# Airbus Service Bulletin A350-53-P037

Copy: No revision named ("SB A350-53-P037"), 37 pages: PDF https://openairdocs.org/files/sha256/9e/15/9e156f3d4a28523dacd2ea9c7d4b92ab0b3b5e3410aea702b2e150965b7e792c; text https://openairdocs.org/service-documents/airbus/a350-53-p037/file/9e156f3d4a28.md. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2019-0723, the docket of AD 2019-26-01. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Airbus](https://openairdocs.org/service-documents/airbus.md)
- Type: Service bulletin (Service Bulletin)
- Number: A350-53-P037
- Page: https://openairdocs.org/service-documents/airbus/a350-53-p037

## Text (37 pages)

Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2019-0723, the docket of AD 2019-26-01. Not covered by OpenAirDocs’ CC0 dedication. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 1
CONF ALL
AIRBUS S.A.S.
Customer Services
T echnical Data Support and Services
31703 Blagnac Cedex
FRANCE
 
The content of this document is the property of Airbus.
It is supplied in confidence and commercial security on its contents must be maintained.
It must not be used for any purpose other than that for which it is supplied, nor may information
contained in it be disclosed to unauthorized persons.
It must not be reproduced in whole or in part without permission in writing from the owners of the
copyright. Requests for reproduction of any data in this document and the media authorized for it must
be addressed to Airbus.
ATA SYSTEM: 53
TITLE: FUSELAGE - CONE/REAR FUSELAGE - APPLY NEW CORROSION
PROTECTION SCHEME IN THS UPPER AND LOWER ATTACHMENT
FITTING BEARING ASSY
MODIFICATION No.:
113501L83009

### Page 2

A350
SERVICE BULLETIN
SUMMARY
REV 00 Nov 12/18 A350-53-P037
Page 2
ATA SYSTEM: 53
TITLE: FUSELAGE - CONE/REAR FUSELAGE - APPLY NEW CORROSION
PROTECTION SCHEME IN THS UPPER AND LOWER ATTACHMENT
FITTING BEARING ASSY
SUMMARY
This summary is for information only and is not approved for modification of the aircraft.
A. MODIFICATIONS
MODIFICATION CLASSIFICATION
MAJOR None
MINOR 113501L83009
NOTE: As per EASA IR 21, a minor change is one that has no appreciable effect on the
mass, balance, structural strength, reliability, operational characteristics affecting
the airworthiness of the product. All other changes are major changes.
B. REASON
(1) History
When performing the first 18 months/6000 Flight Hours (FH) lubrication Trimmable
Horizontal Stabilizer (THS) upper and lower frame attachment bearings ( Ref. MP A350-
A-27-44-XX-01ZZZ-240Z-A) at FR102, some aircraft found evidence of Left Hand (LH)
side and Right Hand (RH) side attach corner fitting bearing Assembly (ASSY) rotation.
The rotation of the bearing ASSY caused the breaking of the sealant bead.
Due to the damaged sealant, water tightness cannot be guaranteed, hence there is a
risk of corrosion in the aluminium corner fitting.
Inspection Service Bulletin (ISB) Ref. SB A350-53-P032 was launched to carry out a
repetitive inspection in this area to detect any issue on the sealant or corrosion trace.
(2) Objective/Action
The objective of this Service Bulletin is to remove the existing sealant beads currently
applied to the bearing body and nut perimeter and to apply a new protection scheme
with corrosion preventive compound and grease.
(3) Advantages
The accomplishment of this Service Bulletin will improve the protection of the surface,
reducing possible corrosion issues on affected areas and the possibility of structural
damage issues.
Accomplishment of this Service Bulletin cancels the requirements of ISB Ref. SB
A350-53-P032.
(4) Operational/Maintenance Consequences
The Operational/Maintenance Consequences of this Service Bulletin are covered by
the update of the affected publications detailed in "PLANNING INFORMATION".
C. GENERAL EVALUATION
EVALUATION TABLE
COMPLIANCE RECOMMENDED COST SAVING NO

### Page 3

A350
SERVICE BULLETIN
SUMMARY
REV 00 Nov 12/18 A350-53-P037
Page 3
EVALUATION TABLE
A/C OPERATION
AFFECTED
NO VENDOR SB NO
CANCELS INSPECTION SB YES ETOPS AFFECTED NO
PAX COMFORT AFFECTED NO POTENTIAL AD NO
RELIABILITY AFFECTED NO STRUCTURAL LIFE EXTENSION NO
LIFE LIMIT NO LINE MAINTENANCE AFFECTED NO
VALIDATION ON AIRCRAFT YES BOOKLET AVAILABLE YES
NOTE: Service Bulletin recommended to be accomplished to prevent significant
operational disruptions.
NOTE: This Service Bulletin has been accomplished at approved draft status of the original
issue on aircraft with Manufacturer Serial Number (MSN) 0014 to validate its
content. This document has not been dispatched to the operators.
NOTE: A booklet including photographs taken during the validation of this Service Bulletin
is available on AirbusWorld - Maintenance and Engineering - AirN@v engineering (in
the concerned SB file).
D. MAINTENANCE CONFIGURATION
No specific aircraft maintenance configuration required.
E. MATERIAL PRICE INFORMATION
(1) Modification
(a) T ask set A350-A-53-XX-P037-01000-93AA-A Modification
MATERIAL PRICE INFORMATION TABLE
MATERIAL SET QTYPER A/C PRICE PER A/C MAIN PARTS
Aircraft standard tools See SB See Note Prot, platform
NOTE: Price information to be obtained from the given supplier.
F. APPLICABILITY
This Service Bulletin is applicable to this (these) operator(s):
AAR CAL CCA CHH CPA CRK CSC DAL DLH ETH FBU FIN FWI HVN IBE MAS MAU PAL QTR SIA
TAM THA
G. CONCURRENT REQUIREMENTS
Accomplishment of this Service Bulletin requires the prior or simultaneous accomplishment
of the following Service Bulletin(s).
Service Bulletin(s) Modification(s)
Ref. SB A350-53-P032  
NOTE: Service Bulletin No. Ref. SB A350-53-P032 (FUSELAGE - CONE/REAR FUSELAGE
- INSPECTION OF THS UPPER AND LOWER ATTACHMENT FITTING BEARING ASSY
ROTATION).
H. NATURE OF THE WORK

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A350
SERVICE BULLETIN
SUMMARY
REV 00 Nov 12/18 A350-53-P037
Page 4
(1) Modification
(a) T ask set A350-A-53-XX-P037-01000-93AA-A Modification
AIRCRAFT YES
EQUIPMENT NO
I. MANPOWER
(1) Modification
(a) T ask set A350-A-53-XX-P037-01000-93AA-A Modification
MANPOWER
TOTAL MAN-HOURS 34.00 h
ELAPSED TIME (HOURS) 18.00 h

