# Airbus Service Bulletin A350-29-P020

Copy: No revision named ("A350-29-P020"), 58 pages: PDF https://openairdocs.org/files/sha256/d5/f8/d5f8a2baa414b19a8b221a6d25768b94843c1b0c2407797d4c18bde2591c70d3; text https://openairdocs.org/service-documents/airbus/a350-29-p020/file/d5f8a2baa414.md. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2023-0656, the docket of AD 2023-13-13. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Airbus](https://openairdocs.org/service-documents/airbus.md)
- Type: Service bulletin (Service Bulletin)
- Number: A350-29-P020
- Page: https://openairdocs.org/service-documents/airbus/a350-29-p020

## Text (58 pages)

Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2023-0656, the docket of AD 2023-13-13. 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 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 1
CONF ALL
AIRBUS
2, ROND POINT EMILE DEWOITINE
31700 BLAGNAC
FRANCE
 
The content of this document is the property of Airbus. All rights including copyrights are reserved.
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.
MANDATORY MANDATORY MANDATORY
ATA SYSTEM: 29
TITLE: HYDRAULIC POWER - GENERAL - UPGRADE LOW PRESSURE PIPE
STANDARD S11-12 FOR A350-900 (6 YEARS)
MODIFICATION No.:
113982L44225

### Page 2

A350
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 2
ATA SYSTEM: 29
TITLE: HYDRAULIC POWER - GENERAL - UPGRADE LOW PRESSURE PIPE
STANDARD S11-12 FOR A350-900 (6 YEARS)
REVISION TRANSMITTAL SHEET
This page transmits Revision No. 01 of Service Bulletin No. A350-29-P020.
A. ADDITIONAL WORK
No additional work is required by this revision.
B. REASON
Revision No. 01 issued to solve the issue with the swaged union in the frame between nose
fuselage and the cargo compartment.
C. CHANGES
SUMMARY
REASON Note added in the advantages section to cover the
concessions.
APPLICABILITY List of operators updated.
GENERAL OVERVIEW
Fig.SA Sol.AA General Overview Illustrations updated to add the pipe between Frame
21 and Frame 22.
PLANNING INFORMATION
APPLICABILITY List of operators updated.
REASON Note added in the advantages section to cover the
concessions.
MANPOWER
T ask set A350-A-29-XX-P020-
01000-93AA-A Modification of
Low Pressure T ubes S11-12
T otal man-hours updated from 119.75h to 129.75h.
Elapsed time updated from 60h to 65h.
WEIGHT AND BALANCE Weight modify from +0.2 kg to +0.209 kg
Balance modify from +2.1 kg to +2.651 kg
REFERENCES
T ask set A350-A-29-XX-P020-
01000-93AA-A Modification of
Low Pressure T ubes S11-12
MP A350-A-53-XX-XX-03ZZZ-520Z-A and MP A350-A-
53-XX-XX-03ZZZ-720Z-A added.
PMS 01-06-12 added.
INDUSTRY SUPPORT INFORMATION Industry support information updated.
MATERIAL INFORMATION
CONSUMABLES
Consumables for task set
A350-A-29-XX-P020-01000-
93AA-A Modification of Low
Pressure T ubes S11-12
CML 06AAB1, 06LCB1, 08BAA9 and 14SBA1 added.
Referenced consumables for
task set A350-A-29-XX-P020-
01000-93AA-A Modification of
Low Pressure T ubes S11-12
Paragraph created.

### Page 3

A350
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 3
LIST OF NEW PARTS
Part kit 29P020D01R02 Kit revised:
- Item 17 NAS1149C0332R updated from qty 18 to qty
20.
- Item 60 V2919013000000 added.
- Item 61 NSA855006-10 added.
- Price updated.
Components for task set A350-
A-29-XX-P020-01000-93AA-A
Modification of Low Pressure
T ubes S11-12
Component created for ABS0653-04.
LIST OF EXISTING PARTS
Interchangeable parts for task
set A350-A-29-XX-P020-01000-
93AA-A Modification of Low
Pressure T ubes S11-12
Interchangeable parts updated to add pipe between
Frame 21 and Frame 22.
Spare parts for task set A350-
A-29-XX-P020-01000-93AA-A
Modification of Low Pressure
T ubes S11-12
Interchangeable parts updated to add pipe between
Frame 21 and Frame 22.
ACCOMPLISHMENT INSTRUCTIONS
T ask set A350-A-29-XX-P020-01000-93AA-A Modification of Low Pressure T ubes S11-12
PREPARATION
A350-A-29-XX-P020-
01002-540A-A Job Set-Up
Manpower updated.
Step (f) added to remove the cargo-compartment floor
panels.
Step (h) updated to change Frame 21 to Frame 22.
PROCEDURE
A350-A-29-XX-P020-
01003-520A-A Remove
the Yellow Hydraulic T ubes
between Frame 12 and
Frame 22
Title updated to change Frame 21 to Frame 22.
Working area updated.
Manpower updated.
Standard practices updated.
Step (d) added to remove the clamp, item (53).
Step (g) added to do a pre-cut of item (50).
Step (h) updated to add item (50).
Step (i) updated to disconnect tube, item (54), and
clean the area.
Fig.BB Sol.AA Removal of
the Hydraulic T ubes
Sheet 01 revised to show tube item (50) between
Frame 21 and Frame 22.
Sheet 02 revised to mark item (54) and add a note.
Sheet 04 created to show view J and K.
A350-A-29-XX-P020-
01002-720A-A Install the
Yellow Hydraulic T ubes
Title updated to change Frame 21 to Frame 22.
Working area updated.
Manpower updated.

### Page 4

A350
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 4
between Frame 12 and
Frame 22
Step (b) updated to apply sealant 06AAB1 and
connect tube, item (54).
Step (c) updated to add a note, put temporarily in
position, add the item 60 and mark the tubes.
Step (d) updated to group the installation of all blocks-
clampings and clamps and add a note.
Bonding test step added.
New steps (e), (f), (g), (h), (i), (j), (k), (l) and (m)
added.
Fig.BC Sol.AA Installation
of the Hydraulic T ubes
Sheet 01 revised to show tubes, item (50) and 60,
between Frame 21 and Frame 22.
Sheet 02 revised to mark item (54) and add a note.
Sheet 04 created to show view J and K.
Sheet 05 created to show view L, M and N.
PREPARATION FOR TEST
A350-A-29-XX-P020-
01001-762A-A Preparation
for test
Paragraph updated.
TEST
A350-A-29-XX-P020-
01001-320A-A T est
Paragraph updated.
CLOSE-UP
A350-A-29-XX-P020-
01002-740A-A Close-Up
Manpower updated.
Step (e) updated to change Frame 21 to Frame 22.
Step (f) updated to change Frame 21 to Frame 22.
Step (g) added to install the cargo-compartment floor
panels.
APPENDIX
LIST OF CONCESSIONS New appendix created.
LIST OF CONCESSIONS Appendix created to show the list of concessions for
the applicable MSNs.
Fig.AC Sol.AA List of
Concessions
New illustration created.
D. FILING INSTRUCTIONS
This Service Bulletin has been generated electronically and is reissued as a complete
document. Replace the complete document.
Put this Revision Transmittal Sheet in front of the Service Bulletin.
E. HISTORY OF PREVIOUS REVISIONS
No previous revision
F. REVISION SEQUENCE
ORIGINAL: Dec 17/21
REVISION No. : 01 - Jul 28/22

### Page 5

A350
SERVICE BULLETIN
SUMMARY
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 5
ATA SYSTEM: 29
TITLE: HYDRAULIC POWER - GENERAL - UPGRADE LOW PRESSURE PIPE
STANDARD S11-12 FOR A350-900 (6 YEARS)
SUMMARY
This summary is for information only and is not approved for modification of the aircraft.
A. MODIFICATIONS
MODIFICATION CLASSIFICATION
MAJOR None
MINOR 113982L44225
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.
NOTE: This modification is related to an airworthiness issue and has been re-classified and
confirmed by EASA as minor in accordance with EU Part 21.A.91. As such, this is
handled by Airbus under the Design Organisation Approval ref. EASA.21J.031.
B. REASON
(1) History
This Service Bulletin has been issued to advise operators of spots and stains
discovered on tubes made from aluminium 6061 T6 after alodine process. As
consequence, micrographs show a reduction of wall thickness up to 15%. Additionally,
the process applied by the supplier for the determination of maximum ovality was
not in accordance with the manufacturer pipes specification. The effective pipes are
installed in the return line of yellow hydraulic system only. Only the sections 11 to 12,
13 to 14 and 15 are affected.
The consequence of these findings may affect the pipe and introduces a risk of
premature failure.
(2) Objective/Action
This Service Bulletin gives instructions to replace all applicable aluminium pipes by
titanium pipes.
(3) Advantages
The accomplishment of this Service Bulletin will prevent the risk of premature failure.
NOTE: The accomplishment of this Service Bulletin will supersede the concessions
for the applicable Manufacturer Serial Number (MSN)s, refer to Appendix LIST
OF CONCESSIONS.
(4) Operational/Maintenance Consequences
None
C. GENERAL EVALUATION
EVALUATION TABLE
COMPLIANCE MANDATORY COST SAVING NO

