# Boeing Alert Requirements Bulletin 757-53A0106 RB: No revision named

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- Title as filed: RB-757-53A0106-00 RB
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### Page 1

Commercial 
Airplanes
757
Requirements Bulletin
ALERT
Number: 757-53A0106 RB
Original Issue: January 03, 2023
ATA System: 5331
SUBJECT: FUSELAGE - Structural Inspections - Main Deck Cargo Door Hinge Attachment Holes
Inspection
EXPORT CONTROLLED - This technology or software is subject to the U.S. Export Administration Regulations
(EAR), (15 C.F.R. Parts 730-774). No authorization from the U.S. Department of Commerce is required for
export, re-export, in-country transfer, or access EXCEPT to country group E:1 or E:2 countries/persons per
Supp.1 to Part 740 of the EAR.
9E991ECCN:
Copyright © 2023 Boeing.
Unpublished Work. All Rights Reserved.
Treatment of this document and its content is governed by contract with Boeing. Rights to use this document
are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The
Boeing Company.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner,
BBJ, DC-8, DC-9, DC-10, KC-10, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and
Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in
connection with this document unless provided in writing by Boeing.
Original Issue: January 03, 2023
757-53A0106 RB
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3.0

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Table of Contents
1. EFFECTIVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
A. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
B. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. CONCURRENT REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. COMPLIANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. APPROVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
A. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
B. Work Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
FIGURE 1: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR
FORWARD HINGE ATTACHMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
FIGURE 2: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR
AFT HINGE ATTACHMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
APPENDIX C: MAINTENANCE RECORDS CHECK FOR ANY REPAIR AT THE FORWARD AND AFT HINGE
AREAS OF THE MAIN DECK CARGO DOOR CUTOUT. . . . . . . . . . . . . . . . . . . 29
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Commercial 
Airplanes
757
Requirements Bulletin
ALERT
Number: 757-53A0106 RB
Original Issue: January 03, 2023
ATA System: 5331
SUBJECT: FUSELAGE - Structural Inspections - Main Deck Cargo Door Hinge Attachment Holes
Inspection
THIS DOCUMENT 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 DOCUMENT
TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE
NEW OWNER. THIS IS AN ENHANCED REQUIRED FOR COMPLIANCE DOCUMENT. THE BOEING
PROCESSES USED TO CREATE THE SERVICE BULLETIN (SB) AND THE REQUIREMENTS BULLETIN
(RB) ENSURE THAT THE INFORMATION BETWEEN "RC START" AND "RC END" IN THE SB ARE IDENTICAL
TO THE INFORMATION IN THE SAME SECTIONS (COMPLIANCE, WORK INSTRUCTIONS…) OF THE RB
WHICH THE SB REFERS TO AS THE RELATED DOCUMENT.
1. Effectivity
A. Airplanes
This bulletin is applicable to 757-200, 757-200CB, 757-200PF Airplane(s), line number(s) 9-11,
13, 16, 23-25, 29-30, 32-33, 50, 52, 54, 58, 63, 77-78, 81, 89-90, 93, 98, 123, 139, 141, 143, 145,
147, 149, 160, 166, 168, 175-176, 179, 181-182, 184, 186, 189, 191, 193, 195, 197, 199, 210-211,
214, 237, 258, 300, 314, 318, 322, 326, 330, 334, 340, 395, 399, 403, 407, 411, 477, 481, 485,
489, 493, 569, 573, 577, 579, 581, 625, 628, 631, 634, 636, 638, 640, 642, 644, 646, 649, 651,
654, 656, 659, 675, 679, 683, 687, 691, 728-730, 733-734, 755, 759, 763, 765, 767, 769, 771,
774, 776, 778, 813, 815, 823, 879, 882 in 3 Group(s). Where the effectivity is presented with
hyphens between line numbers, the airplane applicability means "through" and "inclusive", e.g.
line numbers 1-9 means line numbers 1 through 9 inclusive.
The Variable Numbers and Group Information for the applicable airplanes is given below.
DESCRIPTIONCONFIGURATIONGROUP
757-200PF Package Freighter Airplanes.-1
757-200 airplanes that have been converted into Special Freighters
(SF) in accordance with Boeing STC ST00916WI-D.
-2
757-200CB Combination Freighter Airplane.-3
Airplane Models:
757-200, 757-200CB, 757-200PF
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GroupVariable Number
2NA201 - NA204
2NA206 - NA213
2NA215 - NA236
GroupVariable Number
1NC901 - NC951
1NC971 - NC974
3ND895
GroupVariable Number
1NS601 - NS616
1NT001 - NT009
--
B. Spares Affected
None.
2. CONCURRENT REQUIREMENTS
None.
3. COMPLIANCE
The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to
Requirements Bulletin 757-53A0106 RB. The Airworthiness Directive will make the compliance tasks and
times given in Requirements Bulletin 757-53A0106 RB mandatory.
Accomplish the required action(s), based on the applicable condition(s) in Tables 1 and 2, in accordance
with Accomplishment Instructions.
When more than one OPTION is given for a CONDITION, do only one of the OPTION numbers. When
more than one ACTION is given for a CONDITION or an OPTION, do all of the ACTION numbers for that
CONDITION or OPTION.
Group 1, 3:
Table 1: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Repeat Interval
(Not to Exceed)
Boeing Recommended
Compliance Time (Whichever
Occurs Later)
ActionCondition
-Within 2,800
flight cycles af-
ter the Original
Issue date of
Requirements
Bulletin 757-
53A0106 RB.
Before 27,500
total flight cy-
cles.
Do a Maintenance Records
Check (MRC) for any repair
at the forward and aft hinge
areas of the main deck cargo
door cutout.
All Airplanes.
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REQUIREMENTS BULLETIN 757-53A0106
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### Page 7

