# Airbus Service Bulletin A350-27-P034: Revision 01

- Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2020-0343, the docket of AD 2020-20-16. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Airbus Service Bulletin A350-27-P034](https://openairdocs.org/service-documents/airbus/a350-27-p034.md)
- Title as filed: SB A350-27-P034_r01
- Pages: 44
- PDF: https://openairdocs.org/files/sha256/00/a4/00a413dcab8b8dbcf6b9958d67545369b048bba23567a62555d8f84bd0be9cc8
- Page: https://openairdocs.org/service-documents/airbus/a350-27-p034/file/00a413dcab8b

## Text

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### Page 1

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 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: 27
TITLE: FLIGHT CONTROLS - AILERON ACTUATION AND MONITORING -
INSTALL NEW INBOARD AILERON EHA RH STD 26 FOR -900 AND
STD 004 FOR -1000 WITH NEW ELECTRONIC MODULE STD 004 B-
CONNECTOR ASSEMBLY
MODIFICATION No.:
CONF 001
114370L48280
CONF 002
114371L48281

### Page 2

A350
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 2
ATA SYSTEM: 27
TITLE: FLIGHT CONTROLS - AILERON ACTUATION AND MONITORING -
INSTALL NEW INBOARD AILERON EHA RH STD 26 FOR -900 AND
STD 004 FOR -1000 WITH NEW ELECTRONIC MODULE STD 004 B-
CONNECTOR ASSEMBLY
CONF ALL
REVISION TRANSMITTAL SHEET
This page transmits Revision No. 01 of Service Bulletin No. A350-27-P034.
A. ADDITIONAL WORK
No additional work is required by this revision.
B. REASON
Revision No. 01 issued to:
- Update the T est procedure for Option 1 in accordance with T echnical Adaptation (TA)
80602190/019/2019
- Update the reason paragraph.
NOTE: This revision satisfies the requirements of the subsequent TA issued for the related
MSNs.
TA MSNs
80602190/019/2019 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 0161 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 0207
0208 0209 0210 0211 0212 0213 0214 0215
0216 0217 0218 0219 0220 0221 0223 0224
0225 0226 0227 0228 0229 0230 0231 0232
0233 0234 0235 0236 0237 0238 0239 0240
0243 0244 0245 0247 0248 0250 0252 0254

### Page 3

A350
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 3
TA MSNs
0255 0256 0258 0259 0261 0262 0263 0264
0265 0267 0268 0269 0271 0272 0273 0276
0277 0278 0279 0280 0284 0285 0286 0287
0289 0291 0292 0293 0294 0295 0296 0297
0300 0302 0303
C. CHANGES
CONF 001
SERVICE BULLETIN
General Sentence Updated.
SUMMARY
REASON Reason paragraph updated.
APPLICABILITY Note updated.
PLANNING INFORMATION
REASON Reason paragraph updated.
COMPLIANCE
Accomplishment Timescale Accomplishment Timescale updated.
MANPOWER
T ask set A350-A-27-XX-P034-
01000-93AA-A OPTION 1 -
Modification of the EHA PN
CA67001-025 or PN CB36001-
003 in accordance with VSB on
aircraft
Man-hour updated.
MATERIAL INFORMATION
LIST OF NEW PARTS
Equipment for task set A350-
A-27-XX-P034-01000-93AA-A
OPTION 1 - Modification of the
EHA PN CA67001-025 or PN
CB36001-003 in accordance
with VSB on aircraft
Address updated.
Equipment for task set A350-
A-27-XX-P034-01000-93AB-A
OPTION 2 - Replacement of the
EHA
Address updated.
LIST OF EXISTING PARTS
Re-identified parts for task set
A350-A-27-XX-P034-01000-
93AA-A OPTION 1 - Modification
of the EHA PN CA67001-025 or
PN CB36001-003 in accordance
with VSB on aircraft
Note updated.
ACCOMPLISHMENT INSTRUCTIONS
T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA PN
CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
PREPARATION FOR TEST T est Set-up added.

### Page 4

A350
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 4
TEST T est Updated.
T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
PREPARATION FOR TEST T est Set-up added.
CONF 002
SERVICE BULLETIN
General Sentence Updated.
SUMMARY
REASON Reason paragraph updated.
APPLICABILITY Note updated.
PLANNING INFORMATION
REASON Reason paragraph updated.
COMPLIANCE
Accomplishment Timescale Accomplishment Timescale updated.
MANPOWER
T ask set A350-A-27-XX-P034-
01000-93AA-A OPTION 1 -
Modification of the EHA PN
CA67001-025 or PN CB36001-
003 in accordance with VSB on
aircraft
Man-hour updated.
MATERIAL INFORMATION
LIST OF NEW PARTS
Equipment for task set A350-
A-27-XX-P034-01000-93AA-A
OPTION 1 - Modification of the
EHA PN CA67001-025 or PN
CB36001-003 in accordance
with VSB on aircraft
Address updated.
Equipment for task set A350-
A-27-XX-P034-01000-93AB-A
OPTION 2 - Replacement of the
EHA
Address updated.
LIST OF EXISTING PARTS
Re-identified parts for task set
A350-A-27-XX-P034-01000-
93AA-A OPTION 1 - Modification
of the EHA PN CA67001-025 or
PN CB36001-003 in accordance
with VSB on aircraft
Note updated.
ACCOMPLISHMENT INSTRUCTIONS
T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA PN
CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
PREPARATION FOR TEST T est Set-up added.
TEST T est Updated.
T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
PREPARATION FOR TEST T est Set-up added.