### Page 6

A350
SERVICE BULLETIN
SUMMARY
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 6
EVALUATION TABLE
A/C OPERATION
AFFECTED
NO VENDOR SB NO
CANCELS INSPECTION SB NO ETOPS AFFECTED NO
PAX COMFORT AFFECTED NO POTENTIAL AD YES
RELIABILITY AFFECTED NO STRUCTURAL LIFE EXTENSION NO
LIFE LIMIT NO LINE MAINTENANCE AFFECTED NO
NOTE: Service Bulletin must be accomplished.
D. MAINTENANCE CONFIGURATION
No specific aircraft maintenance configuration required.
E. MATERIAL PRICE INFORMATION
(1) Modification of Low Pressure Tubes S11-12
(a) T ask set A350-A-29-XX-P020-01000-93AA-A Modification of Low Pressure T ubes
S11-12
MATERIAL PRICE INFORMATION TABLE
MATERIAL SET QTYPER A/C PRICE PER A/C MAIN PARTS
Part kit 29P020D01R02 1 11000.00 USD Bolts, nuts, clamps, washers,
unions, tubes and elbow
Components See SB See Note  
NOTE: Price information to be obtained from the given supplier.
F. APPLICABILITY
This Service Bulletin is applicable to this (these) operator(s):
96U AAR AZU CAL CCA CHH CPA DAL DLH ETH FBU FIN FWI HVN MAS MAU QTR SIA THA
G. CONCURRENT REQUIREMENTS
None
H. NATURE OF THE WORK
(1) Modification of Low Pressure Tubes S11-12
(a) T ask set A350-A-29-XX-P020-01000-93AA-A Modification of Low Pressure T ubes
S11-12
AIRCRAFT YES
EQUIPMENT NO
I. MANPOWER
(1) Modification of Low Pressure Tubes S11-12

### Page 7

A350
SERVICE BULLETIN
SUMMARY
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 7
(a) T ask set A350-A-29-XX-P020-01000-93AA-A Modification of Low Pressure T ubes
S11-12
MANPOWER
TOTAL MAN-HOURS 129.75
h
ELAPSED TIME (HOURS) 65.00 h

### Page 8

A350
SERVICE BULLETIN
SUMMARY
Figure ICN-A350-A-29XXP020-A-FAPE3-04NCU-A-003-01 Fig.SA Sol.AA SHEET 1/1
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
General Overview
Page 8
J. GENERAL OVERVIEW
CONF ALL
A
FWD CARGO DOOR
Z120
Z130
FR12
FR21
FR27
A
FR12
FR13
FR14
FR16
FR17
FR19
FR18
HYDRAULIC TUBE
TO BE REPLACED
HYDRAULIC TUBE
TO BE REPLACED
FR20
HYDRAULIC TUBE
TO BE REPLACED
T-CONNECTION
FR21
HYDRAULIC TUBE TO BE
CUT AND REPLACED
ICN-A350-A-29XXP020-A-FAPE3-04NCU-A-003-01

### Page 9

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 9
ATA SYSTEM: 29
TITLE: HYDRAULIC POWER - GENERAL - UPGRADE LOW PRESSURE PIPE
STANDARD S11-12 FOR A350-900 (6 YEARS)
1. PLANNING INFORMATION
A. APPLICABILITY
NOTE: This modification is applicable by Service Bulletin only.
(1) Models
ON A/C 0083-0087, 0089-0101, 0107, 0109, 0111-0117, 0119, 0120, 0124, 0128-0130, 0132-
0138, 0140, 0142-0151, 0153-0155, 0157-0160, 0162-0165, 0167, 0168, 0170, 0172-0187,
0189-0193, 0195-0205, 0207-0212, 0224, 0245
350-941
CONF ALL
(2) Applicability by MSN
0083-0087 0089-0101 0107 0109 0111-0117 0119 0120 0124 0128-0130 0132-0138
0140 0142-0151 0153-0155 0157-0160 0162-0165 0167 0168 0170 0172-0187 0189-
0193 0195-0205 0207-0212 0224 0245
(3) MSN by configuration
MSN CONFIGURATION
0083 0084 0085 0086 0087 0089 0090 0091 0092 0093 0094
0095 0096 0097 0098 0099 0100 0101 0107 0109 0111 0112
0113 0114 0115 0116 0117 0119 0120 0124 0128 0129 0130
0132 0133 0134 0135 0136 0137 0138 0140 0142 0143 0144
0145 0146 0147 0148 0149 0150 0151 0153 0154 0155 0157
0158 0159 0160 0162 0163 0164 0165 0167 0168 0170 0172
0173 0174 0175 0176 0177 0178 0179 0180 0181 0182 0183
0184 0185 0186 0187 0189 0190 0191 0192 0193 0195 0196
0197 0198 0199 0200 0201 0202 0203 0204 0205 0207 0208
0209 0210 0211 0212 0224 0245
001
(4) Configuration definition
Configuration 001
CONF 001 is applicable for all the aircraft affected by this Service Bulletin as a
standard configuration.
 
CONF 001 retrofits following modifications: 113982L44225.
B. CONCURRENT REQUIREMENTS
None
C. REASON
(1) History
This Service Bulletin has been issued to advise operators of spots and stains
discovered on tubes made from aluminium 6061 T6 after alodine process. As
consequence, micrographs show a reduction of wall thickness up to 15%. Additionally,
the process applied by the supplier for the determination of maximum ovality was
not in accordance with the manufacturer pipes specification. The effective pipes are

### Page 10

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 10
installed in the return line of yellow hydraulic system only. Only the sections 11 to 12,
13 to 14 and 15 are affected.
The consequence of these findings may affect the pipe and introduces a risk of
premature failure.
(2) Objective/Action
This Service Bulletin gives instructions to replace all applicable aluminium pipes by
titanium pipes.
(3) Advantages
The accomplishment of this Service Bulletin will prevent the risk of premature failure.
NOTE: The accomplishment of this Service Bulletin will supersede the concessions
for the applicable Manufacturer Serial Number (MSN)s, refer to Appendix LIST
OF CONCESSIONS.
(4) Operational/Maintenance Consequences
None
D. DESCRIPTION
T o accomplish this Service Bulletin it is necessary to:
(1) Modification of Low Pressure Tubes S11-12
(a) T ask set A350-A-29-XX-P020-01000-93AA-A Modification of Low Pressure T ubes
S11-12
1 Remove the Yellow Hydraulic T ubes between Frame 12 and Frame 22
2 Install the Yellow Hydraulic T ubes between Frame 12 and Frame 22
E. COMPLIANCE
(1) Classification
MANDATORY: Service Bulletin must be accomplished.
(2) Accomplishment Timescale
This Service Bulletin has been classified Mandatory. It is expected that an
Airworthiness Directive (AD) published by the European Aviation Safety Agency (EASA)
will be issued to confirm this classification. The accomplishment timescale, which has
not yet been defined, will be given in the AD.
F. APPROVAL
The technical content of this document is approved under the authority of the Design
Organisation Approval ref. 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.

### Page 11

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 11
(1) Modification of Low Pressure Tubes S11-12
(a) T ask set A350-A-29-XX-P020-01000-93AA-A Modification of Low Pressure T ubes
S11-12
PREPARATION
Job Set-Up 29.00 h
PROCEDURE
Remove the Yellow Hydraulic T ubes between Frame 12 and
Frame 22
16.00 h
Install the Yellow Hydraulic T ubes between Frame 12 and
Frame 22
38.00 h
PREPARATION FOR TEST
Preparation for test 0.25 h
TEST
T est 1.50 h
CLOSE-UP
Close-Up 45.00 h
TOTAL MAN-HOURS 129.75 h
ELAPSED TIME (HOURS) 65.00 h
H. WEIGHT AND BALANCE
The weight and balance estimates given in this Service Bulletin are based on the
Manufacturer's Empty Weight (MEW) and do not include operator's items. The definition of
MEW and operator's items is given in the Weight and Balance Manual (WBM), Ref. WBM.
Manufacturer's Empty Weight +0.209 kg (+0.461 lb)
Effect on Balance +2.651 kg.m (+19.175 lb.ft)
I. ELECTRICAL LOAD DATA
Not changed
J. REFERENCES
(1) Modification of Low Pressure Tubes S11-12
(a) T ask set A350-A-29-XX-P020-01000-93AA-A Modification of Low Pressure T ubes
S11-12
AIRCRAFT STRUCTURAL REPAIR (ASR)
A350-A-51-24-XX-01ZZZ-667Z-A A350-A-51-4X-XX-01ZZZ-667Z-A
A350-A-51-42-XX-01ZZZ-667Z-A A350-A-51-43-XX-01ZZZ-667Z-A
ELECTRICAL STANDARD PRACTICES (ESP)
A350-A-20-33-42-01ZZZ-041Z-A A350-A-20-51-50-01ZZZ-042Z-A
A350-A-20-55-XX-01ZZZ-042Z-A
INTRODUCTION (INTRO)
A350-A-00-61-04-11ZZZ-018Z-D
MAINTENANCE PROCEDURE (MP)
A350-A-20-51-50-01ZZZ-25BZ-A A350-A-20-51-61-00ZZZ-25BZ-A