Group 1, 3:
Table 1: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Repeat Interval
(Not to Exceed)
Boeing Recommended
Compliance Time (Whichever
Occurs Later)
ActionCondition
-Within 500 flight cycles or 6
months, whichever comes first,
after the MRC has been per-
formed.
CONDITION 1 (ACTION 1):
Contact The Boeing Compa-
ny for alternative inspection
and corrective action instruc-
tions.
CONDITION 1:
ANY REPAIR FOUND.
-At times provided in CONDI-
TION 1 (ACTION 1).
CONDITION 1 (ACTION 2):
Do the alternative inspections
and applicable corrective ac-
tions.
-Within 3,300
flight cycles af-
ter the Original
Issue date of
Requirements
Bulletin 757-
53A0106 RB.
Before 28,000
total flight cy-
cles.
CONDITION 1 (ACTION 3):
Do an open hole High Fre-
quency Eddy Current (HFEC)
inspection of the bear strap,
skin, doubler and upper sill
chord at the main deck cargo
door hinge attachment holes
for any crack in the unre-
paired areas. (a)
-Before further flight.CONDITION 1.1 (ACTION 1):CONDITION 1.1:
Contact The Boeing Compa-
ny for repair instructions and
do the repair.
ANY CRACK FOUND.
7,000 flight cycles.-CONDITION 1.1 (ACTION 2):
Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
7,000 flight cycles.-Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
CONDITION 1.2:
NO CRACK FOUND.
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### Page 8

Group 1, 3:
Table 1: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Repeat Interval
(Not to Exceed)
Boeing Recommended
Compliance Time (Whichever
Occurs Later)
ActionCondition
-Within 3,300
flight cycles af-
ter the Original
Issue date of
Requirements
Bulletin 757-
53A0106 RB.
Before 28,000
total flight cy-
cles.
Do an open hole High Fre-
quency Eddy Current (HFEC)
inspection of the bear strap,
skin, doubler and upper sill
chord at the main deck cargo
door hinge attachment holes
for any crack.
CONDITION 2:
NO REPAIR FOUND.
-Before further flight.CONDITION 2.1 (ACTION 1):CONDITION 2.1:
Contact The Boeing Compa-
ny for repair instructions and
do the repair.
ANY CRACK FOUND.
7,000 flight cycles.-CONDITION 2.1 (ACTION 2):
Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
7,000 flight cycles.-Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
CONDITION 2.2:
NO CRACK FOUND.
(a) It is not required to do the open hole High Frequency Eddy Current (HFEC) inspection in accordance
with Requirements Bulletin 757-53A0106 RB in the repair affected area if the repair meets all of the
conditions that follow:
1. The repair inspection plan was approved after the Original Issue date of Requirements Bulletin
757-53A0106 RB.
2. The repair plan is approved by the Boeing Organization Designation Authorization (ODA) via a
FAA Form 8100-9.
3. The FAA Form 8100-9 approval defines the repair affected area, states the inspection plan for
the repair affected area, and approves the inspection plan as an alternative inspection method
to the inspections recommended in Requirements Bulletin 757-53A0106 RB.
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REQUIREMENTS BULLETIN 757-53A0106
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### Page 9

