# Airbus Service Bulletin A300-57-0142

Copy: Revision 04 ("FAA-2015-6550_SB A300-57-0142_Rev4"), 21 pages: PDF https://openairdocs.org/files/sha256/2a/ad/2aad386bc5f9dd60f2f545c08bb9970155f57a908c176211d831aa586a4adbcb; text https://openairdocs.org/service-documents/airbus/a300-57-0142/file/2aad386bc5f9.md. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2015-6550; AD 2016-18-08 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Airbus](https://openairdocs.org/service-documents/airbus.md)
- Type: Service bulletin (Service Bulletin)
- Number: A300-57-0142
- Latest revision known: A300-57-0142, Revision 04, dated March 30, 2011 (OpenAirDocs)
- Page: https://openairdocs.org/service-documents/airbus/a300-57-0142

## ADs that cite it (1) (OpenAirDocs)

Newest first, with the revision each names, as OpenAirDocs read it from the AD's text.

- [AD 2016-18-08](https://openairdocs.org/ad/2016-18-08.md), effective Oct 20, 2016: Revisions 03 and 04

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/airbus/a300-57-0142/proposed.md).

## Text (21 pages)

Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2015-6550; AD 2016-18-08 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. This text is 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)

• A300
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
AIRBUS
CUSTOMER SERVICES DIRECTORATE
1 Rond Point Maurice Bellonte
31707 BLAGNAC CEDEX FRANCE
Tel : (33) 5 61 93 33 33
Telex : AIRBU 530526F
Fax  : (33) 5 61 93 42 51
MANDATORY MANDATORY MANDATORY
ATA SYSTEM : 57
TITLE :  WINGS - INSPECTION OF THE OUTER SHROUD BOX HINGE BRACKETS
MODIFICATION No. : NONE
This page transmits revision No. 04 of Service Bulletin A300-57-0142.
ADDITIONAL WORK
No additional work is required by this revision for aircraft inspected by any
previous revision.
REASON
This Service Bulletin has been issued to inform Operators that Flight Hours (FH)
conversion figures have been added to the Accomplishment Timescale. In addition, a
maximum crack length has been included.
CHANGES
SUMMARY:
. AIRBUS address has been amended.
- REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES
• Text has been amended.
- EFFECTIVITY
• Effectivity has been updated.
- REFERENCES/REPERCUSSIONS
• TFU has been amended.
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. :  04 Mar 30/11  PAGE : 1
Printed in France

### Page 2 (OCR)

• A300
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
SERVICE BULLETIN:
AIRBUS address has been amended.
Copyright statement has been moved below TITLE.
- PLANNING INFORMATION
- EFFECTIVITY
Para. (1) Aircraft models have been updated.
• Para. (2) (a) Effectivity has been updated.
. Para. (2) (b) Effectivity has been updated.
. Para. (2) (c) Effectivity by MSN and kit/configuration has been
added.
- REASON
- Para B. (5) Accomplishment Timescale
. Text has been amended and Table has been added to show the inspection
thresholds and intervals with FH conversion figures.
- APPROVAL
. Approval statement has been amended.
• MATERIAL - COST AND AVAILABILITY
. AIRBUS address has been amended.
- REFERENCES
. AD has been removed.
- ACCOMPLISHMENT INSTRUCTIONS
- INSPECTION
. Para. (4) Text has been amended.
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 2
Printed in France

### Page 3 (OCR)

• A300
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
- CLOSE - UP
. Para. (6) Airbus Industrie has been changed to Airbus.
ACCEPTANCE/REJECTION SHEET:
. AIRBUS address has been amended.
FILING INSTRUCTIONS
1. Remove and destroy pages 1 and 2 of the Summary, pages 1, 2, 3, 4, 5, 6, 7, 8,
9, 10 and 11 of this Service Bulletin and page 1 of the Acceptance/Rejection
sheet.
2. Insert pages 1, 2, 3 and 4 of the Summary, pages 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12 and 13/14 of this Service Bulletin and page 1 of the Acceptance/Rejection
sheet.
Put this Revision Transmittal Sheet in front of the Service Bulletin.
HISTORY OF PREVIOUS REVISIONS
This is only applicable for Revision 04 and subsequent. If information is required
for revisions issued previous to this, please check your copies of Revision
Transmittal Sheet or contact AIRBUS.
REVISION SEQUENCE
ORIGINAL : Dec 17/86
REVISION No. : 01 - Apr 09/90
REVISION No. : 02 - Jan 16/91
REVISION No. : 03 - Feb 22/99
REVISION No. : 04 - Mar 30/11
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 3/4
Printed in France