### Page 12

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 12
MAINTENANCE PROCEDURE (MP)
A350-A-20-51-61-08ZZZ-25BZ-A
A350-A-21-2X-XX-00ZZZ-520Z-A
A350-A-21-2X-XX-00ZZZ-720Z-A
A350-A-24-41-XX-00ZZZ-170Z-A
A350-A-29-XX-XX-00ZZZ-360Z-A
A350-A-29-XX-XX-02ZZZ-170Z-A
A350-A-29-13-XX-00ZZZ-320Z-A
A350-A-29-13-75-00ZZZ-720Z-A A350-A-32-22-XX-00ZZZ-397Z-A
A350-A-32-22-XX-01ZZZ-397Z-A
A350-A-32-5X-XX-00ZZZ-345Z-A
A350-A-32-5X-XX-00ZZZ-398Z-A
A350-A-49-42-XX-00ZZZ-320Z-A
A350-A-49-42-54-01ZZZ-520Z-A
A350-A-49-42-54-01ZZZ-720Z-A
A350-A-53-XX-XX-03ZZZ-520Z-A
A350-A-53-XX-XX-03ZZZ-720Z-A
A350-A-53-12-75-00ZZZ-520Z-A
A350-A-53-12-75-00ZZZ-720Z-A
PROCESS AND MATERIAL SPECIFICATION (PMS)
01-04-58 01-06-12
01-07-117
SYSTEM DESCRIPTION (SD)
A350-A-06-2X-XX-01ZZZ-04CZ-A A350-A-06-3X-XX-01ZZZ-04CZ-A
TECHNICAL FOLLOW UP (TFU)
29.00.00.090
WEIGHT AND BALANCE MANUAL (WBM)
STANDARDS MANUAL (SM)
CONSUMABLE MATERIAL LIST (CML)
K. PUBLICATION AFFECTED
MAINTENANCE ILLUSTRATED PART DATA (MIPD)
L. INDUSTRY SUPPORT INFORMATION
AIRBUS will share the costs of accomplishment of this Service Bulletin by providing the kits
at no charge for orders placed before Apr 30/25.
For the accomplishment of this Service Bulletin before Apr 30/25, AIRBUS will credit the
man-hours indicated in this Service Bulletin at the agreed in-house warranty labor rate.
Claims for this allowance shall be received no later than 90 days after completion of the last
affected aircraft of your fleet fulfilling above timeframe conditions.
For the accomplishment of this Service Bulletin before Apr 30/25, AIRBUS will share the
costs by crediting the operator supplied standard hardware parts. Claims for this allowance
should be received no later than 90 days after completion of the last affected aircraft of
your fleet fulfilling above timeframe conditions.
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.

### Page 13

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 13
2. MATERIAL INFORMATION
A. MATERIAL APPLICABILITY
Material for task set A350-A-29-XX-P020-01000-93AA-A Modification of Low
Pressure Tubes S11-12
MATERIAL QTY SEE NOTES
Referenced tools See SB
Consumables See SB
Referenced consumables See SB
Part kit 29P020D01R02 1
Components See SB
Interchangeable parts See SB
Spare parts See SB
B. TOOLING
Referenced tools for task set A350-A-29-XX-P020-01000-93AA-A Modification of
Low Pressure Tubes S11-12
T o accomplish this Service Bulletin it is necessary to use the tools listed in:
Ref. MP A350-A-32-22-XX-00ZZZ-397Z-A
Ref. MP A350-A-32-5X-XX-00ZZZ-398Z-A
Ref. MP A350-A-32-22-XX-01ZZZ-397Z-A
Ref. MP A350-A-20-51-61-08ZZZ-25BZ-A
C. CONSUMABLES
Consumables for task set A350-A-29-XX-P020-01000-93AA-A Modification of Low
Pressure Tubes S11-12
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
04QAC5
Coating - - Corrosion
Inhibiting Fastener Head
Protection
06AAB1 Polysulfide Sealant -General Purpose Fillet
06AAC1 Polysulfide Sealant -General Purpose Interfay
06ACA1
Polysulfide Sealant - Low
Density MultiPurpose
Brushable
06LCB1
Non Hardening Jointing
Putty - Medium T emp. Area
Chromate Free
08BAA9 Non Aqueous Cleaner -General
14SBA1 T extile - Lint free Cotton
Referenced consumables for task set A350-A-29-XX-P020-01000-93AA-A
Modification of Low Pressure Tubes S11-12
T o accomplish this Service Bulletin it is necessary to use the consumable materials listed in:

### Page 14

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 14
Ref. MP A350-A-20-51-61-00ZZZ-25BZ-A
Ref. MP A350-A-20-51-61-08ZZZ-25BZ-A
Ref. MP A350-A-21-2X-XX-00ZZZ-720Z-A
Ref. MP A350-A-29-XX-XX-02ZZZ-170Z-A
Ref. MP A350-A-49-42-54-01ZZZ-720Z-A
Ref. MP A350-A-53-XX-XX-03ZZZ-720Z-A
Ref. MP A350-A-53-12-75-00ZZZ-720Z-A
D. LIST OF NEW PARTS
Part kit 29P020D01R02
Cost 11000.00 USD
Availability 280 d (calendar days from receipt of order)
NOTE(S)
The sales terms (costs and availability) are estimated in relation to economic
conditions. The latest valid price and lead time for ordering purposes shall be
obtained through the AIRBUS Spares portal or through a request for quotation to
airbus.kit@airbus.com.
The availability given above is the standard lead time from the date of your purchase
order. If items are required before this time, please include a retrofit planning
schedule with your order so that we can try to comply with your requirements.
Procurement address D4296
AIRBUS
Material, Logistics and Suppliers ATP II B,
Hein-Sass-Weg 24
21129 HAMBURG
GERMANY
Phone: +49 40 743 51775
E-mail: airbus.kit@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.
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
1 V2911015100000 1 TUBE
2 V2911015200000 1 TUBE
3 V2911015300000 1 TUBE
4 V2911015400000 1 TUBE
5 V2911015500000 1 TUBE
6 V2911015600000 1 TUBE
7 ABS1125-10 1 UNION
8 ABS0478-1010 5 UNION
9 NSA855007-10 1 ELBOW
12 NSA5575-8A 1 CLAMP
15 NSA5191-3-10 1 BOLT
16 ABS0114T3-9 3 BOLT

### Page 15

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 15
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
17 NAS1149C0332R 20 WASHER
18 NAS1726C3PE 4 NUT
19 NAS509-3C 1 NUT
20 ABS0114V3-26 10 BOLT
21 NSA5191-3V9 8 BOLT
22 NAS1149D0332K 18 WASHER
23 NAS1149E0332P 8 WASHER
24 NAS1726C3E 8 NUT
33 NSA5067-3-1 2 NUT
60 V2919013000000 1 TUBE
61 NSA855006-10 1 UNION
NOTE(S)
Refer to the AIRBUS Ref. SM if you find part numbers of hardware components which
you cannot identify. The SM will give you the correct part number to part number
relationship.
Components for task set A350-A-29-XX-P020-01000-93AA-A Modification of Low
Pressure Tubes S11-12
Procurement address D4296
AIRBUS Material, Logistics and Suppliers Standard
Parts
Customer Order Fulfilment
Phone: +49 (0) 40 50 76 40 02
E-mail: Please contact your Single Point Of Contact
(SPOC)
Internet: http://spares.airbus.com or via SPEC2000
NOTE(S)
For standard hardware the purchase order must be addressed to AIRBUS at the
address given above. Quote the number of this Service Bulletin, the MSN and, if
applicable the Retrofit Information Letter (RIL) reference.
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
ABS0653-04 (D4296) 1 (m) TAPE (1) (2) (3)
NOTE(S)
(1): Operator supplied standard hardware parts, required to accomplish this Service
Bulletin, are to be supplied from the operator's stock.
(2): This item has a Shelf Life of less than or equal to 24 months and must be ordered
when you intend to accomplish the Service Bulletin.
(3): The components listed above are not an AIRBUS Kit, the required parts must be
ordered as necessary through the given channel.
E. LIST OF EXISTING PARTS
Interchangeable parts for task set A350-A-29-XX-P020-01000-93AA-A Modification
of Low Pressure Tubes S11-12
DESCRIPTION OLD PART No. NEW PART No. INT SEE NOTES
TUBE V2911009100000 V2911015300000 03 (1) (2)
TUBE V2911009200000 V2911015400000 03 (1) (2)
TUBE V2911009600000 V2911015200000 03 (1) (2)

### Page 16

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 16
DESCRIPTION OLD PART No. NEW PART No. INT SEE NOTES
TUBE V2911009700000 V2911015100000 03 (1) (2)
TUBE V2911014300000 V2911015600000 03 (1) (2)
TUBE V2911014800000 V2911015500000 03 (1) (2)
TUBE V2919002500000 V2919013000000 03 (1) (2)
NOTE(S)
For definitions of interchangeability codes in column INT. refer to ATA (CSDD Chapter
2).
(1): One-way interchangeable with conditions:
- The Post-MOD part numbers listed above can replace Pre-MOD part numbers
listed above as a set in one aircraft section
- The Pre-MOD part numbers listed above cannot replace Post-MOD part
numbers listed above.
(2): The interchangeability possibilities are for new or modified parts introduced by the
accomplishment of this Service Bulletin.
Spare parts for task set A350-A-29-XX-P020-01000-93AA-A Modification of Low
Pressure Tubes S11-12
DESCRIPTION OLD PART No. SEE NOTES
TUBE V2911009100000 (1)
TUBE V2911009200000 (1)
TUBE V2911009600000 (1)
TUBE V2911009700000 (1)
TUBE V2911014300000 (1)
TUBE V2911014800000 (1)
TUBE V2919002500000 (1)
NOTE(S)
(1): The parts listed here must not be installed anymore on aircraft which have
accomplished this Service Bulletin or which have the equivalent production
modification embodied.