### Page 5

A350
SERVICE BULLETIN
SUMMARY
Figure ICN-A350-A-53XXP037-A-FAPE3-04666-A-002-01 SHEET 1/1
REV 00 Nov 12/18 A350-53-P037General Overview
Page 5
J. GENERAL OVERVIEW
CONF ALL
B
FR102
FR93
A
B
A
Z311
Z312
LH
RH
GREASE IN THE UPPER CORNER FITTING BEARING ASSY
APPLICATION OF CORROSION PREVENTIVE COMPOUND AND
GREASE IN THE LOWER CORNER FITTING BEARING ASSY
APPLICATION OF CORROSION PREVENTIVE COMPOUND AND
ICN-A350-A-53XXP037-A-FAPE3-04666-A-002-01

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A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 6
ATA SYSTEM: 53
TITLE: FUSELAGE - CONE/REAR FUSELAGE - APPLY NEW CORROSION
PROTECTION SCHEME IN THS UPPER AND LOWER ATTACHMENT
FITTING BEARING ASSY
1. PLANNING INFORMATION
A. APPLICABILITY
NOTE: This modification is embodied before delivery on Standard 1 (ST1) aircraft with MSN
0207, 0211, 0214, 0216, 0237, 0243, 0245, 0249, 0250, 0255 and subsequent, on
ST3 aircraft with MSN 0161, 0215, 0225, 0229, 0233, 0241 and subsequent.
(1) Models
ON A/C 0088, 0102, 0110, 0118, 0125, 0141, 0169, 0188, 0206, 0225
350-1041
ON A/C 0005-0058, 0060-0064, 0066-0070, 0072-0087, 0089-0101, 0103-0107, 0109,
0111-0117, 0119-0124, 0126-0130, 0132-0138, 0140, 0142-0151, 0153-0155, 0157-0160,
0162-0165, 0167, 0168, 0170, 0172-0187, 0189-0193, 0195-0205, 0208-0210, 0212, 0213,
0217-0221, 0223, 0226-0228, 0230, 0231, 0235, 0236, 0239, 0240
350-941
CONF ALL
(2) Applicability by MSN
0005-0058 0060-0064 0066-0070 0072-0107 0109-0130 0132-0138 0140-0151
0153-0155 0157-0160 0162-0165 0167-0170 0172-0193 0195-0206 0208-0210 0212
0213 0217-0221 0223 0225-0228 0230 0231 0235 0236 0239 0240
(3) MSN by configuration
MSN CONFIGURATION
0005 0006 0007 0008 0009 0010 0011 0012 0013 0014 0015
0016 0017 0018 0019 0020 0021 0022 0023 0024 0025 0026
0027 0028 0029 0030 0031 0032 0033 0034 0035 0036 0037
0038 0039 0040 0041 0042 0043 0044 0045 0046 0047 0048
0049 0050 0051 0052 0053 0054 0055 0056 0057 0058 0060
0061 0062 0063 0064 0066 0067 0068 0069 0070 0072 0073
0074 0075 0076 0077 0078 0079 0080 0081 0082 0083 0084
0085 0086 0087 0088 0089 0090 0091 0092 0093 0094 0095
0096 0097 0098 0099 0100 0101 0102 0103 0104 0105 0106
0107 0109 0110 0111 0112 0113 0114 0115 0116 0117 0118
0119 0120 0121 0122 0123 0124 0125 0126 0127 0128 0129
0130 0132 0133 0134 0135 0136 0137 0138 0140 0141 0142
0143 0144 0145 0146 0147 0148 0149 0150 0151 0153 0154
0155 0157 0158 0159 0160 0162 0163 0164 0165 0167 0168
0169 0170 0172 0173 0174 0175 0176 0177 0178 0179 0180
0181 0182 0183 0184 0185 0186 0187 0188 0189 0190 0191
0192 0193 0195 0196 0197 0198 0199 0200 0201 0202 0203
0204 0205 0206 0208 0209 0210 0212 0213 0217 0218 0219
0220 0221 0223 0225 0226 0227 0228 0230 0231 0235 0236
0239 0240
001
(4) Configuration definition

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A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 7
Configuration 001
CONF 001 is applicable for all the aircraft affected by this Service Bulletin as a
standard configuration.
 
B. CONCURRENT REQUIREMENTS
Accomplishment of this Service Bulletin requires the prior or simultaneous accomplishment
of the following Service Bulletin(s).
Service Bulletin(s) Modification(s)
Ref. SB A350-53-P032  
NOTE: Service Bulletin No. Ref. SB A350-53-P032 (FUSELAGE - CONE/REAR FUSELAGE
- INSPECTION OF THS UPPER AND LOWER ATTACHMENT FITTING BEARING ASSY
ROTATION).
C. REASON
(1) History
When performing the first 18 months/6000 Flight Hours (FH) lubrication Trimmable
Horizontal Stabilizer (THS) upper and lower frame attachment bearings ( Ref. MP A350-
A-27-44-XX-01ZZZ-240Z-A) at FR102, some aircraft found evidence of Left Hand (LH)
side and Right Hand (RH) side attach corner fitting bearing Assembly (ASSY) rotation.
The rotation of the bearing ASSY caused the breaking of the sealant bead.
Due to the damaged sealant, water tightness cannot be guaranteed, hence there is a
risk of corrosion in the aluminium corner fitting.
Inspection Service Bulletin (ISB) Ref. SB A350-53-P032 was launched to carry out a
repetitive inspection in this area to detect any issue on the sealant or corrosion trace.
(2) Objective/Action
The objective of this Service Bulletin is to remove the existing sealant beads currently
applied to the bearing body and nut perimeter and to apply a new protection scheme
with corrosion preventive compound and grease.
(3) Advantages
The accomplishment of this Service Bulletin will improve the protection of the surface,
reducing possible corrosion issues on affected areas and the possibility of structural
damage issues.
Accomplishment of this Service Bulletin cancels the requirements of ISB Ref. SB
A350-53-P032.
(4) Operational/Maintenance Consequences
The Operational/Maintenance Consequences of this Service Bulletin are covered by
the update of the affected publications detailed in "PLANNING INFORMATION".
D. DESCRIPTION
T o accomplish this Service Bulletin it is necessary to:
(1) Modification
(a) T ask set A350-A-53-XX-P037-01000-93AA-A Modification
1 Removal of Sealant and Application of Corrosion Preventive Compound and
Grease in the Upper Corner Fitting Bearing ASSY at FR102, LH side