Group 2:
Table 2: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Repeat Interval
(Not to Exceed)
Boeing Recommended
Compliance Time (Whichever
Occurs Later)
ActionCondition
-Within 2,800
flight cycles af-
ter the Original
Issue date of
Requirements
Bulletin 757-
53A0106 RB.
Within 27,500
flight cycles af-
ter the airplane
is converted in-
to a Special
Freighter (SF).
Do a Maintenance Records
Check (MRC) for any repair
at the forward and aft hinge
areas of the main deck cargo
door cutout.
All Airplanes.
-Within 500 flight cycles or 6
months, whichever comes first,
after the MRC has been per-
formed.
CONDITION 3 (ACTION 1):
Contact The Boeing Compa-
ny for alternative inspection
and corrective action instruc-
tions.
CONDITION 3:
ANY REPAIR FOUND.
-At times provided in CONDI-
TION 3 (ACTION 1).
CONDITION 3 (ACTION 2):
Do the alternative inspections
and applicable corrective ac-
tions.
-Within 3,300
flight cycles af-
ter the Original
Issue date of
Requirements
Bulletin 757-
53A0106 RB.
Within 28,000
flight cycles af-
ter the airplane
is converted in-
to a Special
Freighter (SF).
CONDITION 3 (ACTION 3):
Do an open hole High Fre-
quency Eddy Current (HFEC)
inspection of the bear strap,
skin, doubler and upper sill
chord at the main deck cargo
door hinge attachment holes
for any crack in the unre-
paired areas. (a)
-Before further flight.CONDITION 3.1 (ACTION 1):CONDITION 3.1:
Contact The Boeing Compa-
ny for repair instructions and
do the repair.
ANY CRACK FOUND.
7,000 flight cycles.-CONDITION 3.1 (ACTION 2):
Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
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### Page 10

Group 2:
Table 2: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Repeat Interval
(Not to Exceed)
Boeing Recommended
Compliance Time (Whichever
Occurs Later)
ActionCondition
7,000 flight cycles.-Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
CONDITION 3.2:
NO CRACK FOUND.
-Within 3,300
flight cycles af-
ter the Original
Issue date of
Requirements
Bulletin 757-
53A0106 RB.
Within 28,000
flight cycles af-
ter the airplane
is converted in-
to a Special
Freighter (SF).
Do an open hole High Fre-
quency Eddy Current (HFEC)
inspection of the bear strap,
skin, doubler and upper sill
chord at the main deck cargo
door hinge attachment holes
for any crack.
CONDITION 4:
NO REPAIR FOUND.
-Before further flight.CONDITION 4.1 (ACTION 1):CONDITION 4.1:
Contact The Boeing Compa-
ny for repair instructions and
do the repair.
ANY CRACK FOUND.
7,000 flight cycles.-CONDITION 4.1 (ACTION 2):
Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
7,000 flight cycles.-Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
CONDITION 4.2:
NO CRACK FOUND.
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REQUIREMENTS BULLETIN 757-53A0106
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### Page 11

Group 2:
Table 2: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Repeat Interval
(Not to Exceed)
Boeing Recommended
Compliance Time (Whichever
Occurs Later)
ActionCondition
(a) It is not required to do the open hole High Frequency Eddy Current (HFEC) inspection in accordance
with Requirements Bulletin 757-53A0106 RB in the repair affected area if the repair meets all of the
conditions that follow:
1. The repair inspection plan was approved after the Original Issue date of Requirements Bulletin
757-53A0106 RB.
2. The repair plan is approved by the Boeing Organization Designation Authorization (ODA) via a
FAA Form 8100-9.
3. The FAA Form 8100-9 approval defines the repair affected area, states the inspection plan for
the repair affected area, and approves the inspection plan as an alternative inspection method
to the inspections recommended in Requirements Bulletin 757-53A0106 RB.
4. APPROVAL
This Requirements Bulletin was examined by the Federal Aviation Administration (FAA). The changes
specified in this document comply with the applicable regulations and are FAA approved, as well as European
Union Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved
airplanes listed in this Requirements Bulletin effectivity. This document and its approval were based on the
airplane in its original Boeing delivery configuration or as modified by other Boeing changes.
If an airplane has a non-Boeing modification or repair that affects a component or system also affected by
this Requirements Bulletin, the operator is responsible for obtaining appropriate regulatory agency approval
before incorporating this Requirements Bulletin.
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### Page 12