### Page 17

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 17
3. ACCOMPLISHMENT INSTRUCTIONS
Task set A350-A-29-XX-P020-01000-93AA-A (A350-A-29-XX-P020-01ZZZ-93AZ-A)
Modification of Low Pressure T ubes S11-12
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 is classified mandatory or expected to be classified mandatory by
an Airworthiness Directive (AD). The paragraphs 3.C. and 3.E. in these accomplishment
instructions are Required for Compliance (RC) and must be done to comply with the AD.
T o allow more flexibility, the rule "refer to" and "in accordance with" will apply to these
paragraphs 3.C. and 3.E. Other paragraphs are recommended and may be deviated from,
done as part of other actions or done with accepted methods different from those given
in the Service Bulletin, as long as the RC paragraphs can be done and the aircraft can be
put back into a serviceable condition.
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.
NOTE: Discarded parts must be managed at the operator's discretion.
A. TASK SET ASSOCIATED INFORMATION
Task Manpower
TOTAL MAN-HOURS 129.75 h
ELAPSED TIME (HOURS) 65.00 h

### Page 18

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 18
B. PREPARATION
(1) Task A350-A-29-XX-P020-01002-540A-A (A350-A-29-XX-P020-01ZZZ-540Z-A)
Job Set-Up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 29.00 h
Minimum Number of person 2
Elapsed Time 14.50 h
Referenced Information
Manuals/Drawings References/Sheets
ASR A350-A-51-42-XX-01ZZZ-667Z-A
INTRO A350-A-00-61-04-11ZZZ-018Z-D
MP
A350-A-21-2X-XX-00ZZZ-520Z-A
A350-A-24-41-XX-00ZZZ-170Z-A
A350-A-29-XX-XX-02ZZZ-170Z-A
A350-A-32-22-XX-00ZZZ-397Z-A
A350-A-32-5X-XX-00ZZZ-398Z-A
A350-A-49-42-54-01ZZZ-520Z-A
A350-A-53-12-75-00ZZZ-520Z-A
A350-A-53-XX-XX-03ZZZ-520Z-A
SD A350-A-06-2X-XX-01ZZZ-04CZ-AA350-A-06-3X-XX-01ZZZ-04CZ-A
Procedure
NOTE: For the basic Aircraft configuration, refer to Ref. INTRO A350-A-00-61-04-
11ZZZ-018Z-D "Maintenance Procedure - Introduction".
(a) Standard practices given in this procedure:
1 For identification of zones, refer to Ref. SD A350-A-06-3X-XX-01ZZZ-04CZ-A.
2 For the Frame (FR) identification, refer to Ref. SD A350-A-06-2X-XX-01ZZZ-
04CZ-A.
3 Obey the general rules for removal and installation procedures for the
hydraulic systems, refer to Ref. MP A350-A-29-XX-XX-02ZZZ-170Z-A.
4 Remove and install fasteners in accordance with Ref. ASR A350-A-51-42-XX-
01ZZZ-667Z-A.
5 For the general removal of air-conditioning ducts, refer to Ref. MP A350-A-
21-2X-XX-00ZZZ-520Z-A.
(b) Make sure that the aircraft is electrically grounded, refer to Ref. MP A350-A-24-
41-XX-00ZZZ-170Z-A.
(c) Loose the studs to remove the protective panels of the equipment bay 1000VU,
refer to Ref. Fig.BI Removal of the Protective Panels of the Equipment Bay
1000VU
1 PANEL   Item (43) Retain
1 PANEL   Item (47) Retain
3 PANEL   Item (48) Retain

### Page 19

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 19
1 PANEL   Item (49) Retain
(d) Loose the studs to remove the protective panels of the equipment bay 1200VU,
refer to Ref. Fig.BJ Removal of the Protective Panels of the Equipment Bay
1200VU
1 PANEL   Item (38) Retain
(e) Remove the avionics compartment floor panels as necessary between Frame 12
and Frame 18, refer to Ref. MP A350-A-53-12-75-00ZZZ-520Z-A.
(f) Remove the cargo-compartment floor Panel 132CAF and floor Panel 132DAF for
access, refer to Ref. MP A350-A-53-XX-XX-03ZZZ-520Z-A.
(g) If necessary, remove the air-conditioning ducts for access, refer to Ref. MP A350-
A-21-2X-XX-00ZZZ-520Z-A.
(h) If necessary, remove any ramp and their attached electrical wiring for access
between Frame 12 and Frame 22.
(i) Remove the Starter Generator Control Unit (SGCU) for access, refer to Ref. MP
A350-A-49-42-54-01ZZZ-520Z-A .
(j) Remove the tube covers and their electrical bonding connections:
Refer to Ref. Fig.BA Removal of the T ube Covers
1 Remove the tube covers item (25), item (26), item (27), item (28) and item
(29):
1 COVER ASSY   Item (25) Retain
1 COVER ASSY   Item (26) Retain
1 BRACKET   Item (27) Retain
1 COVER ASSY   Item (28) Retain
1 BRACKET   Item (29) Retain
attached with:
2 BOLT   Item (31) Retain
10 BOLT   Item (32) Retain
12 WASHER   Item (17) Discard
2 NUT-CLIP   Item (33) Discard
2 Remove the electrical bonding as shown on Ref. Fig.BA Sol.AA SHEET 2
Removal of the T ube Covers view C and view D:
1 BOLT   Item (31) Retain
1 WASHER   Item (17) Discard
1 NUT SELF-LOCKING   Item (18) Discard
3 Remove the cover assy, item (30):
1 COVER ASSY   Item (30) Retain
attached with:
2 BOLT   Item (32) Retain
2 WASHER   Item (17) Discard

### Page 20

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 20
(k) Get access to the Nose Landing Gear (NLG) bay:
1 Put an access platform in position below the NLG bay.
2 If necessary, open the NLG door for access, refer to Ref. MP A350-A-32-22-
XX-00ZZZ-397Z-A.
3 Deactivate the Nose Wheel Steering (NWS) system, refer to Ref. MP A350-
A-32-5X-XX-00ZZZ-398Z-A.

### Page 21

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-05HM2-A-001-01 Fig.BI Sol.AB SHEET 1/1
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Removal of the Protective Panels
of the Equipment Bay 1000VU Page 21
CONF ALL
Z120
FR19
FR0
FWD AVIONICS
COMPARTMENT DOOR
A
A
1000VU
(43)
(47)
(48)
(49)
ICN-A350-A-29XXP020-A-FAPE3-05HM2-A-001-01

### Page 22

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-05HLY-A-001-01 Fig.BJ Sol.AA SHEET 1/1
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Removal of the Protective Panels
of the Equipment Bay 1200VU Page 22
CONF ALL
Z120
A
FR19
FR0
FWD AVIONICS
COMPARTMENT DOOR
A
1200VU
(38)
ICN-A350-A-29XXP020-A-FAPE3-05HLY-A-001-01

### Page 23

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04NCV-A-001-01 Fig.BA Sol.AA SHEET 1/2
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Removal of the T ube Covers
Page 23
CONF ALL
C
FR0
FR20
A
FR13
FR18
A
B
(32)
(17)(29)
(27)
(26)
(25)
(28)
B
(32)
(17)
(32)
(17)
(32)
(17)(32)
(17)(31)
(17)
FR18
FR17
FR16
FR14
FR13(33)
(33)
PAX DOOR 1
ICN-A350-A-29XXP020-A-FAPE3-04NCV-A-001-01

### Page 24

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04OJU-A-001-01 Fig.BA Sol.AA SHEET 2/2
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Removal of the T ube Covers
Page 24
CONF ALL
D
(30)
(32)
(17)
C
(17)
(31)
D
(18)
ICN-A350-A-29XXP020-A-FAPE3-04OJU-A-001-01

### Page 25

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 25
C. PROCEDURE
(1) Task A350-A-29-XX-P020-01003-520A-A (A350-A-29-XX-P020-01ZZZ-520Z-A)
Remove the Yellow Hydraulic Tubes between Frame 12 and Frame 22
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
120 Work location From Frame 12 to Frame 18
130 Work location From Frame 18 to Frame 22
Manpower/Resources/Skills
Man-hours 16.00 h
Minimum Number of person 2
Elapsed Time 8.00 h
Skills Airframe
Material necessary to do the job
Consumables
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
08BAA9 Non Aqueous Cleaner -General
14SBA1 T extile - Lint free Cotton
Referenced Information
Manuals/Drawings References/Sheets
ASR A350-A-51-42-XX-01ZZZ-667Z-A
MP A350-A-29-XX-XX-02ZZZ-170Z-A
SD A350-A-06-2X-XX-01ZZZ-04CZ-AA350-A-06-3X-XX-01ZZZ-04CZ-A
CML CONSUMABLE MATERIAL LIST (CML)
Procedure
(a) Standard practices given in this procedure:
1 For identification of zones, refer to Ref. SD A350-A-06-3X-XX-01ZZZ-04CZ-A.
2 For the Frame (FR) identification, refer to Ref. SD A350-A-06-2X-XX-01ZZZ-
04CZ-A.
3 Remove and install fasteners in accordance with Ref. ASR A350-A-51-42-XX-
01ZZZ-667Z-A.
4 Put all the retained hardware in identified plastic bags and attach the bags
to the related unit.
5 Obey the general rules for removal and installation procedures for the
hydraulic systems, refer to Ref. MP A350-A-29-XX-XX-02ZZZ-170Z-A.
6 For the specification of material application codes given in this Service
Bulletin, refer to the Ref. CML.
7 Put a container in position below the component to collect the hydraulic
fluid.