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A350
SERVICE BULLETIN
REVISION TRANSMITTAL SHEET
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 5
CONF ALL
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: Jun 11/19
REVISION No. : 01 - Apr 08/20

### Page 6

A350
SERVICE BULLETIN
SUMMARY
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 6
ATA SYSTEM: 27
TITLE: FLIGHT CONTROLS - AILERON ACTUATION AND MONITORING -
INSTALL NEW INBOARD AILERON EHA RH STD 26 FOR -900 AND
STD 004 FOR -1000 WITH NEW ELECTRONIC MODULE STD 004 B-
CONNECTOR ASSEMBLY
SUMMARY
This summary is for information only and is not approved for modification of the aircraft.
A. MODIFICATIONS
CONF 001
MODIFICATION CLASSIFICATION
MAJOR None
MINOR 114370L48280
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 related to an Airworthiness issue has been classified by Airbus
and confirmed by EASA as minor in accordance with EU Part 21.A.91. As such, this
minor change is handled by Airbus under its Design Organisation Approval No.
EASA.21J.031.
CONF 002
MODIFICATION CLASSIFICATION
MAJOR None
MINOR 114371L48281
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 related to an Airworthiness issue has been classified by Airbus
and confirmed by EASA as minor in accordance with EU Part 21.A.91. As such, this
minor change is handled by Airbus under its Design Organisation Approval No.
EASA.21J.031.
CONF ALL
B. REASON
(1) History
On A350 program, on the electrical module solder cracks have been found leading
to Linear Variable Differential Transducer (LVDT) to Rotary Variable Differential
Transducer (RVDT) disagreement faults.
This failure has been identified on Electro-Hydrostatic Actuator (EHA) Standard (STD) -
025 for A350-900 aircraft and STD -003 for A350-1000 aircraft only.
(2) Objective/Action
This Service Bulletin consists in introducing new inboard ailerons EHA STD -026
instead of -025 with a new electrical module for A350-900 aircraft and new inboard

### Page 7

A350
SERVICE BULLETIN
SUMMARY
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 7
ailerons EHA STD -004 instead of -003 with a new electrical module for A350-1000
aircraft.
This Service Bulletin is only applicable on aircraft fitted with EHA STD -025 for A350-
900 or EHA STD -003 for A350-1000, the others EHA STDs are not concerned.
This Service Bulletin is published to advise all operators of A350-900 aircraft of the
issue of MOOG AIRCRAFT GROUP Service Bulletin No. CA67001-27-06 which modifies
the EHA electrical module assembly.
This Service Bulletin is published to advise all operators of A350-1000 aircraft of the
issue of MOOG AIRCRAFT GROUP Service Bulletin No. CB36001-27-01 which modifies
the EHA electrical module assembly.
(3) Advantages
Accomplishment of this Service Bulletin will permit to introduce a new STD -026 for
A350-900 aircraft or STD -004 for A350-1000 aircraft which resolves the issue of the
current solder joints design.
(4) Operational/Maintenance Consequences
None
C. GENERAL EVALUATION
EVALUATION TABLE
COMPLIANCE MANDATORY COST SAVING NO
A/C OPERATION
AFFECTED
NO VENDOR SB YES
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
CONF 001
No specific aircraft maintenance configuration required.
CONF 002
No specific aircraft maintenance configuration required.
CONF ALL
E. MATERIAL PRICE INFORMATION
CONF 001
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
MATERIAL PRICE INFORMATION TABLE
MATERIAL SET QTYPER A/C PRICE PER A/C MAIN PARTS
Equipment See SB See Note Electrical Module assy

### Page 8

A350
SERVICE BULLETIN
SUMMARY
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 8
NOTE: Price information to be obtained from the given supplier.
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
MATERIAL PRICE INFORMATION TABLE
MATERIAL SET QTYPER A/C PRICE PER A/C MAIN PARTS
Equipment See SB See Note Inboard aileron EHA
NOTE: Price information to be obtained from the given supplier.
CONF 002
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
MATERIAL PRICE INFORMATION TABLE
MATERIAL SET QTYPER A/C PRICE PER A/C MAIN PARTS
Equipment See SB See Note Electrical Module assy
NOTE: Price information to be obtained from the given supplier.
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
MATERIAL PRICE INFORMATION TABLE
MATERIAL SET QTYPER A/C PRICE PER A/C MAIN PARTS
Equipment See SB See Note Inboard aileron EHA
NOTE: Price information to be obtained from the given supplier.
CONF ALL
F. APPLICABILITY
This Service Bulletin is applicable to this (these) operator(s):
AAR CAL CCA CES CHH CPA CRK CSC DAL DLH ETH EVE FBU FIN FWI HVN IBE MAS MAU PAL
QTR SAA SIA TAM THA
G. CONCURRENT REQUIREMENTS
None
H. NATURE OF THE WORK
CONF 001
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
AIRCRAFT NO
EQUIPMENT YES