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### Page 13

5.    ACCOMPLISHMENT INSTRUCTIONS
A. GENERAL INFORMATION
NOTE: 1. This is an Enhanced Required for Compliance document. There will be a separate
Service Bulletin (SB) and a separate Requirements Bulletin (RB). If an RB is mandated
by an Airworthiness Directive (AD), then all applicable requirements specified in the
RB must be done. For the related SB, some locations are marked RC Start and RC
End to identify the requirements that are restated from the RB. For the related SB,
the areas between RC Start and RC End, including sub-steps and any figures
identified between RC Start and RC End, must be done to comply with the AD.
Therefore, an Alternative Method of Compliance (AMOC) is required for any deviations
to steps between RC Start and RC End, including substeps and identified figures.
For the related SB, the steps not between RC Start and RC End may be deviated
from using accepted methods in accordance with the operator's maintenance or
inspection program without obtaining approval of an AMOC; this is provided that the
steps between RC Start and RC End, including sub-steps and identified figures, can
still be done as specified, and the airplane can be put back in an airworthy condition.
Figures not required for compliance are omitted from the RB.
2. This is an Enhanced Required for Compliance document. The Boeing processes
used to create the Service Bulletin (SB) and the Requirements Bulletin (RB) ensure
that the information between "RC Start" and "RC End" in the SB are identical to the
information in the same sections (Compliance, Work Instructions...) of the RB which
the SB refers to as the related document.
3. The compliance times for the actions in WORK INSTRUCTIONS are in Compliance.
4. Boeing Service Letter 757-SL-51-022, Damage Reporting and Repair Plan/Design
Guidelines, is an acceptable procedure to request information from Boeing for
additional structural repair instructions. The Service Letter describes what information
must be provided to Boeing before a structural repair can be provided.
5. Unless shown differently, these dimensions and tolerances are used:
– Linear dimensions are in inches
– Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus
or minus 0.03 inch
– Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch
– Angular tolerance is plus or minus 2 degrees
– Hole dimensions for standard solid rivets and fasteners are in Structural Repair
Manual (SRM) Chapter 51
– Torque Values:
— Values for structural fasteners are given in 757 Structural Repair Manual,
Chapter 51.
— Values for airframe maintenance tasks are included in Chapter 20 of 757
Aircraft Maintenance Manual (AMM).
— Non-standard torque values for maintenance tasks are included in the
applicable installation step.
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### Page 14

6. These work instructions refer to procedures included in other Boeing documents.
When the words "refer to" are used and the operator has an accepted alternative
procedure, the accepted alternative procedure can be used. When the words "in
accordance with" are included in the instruction, the procedure in the Boeing document
must be used.
7. If it is necessary to remove more parts for access, you can remove those parts. If
you can get access without removing identified parts, it is not necessary to remove
all of the identified parts. Jacking and shoring limitations must be observed.
8. When more than one OPTION is given for a CONDITION, do only one of the OPTION
numbers. When more than one ACTION is given for a CONDITION or an OPTION,
do all of the ACTION numbers for that CONDITION or OPTION.
9. Use the approved fastener, process and material substitutions in accordance with
SRM Chapter 51.
10. Documentation should exist for all repairs in the designated areas in this bulletin and
therefore a maintenance records check is needed to conclusively determine if a
repair is installed or not.
11. Unrepaired areas are defined as the entire inspection area defined in the requirements
bulletin except the area defined as the repair affected area.
B. WORK INSTRUCTIONS
Actions Requirements For Compliance
1. Requirements
Group 1, 3:
Table 1: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Refer to the listed proce-
dures in SB 757-53A0106
Original Issue or later
approved revisions as an
accepted procedure.
Method of ComplianceActionCondition
-APPENDIX CDo a Maintenance Records
Check (MRC) for any repair
at the forward and aft hinge
areas of the main deck cargo
door cutout.
All Airplanes.
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REQUIREMENTS BULLETIN 757-53A0106
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### Page 15