### Page 26

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 26
(b) Remove the clamp, item (12):
Refer to Ref. Fig.BB Sol.AA SHEET 1 Removal of the Hydraulic T ubes and Ref.
Fig.BB Sol.AA SHEET 3 Removal of the Hydraulic T ubes view G
1 CLAMP   Item (12) Discard
1 BOLT   Item (15) Discard
1 NUT   Item (19) Discard
(c) Remove the clamps, item (11):
Refer to Ref. Fig.BB Sol.AA SHEET 1 Removal of the Hydraulic T ubes and Ref.
Fig.BB Sol.AA SHEET 2 Removal of the Hydraulic T ubes view D
4 CLAMP   Item (11) Retain
8 BOLT-HEXAGON HEAD   Item (14) Discard
8 WASHER   Item (17) Discard
(d) Remove the clamp, item (53), attached to the fitting in Frame 21:
Refer to Ref. Fig.BB Sol.AA SHEET 1 Removal of the Hydraulic T ubes and Ref.
Fig.BB Sol.AA SHEET 4 Removal of the Hydraulic T ubes view J
1 CLAMP   Item (53) Retain
2 BOLT   Item (51) Retain
2 WASHER   Item (17) Discard
(e) Remove the blocks-clamping, item (10), between frames:
Refer to Ref. Fig.BB Sol.AA SHEET 1 Removal of the Hydraulic T ubes and Ref.
Fig.BB Sol.AA SHEET 3 Removal of the Hydraulic T ubes view F
4 BLOCK-CLAMPING   Item (10) Retain
8 BOLT-HEXAGON HEAD   Item (13) Retain
8 WASHER   Item (17) Discard
8 NUT SELF-LOCKING   Item (18) Discard
(f) Remove the blocks-clamping, item (10), attached to the frame fittings:
Refer to Ref. Fig.BB Sol.AA SHEET 1 Removal of the Hydraulic T ubes and Ref.
Fig.BB Sol.AA SHEET 2 Removal of the Hydraulic T ubes view E
5 BLOCK-CLAMPING   Item (10) Retain
10 BOLT-HEXAGON HEAD   Item (13) Discard
10 WASHER   Item (17) Discard
(g) Do a pre-cut of the hydraulic tube, item (50), to the rough needed length.
Refer to Ref. Fig.BB Sol.AA SHEET 1 Removal of the Hydraulic T ubes and Ref.
Fig.BB Sol.AA SHEET 4 Removal of the Hydraulic T ubes view K
NOTE: The cutting is necessary to make the installation of the tube, item
60, possible. The accurate needed length is obtained later during the
procedure.

### Page 27

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 27
(h) Remove the hydraulic tubes and their union parts:
Refer to Ref. Fig.BB Sol.AA SHEET 1 Removal of the Hydraulic T ubes and Ref.
Fig.BB Sol.AA SHEET 2 Removal of the Hydraulic T ubes view C and Ref. Fig.BB
Sol.AA SHEET 3 Removal of the Hydraulic T ubes view H
NOTE: If necessary, use a cutting tool in order to remove any hydraulic tube.
1 TUBE V2911009700000 Item (1) Discard
1 TUBE V2911009600000 Item (2) Discard
1 TUBE V2911009100000 Item (3) Discard
1 TUBE V2911009200000 Item (4) Discard
1 TUBE V2911014800000 Item (5) Discard
1 TUBE V2911014300000 Item (6) Discard
1 TUBE V2919002500000 Item (50) Discard
5 UNION   Item (8) Discard
1 ELBOW 90 DEG   Item (9) Discard
(i) Remove the union, item (7), attached to the bulkhead, Frame 12:
Refer to Ref. Fig.BB Sol.AA SHEET 1 Removal of the Hydraulic T ubes and Ref.
Fig.BB Sol.AA SHEET 2 Removal of the Hydraulic T ubes view B
1 Disconnect the tube, item (54), from the union, item (7), on the other side
of the bulkhead, Frame 12.
1 TUBE   Item (54) Retain
NOTE: Access to the tube through NLG bay.
2 Put a blanking plug on the disconnected line end of the tube, item (54).
3 Remove the union, item (7), attached to the bulkhead, Frame 12:
NOTE: If necessary, use a cutting tool in order to remove any hydraulic
tube.
1 UNION   Item (7) Discard
3 BOLT   Item (16) Discard
3 WASHER   Item (17) Discard
3 NUT SELF-LOCKING   Item (18) Discard
NOTE: Access to the nut through NLG bay.
4 Clean the area with:
  Non Aqueous Cleaner -
General
08BAA9  
and
  T extile - Lint free Cotton14SBA1

### Page 28

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04NBX-A-002-01 Fig.BB Sol.AA SHEET 1/4
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Removal of the Hydraulic T ubes
Page 28
CONF ALL
E
E
D
G
E
C
F
E
F E
C
B
A
FWD CARGO DOOR
Z120
Z130
FR12
FR21
FR27
A
FR12
FR13
FR14
FR16
FR17
FR19
FR18
(1)
D (2)
C
F
(3)
(4)
D
(5)
C
F
H
FR20
D
(6)
T-CONNECTION
(50)
C
KFR21 J
ICN-A350-A-29XXP020-A-FAPE3-04NBX-A-002-01

### Page 29

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04OJP-A-002-01 Fig.BB Sol.AA SHEET 2/4
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Removal of the Hydraulic T ubes
Page 29
CONF ALL
(18)
(7)
B
(8)
C
TYPICAL VIEW
(14)
(17)
(11)
TYPICAL VIEW
D
(10)
E
(17)
TYPICAL VIEW
(17)
(16)
(13)
01
NOTE:
DISCONNECT THE TUBE, ITEM (54), FROM THE UNION, ITEM (7),01
ON THE OTHER SIDE OF THE BULKHEAD.
(54)
ICN-A350-A-29XXP020-A-FAPE3-04OJP-A-002-01

### Page 30

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04OJQ-A-001-01 Fig.BB Sol.AA SHEET 3/4
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Removal of the Hydraulic T ubes
Page 30
CONF ALL
(10)
(17)
(13)
TYPICAL VIEW
F
(18)
(12)
(15)
(19)
(9)
G
H
ICN-A350-A-29XXP020-A-FAPE3-04OJQ-A-001-01

### Page 31

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-06M0G-A-002-01 Fig.BB Sol.AA SHEET 4/4
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Removal of the Hydraulic T ubes
Page 31
CONF ALL
(51)
(17)
(53)
J
FWD
T-CONNECTION
FR21
(50)
180.00 mm
(7.087 in)
02
NOTE:
CUT ITEM (50) ROUGHLY AT THIS POINT TO MAKE THE INSTALLATION POSSIBLE.02
K
CUTLINE
ICN-A350-A-29XXP020-A-FAPE3-06M0G-A-002-01

### Page 32

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 32
(2) Task A350-A-29-XX-P020-01002-720A-A (A350-A-29-XX-P020-01ZZZ-720Z-A)
Install the Yellow Hydraulic Tubes between Frame 12 and Frame 22
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
120 Work location From Frame 12 to Frame 18
130 Work location From Frame 18 to Frame 22
Manpower/Resources/Skills
Man-hours 38.00 h
Minimum Number of person 2
Elapsed Time 19.00 h
Skills Airframe
Material necessary to do the job
Consumables
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
04QAC5
Coating - - Corrosion
Inhibiting Fastener Head
Protection
06AAB1 Polysulfide Sealant -General Purpose Fillet
06AAC1 Polysulfide Sealant -General Purpose Interfay
06ACA1
Polysulfide Sealant - Low
Density MultiPurpose
Brushable
06LCB1
Non Hardening Jointing
Putty - Medium T emp. Area
Chromate Free
Part kit 29P020D01R02
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
1 V2911015100000 1 TUBE
2 V2911015200000 1 TUBE
3 V2911015300000 1 TUBE
4 V2911015400000 1 TUBE
5 V2911015500000 1 TUBE
6 V2911015600000 1 TUBE
7 ABS1125-10 1 UNION
8 ABS0478-1010 5 UNION
9 NSA855007-10 1 ELBOW
12 NSA5575-8A 1 CLAMP
15 NSA5191-3-10 1 BOLT
16 ABS0114T3-9 3 BOLT
17 NAS1149C0332R 5 WASHER

### Page 33

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 33
Part kit 29P020D01R02
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
18 NAS1726C3PE 3 NUT
19 NAS509-3C 1 NUT
20 ABS0114V3-26 10 BOLT
21 NSA5191-3V9 8 BOLT
22 NAS1149D0332K 18 WASHER
23 NAS1149E0332P 8 WASHER
24 NAS1726C3E 8 NUT
60 V2919013000000 1 TUBE
61 NSA855006-10 1 UNION
Components
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
ABS0653-04 As req. (m) TAPE (1) (2)
NOTE(S)
(1): This item has a Shelf Life of less than or equal to 24 months and must be ordered
when you intend to accomplish the Service Bulletin.
(2): The components listed above are not an AIRBUS Kit, the required parts must be
ordered as necessary through the given channel.
Referenced Information
Manuals/Drawings References/Sheets
ASR
A350-A-51-24-XX-01ZZZ-667Z-A
A350-A-51-42-XX-01ZZZ-667Z-A
A350-A-51-43-XX-01ZZZ-667Z-A
A350-A-51-4X-XX-01ZZZ-667Z-A
ESP A350-A-20-33-42-01ZZZ-041Z-AA350-A-20-51-50-01ZZZ-042Z-A
MP
A350-A-20-51-50-01ZZZ-25BZ-A
A350-A-20-51-61-00ZZZ-25BZ-A
A350-A-20-51-61-08ZZZ-25BZ-A
A350-A-29-XX-XX-02ZZZ-170Z-A
SD A350-A-06-2X-XX-01ZZZ-04CZ-AA350-A-06-3X-XX-01ZZZ-04CZ-A
CML CONSUMABLE MATERIAL LIST (CML)
PMS
01-04-58
01-06-12
01-07-117
Procedure
(a) Standard practices given in this procedure:
1 For identification of zones, refer to Ref. SD A350-A-06-3X-XX-01ZZZ-04CZ-A.
2 For the Frame (FR) identification, refer to Ref. SD A350-A-06-2X-XX-01ZZZ-
04CZ-A.
3 For the specification of material application codes given in this Service
Bulletin, refer to the Ref. CML.