### Page 4 (OCR)

$ A300
SERVICE BULLETIN
SUMMARY
AIRBUS
CUSTOMER SERVICES DIRECTORATE
1 Rond Point Maurice BELLONTE
31707 BLAGNAC CEDEX FRANCE
Tel : (33) 5 61 93 33 33
Telex : AIRBU 530526F
Fax  : (33) 5 61 93 42 51
This summary is for information only
and is not approved for modification of the aircraft
MANDATORY MANDATORY MANDATORY
ATA SYSTEM : 57
TITLE : WINGS - INSPECTION OF THE OUTER SHROUD BOX HINGE BRACKETS
MODIFICATION No. : NONE
REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES
An ALL Operator Telex (AOT) 57/86/01 has been issued to all A300 Operators
requesting inspection of the aft hinge brackets of the outer shroud box.  This
inspection revealed that approximately half of all the brackets inspected were
cracked.
This Inspection Service Bulletin introduces a visual inspection of the forward and
aft outer shroud box hinge brackets for cracks or complete fracture of the bracket.
Accomplishment of this Service Bulletin will lead to the early detection of the
cracks in the shroud box hinge brackets and will prevent the fracture of the
brackets. Fracture of a bracket would allow vertical movement of the inner shroud
box structure in the immediate area which could result in damage to the top skin of
the inboard flap.  Additionally, the loads carried through the brackets will be
transferred to the remaining supports which may also crack and cause extensive
structural damage.
A detailed visual inspection is necessary of the shroud box hinge brackets. The
inspection thresholds and repeat inspection intervals are given in this Service
Bulletin. In addition, a maximum crack length is included.
This Service Bulletin has been classified Mandatory by the issue of an
Airworthiness Directive  (AD) published by the European Aviation Safety Agency
(EASA). The AD must be used as the reference document for the mandated
accomplishment timescale.
DATE:  Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. :  04 Mar 30/11  PAGE : 1
Printed in France

### Page 5 (OCR)

A300
SERVICE BULLETIN
SUMMARY
EFFECTIVITY
This Service Bulletin  applicable to these operators:
30V,  50W, 69X, A2S, AFG,  BCS,  DHL,  F2I, FLM, IAC, IAW, IRA, IRB, IRM, KZU, MIX,
MNB, MSR, NTR, OHY, RUN,  SOP,  TDX,  TNO, TSY
SERVICE BULLETIN TO BE ACCOMPLISHED PREVIQUSLY OR SIMULTANEOUSLY
None
REFERENCES/REPERCUSSIONS
TFU  : 572200001
OEB  : None
AOT  : 57/86/01
SIL  : None
LIFE LIMIT  : None
LINE MAINTENANCE AFFECTED  : No
OTHER  : None
NATURE OF WORK
AIRCRAFT  : Yes
EQUIPMENT  : No
HARD  : No
SOFT  : No
OBRM  : No
COMPLIANCE
Mandatory
MANPOWER
Manhours
TOTAL MANHOURS  8.0
ELAPSED TIME (HOURS)  4.0
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 2
Printed in France

### Page 6 (OCR)

$ A300
SERVICE BULLETIN
SUMMARY
MATERIAL INFORMATION
AIRCRAFT DATA
None
EQUIPMENT DATA
None
APPENDICES
None
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 3
Printed in France

### Page 7 (OCR)

A300
SERVICE BULLETIN
SUMMARY
INNER SHROUD BOX
OUTER SHROUD BOX
FLAP TRACK
/ BEAM No 2
INNER SHROUD BOX
RIB 9Ù
FORWARD
OUTBOARD  FORWARD HINGE
BRACKET
OUTER SHROUD BOX
REAR HINGE BRACKET
JOINT LINE  USUAL STARTING POINT
OF CRACKS
CRACK IN VERTICAL
WEB RADIUS
CRACK IN VERTICAL FLANGE
UNDER BEARING ASSY. NUT
EXAMPLE 'A'
EXAMPLE 'B'
DATE : Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. :  04 - Mar 30/11  PAGE : 4
Printed in France