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A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 8
2 Removal of Sealant and Application of Corrosion Preventive Compound and
Grease in the Upper Corner Fitting Bearing ASSY at FR102, RH side
3 Removal of Sealant and Application of Corrosion Preventive Compound and
Grease in the Lower Corner Fitting Bearing ASSY at FR102, LH side
4 Removal of Sealant and Application of Corrosion Preventive Compound and
Grease in the Lower Corner Fitting Bearing ASSY at FR102, RH side
E. COMPLIANCE
(1) Classification
RECOMMENDED: Service Bulletin recommended to be accomplished to prevent
significant operational disruptions.
(2) Accomplishment Timescale
Accomplishment of this Service Bulletin is recommended at the earliest opportunity
where manpower and facilities are available.
F. APPROVAL
The technical content of this document is approved under the authority of Design
Organisation Approval No. EASA.21J.031.
If an aircraft listed in the applicability has a modification or repair embodied that is not
of AIRBUS origin, and which affects the content of this Service Bulletin, the operator
is responsible for obtaining approval by its airworthiness authority for any adaptation
necessary before incorporation of the Service Bulletin.
G. MANPOWER
The manpower estimates given in this Service Bulletin are based on the direct labor cost to
do the work. These estimates assume that the work will be done by experienced personnel,
and may need to be revised upwards to suit operator’s circumstances. The estimates do not
include the time to prepare, plan or inspect the work. Manufacture and procurement of parts
and tools, drying times for paints, sealants, etc., and general administration work are also
not included.
(1) Modification
(a) T ask set A350-A-53-XX-P037-01000-93AA-A Modification
PREPARATION
Job Set-up 1.00 h
PROCEDURE
Removal of Sealant and Application of Corrosion Preventive
Compound and Grease in the Upper Corner Fitting Bearing
ASSY at FR102, LH side
8.00 h
Removal of Sealant and Application of Corrosion Preventive
Compound and Grease in the Upper Corner Fitting Bearing
ASSY at FR102, RH side
8.00 h
Removal of Sealant and Application of Corrosion Preventive
Compound and Grease in the Lower Corner Fitting Bearing
ASSY at FR102, LH side
8.00 h
Removal of Sealant and Application of Corrosion Preventive
Compound and Grease in the Lower Corner Fitting Bearing
ASSY at FR102, RH side
8.00 h
PREPARATION FOR TEST
None

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A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 9
TEST
None
CLOSE-UP
Close-up 1.00 h
TOTAL MAN-HOURS 34.00 h
ELAPSED TIME (HOURS) 18.00 h
NOTE: For an explanation of the man-hours and elapsed time, refer to the
Gantt Chart given in Appendix 01 - Manpower Gantt Chart.
H. WEIGHT AND BALANCE
Not changed
I. ELECTRICAL LOAD DATA
Not changed
J. REFERENCES
CONCURRENT SERVICE BULLETIN (SB)
A350-53-P032
(1) Modification
(a) T ask set A350-A-53-XX-P037-01000-93AA-A Modification
AIRCRAFT STRUCTURAL REPAIR (ASR)
A350-A-51-22-XX-01ZZZ-667Z-A A350-A-51-23-11-01ZZZ-667Z-A
A350-A-51-75-12-00ZZZ-660Z-A
ELECTRICAL STANDARD PRACTICES (ESP)
A350-A-20-55-XX-01ZZZ-042Z-A
INTRODUCTION (INTRO)
A350-A-00-61-04-11ZZZ-018Z-D
MAINTENANCE PROCEDURE (MP)
A350-A-24-41-XX-00ZZZ-170Z-A A350-A-27-44-XX-01ZZZ-240Z-A
SERVICE BULLETIN (SB)
A350-53-P032
SYSTEM DESCRIPTION (SD)
A350-A-06-2X-XX-01ZZZ-04CZ-A A350-A-06-3X-XX-01ZZZ-04CZ-A
TECHNICAL FOLLOW UP (TFU)
53.56.00.004
K. PUBLICATION AFFECTED
None
L. INDUSTRY SUPPORT INFORMATION

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A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 10
AIRBUS will credit the man hours indicated in this Service Bulletin at the agreed in-house
warranty labor rate for claims received no later than 90 days after completion of the last
affected aircraft of your fleet, for the accomplishment of this Service Bulletin within 72
months after the initial issue date of the Service Bulletin No. Ref. SB A350-53-P032.
This Service Bulletin is the subject of an AIRBUS monitored retrofit campaign.
For the organization of this retrofit, you are kindly requested to contact AIRBUS retrofit
management department: monitored.retrofit@airbus.com.

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A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 11
2. MATERIAL INFORMATION
A. MATERIAL APPLICABILITY
Material for task set A350-A-53-XX-P037-01000-93AA-A Modification
MATERIAL QTY SEE NOTES
Aircraft standard tools See SB
Referenced tools See SB
Consumables See SB
B. TOOLING
Aircraft standard tools for task set A350-A-53-XX-P037-01000-93AA-A
Modification
Procurement address
D4296
AIRBUS Material, Logistics and Suppliers
IFD - In Flight Desk
Weg beim Jaeger 150
D-22335 HAMBURG
GERMANY
Fax: +49 40 50 76 4012
E-mail: ifd.spares@airbus.com
Internet: http://spares.airbus.com
D4296
AIRBUS Material, Logistics and Suppliers
Weg beim Jaeger 150
D-22335 HAMBURG
GERMANY
Fax: +49 40 50 76 3225
E-mail: T ool.LEASE@airbus.com
Internet: http://spares.airbus.com
NOTE(S)
Customers with aircraft shown in the applicability of this Service Bulletin should send
a purchase order to AIRBUS at the address given above and quote the number of this
Service Bulletin.
AIRBUS will provide at no charge the loan of this specific tool for a period equivalent
to the Service Bulletin elapsed time (8 hours a day) per aircraft application plus ten
days for transportation. After relevant period, standard loan charges apply.
Operators interested in the lease of standard tools should contact AIRBUS at the
address given above.
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
98V53509013000
(D4296) (D4296) 1 PLATFORM
98V55109012000
(D4296) (D4296) 1 PROT
Referenced tools for task set A350-A-53-XX-P037-01000-93AA-A Modification
NOTE: T o accomplish this Service Bulletin it is necessary to use the tools listed in the
subsequent referenced tasks:
Ref. MP A350-A-27-44-XX-01ZZZ-240Z-A
C. CONSUMABLES
Consumables for task set A350-A-53-XX-P037-01000-93AA-A Modification

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A350
SERVICE BULLETIN
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Page 12
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
03GBC1
Synthetic Oil base Grease
- General Purpose Lithium
Thickened Low T emp
04DAB2
Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
04JME4 T op Coat Polyurethane - -Grey InternalStructure
08BAA9 Non Aqueous Cleaner -General
10ABC1
Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
12ABC1
Corrosion Preventive
Compound - Water
Displacing Soft Film
14SBA1 T extile - Lint free Cotton
D. LIST OF NEW PARTS
No parts
E. LIST OF EXISTING PARTS
No parts