### Page 34

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 34
4 Remove and install fasteners in accordance with Ref. ASR A350-A-51-42-XX-
01ZZZ-667Z-A.
5 Get alternative and substitute fastener data in accordance with Ref. ASR
A350-A-51-43-XX-01ZZZ-667Z-A.
6 If alternative and substitute fasteners have to be used, you must make
sure that the associated nut/collar are compatible in accordance with Ref.
ASR A350-A-51-4X-XX-01ZZZ-667Z-A.
7 If the length of any fastener specified in this Service Bulletin does not meet
installation standards given in ASR Data Module 51-4, then a fastener of
the same specification, or an approved substitute, with a length which
meets the installation standards given in ASR Data Module 51-4 may be
used. In addition, washers may be installed for fastener grip length in
accordance with ASR Data Module 51-4.
8 T o torque tighten the electrical and mechanical connections, refer to Ref.
ESP A350-A-20-51-50-01ZZZ-042Z-A.
9 Adapt the clamp size as necessary, refer to Ref. ESP A350-A-20-33-42-
01ZZZ-041Z-A.
10 Obey the general rules for removal and installation procedures for the
hydraulic systems, refer to Ref. MP A350-A-29-XX-XX-02ZZZ-170Z-A.
11 For Standard Mechanical T orques, refer to Ref. MP A350-A-20-51-50-01ZZZ-
25BZ-A.
12 Apply sealant in accordance with Ref. ASR A350-A-51-24-XX-01ZZZ-667Z-A.
13 For the electrical bonding, refer to Ref. PMS 01-04-58 and Ref. PMS 01-07-
117.
14 Obey the general rules for installation of the hydraulic lines, refer to Ref.
MP A350-A-20-51-61-00ZZZ-25BZ-A.
15 For the swage installation of the hydraulic lines, refer to Ref. MP A350-A-20-
51-61-08ZZZ-25BZ-A.
(b) Install the union, item 7, to the bulkhead Frame 12:
Refer to Ref. Fig.BC Sol.AA SHEET 1 Installation of the Hydraulic T ubes and Ref.
Fig.BC Sol.AA SHEET 2 Installation of the Hydraulic T ubes view B
1 Apply interfay sealant on the union, item 7, using:
  Polysulfide Sealant
- General Purpose
Interfay
06AAC1  
2 Install the union, item 7:
1 UNION SWAGED ABS1125-10 Item 7
3 BOLT-HEXAGON HEAD ABS0114T3-9 Item 16
3 WASHER NAS1149C0332R Item 17
3 NUT NAS1726C3PE Item 18
NOTE: Access to the nut through NLG bay.
3 Do the bonding test, refer to Ref. Appendix ELECTRICAL BONDING/
GROUNDING CODE EXPLANATION.

### Page 35

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 35
4 Do the electrical bonding, refer to Ref. Appendix ELECTRICAL BONDING/
GROUNDING CODE EXPLANATION, use:
  Coating - - Corrosion
Inhibiting Fastener Head
Protection
04QAC5  
  Polysulfide Sealant
- Low Density
MultiPurpose Brushable
06ACA1  
5 Overcoat the fasteners except for electrical bonding points with:
  Polysulfide Sealant
- Low Density
MultiPurpose Brushable
06ACA1  
6 Apply sealant bead material around the edges of the union, item 7:
  Polysulfide Sealant -
General Purpose Fillet
06AAB1  
7 Remove the blanking plug from the line end of the tube, item (54).
8 Connect the tube, item (54), at the union, item 7, on the other side of the
bulkhead, Frame 12.
1 TUBE   Item (54) Retained
NOTE: Access to the tube through NLG bay.
(c) Connect the tubes and their unions from Frame 12 to Frame 22:
Refer to Ref. Fig.BC Sol.AA SHEET 1 Installation of the Hydraulic T ubes and Ref.
Fig.BC Sol.AA SHEET 2 Installation of the Hydraulic T ubes view C and Ref. Fig.BC
Sol.AA SHEET 3 Installation of the Hydraulic T ubes view H
NOTE: The installation of the tubes and unions start from the front and
progress towards the aft.
CAUTION: TO ENSURE THE CORRECT POSITION OF THE HYDRAULIC
TUBES, DO NOT SWAGE ANY CONNECTIONS UNTIL THE
INSTALLATION IS COMPLETED.
1 Put temporarily in position to identify the visible side of the tube.
1 TUBE V2911015100000 Item 1
1 TUBE V2911015200000 Item 2
1 TUBE V2911015300000 Item 3
1 TUBE V2911015400000 Item 4
1 TUBE V2911015500000 Item 5
1 TUBE V2911015600000 Item 6
1 TUBE ASSY V2919013000000 Item 60

### Page 36

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 36
2 Mark the end of the hydraulic tubes with the marking gage so that the
markings are visible when in position.
NOTE: These markings are to make sure the swagging of the tubes are
done correctly.
3 Connect the tubes, item 1, item 2, item 3, item 4, item 5, item 6 and item
60, and their unions from Frame 12 to Frame 22.
5 UNION-SWAGED ABS0478-1010 Item 8
1 ELBOW NSA855007-10 Item 9
(d) Install the blocks-clamping and the clamps from Frame 12 to Frame 22.
Refer to Ref. Fig.BC Sol.AA SHEET 1 Installation of the Hydraulic T ubes, Ref.
Fig.BC Sol.AA SHEET 2 Installation of the Hydraulic T ubes view D, view E, Ref.
Fig.BC Sol.AA SHEET 3 Installation of the Hydraulic T ubes view F, view G and Ref.
Fig.BC Sol.AA SHEET 4 Installation of the Hydraulic T ubes view J
NOTE: The installation of the blocks-clamping and the clamps start from
the front and progress towards the aft to make sure everything stays
aligned and without tension before swaging the tubes.
1 Install the blocks-clamping and the clamps.
9 BLOCK-CLAMPING   Item (10) Retained
10 BOLT-HEXAGON HEAD ABS0114V3-26 Item 20
18 WASHER NAS1149D0332K Item 22
8 BOLT-HEXAGON HEAD   Item (13) Retained
8 NUT NAS1726C3E Item 24
4 CLAMP   Item (11) Retained
8 BOLT NSA5191-3V9 Item 21
8 WASHER NAS1149E0332P Item 23
1 CLAMP NSA5575-8A Item 12
1 BOLT NSA5191-3-10 Item 15
1 NUT NAS509-3C Item 19
NOTE: Do not tighten the bolts to final torque value.
2 Install the clamp, item (53):
1 CLAMP   Item (53) Retained
2 BOLT   Item (51) Retained
2 WASHER NAS1149C0332R Item 17
Wet-install using:
  Non Hardening Jointing
Putty - Medium T emp.
Area Chromate Free
06LCB1  
NOTE: Do not tighten the bolts to final torque value.

### Page 37

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 37
3 Do the bonding test, refer to Ref. Appendix ELECTRICAL BONDING/
GROUNDING CODE EXPLANATION.
4 Do the electrical bonding for the clamp, item 12, refer to Ref. Appendix
ELECTRICAL BONDING/GROUNDING CODE EXPLANATION, use:
  Coating - - Corrosion
Inhibiting Fastener Head
Protection
04QAC5  
(e) Connect the tube, item 60, and the old tube, item (50), with the union, item 61.
Refer to Ref. Fig.BC Sol.AA SHEET 1 Installation of the Hydraulic T ubes, Ref.
Fig.BC Sol.AA SHEET 4 Installation of the Hydraulic T ubes view K and Ref. Fig.BC
Sol.AA SHEET 5 Installation of the Hydraulic T ubes
1 Cut the hydraulic tube, item 60, to the rough needed length.
Refer to Ref. Fig.BC Sol.AA SHEET 4 Installation of the Hydraulic T ubes view
K
NOTE: The cutting is necessary to make the installation of the tubes
possible. The accurate needed length is obtained later during the
procedure.
2 Put to the correct length and mark the cutline at the hydraulic tubes, item
(50) and item 60.
Refer to Ref. Fig.BC Sol.AA SHEET 5 Installation of the Hydraulic T ubes view
L
NOTE: Make sure that you find an accurate overlap point to ensure a
tension free installation.
3 Cut the hydraulic tube, item (50).
4 Deburr the hydraulic tube, item (50).
5 Mark the end of the hydraulic tube, item (50), with the marking gage.
6 Cut the hydraulic tube, item 60.
7 Deburr the hydraulic tube, item 60.
8 Mark the end of the hydraulic tube, item 60, with the marking gage.
9 Insert the hydraulic tubes, item (50) and item 60, refer to Ref. MP A350-A-
20-51-61-08ZZZ-25BZ-A, into:
Refer to Ref. Fig.BC Sol.AA SHEET 5 Installation of the Hydraulic T ubes view
M, view N
1 UNION NSA855006-10 Item 61
10 T orque tighten the clamp at Frame 21.
(f) Check that all the assembly is stress free and aligned.
NOTE: Make sure that tubes and clamps are correctly installed.
(g) Final torque all block-clamping and clamp bolts starting from the front to the
back.
(h) Swage all the connections from Frame 12 to Frame 22.
NOTE: The swage of the connections start from the front and progress towards
the aft.