### Page 8 (OCR)

GA300
SERVICE BULLETIN
AIRBUS
CUSTOMER SERVICES DIRECTORATE
1 Rond Point Maurice Bellonte
31707 BLAGNAC CEDEX FRANCE
Tel  : (33) 5 61 93 33 33
Telex : AIRBU 530526F
Fax  : (33) 5 61 93 42 51
MANDATORY MANDATORY MANDATORY
ATA SYSTEM : 57
TITLE :  WINGS - INSPECTION OF THE OUTER SHROUD BOX HINGE BRACKETS
MODIFICATION No. : NONE
This document contains AIRBUS PROPRIETARY INFORMATION and shall at alL times remain
the property of AIRBUS; no intellectual property right or license is granted by
AIRBUS in connection with any information contained in it. It is delivered on the
express condition that said document and the information contained in it shall be
treated as confidential, shall not be used for any purpose other than that for which
it is hereby delivered. It shall not be disclosed in whole or in part to third
parties and shall not be duplicated in any manner (except for the purposes of
performing the tasks described hereunder and provided that any recipient of such
document shall comply with the conditions herein), without AIRBUS prior written
consent.
1. PLANNING INFORMATION
A _  EFFECTIVITY
(1)  Models
B2-1C, B2-203, B2K-3C, B4-103, B4-120, 84-203, B4-20, C4-203,
F4 - 203
(2)  Aircraft
(a)  Effectivity by MSN
The Service Bulletin is applicable to aircraft MSN:
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 1
Printed in France

### Page 9 (OCR)

DA300
SERVICE BULLETIN
0003 0019 0041 0044 0045 0047 0053 0055 0063 0073 0074 0075 0078
0079  0080  0082 0083 0084 0085 0090 0093 0094 0095 0100 0101 0105
0107  0116  0117 0121 0123 0124 0125 0126 0128  0129 0133 0134 0135
0141 0147 0148 0149  0151 0152 0154 0155
0173 0175 0176 0180 0181 0182 0183 0184 0185
0196 0199 0200 0203 0204 0207 0208 0210 0211
0220 0226 0227 0234  0235 0236 0239 0240 0243
0255 0256 0259 0261  0265 0271 0274 0277 0289
0292 0299 0302 0304
(b)  The Operator MSN relationship is provided for information only and
is correct at the time of issue in accordance with the information
available to AIRBUS. Any further changes resulting from transfer
of an aircraft one Operator to another will not be reflected in
this list unless the Service Bulletin is revised for another
reason.
OPERATOR  MSN
30V  0083
50W  0003
69x  0073
A2S  0063
AFG  0180 0190
BCS  0095  0116  0148  0150  0152  0184  0189
0199  0208  0219  0220  0234 0235  0236
0250  0259  0274 0289
DHL  0084 0085  0141 0149 0249 0265
F21  0079 0093 0094 0128 0133 0135 0136
0137 0156 0170 0243
FLM  0082 0151 0176 0256
IAC  0181 0182 0240
IAW  0239
IRA  0080 0139 0173 0185 0187 0226
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 2
Printed in France

### Page 10 (OCR)

DA300
SERVICE BULLETIN
OPERATOR  MSN
IRB  0299 0302
IRM  0055 0090 0160 0175 0204 0244
KZU  0041 0044 0101 0117
MIX  0125 0134 0157 0196 0203 0218
MNB  0019 0047 0123 0212 0277 0292 0304
MSR  0200 0255
NTR  0124 0155 0210 0227 0247 0261
OHY  0138 0192
RUN  0075 0105 0107 0121 0147 0154 0183
SOP  0126
TDX  0053 0100 0207 0211 0216 0271
TNO  0045 0074 0078
TSY  0129
(c>  Effectivity by MSN and Kit/Configuration
None
(3) SPARES
None
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 3
Printed in France