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A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 13
3. ACCOMPLISHMENT INSTRUCTIONS
Task set A350-A-53-XX-P037-01000-93AA-A
Modification
WARNING: MAKE SURE THAT YOU OBEY ALL THE WARNINGS AND ALL THE CAUTIONS
INCLUDED IN THE REFERENCED PROCEDURES.
CAUTION: ALWAYS OBEY THE PRECAUTIONS THAT FOLLOW TO KEEP ELECTRICAL
WIRING IN A SATISFACTORY CONDITION (ELECTRICALLY AND MECHANICALLY
SERVICEABLE). WHEN YOU DO MAINTENANCE WORK, REPAIRS OR
MODIFICATIONS, ALWAYS KEEP ELECTRICAL WIRING, COMPONENTS AND
THE WORK AREA AS CLEAN AS POSSIBLE. TO DO THIS:
- PUT PROTECTION, SUCH AS PLASTIC SHEETING, CLOTHS, ETC., AS
NECESSARY ON WIRING AND COMPONENTS.
- REGULARLY REMOVE ALL SHAVINGS, UNWANTED MATERIAL AND
OTHER CONTAMINATION.
THESE PRECAUTIONS WILL DECREASE THE RISK OF CONTAMINATION AND
DAMAGE TO THE ELECTRICAL WIRING INSTALLATION.
IF THERE IS CONTAMINATION, REFER TO Ref. ESP A350-A-20-55-
XX-01ZZZ-042Z-A.
NOTE: The accomplishment instructions of this Service Bulletin include procedures given in
other documents or in other sections of the Service Bulletin. When the words “refer to”
are used and the operator has a procedure accepted by the local authority he belongs to,
the accepted alternative procedure can be used. When the words “in accordance with”
are used then the given procedure must be followed.
NOTE: The access and close-up instructions, not comprising return to service tests, in this
Service Bulletin do not constitute or affect the technical intent of the Service Bulletin.
Operators can therefore, as deemed necessary, omit or add access and/or close-up steps
to add flexibility to their maintenance operations as long as the technical intent of the
Service Bulletin is met within the set parameters.
NOTE: Manual titles given in the accomplishment instructions are referred to by acronyms. Refer
to paragraph 1.J., References, for the definition of acronyms.
NOTE: This Service Bulletin contains the instructions for the on-aircraft maintenance necessary
to ensure the continued airworthiness of the aircraft.
For any deviations to the instructions, including RC paragraph contained herein, contact
AIRBUS for further instructions and approval.
A. TASK SET ASSOCIATED INFORMATION
Task Manpower
TOTAL MAN-HOURS 34.00 h
ELAPSED TIME (HOURS) 18.00 h
B. PREPARATION
(1) Task A350-A-53-XX-P037-01001-540A-A - Job Set-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 1.00 h
Minimum Number of person 1
Elapsed Time 1.00 h

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A350
SERVICE BULLETIN
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Page 14
Material necessary to do the job
Aircraft standard tools
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
98V53509013000 1 PLATFORM
98V55109012000 1 PROT
Referenced Information
Manuals/Drawings References/Sheets
INTRO A350-A-00-61-04-11ZZZ-018Z-D
MP A350-A-24-41-XX-00ZZZ-170Z-AA350-A-27-44-XX-01ZZZ-240Z-A
Procedure
NOTE: For the basic Aircraft configuration, refer to Ref. INTRO A350-
A-00-61-04-11ZZZ-018Z-D "Maintenance Procedure - Introduction".
(a) Make sure that the aircraft is electrically grounded, refer to Ref. MP A350-
A-24-41-XX-00ZZZ-170Z-A.
(b) Do the Job Set-up procedure as specified in the lubrication of the THS hinge line
bearings and the upper and lower frame attachment-bearings, refer to Ref. MP
A350-A-27-44-XX-01ZZZ-240Z-A.
(c) Put an access platform in position below access doors 311AB and 311BB.
(d) Open the access doors 311AB and 311BB.
(e) Install:
1 PROT FLOOR PANEL-HTP 98V55109012000  
and
1 PLATFORM FR102 - S19 98V53509013000  
C. PROCEDURE
(1) Task A350-A-53-XX-P037-01001-250A-A - Removal of Sealant and Application
of Corrosion Preventive Compound and Grease in the Upper Corner Fitting
Bearing ASSY at FR102, LH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
310 Work location Frame 102
Manpower/Resources/Skills
Man-hours 8.00 h
Minimum Number of person 1
Elapsed Time 8.00 h

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A350
SERVICE BULLETIN
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Page 15
Material necessary to do the job
Consumables
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
03GBC1
Synthetic Oil base Grease
- General Purpose Lithium
Thickened Low T emp
04DAB2
Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
08BAA9 Non Aqueous Cleaner -General
10ABC1
Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
12ABC1
Corrosion Preventive
Compound - Water
Displacing Soft Film
14SBA1 T extile - Lint free Cotton
Referenced Information
Manuals/Drawings References/Sheets
ASR
A350-A-51-22-XX-01ZZZ-667Z-A
A350-A-51-23-11-01ZZZ-667Z-A
A350-A-51-75-12-00ZZZ-660Z-A
SD A350-A-06-2X-XX-01ZZZ-04CZ-AA350-A-06-3X-XX-01ZZZ-04CZ-A
Procedure
(a) Standard Practices:
1 For the specification of Material application codes given in this Service
Bulletin, refer to the Consumable Materials List (CML).
2 For the Zone identification, refer to Ref. SD A350-A-06-3X-XX-01ZZZ-04CZ-
A.
3 For the Frame (FR) identification, refer to Ref. SD A350-A-06-2X-
XX-01ZZZ-04CZ-A.
4 Apply corrosion protection in accordance with Ref. ASR A350-A-51-22-
XX-01ZZZ-667Z-A.
5 Repair the paint coating in accordance with Ref. ASR A350-
A-51-75-12-00ZZZ-660Z-A.
(b) Remove the sealant beads in the contour of the bearing to corner fitting ASSY
as shown on section view A-A of Ref. Fig. Removal of Sealant and Application of
Corrosion Preventive Compound and Grease in the Upper Corner Fitting Bearing
ASSY .
NOTE: Use a plain plastic spatula to remove the sealant.
NOTE: Make sure that all the sealant is removed in order to allow the tabs to be
visible, avoiding any possible damage to the washer tabs.