### Page 38

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 38
(i) Check that there is no damage to the unions.
(j) Check that the markings are visible for correct swagging.
(k) Do the bonding test, when everything is swaged, refer to Ref. Appendix
ELECTRICAL BONDING/GROUNDING CODE EXPLANATION.
(l) Write the Service Bulletin number on the hydraulic tube, item (50), with a
permanent marker, refer to Ref. PMS 01-06-12.
(m) Protect the new marking, with:
As required TAPE-IDENTIFICATION ABS0653-04

### Page 39

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04NBY-A-002-01 Fig.BC Sol.AA SHEET 1/5
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the Hydraulic T ubes
Page 39
CONF ALL
E
E
D
G
E
C
F
E
F E
C
B
A
FWD CARGO DOOR
Z120
Z130
FR12
FR21
FR27
A
FR12
FR13
FR14
FR16
FR17
FR19
FR18
1
D 2
C
F
3
4
D
5
C
F
H
FR20
D
6
T-CONNECTION
(50)
C
KFR21
60
J
ICN-A350-A-29XXP020-A-FAPE3-04NBY-A-002-01

### Page 40

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04OJN-A-003-01 Fig.BC Sol.AA SHEET 2/5
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the Hydraulic T ubes
Page 40
CONF ALL
18
7
B
8
C
TYPICAL VIEW
21
23
(11)
TYPICAL VIEW
D
(10)
E
22
20
TYPICAL VIEW
17
16
17
16 _4C3M1 01
04
02
03
05
01 PROTECT WITH MATERIAL No 06ACA1 AND MATERIAL No 04QAC5.
02 APPLY INTERFAY SEALANT MATERIAL No 06AAC1.
ELECTRICAL BONDING.
NOTE:
03 TORQUE TO BETWEEN 0.189  AND 0.231 m.daN (1.394 AND 1.703 lbf.ft)
04 OVERCOAT THE FASTENERS WITH MATERIAL No 06ACA1.
05 APPLY SEALANT BEAD MATERIAL No 06AAB1 AROUND THE EDGES.
06 CONNECT THE TUBE, ITEM (54), TO THE UNION, ITEM 7, ON THE OTHER
SIDE OF THE BULKHEAD WITH TORQUE.
04
06(54)
ICN-A350-A-29XXP020-A-FAPE3-04OJN-A-003-01

### Page 41

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04OJO-A-003-01 Fig.BC Sol.AA SHEET 3/5
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the Hydraulic T ubes
Page 41
CONF ALL
(10)
22
(13)
TYPICAL VIEW
F
24
12
15
19
9
G
H
03
08
ELECTRICAL BONDING.
NOTE:
03 TORQUE TO BETWEEN 0.189  AND 0.231 m.daN (1.394 AND 1.703 lbf.ft)
07 PROTECT WITH MATERIAL No 04QAC5.
08 CLAMP POSITION INDICATED BY RED TAPE ON TUBE.
_6C2M2 07
ICN-A350-A-29XXP020-A-FAPE3-04OJO-A-003-01

### Page 42

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-06M0H-A-002-01 Fig.BC Sol.AA SHEET 4/5
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the Hydraulic T ubes
Page 42
CONF ALL
60
(50)
FR21
FR22
CUTLINE
T-CONNECTION
(51)
17
(53)
J
09
NOTE:
WET-INSTALL WITH MATERIAL No 06LCB1.09
CUT TO THE ROUGH NEEDED LENGTH, TO MAKE THE INSTALLATION POSSIBLE.10
MAKE SURE THAT YOU FIND AN ACCURATE OVERLAP POINT TO11
ENSURE A TENSION FREE INSTALLATION.
KFWD
11
10
L M
ICN-A350-A-29XXP020-A-FAPE3-06M0H-A-002-01

### Page 43

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-06M0I-A-002-01 Fig.BC Sol.AA SHEET 5/5
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the Hydraulic T ubes
Page 43
CONF ALL
N
FWD
T-CONNECTION
FR21
(50)
126 ± 1 mm
(4.961 ± 0.039 in) 12
60
L
(50)
FR21
FR22
T-CONNECTION
FWD
60
M
61
TYPICAL VIEW
N
NOTE:
ENSURE A GAP OF 5 mm (0.197 in) BETWEEN ITEM (50) AND ITEM 60 AFTER CUTTING TO ENABLE SWAGGING. 12
CUTLINE
ICN-A350-A-29XXP020-A-FAPE3-06M0I-A-002-01

### Page 44

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 44
D. PREPARATION FOR TEST
(1) Task A350-A-29-XX-P020-01001-762A-A (A350-A-29-XX-P020-01ZZZ-762Z-A)
Preparation for test
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.25 h
Minimum Number of person 1
Elapsed Time 0.25 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-29-13-75-00ZZZ-720Z-AA350-A-49-42-54-01ZZZ-720Z-A
Procedure
(a) Remove the safety clip(s) and/or tag(s) and close/unlock this (these) circuit
breaker(s) as specified after the Installation of the SGCU of the Auxiliary Power
Unit (APU), refer to Ref. MP A350-A-49-42-54-01ZZZ-720Z-A.
(b) Remove the safety clip(s) and/or tag(s) and close/unlock this (these) circuit
breaker(s) as specified after the Installation of the Yellow Hydraulic T ubes, refer
to Ref. MP A350-A-29-13-75-00ZZZ-720Z-A.
E. TEST
(1) Task A350-A-29-XX-P020-01001-320A-A (A350-A-29-XX-P020-01ZZZ-320Z-A)
Test
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 1.50 h
Minimum Number of person 2
Elapsed Time 0.75 h
Referenced Information
Manuals/Drawings References/Sheets
MP
A350-A-29-13-XX-00ZZZ-320Z-A
A350-A-29-XX-XX-00ZZZ-360Z-A
A350-A-49-42-XX-00ZZZ-320Z-A
Procedure
(a) Do the Built-In T est Equipment (BITE) test of the SGCU, refer to Ref. MP A350-A-
49-42-XX-00ZZZ-320Z-A.
(b) Do a leak check along the yellow hydraulic system between Frame 12 and Frame
22, refer to Ref. MP A350-A-29-XX-XX-00ZZZ-360Z-A.
(c) Do an operational test of the yellow hydraulic system, refer to Ref. MP A350-A-
29-13-XX-00ZZZ-320Z-A.
F. CLOSE-UP
(1) Task A350-A-29-XX-P020-01002-740A-A (A350-A-29-XX-P020-01ZZZ-740Z-A)
Close-Up

### Page 45

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 45
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 45.00 h
Minimum Number of person 2
Elapsed Time 22.50 h
Material necessary to do the job
Consumables
ITEM REFERENCE CML DESCRIPTION DRAWING SEE NOTES
04QAC5
Coating - - Corrosion
Inhibiting Fastener Head
Protection
06ACA1
Polysulfide Sealant - Low
Density MultiPurpose
Brushable
Part kit 29P020D01R02
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
17 NAS1149C0332R 15 WASHER
18 NAS1726C3PE 1 NUT
33 NSA5067-3-1 2 NUT
Referenced Information
Manuals/Drawings References/Sheets
ASR A350-A-51-42-XX-01ZZZ-667Z-A
MP
A350-A-21-2X-XX-00ZZZ-720Z-A
A350-A-29-XX-XX-02ZZZ-170Z-A
A350-A-32-22-XX-01ZZZ-397Z-A
A350-A-32-5X-XX-00ZZZ-345Z-A
A350-A-49-42-54-01ZZZ-720Z-A
A350-A-53-12-75-00ZZZ-720Z-A
A350-A-53-XX-XX-03ZZZ-720Z-A
SD A350-A-06-2X-XX-01ZZZ-04CZ-AA350-A-06-3X-XX-01ZZZ-04CZ-A
PMS 01-04-5801-07-117
Procedure
(a) Standard practices given in this procedure:
1 For identification of zones, refer to Ref. SD A350-A-06-3X-XX-01ZZZ-04CZ-A.
2 For the Frame (FR) identification, refer to Ref. SD A350-A-06-2X-XX-01ZZZ-
04CZ-A.
3 Obey the general rules for removal and installation procedures for the
hydraulic systems, refer to Ref. MP A350-A-29-XX-XX-02ZZZ-170Z-A.
4 Remove and install fasteners in accordance with Ref. ASR A350-A-51-42-XX-
01ZZZ-667Z-A.