### Page 11 (OCR)

©A300
SERVICE BULLETIN
B. REASON
(1) History
An All Operator Telex (AOT) 57/86/01 has been issued to all A300
Operators requesting inspection of the aft hinge brackets of the outer
shroud box. This inspection revealed that approximately half of all the
brackets inspected were cracked or completely fractured.  Fracture of the
bracket would allow vertical movement of the inner shroud box structure
in the immediate area which could result in damage to the top skin of the
inboard flap. Additionally, the loads carried through the brackets will
be transferred to the remaining supports which may also crack and cause
extensive structural damage.
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 4
Printed in France

### Page 12 (OCR)

• A300
SERVICE BULLETIN
There is also some evidence of un-reported fractures of the forward hinge
bracket of the outer shroud box.
Modification No. 06661H1033 (Service Bulletin A300-57-0143) has been
introduced which replaces the aluminum alloy aft bracket with a steel
bracket.
(2)  Objective/Action
To do a mandatory detailed visual inspection of the LH and RH outer shroud
box hinge brackets to detect any cracks or the complete fracture of the
brackets.
(3)  Advantages
Accomplishment of this Service Bulletin will lead to the early detection
of the cracks in the shroud box hinge brackets and will prevent the
fracture of the brackets.
(4)  Operational/Maintenance Consequences
None
(5)  Accomplishment Timescale
This Service Bulletin has been classified Mandatory by the issue of an
Airworthiness Directive (AD) published by the European Aviation Safety
Agency (EASA). The AD must be used as the reference document for the
mandated accomplishment timescale.
A detailed visual inspection and repeat inspections are to be done on the
forward and aft hinge brackets of the outer shroud-box. For aircraft
already within the inspection program, the next inspection must be
completed within the next interval period. However, where the FH Limit
only has been exceeded the inspection may be extended to the previously
planned FC inspection.
The inspection thresholds and repeat inspection intervals are detailed in
Table 1.
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 5
Printed in France

### Page 13 (OCR)

A300
SERVICE BULLETIN
Table 1
REPEAT  REPEAT
THRESHOLD  INTERVAL (IF
MODIFICATION  INSPECTION  INSPECTION  INTERVAL  CRACK IS
AIRCRAFT  (IF CRACKS
STANDARD  METHOD  BEFORE  ARE NOT  FOUND IN ONE
EMBODIMENT  HALF
FOUND)
A300B2  Pre-Mod. 06661
Post Mod. 06661*
A300B4-100  Pre-Mod.  06661
Post Mod. 06661*
A300 B4-200  Pre-Mod. 06661
C4-200
F4-200
Post Mod. 06661*  N/A  N/A_  N/A  N/A  N/ A  N/A  N/A
NOTE: (*): If Modification 06661H1033 (Service Bulletin A300-57-0143) is embodied
then no further inspections are necessary.
NOTE: (**): If a crack is found in one half bracket, repeat intervals can only be
carried out for crack lengths less than 8mm.
For aircraft subject to short-range missions only, the inspections are identical to
those for normal operation.
For aircraft with cracks greater than 8mm, hinge bracket fractured or with cracks in
both half brackets replace the bracket before the next flight.
NOTE:  Each hinge bracket (forward and aft) is manufactured from two half
brackets joined at the vertical face of the flange which supports
its bearing assembly.
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 6
Printed in France

### Page 14 (OCR)

© A300
SERVICE BULLETIN
C. DESCRIPTION
To accomplish this Service Bulletin it is necessary to:
(1)  Get access to both the LH and RH outer shroud boxes, fwd and aft
hinge brackets.
(2)  Do a detailed visual inspection of the hinge brackets.
(3)  Repair by replacement, as necessary.
(4)  If a bracket is cracked, do additional visual inspections for
secondary damage of the support structure, attachment brackets and
the top skin of the inboard flap in the area of the inner and outer
shroud boxes.
(5) Close-up.
D. APPROVAL
The technical content of this document is approved under the authority
of Design Organization Approval No. EASA.21J.031.
E. MANPOWER
This Service Bulletin is written for an aircraft in a maintenance
status. The manhours/elapsed time estimates do not include the time to
prepare for the inspection, non-productive elapsed time or
administration.
Manhours (both wings)
Get access  2.0
Inspection  4.0
Close-up  2.0
TOTAL MANHOURS  8.0
ELAPSED TIME (HOURS)  4.0
F. MATERIAL - COST AND AVAILABILITY
If replacement brackets are required send a Spares Purchase Order,
quoting this Service Bulletin number, to:
AIRBUS
MATERIAL SUPPORT CENTER
P.0. Box 630262
22312 HAMBURG
GERMANY
G. TOOLING - PRICE AND AVAILABILITY
None
H. WEIGHT AND BALANCE
Not changed
DATE : Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. :  04 - Mar 30/11  PAGE : 7
Printed in France