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A350
SERVICE BULLETIN
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Page 16
NOTE: It is not necessary to remove the sealant existing on the mating
surfaces between nut and washer.
(c) Clean the work area with:
  T extile - Lint free Cotton14SBA1  
and
  Non Aqueous Cleaner -
General
08BAA9  
(d) If paint is damaged during the sealant removal, apply the paint with,
refer to Ref. ASR A350-A-51-23-11-01ZZZ-667Z-A and Ref. ASR A350-
A-51-75-12-00ZZZ-660Z-A.
  Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
10ABC1  
and
  Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
04DAB2  
(e) Apply corrosion prevention compound between the bearing and fitting interfaces
as shown on section view B-B of Ref. Fig. Removal of Sealant and Application of
Corrosion Preventive Compound and Grease in the Upper Corner Fitting Bearing
ASSY:
  Corrosion Preventive
Compound - Water
Displacing Soft Film
12ABC1  
(f) Allow 30 minutes to dry the corrosion preventive compound - water repellent
fluid.
(g) Apply synthetic oil base grease around the bearing contour as shown on section
view B-B of Ref. Fig. Removal of Sealant and Application of Corrosion Preventive
Compound and Grease in the Upper Corner Fitting Bearing ASSY:
  Synthetic Oil base
Grease - General
Purpose Lithium
Thickened Low T emp
03GBC1

### Page 17

A350
SERVICE BULLETIN
Figure ICN-A350-A-53XXP037-A-FAPE3-0466A-A-001-01 SHEET 1/2
REV 00 Nov 12/18 A350-53-P037Removal of Sealant and Application of
Corrosion Preventive Compound and Grease
in the Upper Corner Fitting Bearing ASSY Page 17
CONF ALL
C
C
B
B
FR102
FR93
A
A
Z311
Z312
LH
RH
ICN-A350-A-53XXP037-A-FAPE3-0466A-A-001-01

### Page 18

A350
SERVICE BULLETIN
Figure ICN-A350-A-53XXP037-A-FAPE3-0466B-A-003-01 SHEET 2/2
REV 00 Nov 12/18 A350-53-P037Removal of Sealant and Application of Corrosion Preventive Compound and Grease in the Upper Corner Fitting Bearing ASSY
Page 18
CONF ALL
C
NUT
LOCK
WASHER
A
A
CORNER
FITTING
BEARING
ASSY
BUSHINGLH SHOWNRH SYMMETRICAL
PAD PLATE
CORNER
FITTING
TYPICAL
A A
TYPICAL
B
B
B B
01
01
01
02
02
02
0203
03
03
REMOVE THE SEALANT BEADS.01
APPLY CORROSION PREVENTIVE COMPOUND - WATER REPELLANT FLUID MATERIAL No 12ABC1.02
AFTER 30 MINUTES OF CORROSION PREVENTIVE COMPOUND - WATER REPELLANT FLUID APPLICATION, APPLY GREASE MATERIAL No 03GBC1.03
NOTE:
BEFORE AFTER
01
NUT
CORNER
FITTING
BEARING
ASSY
BUSHING
PAD PLATE
CORNER
FITTING
LOCK
WASHER
03
ICN-A350-A-53XXP037-A-FAPE3-0466B-A-003-01

### Page 19

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 19
(2) Task A350-A-53-XX-P037-02001-250A-A - Removal of Sealant and Application
of Corrosion Preventive Compound and Grease in the Upper Corner Fitting
Bearing ASSY at FR102, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
310 Work location Frame 102
Manpower/Resources/Skills
Man-hours 8.00 h
Minimum Number of person 1
Elapsed Time 8.00 h
Material necessary to do the job
Consumables
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
03GBC1
Synthetic Oil base Grease
- General Purpose Lithium
Thickened Low T emp
04DAB2
Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
08BAA9 Non Aqueous Cleaner -General
10ABC1
Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
12ABC1
Corrosion Preventive
Compound - Water
Displacing Soft Film
14SBA1 T extile - Lint free Cotton
Referenced Information
Manuals/Drawings References/Sheets
ASR
A350-A-51-22-XX-01ZZZ-667Z-A
A350-A-51-23-11-01ZZZ-667Z-A
A350-A-51-75-12-00ZZZ-660Z-A
SD A350-A-06-2X-XX-01ZZZ-04CZ-AA350-A-06-3X-XX-01ZZZ-04CZ-A
Procedure
(a) Standard Practices:
1 For the specification of Material application codes given in this Service
Bulletin, refer to the Consumable Materials List (CML).
2 For the Zone identification, refer to Ref. SD A350-A-06-3X-XX-01ZZZ-04CZ-
A.
3 For the Frame (FR) identification, refer to Ref. SD A350-A-06-2X-
XX-01ZZZ-04CZ-A.

### Page 20

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 20
4 Apply corrosion protection in accordance with Ref. ASR A350-A-51-22-
XX-01ZZZ-667Z-A.
5 Repair the paint coating in accordance with Ref. ASR A350-
A-51-75-12-00ZZZ-660Z-A.
(b) Remove the sealant beads in the contour of the bearing to corner fitting ASSY
as shown on section view A-A of Ref. Fig. Removal of Sealant and Application of
Corrosion Preventive Compound and Grease in the Upper Corner Fitting Bearing
ASSY .
NOTE: Use a plain plastic spatula to remove the sealant.
NOTE: Make sure that all the sealant is removed in order to allow the tabs to be
visible, avoiding any possible damage to the washer tabs.
NOTE: It is not necessary to remove the sealant existing on the mating
surfaces between nut and washer.
(c) Clean the work area with:
  T extile - Lint free Cotton14SBA1  
and
  Non Aqueous Cleaner -
General
08BAA9  
(d) If paint is damaged during the sealant removal, apply the paint with,
refer to Ref. ASR A350-A-51-23-11-01ZZZ-667Z-A and Ref. ASR A350-
A-51-75-12-00ZZZ-660Z-A.
  Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
10ABC1  
and
  Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
04DAB2  
(e) Apply corrosion prevention compound between the bearing and fitting interfaces
as shown on section view B-B of Ref. Fig. Removal of Sealant and Application of
Corrosion Preventive Compound and Grease in the Upper Corner Fitting Bearing
ASSY:
  Corrosion Preventive
Compound - Water
Displacing Soft Film
12ABC1  
(f) Allow 30 minutes to dry the corrosion preventive compound - water repellent
fluid.
(g) Apply synthetic oil base grease around the bearing contour as shown on section
view B-B of Ref. Fig. Removal of Sealant and Application of Corrosion Preventive
Compound and Grease in the Upper Corner Fitting Bearing ASSY:
  Synthetic Oil base
Grease - General
Purpose Lithium
Thickened Low T emp
03GBC1

### Page 21

A350
SERVICE BULLETIN
Figure ICN-A350-A-53XXP037-A-FAPE3-0466A-A-001-01 SHEET 1/2
REV 00 Nov 12/18 A350-53-P037Removal of Sealant and Application of
Corrosion Preventive Compound and Grease
in the Upper Corner Fitting Bearing ASSY Page 21
CONF ALL
C
C
B
B
FR102
FR93
A
A
Z311
Z312
LH
RH
ICN-A350-A-53XXP037-A-FAPE3-0466A-A-001-01