Group 1, 3:
Table 1: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Refer to the listed proce-
dures in SB 757-53A0106
Original Issue or later
approved revisions as an
accepted procedure.
Method of ComplianceActionCondition
--CONDITION 1 (ACTION 1):CONDITION 1:
Contact The Boeing Compa-
ny for alternative inspection
and corrective action instruc-
tions.
ANY REPAIR FOUND.
--CONDITION 1 (ACTION 2):
Do the alternative inspections
and applicable corrective ac-
tions.
PART 1: OPEN ACCESS.-CONDITION 1 (ACTION 3):
Do an open hole High Fre-
quency Eddy Current (HFEC)
inspection of the bear strap,
skin, doubler and upper sill
chord at the main deck cargo
door hinge attachment holes
for any crack in the unre-
paired areas. (a)
-FIGURE 1 and FIGURE 2
--CONDITION 1.1 (ACTION 1):CONDITION 1.1:
Contact The Boeing Compa-
ny for repair instructions and
do the repair.
ANY CRACK FOUND.
PART 2: CLOSE AC-
CESS.
-CONDITION 1.1 (ACTION 2):
Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
PART 1: OPEN ACCESS.-
.FIGURE 1 and FIGURE 2
PART 2: CLOSE AC-
CESS.
-Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
CONDITION 1.2:
NO CRACK FOUND.
PART 1: OPEN ACCESS.-
-FIGURE 1 and FIGURE 2
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757-53A0106 RB
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REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

### Page 16

Group 1, 3:
Table 1: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Refer to the listed proce-
dures in SB 757-53A0106
Original Issue or later
approved revisions as an
accepted procedure.
Method of ComplianceActionCondition
PART 1: OPEN ACCESS.-Do an open hole High Fre-
quency Eddy Current (HFEC)
inspection of the bear strap,
skin, doubler and upper sill
chord at the main deck cargo
door hinge attachment holes
for any crack.
CONDITION 2:
NO REPAIR FOUND. -FIGURE 1 and FIGURE 2
--CONDITION 2.1 (ACTION 1):CONDITION 2.1:
Contact The Boeing Compa-
ny for repair instructions and
do the repair.
ANY CRACK FOUND.
PART 2: CLOSE AC-
CESS.
-CONDITION 2.1 (ACTION 2):
Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
PART 1: OPEN ACCESS.-
-FIGURE 1 and FIGURE 2
PART 2: CLOSE AC-
CESS.
-Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
CONDITION 2.2:
NO CRACK FOUND.
PART 1: OPEN ACCESS.-
-FIGURE 1 and FIGURE 2
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 03, 2023
757-53A0106 RB
16 of 32
REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

### Page 17

Group 1, 3:
Table 1: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Refer to the listed proce-
dures in SB 757-53A0106
Original Issue or later
approved revisions as an
accepted procedure.
Method of ComplianceActionCondition
(a) It is not required to do the open hole High Frequency Eddy Current (HFEC) inspection in accordance with
Requirements Bulletin 757-53A0106 RB in the repair affected area if the repair meets all of the conditions
that follow:
1. The repair inspection plan was approved after the Original Issue date of Requirements Bulletin
757-53A0106 RB.
2. The repair plan is approved by the Boeing Organization Designation Authorization (ODA) via a
FAA Form 8100-9.
3. The FAA Form 8100-9 approval defines the repair affected area, states the inspection plan for
the repair affected area, and approves the inspection plan as an alternative inspection method
to the inspections recommended in Requirements Bulletin 757-53A0106 RB.
Group 2:
Table 2: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Refer to the listed proce-
dures in SB 757-53A0106
Original Issue or later
approved revisions as an
accepted procedure.
Method of ComplianceActionCondition
-APPENDIX CDo a Maintenance Records
Check (MRC) for any repair
at the forward and aft hinge
areas of the main deck cargo
door cutout.
All Airplanes.
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 03, 2023
757-53A0106 RB
17 of 32
REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