### Page 15 (OCR)

© A300
SERVICE BULLETIN
I. REFERENCES
Aircraft Maintenance Manual (AMM)  : 06-21-57, 24-00-00, 27-51-65,
27-51-65,
Service Bulletin  : A300-57-0143
J. PUBLICATIONS AFFECTED
None
DATE : Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. :  04 - Mar 30/11  PAGE : 8
Printed in France

### Page 16 (OCR)

SERVICE BULLETIN  • A300
2. ACCOMPLISHMENT INSTRUCTIONS
A. GENERAL
WARNING :  MAKE SURE THAT YOU OBEY ALL THE WARNINGS AND ALL THE
CAUTIONS LISTED IN THE REFERENCED PROCEDURES.
WARNING :  MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL
SURFACES ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A
HYDRAULIC SYSTEM.
(1) Preparation
(a) Make sure that the aircraft is electrically grounded (Refer to
AMM: 24-00-00, P. Block 301).
(b) To get access to the outer shroud box fwd and aft hinge
brackets,  extend the flaps (Refer to AMM: 27-51-65, P. Block
401) and the inner airbrakes (Refer to AMM: 27-61-54, P. Block
401).
(c) Put warning notices in position in the flight compartment to
tell persons not to operate the flight controls.
(d) To get access to the inner shroud box, inner attachment
brackets, remove and retain the  access panels 577CT, 577DT(LH),
677CT and 677DT (RH) (Refer to AMM: 06-21-57, P. Block 1).
(e) Get access to the inner shroud-box fwd attachments through the
Main Landing Gear Bays (LH and RH).
(2) Standard Practices
None
B. INSPECTION
The procedures that follow are applicable to the (LH) and (RH) wings,
Refer to Figure 1 .
(1) Clean the inspection area with cleaning agent (Mat. No. 11-026) .
(2) Get access from the top surface of the wing through the gap between
the inner and outer shroud boxes. Move the seal between the shroud
boxes, as necessary, to visually inspect the top of the outer
shroud-box hinge brackets.
(3)  Do a detailed inspection of the outer shroud-box forward and aft
hinge bracket assemblies, as follows:
(a) Inspect the small radius between the top  flange and the
vertical flange, as shown in example 'A' and example  'B' of
Figure 1, for  signs of cracks on the hinge bracket.
(b)  Get access from the lower surface of the wing and with the use
of an inspection mirror, visually inspect both halves of the
hinge brackets for signs of cracks or fracture of the bracket.
NOTE 1 : Each hinge bracket (forward and aft) is manufactured
from two half brackets joined at the vertical face of
the flange which supports its bearing assembly.
DATE : Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. :  04 - Mar 30/11  PAGE : 9
Printed in France

### Page 17 (OCR)

A300
SERVICE BULLETIN
NOTE 2:  The cracks can start in either of the two half brackets and run
down the vertical web radium (example 'A' of Figure 1), or run
through the vertical flange under the bearing assembly
attachment nut (example 'B'  of Figure 1).
(4)  Use the results of the inspection to do one or more of the worksteps that
follow:
(a)  If cracks are not found on either the forward or aft hinge brackets,
do repeat inspections as detailed in Table 1 until Modification
06661H1033 (Service Bulletin A300-57-0143) is embodied.
(b)  If a crack is found in one half bracket, do repeat inspections as
detailed in Table 1 until a repair is done, as detailed in Para. C.
REPAIR. The repeat intervals can only be carried out for crack
Lengths less than 8mm.
(c)  If both half brackets are cracked or a hinge bracket has fractured,
then do a repair as detailed in Para. C. REPAIR.
(d)  If a crack is found in one half bracket or both half brackets, do a
visual inspection for secondary damage in the areas that follows:
The inner shroud-box forward attachments and the attachment
brackets at  the inboard end.
2  The inner and out shroud-box structure, adjacent to the
fractured bracket.
The top skin of the inboard flap.
NOTE :  If any damage is found contact AIRBUS for an
applicable repair procedure.
(5)  If Modification 06661H1033 (Service Bulletin A300-57-0143) has been
embodied after the fracture of the aft hinge bracket, then visually
inspect the forward hinge bracket for cracks immediately after the
embodiment of the modification.
C.  REPAIR
(1)  If a crack is found in one half bracket, less than 8mm, the bracket should
be:
replaced as soon as a replacement part is available, or
embody Modification No. 06661H1033 (Service Bulletin A300-57-0143).
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 10
Printed in France