### Page 22

A350
SERVICE BULLETIN
Figure ICN-A350-A-53XXP037-A-FAPE3-0466B-A-003-01 SHEET 2/2
REV 00 Nov 12/18 A350-53-P037Removal of Sealant and Application of Corrosion Preventive Compound and Grease in the Upper Corner Fitting Bearing ASSY
Page 22
CONF ALL
C
NUT
LOCK
WASHER
A
A
CORNER
FITTING
BEARING
ASSY
BUSHINGLH SHOWNRH SYMMETRICAL
PAD PLATE
CORNER
FITTING
TYPICAL
A A
TYPICAL
B
B
B B
01
01
01
02
02
02
0203
03
03
REMOVE THE SEALANT BEADS.01
APPLY CORROSION PREVENTIVE COMPOUND - WATER REPELLANT FLUID MATERIAL No 12ABC1.02
AFTER 30 MINUTES OF CORROSION PREVENTIVE COMPOUND - WATER REPELLANT FLUID APPLICATION, APPLY GREASE MATERIAL No 03GBC1.03
NOTE:
BEFORE AFTER
01
NUT
CORNER
FITTING
BEARING
ASSY
BUSHING
PAD PLATE
CORNER
FITTING
LOCK
WASHER
03
ICN-A350-A-53XXP037-A-FAPE3-0466B-A-003-01

### Page 23

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 23
(3) Task A350-A-53-XX-P037-03001-250A-A - Removal of Sealant and Application
of Corrosion Preventive Compound and Grease in the Lower Corner Fitting
Bearing ASSY at FR102, LH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
310 Work location Frame 102
Manpower/Resources/Skills
Man-hours 8.00 h
Minimum Number of person 1
Elapsed Time 8.00 h
Material necessary to do the job
Consumables
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
03GBC1
Synthetic Oil base Grease
- General Purpose Lithium
Thickened Low T emp
04DAB2
Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
04JME4 T op Coat Polyurethane - -Grey InternalStructure
08BAA9 Non Aqueous Cleaner -General
10ABC1
Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
12ABC1
Corrosion Preventive
Compound - Water
Displacing Soft Film
14SBA1 T extile - Lint free Cotton
Referenced Information
Manuals/Drawings References/Sheets
ASR
A350-A-51-22-XX-01ZZZ-667Z-A
A350-A-51-23-11-01ZZZ-667Z-A
A350-A-51-75-12-00ZZZ-660Z-A
SD A350-A-06-2X-XX-01ZZZ-04CZ-AA350-A-06-3X-XX-01ZZZ-04CZ-A
Procedure
(a) Standard Practices:
1 For the specification of Material application codes given in this Service
Bulletin, refer to the Consumable Materials List (CML).
2 For the Zone identification, refer to Ref. SD A350-A-06-3X-XX-01ZZZ-04CZ-
A.

### Page 24

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 24
3 For the Frame (FR) identification, refer to Ref. SD A350-A-06-2X-
XX-01ZZZ-04CZ-A.
4 Apply corrosion protection in accordance with Ref. ASR A350-A-51-22-
XX-01ZZZ-667Z-A.
5 Repair the paint coating in accordance with Ref. ASR A350-
A-51-75-12-00ZZZ-660Z-A.
(b) Remove the coating - flexible structure in the contour of the bearing to corner
fitting ASSY as shown on section view A-A of Ref. Fig. Removal of Sealant and
Application of Corrosion Preventive Compound and Grease in the Lower Corner
Fitting Bearing ASSY .
(c) Remove the sealant beads in the contour of the bearing to corner fitting ASSY
as shown on section view A-A of Ref. Fig. Removal of Sealant and Application of
Corrosion Preventive Compound and Grease in the Lower Corner Fitting Bearing
ASSY .
NOTE: Use a plain plastic spatula to remove the sealant.
NOTE: Make sure that all the sealant is removed in order to allow the tabs to be
visible, avoiding any possible damage to the washer tabs.
NOTE: It is not necessary to remove the sealant existing on the mating
surfaces between nut and washer.
(d) Clean the work area with:
  T extile - Lint free Cotton14SBA1  
and
  Non Aqueous Cleaner -
General
08BAA9  
(e) If paint is damaged during the sealant removal, apply the paint with,
refer to Ref. ASR A350-A-51-23-11-01ZZZ-667Z-A and Ref. ASR A350-
A-51-75-12-00ZZZ-660Z-A.
  Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
10ABC1  
and
  Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
04DAB2  
and
  T op Coat Polyurethane -
- Grey InternalStructure
04JME4  
(f) Apply corrosion prevention compound between the bearing and fitting interfaces
as shown on section view B-B of Ref. Fig. Removal of Sealant and Application of
Corrosion Preventive Compound and Grease in the Lower Corner Fitting Bearing
ASSY:
  Corrosion Preventive
Compound - Water
Displacing Soft Film
12ABC1

### Page 25

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 25
(g) Allow 30 minutes to dry the corrosion preventive compound - water repellent
fluid.
(h) Apply synthetic oil base grease around the bearing contour as shown on section
view B-B of Ref. Fig. Removal of Sealant and Application of Corrosion Preventive
Compound and Grease in the Lower Corner Fitting Bearing ASSY:
  Synthetic Oil base
Grease - General
Purpose Lithium
Thickened Low T emp
03GBC1

### Page 26

A350
SERVICE BULLETIN
Figure ICN-A350-A-53XXP037-A-FAPE3-04667-A-001-01 SHEET 1/2
REV 00 Nov 12/18 A350-53-P037Removal of Sealant and Application of
Corrosion Preventive Compound and Grease
in the Lower Corner Fitting Bearing ASSY Page 26
CONF ALL
C
C
B
B
FR102
FR93
A
A
Z311
Z312
LH
RH
ICN-A350-A-53XXP037-A-FAPE3-04667-A-001-01