### Page 18

Group 2:
Table 2: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Refer to the listed proce-
dures in SB 757-53A0106
Original Issue or later
approved revisions as an
accepted procedure.
Method of ComplianceActionCondition
--CONDITION 3 (ACTION 1):CONDITION 3:
Contact The Boeing Compa-
ny for alternative inspection
and corrective action instruc-
tions.
ANY REPAIR FOUND.
--CONDITION 3 (ACTION 2):
Do the alternative inspections
and applicable corrective ac-
tions.
PART 1: OPEN ACCESS.-CONDITION 3 (ACTION 3):
Do an open hole High Fre-
quency Eddy Current (HFEC)
inspection of the bear strap,
skin, doubler and upper sill
chord at the main deck cargo
door hinge attachment holes
for any crack in the unre-
paired areas. (a)
-FIGURE 1 and FIGURE 2
--CONDITION 3.1 (ACTION 1):CONDITION 3.1:
Contact The Boeing Compa-
ny for repair instructions and
do the repair.
ANY CRACK FOUND.
PART 2: CLOSE AC-
CESS.
-CONDITION 3.1 (ACTION 2):
Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
PART 1: OPEN ACCESS.-
.FIGURE 1 and FIGURE 2
PART 2: CLOSE AC-
CESS.
-Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
CONDITION 3.2:
NO CRACK FOUND.
PART 1: OPEN ACCESS.-
-FIGURE 1 and FIGURE 2
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 03, 2023
757-53A0106 RB
18 of 32
REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

### Page 19

Group 2:
Table 2: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Refer to the listed proce-
dures in SB 757-53A0106
Original Issue or later
approved revisions as an
accepted procedure.
Method of ComplianceActionCondition
PART 1: OPEN ACCESS.-Do an open hole High Fre-
quency Eddy Current (HFEC)
inspection of the bear strap,
skin, doubler and upper sill
chord at the main deck cargo
door hinge attachment holes
for any crack.
CONDITION 4:
NO REPAIR FOUND. -FIGURE 1 and FIGURE 2
--CONDITION 4.1 (ACTION 1):CONDITION 4.1:
Contact The Boeing Compa-
ny for repair instructions and
do the repair.
ANY CRACK FOUND.
PART 2: CLOSE AC-
CESS.
-CONDITION 4.1 (ACTION 2):
Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
PART 1: OPEN ACCESS.-
-FIGURE 1 and FIGURE 2
PART 2: CLOSE AC-
CESS.
-Repeat the open hole High
Frequency Eddy Current
(HFEC) inspection of the bear
strap, skin, doubler and upper
sill chord at the main deck
cargo door hinge attachment
holes for any crack in the un-
repaired areas. (a)
CONDITION 4.2:
NO CRACK FOUND.
PART 1: OPEN ACCESS.-
-FIGURE 1 and FIGURE 2
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 03, 2023
757-53A0106 RB
19 of 32
REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

### Page 20

Group 2:
Table 2: Inspection of Bear Strap, Skin, Doubler, and Upper Sill Chord at the Main Deck Cargo Door
Hinge Attachment Holes
Refer to the listed proce-
dures in SB 757-53A0106
Original Issue or later
approved revisions as an
accepted procedure.
Method of ComplianceActionCondition
(a) It is not required to do the open hole High Frequency Eddy Current (HFEC) inspection in accordance with
Requirements Bulletin 757-53A0106 RB in the repair affected area if the repair meets all of the conditions
that follow:
1. The repair inspection plan was approved after the Original Issue date of Requirements Bulletin
757-53A0106 RB.
2. The repair plan is approved by the Boeing Organization Designation Authorization (ODA) via a
FAA Form 8100-9.
3. The FAA Form 8100-9 approval defines the repair affected area, states the inspection plan for
the repair affected area, and approves the inspection plan as an alternative inspection method
to the inspections recommended in Requirements Bulletin 757-53A0106 RB.
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 03, 2023
757-53A0106 RB
20 of 32
REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

### Page 21 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
JOD
STA
660
BL-O
S-3L
STA
440
MAIN DECK
CARGO DOOR
3004254
FIGURE 1: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR
FORWARD HINGE ATTACHMENT
(SHEET 1 OF 4)
Original Issue: January 03, 2023
757-53A0106 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  21 of 32

### Page 22 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
SKIN  BEAR STRAP
===========
* * 6"***  - S-2L
24 LOCATIONS
X2 3
• -S-3L
STA  STA
489.75  497.35  DOUBLER
HINGE
DOOR CUTOUT  FWD
FWD
OPEN HOLE HFEC INSPECTION AREA
VIEW LOOKING DOWN AND INBOARD
3004853
FIGURE 1: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR
FORWARD HINGE ATTACHMENT
(SHEET 2 OF 4)
Original Issue: January 03, 2023
Export Controlled ECCN: 9E991  757-53A0106 RB
Copyright © Unpublished Work - See page 1 for details.  22 of 32