### Page 46

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 46
5 For the general installation of air-conditioning ducts, refer to Ref. MP A350-
A-21-2X-XX-00ZZZ-720Z-A.
6 For the electrical bonding, refer to Ref. PMS 01-04-58 and Ref. PMS 01-07-
117.
(b) Make sure that the work areas are clean and clear of tools and other items of
equipment.
(c) Install the tube covers and their electrical bonding connections:
Refer to Ref. Fig.BD Installation of the T ube Covers
1 Install the cover assy, item (30):
1 COVER ASSY   Item (30) Retained
attached with:
2 BOLT   Item (32) Retained
2 WASHER NAS1149C0332R Item 17
2 Install the tube covers item (25), item (26), item (27), item (28) and item
(29):
1 COVER ASSY   Item (25) Retained
1 COVER ASSY   Item (26) Retained
1 BRACKET   Item (27) Retained
1 COVER ASSY   Item (28) Retained
1 BRACKET   Item (29) Retained
attached with:
2 BOLT   Item (31) Retained
10 BOLT   Item (32) Retained
12 WASHER NAS1149C0332R Item 17
2 NUT-CLIP NSA5067-3-1 Item 33
3 Install the electrical bonding as shown on Ref. Fig.BD Installation of the
T ube Covers:
1 BOLT   Item (31) Retained
1 WASHER NAS1149C0332R Item 17
1 NUT NAS1726C3PE Item 18
4 Do the bonding test, refer to Ref. Appendix ELECTRICAL BONDING/
GROUNDING CODE EXPLANATION.
5 Do the electrical bonding, refer to Ref. Appendix ELECTRICAL BONDING/
GROUNDING CODE EXPLANATION, use:
  Coating - - Corrosion
Inhibiting Fastener Head
Protection
04QAC5  
and

### Page 47

A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 47
  Polysulfide Sealant
- Low Density
MultiPurpose Brushable
06ACA1  
(d) Install the SGCU, refer to Ref. MP A350-A-49-42-54-01ZZZ-720Z-A.
(e) If necessary, install any ramp and their attached electrical wiring previously
removed for access between Frame 12 and Frame 22.
(f) If necessary, install any air-conditioning duct previously removed for access
between Frame 12 and Frame 22, refer to Ref. MP A350-A-21-2X-XX-00ZZZ-720Z-
A.
(g) Install the cargo-compartment floor Panel 132CAF and floor Panel 132DAF, as
necessary, refer to Ref. MP A350-A-53-XX-XX-03ZZZ-720Z-A.
(h) Install the avionics compartment floor panels as necessary between Frame 18
and Frame 12, refer to Ref. MP A350-A-53-12-75-00ZZZ-720Z-A.
(i) Install the protective panels of the equipment bay 1200VU, refer to Ref. Fig.BL
Installation of the Protective Panels of the Equipment Bay 1200VU:
1 PANEL   Item (38) Retained
(j) Install the protective panels of the equipment bay 1000VU, refer to Ref. Fig.BK
Installation of the Protective Panels of the Equipment Bay 1000VU:
1 PANEL   Item (43) Retained
1 PANEL   Item (47) Retained
3 PANEL   Item (48) Retained
1 PANEL   Item (49) Retained
(k) If opened, close access to the NLG bay:
1 Close the NLG door for access, refer to Ref. MP A350-A-32-22-XX-01ZZZ-
397Z-A.
2 Activate the NWS system, refer to Ref. MP A350-A-32-5X-XX-00ZZZ-345Z-A.
3 Remove the access platform(s).
(l) Put the aircraft back to its initial configuration.

### Page 48

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04NUS-A-002-01 Fig.BD Sol.AA SHEET 1/2
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the T ube Covers
Page 48
CONF ALL
B
(32)
17(29)
(27)
(26)
(25)
(28)
(32)
17
(32)
17
(32)
17(32)
17(31)
17
FR18
FR17
FR16
FR14
FR1333
33
FR18
FR1
COCKPIT FLOOR
FR3
A
A
FR13
Z120
ICN-A350-A-29XXP020-A-FAPE3-04NUS-A-002-01

### Page 49

A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-04NUT-A-002-01 Fig.BD Sol.AA SHEET 2/2
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the T ube Covers
Page 49
CONF ALL
C
(32)
17
18 _6C2M1 02
01 PROTECT WITH MATERIAL No 04QAC5 AND MATERIAL No 06ACA1.
02 PROTECT WITH MATERIAL No 04QAC5.
ELECTRICAL BONDING.
NOTE:
(30)
17
(31) _6C2M1 01
B
C
ICN-A350-A-29XXP020-A-FAPE3-04NUT-A-002-01

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A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-05HLZ-A-001-01 Fig.BL Sol.AA SHEET 1/1
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the Protective Panels
of the Equipment Bay 1200VU Page 50
CONF ALL
Z120
A
FR19
FR0
FWD AVIONICS
COMPARTMENT DOOR
A
1200VU
(38) 01
NOTE:
TORQUE ALL INSTALLATION FASTENERS TO BETWEEN 0.28 m.daN (2.066 lbf.ft) AND 01
0.32 m.daN (2.360 lbf.ft). ICN-A350-A-29XXP020-A-FAPE3-05HLZ-A-001-01

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A350
SERVICE BULLETIN
Figure ICN-A350-A-29XXP020-A-FAPE3-05HM3-A-001-01 Fig.BK Sol.AB SHEET 1/1
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Installation of the Protective Panels
of the Equipment Bay 1000VU Page 51
CONF ALL
Z120
FR19
FR0
FWD AVIONICS
COMPARTMENT DOOR
A
A
1000VU
(43)
(47)
(48)
(49)
01
01
01
01
NOTE:
TORQUE ALL INSTALLATION FASTENERS TO BETWEEN 0.28 m.daN (2.066 lbf.ft) AND 01
0.32 m.daN (2.360 lbf.ft). ICN-A350-A-29XXP020-A-FAPE3-05HM3-A-001-01

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A350
SERVICE BULLETIN
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 52
G. ADMINISTRATIVE
(1) Task A350-A-29-XX-P020-01001-90AA-A (A350-A-29-XX-P020-01ZZZ-90AZ-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 53

A350
SERVICE BULLETIN
APPENDIX
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 53
APPENDIX
A. ELECTRICAL BONDING/GROUNDING CODE EXPLANATION
ELECTRICAL BONDING/GROUNDING CODE EXPLANATION
For an explanation of the electrical bonding/grounding code, refer to the next page.

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A350
SERVICE BULLETIN
APPENDIX
Figure ICN-A350-A-29XXP020-A-FAPE3-04NCW-A-001-01 Fig.AB Sol.AA SHEET 1/1
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
Electrical Bonding/Grounding Code Explanation
Page 54
CONF ALL
FOR EXAMPLE
_5B4M1
ELECTRICAL BONDING / GROUNDING CODE EXPLANATION
FOR TEST METHOD, REFER TO
MP A350-A-20-51-20-XXX
(XXX DEPENDS ON THE METHOD)
FOR BONDING CLASS AND
RESISTANCE VALUE, REFER TO
ESP A350-A-20-51-20-01001-040-Z-A
FOR PROCESS CODE,
REFER TO PMS 01-04-58
FOR FURTHER INFORMATION, REFER TO PMS 01-07-117.
NOTE:
_5  B4  M1
ELECTRICAL BONDING. ICN-A350-A-29XXP020-A-FAPE3-04NCW-A-001-01

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A350
SERVICE BULLETIN
APPENDIX
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 55
B. LIST OF CONCESSIONS
LIST OF CONCESSIONS
The concessions given in the next page will be superseded after the accomplishment of this
Service Bulletin.

### Page 56

A350
SERVICE BULLETIN
APPENDIX
Figure ICN-A350-A-29XXP020-A-FAPE3-06MC2-A-001-01 Fig.AC Sol.AA SHEET 1/1
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22
List of Concessions
Page 56
CONF ALL
CONCESSION NUMBER MSN PART NUMBER DESCRIPTION
NZ-005263015 0143 V85410304000 S12 PIPES
NZ-005263005 0163 V85410304000 S12 PIPES
NZ-005263008-A 0167 V85410304000 S12 PIPES
NZ-005263197 0172 V85410304000 S12 PIPES
NZ-005263345 0178 V85410304000 S12 PIPES
NZ-005262602 0182 V85410304000 S12 PIPES
NZ-005258966-A 0183 V85410304000 S12 PIPES
NZ-005258548-A 0184 V85410304000 S12 PIPES
NZ-005262615 0185 V85410304000 S12 PIPES
NZ-005258967-A 0186 V85410304000 S12 PIPES
NZ-005262606 0187 V85410304000 S12 PIPES
NZ-005263198 0189 V85410304000 S12 PIPES
NZ-005263199 0190 V85410304000 S12 PIPES
NZ-005263200 0191 V85410304000 S12 PIPES
NZ-005263231 0192 V85410304000 S12 PIPES
NZ-005263232 0193 V85410304000 S12 PIPES
NZ-005263240 0195 V85410304000 S12 PIPES
NZ-005262966 0196 V85410304000 S12 PIPES
NZ-005263308 0197 V85410304000 S12 PIPES
NZ-005263334 0198 V85410304000 S12 PIPES
NZ-005263337 0199 V85410304000 S12 PIPES
ICN-A350-A-29XXP020-A-FAPE3-06MC2-A-001-01

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A350
SERVICE BULLETIN
APPENDIX
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 57
C. REPORTING SHEET
TITLE: HYDRAULIC POWER - GENERAL - UPGRADE LOW PRESSURE PIPE
STANDARD S11-12 FOR A350-900 (6 YEARS)
MODIFICATION No.: 113982L44225
(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.

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A350
SERVICE BULLETIN
APPENDIX
REV 00 Dec 17/21 A350-29-P020
REV 01 Jul 28/22 Page 58
D. 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
2, ROND POINT EMILE DEWOITINE
31700 BLAGNAC
FRANCE
Or via your Resident Customer Support Office.

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