### Page 27

A350
SERVICE BULLETIN
Figure ICN-A350-A-53XXP037-A-FAPE3-04668-A-003-01 SHEET 2/2
REV 00 Nov 12/18 A350-53-P037Removal of Sealant and Application of Corrosion Preventive Compound and Grease in the Lower Corner Fitting Bearing ASSY
Page 27
CONF ALL
C
LH SHOWN
RH SYMMETRICAL
A
A
TYPICAL
A A
TYPICAL
B B
REMOVE THE COATING - FLEXIBLE STRUCTURE.01
APPLY CORROSION PREVENTIVE COMPOUND - WATER REPELLANT FLUID MATERIAL No 12ABC1.
02
AFTER 30 MINUTES OF CORROSION PREVENTIVE COMPOUND - WATER REPELLANT FLUID APPLICATION, APPLY GREASE MATERIAL No. 03GBC1.
03
NOTE:
BEFORE AFTER
NUT
LOCK
WASHER
CORNER
FITTING
BEARING
ASSY
BUSHING
PAD PLATE
CORNER
FITTING
01
01
01
01
02
02
02
02
04
03
03
03
03
04
04
04
04
REMOVE THE SEALANT BEADS.
B
B
NUT
LOCK
WASHER
CORNER
FITTING
BEARING
ASSY
BUSHING
PAD PLATE
CORNER
FITTING
ICN-A350-A-53XXP037-A-FAPE3-04668-A-003-01

### Page 28

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 28
(4) Task A350-A-53-XX-P037-04001-250A-A - Removal of Sealant and Application
of Corrosion Preventive Compound and Grease in the Lower Corner Fitting
Bearing ASSY at FR102, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
310 Work location Frame 102
Manpower/Resources/Skills
Man-hours 8.00 h
Minimum Number of person 1
Elapsed Time 8.00 h
Material necessary to do the job
Consumables
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
03GBC1
Synthetic Oil base Grease
- General Purpose Lithium
Thickened Low T emp
04DAB2
Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
04JME4 T op Coat Polyurethane - -Grey InternalStructure
08BAA9 Non Aqueous Cleaner -General
10ABC1
Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
12ABC1
Corrosion Preventive
Compound - Water
Displacing Soft Film
14SBA1 T extile - Lint free Cotton
Referenced Information
Manuals/Drawings References/Sheets
ASR
A350-A-51-22-XX-01ZZZ-667Z-A
A350-A-51-23-11-01ZZZ-667Z-A
A350-A-51-75-12-00ZZZ-660Z-A
SD A350-A-06-2X-XX-01ZZZ-04CZ-AA350-A-06-3X-XX-01ZZZ-04CZ-A
Procedure
(a) Standard Practices:
1 For the specification of Material application codes given in this Service
Bulletin, refer to the Consumable Materials List (CML).
2 For the Zone identification, refer to Ref. SD A350-A-06-3X-XX-01ZZZ-04CZ-
A.

### Page 29

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 29
3 For the Frame (FR) identification, refer to Ref. SD A350-A-06-2X-
XX-01ZZZ-04CZ-A.
4 Apply corrosion protection in accordance with Ref. ASR A350-A-51-22-
XX-01ZZZ-667Z-A.
5 Repair the paint coating in accordance with Ref. ASR A350-
A-51-75-12-00ZZZ-660Z-A.
(b) Remove the coating - flexible structure in the contour of the bearing to corner
fitting ASSY as shown on section view A-A of Ref. Fig. Removal of Sealant and
Application of Corrosion Preventive Compound and Grease in the Lower Corner
Fitting Bearing ASSY .
(c) Remove the sealant beads in the contour of the bearing to corner fitting ASSY
as shown on section view A-A of Ref. Fig. Removal of Sealant and Application of
Corrosion Preventive Compound and Grease in the Lower Corner Fitting Bearing
ASSY .
NOTE: Use a plain plastic spatula to remove the sealant.
NOTE: Make sure that all the sealant is removed in order to allow the tabs to be
visible, avoiding any possible damage to the washer tabs.
NOTE: It is not necessary to remove the sealant existing on the mating
surfaces between nut and washer.
(d) Clean the work area with:
  T extile - Lint free Cotton14SBA1  
and
  Non Aqueous Cleaner -
General
08BAA9  
(e) If paint is damaged during the sealant removal, apply the paint with,
refer to Ref. ASR A350-A-51-23-11-01ZZZ-667Z-A and Ref. ASR A350-
A-51-75-12-00ZZZ-660Z-A.
  Surface Pretreatment
- Light Alloys Chemical
Conversion Yellow
10ABC1  
and
  Primer Epoxy Paint -
- Corrosion Inhibiting
Structure
04DAB2  
and
  T op Coat Polyurethane -
- Grey InternalStructure
04JME4  
(f) Apply corrosion prevention compound between the bearing and fitting interfaces
as shown on section view B-B of Ref. Fig. Removal of Sealant and Application of
Corrosion Preventive Compound and Grease in the Lower Corner Fitting Bearing
ASSY:
  Corrosion Preventive
Compound - Water
Displacing Soft Film
12ABC1

### Page 30

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 30
(g) Allow 30 minutes to dry the corrosion preventive compound - water repellent
fluid.
(h) Apply synthetic oil base grease around the bearing contour as shown on section
view B-B of Ref. Fig. Removal of Sealant and Application of Corrosion Preventive
Compound and Grease in the Lower Corner Fitting Bearing ASSY:
  Synthetic Oil base
Grease - General
Purpose Lithium
Thickened Low T emp
03GBC1

### Page 31

A350
SERVICE BULLETIN
Figure ICN-A350-A-53XXP037-A-FAPE3-04667-A-001-01 SHEET 1/2
REV 00 Nov 12/18 A350-53-P037Removal of Sealant and Application of
Corrosion Preventive Compound and Grease
in the Lower Corner Fitting Bearing ASSY Page 31
CONF ALL
C
C
B
B
FR102
FR93
A
A
Z311
Z312
LH
RH
ICN-A350-A-53XXP037-A-FAPE3-04667-A-001-01

### Page 32

A350
SERVICE BULLETIN
Figure ICN-A350-A-53XXP037-A-FAPE3-04668-A-003-01 SHEET 2/2
REV 00 Nov 12/18 A350-53-P037Removal of Sealant and Application of Corrosion Preventive Compound and Grease in the Lower Corner Fitting Bearing ASSY
Page 32
CONF ALL
C
LH SHOWN
RH SYMMETRICAL
A
A
TYPICAL
A A
TYPICAL
B B
REMOVE THE COATING - FLEXIBLE STRUCTURE.01
APPLY CORROSION PREVENTIVE COMPOUND - WATER REPELLANT FLUID MATERIAL No 12ABC1.
02
AFTER 30 MINUTES OF CORROSION PREVENTIVE COMPOUND - WATER REPELLANT FLUID APPLICATION, APPLY GREASE MATERIAL No. 03GBC1.
03
NOTE:
BEFORE AFTER
NUT
LOCK
WASHER
CORNER
FITTING
BEARING
ASSY
BUSHING
PAD PLATE
CORNER
FITTING
01
01
01
01
02
02
02
02
04
03
03
03
03
04
04
04
04
REMOVE THE SEALANT BEADS.
B
B
NUT
LOCK
WASHER
CORNER
FITTING
BEARING
ASSY
BUSHING
PAD PLATE
CORNER
FITTING
ICN-A350-A-53XXP037-A-FAPE3-04668-A-003-01