### Page 23 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
INTERCOSTAL
DOUBLER  CHORD
UPPER SILL  BEAR STRAP
CHORD
SKIN
HINGE
S-2L
S-3L
INBD
OPEN HOLE HFEC INSPECTION AREA
VIEW LOOKING FORWARD
A-A
3005579
FIGURE 1: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR
FORWARD HINGE ATTACHMENT
(SHEET 3 OF 4)
Original Issue: January 03, 2023
Export Controlled ECCN: 9E991  757-53A0106 RB
Copyright © Unpublished Work - See page 1 for details.  23 of 32

### Page 24

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
TO AVOID DAMAGE OR INJURY TO PERSONNEL, ONLY REMOVE, INSPECT AND INSTALL
ONE FASTENER AT A TIME IF MAIN DECK CARGO DOOR IS INSTALLED ON THE
AIRPLANE.
WARNING
More DataQtyIdentificationNameTaskStep
(a)(b)24-FASTENERRemove / Keep1
(c)--BEAR STRAPInspect2
(c)--SKINInspect
(c)--DOUBLERInspect
(c)--UPPER SILL CHORDInspect
(b)24-FASTENERInstall (Kept)3
(a) If the main deck cargo door has been removed from the airplane, it is acceptable to remove and inspect
all fasteners at the same time.
(b) Remove and install fasteners in accordance with 757-200 SRM 51-40-02, 757-200CB SRM 51-40-02 or
757-200PF SRM 51-40-02.
(c) Do an open hole High Frequency Eddy Current (HFEC) inspection of the bear strap, skin, doubler and
upper sill chord at the main deck cargo door hinge attachment holes for any crack in accordance with 757
NDT Manual Part 6, 51-00-04, 757 NDT Manual Part 6, 51-00-11 or 757 NDT Manual Part 6, 51-00-16.
FIGURE 1: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR
FORWARD HINGE ATTACHMENT
(SHEET 4 OF 4)
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 03, 2023
757-53A0106 RB
24 of 32
REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

### Page 25 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
JOD
STA
660
BL-O
S-3L
STA
440
MAIN DECK
CARGO DOOR
3004964
FIGURE 2: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR AFT
HINGE ATTACHMENT
(SHEET 1 OF 4)
Original Issue: January 03, 2023
757-53A0106 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  25 of 32

### Page 26 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
DOUBLER
BEAR STRAP  SKIN
S-2L -
S-3L -
STA  STA
(2)  HINGE  602.65  610.25
24 LOCATIONS
DOOR CUTOUT
AFT
OPEN HOLE HFEC INSPECTION AREA
VIEW LOOKING DOWN AND INBOARD
3004965
FIGURE 2: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR AFT
HINGE ATTACHMENT
(SHEET 2 OF 4)
Original Issue: January 03, 2023
Export Controlled ECCN: 9E991  757-53A0106 RB
Copyright © Unpublished Work - See page 1 for details.  26 of 32

### Page 27 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
DOUBLER  INTERCOSTAL
CHORD
UPPER SILL
CHORD  BEAR STRAP
SKIN
HINGE
S-2L
S-3L  INBD
OPEN HOLE HFEC INSPECTION AREA
VIEW LOOKING FORWARD
A-A
3005587
FIGURE 2: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR AFT
HINGE ATTACHMENT
(SHEET 3 OF 4)
Original Issue: January 03, 2023
Export Controlled ECCN: 9E991  757-53A0106 RB
Copyright © Unpublished Work - See page 1 for details.  27 of 32

