUCTUREClean/Deburr
---SHIM, LAMINATEDClean/Deburr
(a) Refer to the fas-
tener code table.
3-FASTENERInstall (New)2
(a) Install fasteners wet with BMS 5-45. Refer to SOPM 20-50-19 as an accepted procedure.
(b) If shims were removed for re-use or replacement shims were fabricated, remove them after drilling to
clean/deburr the structure.
FIGURE 34: RIGHT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENERS -
INSTALLATION
(SHEET 2 OF 3)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
411 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 52

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the figure.
A number in the lower right corner gives the grip length of the fastener. The QTY numbers shown below are the
number of fasteners necessary for this figure.
More DataHole DiaQtyIdentificationNameCode
Nominal size fastener.0.6245-0.62553BACB30MR10A26BOLTA
Under the bolt head.-3BACW10BP10CDWASHER, PLAIN
Under the nut.-3BACW10BP10DPWASHER
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
First oversize fastener.0.6401-0.64113BACB30MR10A26XBOLT
Under the bolt head.-3BACW10BP101CDWASHER, PLAIN
Under the nut.-3BACW10BP101DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
Second oversize fastener.0.6557-0.65673BACB30MR10A26YBOLT
Under the bolt head.-3BACW10BP102CDWASHER, PLAIN
Under the nut.-3BACW10BP102DPWASHER, PLAIN
Torque nut to 1843 to
1957 inch lbs.
-3BACN11Z10CDNUT
FIGURE 34: RIGHT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENERS -
INSTALLATION
(SHEET 3 OF 3)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
412 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 53 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
STA
783.04  FUSELAGE
SKIN  FRONT SPAR
UPPER DRAG
SPLICE ANGLE
LOWER DRAG  SPLICE ANGLE  1600  •  LONGERON  UNDERWING
FITTING
TYPICAL CRACK
UNDERWING LONGERON FITTING
3064154
FIGURE 35: LEFT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENER HOLES -
CRACK REPAIR
(SHEET 1 OF 2)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  413 of 416

### Page 54

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 one side of the airplane.
More DataQtyIdentificationNameTaskStep
(a)(b)(c)--CRACKRemove1
(a) Do the oversize hole repair by reaming in 1/64 inch increments. Do an open hole HFEC inspection in
accordance with 767 NDT Manual Part 6, 51-00-04, or 767 NDT Manual Part 6, 51-00-11, or 767 NDT
Manual 767 NDT Part 6, 51-00-16 after each oversize to confirm crack-free condition. For oversize fas-
tener hole diameter limits, refer to 767-200 SRM 51-40-05, 767-200SF SRM 51-40-05, 767-300 SRM 51-
40-05, 767-300BCF SRM 51-40-05, 767-300F SRM 51-40-05, or 767-400ER SRM 51-40-05 as an accepted
procedure.
(b) Do not perform insurance cut after crack has been removed and the hole is confirmed crack-free by the
high frequency eddy current inspection.
(c) Do not oversize hole more than 0.6567 inch diameter (maximum diameter for 2nd oversize of nominal
production fastener).
FIGURE 35: LEFT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENER HOLES -
CRACK REPAIR
(SHEET 2 OF 2)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
414 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

### Page 55 (OCR)

REQUIREMENTS BULLETIN 767-57A0148
ALERT  ALERT
FUSELAGE 783.04
FRONT SPAR  SKIN
UPPER DRAG
SPLICE ANGLE
UNDERWING  LOWER DRAG
LONGERON  SPLICE ANGLE
FITTING
O TYPICAL CRACK
UNDERWING LONGERON FITTING
3064158
FIGURE 36: RIGHT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENER HOLES -
CRACK REPAIR
(SHEET 1 OF 2)
Original Issue: October 10, 2024
Export Controlled ECCN: 9E991  767-57A0148 RB
See page 1 for details  415 of 416

### Page 56

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 one side of the airplane.
More DataQtyIdentificationNameTaskStep
(a)(b)(c)--CRACKRemove1
(a) Do the oversize hole repair by reaming in 1/64 inch increments. Do an open hole HFEC inspection in
accordance with 767 NDT Manual Part 6, 51-00-04, or 767 NDT Manual Part 6, 51-00-11, or 767 NDT
Manual 767 NDT Part 6, 51-00-16 after each oversize to confirm crack-free condition. For oversize fas-
tener hole diameter limits, refer to 767-200 SRM 51-40-05, 767-200SF SRM 51-40-05, 767-300 SRM 51-
40-05, 767-300BCF SRM 51-40-05, 767-300F SRM 51-40-05, or 767-400ER SRM 51-40-05 as an accepted
procedure.
(b) Do not perform insurance cut after crack has been removed and the hole is confirmed crack-free by the
high frequency eddy current inspection.
(c) Do not oversize hole more than 0.6567 inch diameter (maximum diameter for 2nd oversize of nominal
production fastener).
FIGURE 36: RIGHT SIDE UNDERWING LONGERON FITTING - FORWARD LOWER FASTENER HOLES -
CRACK REPAIR
(SHEET 2 OF 2)
Export Controlled ECCN: 9E991
See page 1 for details
Original Issue: October 10, 2024
767-57A0148 RB
416 of 416
REQUIREMENTS BULLETIN 767-57A0148
ALERTALERT

---
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