### Page 33

A350
SERVICE BULLETIN
REV 00 Nov 12/18 A350-53-P037
Page 33
D. PREPARATION FOR TEST
None
E. TEST
None
F. CLOSE-UP
(1) Task A350-A-53-XX-P037-01001-740A-A - Close-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 1.00 h
Minimum Number of person 1
Elapsed Time 1.00 h
Material necessary to do the job
Aircraft standard tools
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
98V53509013000 1 PLATFORM
98V55109012000 1 PROT
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-44-XX-01ZZZ-240Z-A
Procedure
(a) Make sure that the work areas are clean and clear of tools and other items of
equipment.
(b) Remove:
1 PROT FLOOR PANEL-HTP 98V55109012000  
and
1 PLATFORM FR102 - S19 98V53509013000  
(c) Close the access doors 311AB and 311BB.
(d) Remove the access platform(s).
(e) Do the Close-up procedure as specified in the lubrication of the THS hinge line
bearings and the upper and lower frame attachment-bearings, refer to Ref. MP
A350-A-27-44-XX-01ZZZ-240Z-A.
(f) Put the aircraft back to its initial configuration.
G. ADMINISTRATIVE
(1) Task A350-A-53-XX-P037-01001-90AA-A - Administrative
Procedure
Confirm in the applicable aircraft records that you have completed all the work defined
in this Service Bulletin task set as required.

### Page 34

A350
SERVICE BULLETIN
APPENDIX
REV 00 Nov 12/18 A350-53-P037
Page 34
APPENDIX
A. 01 - Manpower Gantt Chart
01 - Manpower Gantt Chart
For an explanation of the man-hours and elapsed time, refer to the next page(s).

### Page 35

A350
SERVICE BULLETIN
APPENDIX
Figure ICN-A350-A-53XXP037-A-FAPE3-04669-A-003-01 SHEET 1/1
REV 00 Nov 12/18 A350-53-P037Manpower Gantt Chart
Page 35
CONF ALL
MH
ET/S:
PER
MANHOURS
ELAPSED TIME PER STEP
NUMBER OF PERSONS
THIS CHART IS ONLY A PROPOSAL.
OPERATORS MAY DETERMINE THAT ANOTHER WAY
TO DO THE WORK IS MORE SUITABLE FOR THEM.
01
02
NOTE:
:
:
IF A VSB IS INVOLVED, THE ASSOCIATED MANHOURS
ARE NOT REFLECTED IN THIS GANTT CHART.
MH ET/SPERSTEPS
ELAPSED TIME ASSUMPTION SERVICE BULLETIN No A350-53-P037 01 02
REMOVAL OF SEALANT AND APPLICATION OF CORROSION
PREVENTIVE COMPOUND AND GREASE IN THE UPPER CORNER
REMOVAL OF SEALANT AND APPLICATION OF CORROSION
PREVENTIVE COMPOUND AND GREASE IN THE UPPER CORNER
REMOVAL OF SEALANT AND APPLICATION OF CORROSION
PREVENTIVE COMPOUND AND GREASE IN THE LOWER CORNER
REMOVAL OF SEALANT AND APPLICATION OF CORROSION
PREVENTIVE COMPOUND AND GREASE IN THE LOWER CORNER
GET ACCESS
CLOSE-UP
FITTING BEARING ASSY AT FR102, LH SIDE
FITTING BEARING ASSY AT FR102, RH SIDE
FITTING BEARING ASSY AT FR102, LH SIDE
FITTING BEARING ASSY AT FR102, RH SIDE
8.00 8.00
8.00 8.00
8.00 8.00
1
1
1
1.00 1.001
8.00 8.001
1.00 1.001
SB ELAPSED TIME
(HOURS)
TOTAL MANHOURS
SB ELAPSED TIME
34.00
18.00
41 10 122 3 9 11 130 85 15 176 7 14 16 18
ICN-A350-A-53XXP037-A-FAPE3-04669-A-003-01

### Page 36

A350
SERVICE BULLETIN
APPENDIX
REV 00 Nov 12/18 A350-53-P037
Page 36
B. REPORTING SHEET
TITLE: FUSELAGE - CONE/REAR FUSELAGE - APPLY NEW CORROSION
PROTECTION SCHEME IN THS UPPER AND LOWER ATTACHMENT
FITTING BEARING ASSY
MODIFICATION No.: 113501L83009
(1) SB Reporting status
This Service Bulletin will only be incorporated into affected customized Maintenance
and Flight Operations Products if it is duly reported to Airbus.
(2) GENERAL information
The SB Reporting policy is published in ISI 00.00.00135. This document provides
information regarding: the SB Reporting means and benefits, the update of
customized Maintenance Products and customized Flight Operations Products.
If this Service Bulletin has an operational impact, refer to paragraph "Flight Operations
Products" for further information on the update of affected Flight Operations Products.
(3) SB Reporting procedure
Standard practice to report SB is to use the online reporting application on
AirbusWorld.
Refer to ISI 00.00.00179:
- For complete information on reporting means to Airbus, Question 2 "What are
the standard practices for SB Reporting?"
- If this SB requires previous or simultaneous accomplishment of other SBs,
Question 3 "What about the reporting of prerequisite Service Bulletins?"
NOTE: ISI 00.00.00179 covers all the frequently asked questions about SB Reporting.
It is revised on a regular basis.

### Page 37

A350
SERVICE BULLETIN
APPENDIX
REV 00 Nov 12/18 A350-53-P037
Page 37
C. QUALITY PERCEPTION FORM
Use this form to tell us what is your perception of the quality of this Service Bulletin.
The reported data that you provide us will be used to analyse areas of difficulties and to
take corrective action to further improve the quality of our Service Bulletin.
We thank you for the time you have taken in completing this form.
Quality rating of this SB 4 3 2 1
Quality rating of the Accomplishment Instructions 4 3 2 1
Quality rating of the Illustrations 4 3 2 1
Is this SB easy to understand ? Y / N
NOTE: Please rate on a scale of 1 to 4, with 4 being the highest score
If you have difficulties in the accomplishment of this SB please quote below the area(s) and
give a short description of the issue.
Planning Material Instructions
X Applicability X T ooling X Preparation
X Reason X List of Materials
Operator Supplied
X Mod/Inspection
X Manpower X Kit content X T est
X References X Re-identification X Close-up
X Publication X Illustrations
X Industry Support
Comments :
Operator : Date :
Name/Title
Please return this form to :
AIRBUS CUSTOMER SERVICES DIRECTORATE
Service Bulletins Management
1 Rond Point Maurice Bellonte
31707 BLAGNAC CEDEX
FRANCE
Fax: (+33) 5 61 93 42 51
Or via your Resident Customer Support Office.

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