### Page 28

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
TO AVOID DAMAGE OR INJURY TO PERSONNEL, ONLY REMOVE, INSPECT AND INSTALL
ONE FASTENER AT A TIME IF MAIN DECK CARGO DOOR IS INSTALLED ON THE
AIRPLANE.
WARNING
More DataQtyIdentificationNameTaskStep
(a)(b)24-FASTENERRemove / Keep1
(c)--BEAR STRAPInspect2
(c)--SKINInspect
(c)--DOUBLERInspect
(c)--UPPER SILL CHORDInspect
(b)24-FASTENERInstall (Kept)3
(a) If the main deck cargo door has been removed from the airplane, it is acceptable to remove and inspect
all fasteners at the same time.
(b) Remove and install fasteners in accordance with 757-200 SRM 51-40-02, 757-200CB SRM 51-40-02 or
757-200PF SRM 51-40-02.
(c) Do an open hole High Frequency Eddy Current (HFEC) inspection of the bear strap, skin, doubler and
upper sill chord at the main deck cargo door hinge attachment holes for any crack in accordance with 757
NDT Manual Part 6, 51-00-04, 757 NDT Manual Part 6, 51-00-11 or 757 NDT Manual Part 6, 51-00-16.
FIGURE 2: HIGH FREQUENCY EDDY CURRENT INSPECTION AT THE MAIN DECK CARGO DOOR AFT
HINGE ATTACHMENT
(SHEET 4 OF 4)
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 03, 2023
757-53A0106 RB
28 of 32
REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

### Page 29 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
STA
660
BL-O  S-3L
STA
440
• MAIN DECK
CARGO DOOR
3004851
APPENDIX C: MAINTENANCE RECORDS CHECK FOR ANY REPAIR AT THE FORWARD AND AFT HINGE
AREAS OF THE MAIN DECK CARGO DOOR CUTOUT.
(SHEET 1 OF 4)
Original Issue: January 03, 2023
757-53A0106 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  29 of 32

### Page 30 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
SKIN  BEAR STRAP
DOUBLER
... Y  + 7-5-21
SKIN
UPPER EDGE
OF HINGE
DOUBLER
+ -5-3L
DOOR CUTOUT
FWD  489.75  STA  HINGE  497.35  STA  EDGE OF HINGE
SKIN CUTOUT
EDGE
- Q OF S-4L  WD
7.00 INCHES
MAINTENANCE RECORDS CHECK FOR REPAIRS IN THESE AREAS
VIEW LOOKING DOWN AND INBOARD
3004855
APPENDIX C: MAINTENANCE RECORDS CHECK FOR ANY REPAIR AT THE FORWARD AND AFT HINGER
AREAS OF THE MAIN DECK CARGO DOOR CUTOUT.
(SHEET 2 OF 4)
Original Issue: January 03, 2023
757-53A0106 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  30 of 32

### Page 31 (OCR)

REQUIREMENTS BULLETIN 757-53A0106
ALERT  ALERT
BEAR STRAP
SKIN  DOUBLER
S-2L-
HE H
+ 71
UPPER EDGE
OF HINGE
S-3L-  +++"
EDGE OF HINGE  602.65  STA  610.25  STA  AFT  DOOR CUTOUT
HINGE  SKIN CUTOUT
EDGE
ÇOF S-4L
7.00 INCHES
_ MAINTENANCE RECORDS CHECK FOR REPAIRS IN THESE AREAS
VIEW LOOKING DOWN AND INBOARD
3005575
APPENDIX C: MAINTENANCE RECORDS CHECK FOR ANY REPAIR AT THE FORWARD AND AFT HINGE
AREAS OF THE MAIN DECK CARGO DOOR CUTOUT.
(SHEET 3 OF 4)
Original Issue: January 03, 2023
Export Controlled ECCN: 9E991  757-53A0106 RB
Copyright © Unpublished Work - See page 1 for details.  31 of 32

### Page 32

More DataQtyIdentificationNameTaskStep
(a)(b)--Forward hinge
area
Maintenance
Record Check
1
(a)(b)--Aft hinge areaMaintenance
Record Check
(a) Do a maintenance records check for any repair at the forward and aft hinge areas of the main deck cargo
door cutout.
(b) Potential repairs include but are not limited to (1) corner skin repairs which would be adjacent to the forward
and aft hinges, and (2) any freeze plug repairs of the bear strap, skin, doubler and/or upper sill chord
common to the main deck cargo door hinge attachment holes, which cannot be visually detected because
they are sandwiched between the hinge and the intercostal chord.
APPENDIX C:  MAINTENANCE RECORDS CHECK FOR ANY REPAIR AT THE FORWARD AND AFT HINGE
AREAS OF THE MAIN DECK CARGO DOOR CUTOUT.
(SHEET 4 OF 4)
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 03, 2023
757-53A0106 RB
32 of 32
REQUIREMENTS BULLETIN 757-53A0106
ALERTALERT

---
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