### Page 18 (OCR)

A300
SERVICE BULLETIN
(2)  If both half brackets are cracked or the hinge bracket has fractured or
cracks are greater than 8mm in one half bracket:
replace the damaged hinge bracket before the next flight, or
embody Modification No. 06661H1033 (Service Bulletin A300-57-0143)
before the next flight.
D_  TEST
None
E.  CLOSE-UP
(1)  Make sure that the work areas are  clean and clear of tools and other items
of equipment.
(2)  Install the access panels 577CT, 577DT(LH), 677CT and 677DT(RH) (Refer to
AMM: 06-21-57, P. Block 1).
(3)  Retract the inner airbrakes (Refer to AMM: 27-61-54, P Block 401).
(4)  Retract the flaps (Refer to AMM: 27-51-65, P Block 401).
(5)  Send the results of all the inspections to AIRBUS.
(6)  AIRBUS requires the return of any failed brackets for investigation.
DOCUMENTATION
Write in the applicable aircraft records that you have done all the work given
in this Service Bulletin.
DATE: Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 11
Printed in France

### Page 19 (OCR)

© A300
SERVICE BULLETIN
INNER SHROUD BOX
OUTER SHROUD BOX
FLAP TRACK
/ BEAM No 2
INNER SHROUD BOX
RIB 9
FORWARD
OUTBOARD  FORWARD HINGE
BRACKET
OUTER SHROUD BOX
REAR HINGE BRACKET
JOINT LINE  USUAL STARTING POINT
OF CRACKS
CRACK IN VERTICAL
WEB RADIUS
CRACK IN VERTICAL FLANGE
UNDER BEARING ASSY. NUT
EXAMPLE 'A'
EXAMPLE 'B'
Inspection Areas
Figure 1 Sheet 1
DATE : Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 12
Printed in France

### Page 20 (OCR)

© A300
SERVICE BULLETIN
3. MATERIAL INFORMATION
A. LIST OF COMPONENTS
None
B. SPECIAL TOOLS
None
C. LIST OF MATERIAL - OPERATOR SUPPLIED
DESCRIPTION  REFERENCE TO CML  QTY PER A/C
Cleaning agent  (Mat. No. 11-026)  As Required
D. PARTS TO BE RE-IDENTIFIED BY OPERATOR
None
DATE : Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 13/14
Printed in France

### Page 21 (OCR)

© A300
SERVICE BULLETIN
ACCEPTANCE/REJECTION SHEET
AIRBUS
CUSTOMER SERVICES DIRECTORATE
1 Rond Point Maurice BELLONTE
31707 BLAGNAC CEDEX FRANCE
Tel: (33) 5 61-93-33-33
Telex: AIRBU 530526 F
TITLE : WINGS - INSPECTION OF OUTER SHROUD BOX HINGE BRACKETS
MODIFICATION No. :  NONE  ATA SYSTEM : 57
IS BEING HEREWITH SUBMITTED TO YOU FOR REVIEW
Please fill :  ... REJECTED
...WILL BE EMBODIED
... EFFECTIVITY
This SB can only be incorporated in your "customized"
documentation within the agreed time schedule in so far as this
sheet  returned to us  on  purchase date and signed by a duly
authorized  and empowered officer or  representative.
FROM :  Please return to :
AIRLINE :  AIRBUS
CUSTOMER SERVICES DIRECTORATE
1 Rond Point Maurice Bellonte
NAME :  31707 BLAGNAC CEDEX FRANCE
Attn : AI/SE-D32 Technical Data
DATE :  and Documentation Services
FAX : (+33) 5 61 93 28 06
7 DATE : Dec 17/86  SERVICE BULLETIN No. : A300-57-0142
REVISION No. : 04 Mar 30/11  PAGE : 1 of 1
Printed in France

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