### Page 9

A350
SERVICE BULLETIN
SUMMARY
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 9
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
AIRCRAFT NO
EQUIPMENT YES
CONF 002
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
AIRCRAFT NO
EQUIPMENT YES
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
AIRCRAFT NO
EQUIPMENT YES
CONF ALL
I. MANPOWER
CONF 001
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
MANPOWER
TOTAL MAN-HOURS 3.50 h
ELAPSED TIME (HOURS) 3.50 h
Additional man-hours related to Vendor SB; refer to:
Modify the EHA Ref. MOOG INC (94697) VSB CA67001-27-06
Re-identify the EHA, RH side Ref. MOOG INC (94697) VSB CA67001-27-06
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
MANPOWER
TOTAL MAN-HOURS 5.25 h
ELAPSED TIME (HOURS) 5.25 h
CONF 002
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
MANPOWER
TOTAL MAN-HOURS 3.50 h
ELAPSED TIME (HOURS) 3.50 h
Additional man-hours related to Vendor SB; refer to:
Modify the EHA Ref. MOOG INC (94697) VSB CB36001-27-01
Re-identify the EHA, RH side Ref. MOOG INC (94697) VSB CB36001-27-01

### Page 10

A350
SERVICE BULLETIN
SUMMARY
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 10
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
MANPOWER
TOTAL MAN-HOURS 5.25 h
ELAPSED TIME (HOURS) 5.25 h

### Page 11

A350
SERVICE BULLETIN
SUMMARY
Figure ICN-A350-A-27XXP034-A-FAPE3-04J2I-A-001-01 SHEET 1/1
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20
General Overview
Page 11
CONF ALL
J. GENERAL OVERVIEW
CONF ALL
B
B
A
A
Z673
MODIFICATION OR REPLACEMENT OF THE
ELECTRONIC MODULE ASSEMBLY
OUTER REAR SPAR
AILERON HINGERIB2
AILERON HINGERIB1
ICN-A350-A-27XXP034-A-FAPE3-04J2I-A-001-01

### Page 12

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 12
ATA SYSTEM: 27
TITLE: FLIGHT CONTROLS - AILERON ACTUATION AND MONITORING -
INSTALL NEW INBOARD AILERON EHA RH STD 26 FOR -900 AND
STD 004 FOR -1000 WITH NEW ELECTRONIC MODULE STD 004 B-
CONNECTOR ASSEMBLY
1. PLANNING INFORMATION
A. APPLICABILITY
NOTE: Modification No. 114370L48280 is embodied before delivery on A350–941 aircraft
MSNs 0246, 0249, 0251, 0257, 0260, 0270, 0281, 0282, 0283, 0285, 0299, 0301,
0305 and subsequent.
and
Modification No. 114371L48281 is embodied before delivery on A350–1041 aircraft
MSNs 0065, 0071, 0241, 0266, 0274, 0290, 0298 and subsequent.
NOTE: This Service Bulletin is only applicable on aircraft fitted with EHA STD -025 for
A350-900 or EHA STD -003 for A350-1000, the others EHA STDs are not concerned.
(1) Models
ON A/C 0088, 0102, 0110, 0118, 0125, 0141, 0161, 0169, 0188, 0206, 0215, 0225, 0229,
0233, 0252, 0258, 0262, 0286, 0296
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, 0207-0214, 0216-0221, 0223,
0224, 0226-0228, 0230-0232, 0234-0240, 0243-0245, 0247, 0248, 0250, 0254-0256, 0259,
0261, 0263-0265, 0267-0269, 0271-0273, 0276-0280, 0284, 0287, 0289, 0291-0295, 0297,
0300, 0302, 0303
350-941
CONF ALL
(2) Applicability by MSN
0005-0058 0060-0064 0066-0070 0072-0107 0109-0130 0132-0138 0140-0151 0153-
0155 0157-0165 0167-0170 0172-0193 0195-0221 0223-0240 0243-0245 0247 0248
0250 0252 0254-0256 0258 0259 0261-0265 0267-0269 0271-0273 0276-0280 0284
0286 0287 0289 0291-0297 0300 0302 0303
(3) MSN by configuration
CONF 001
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 0089 0090 0091 0092 0093 0094 0095 0096
0097 0098 0099 0100 0101 0103 0104 0105 0106 0107 0109
0111 0112 0113 0114 0115 0116 0117 0119 0120 0121 0122
0123 0124 0126 0127 0128 0129 0130 0132 0133 0134 0135
001

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A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 13
MSN CONFIGURATION
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
0213 0214 0216 0217 0218 0219 0220 0221 0223 0224 0226
0227 0228 0230 0231 0232 0234 0235 0236 0237 0238 0239
0240 0243 0244 0245 0247 0248 0250 0254 0255 0256 0259
0261 0263 0264 0265 0267 0268 0269 0271 0272 0273 0276
0277 0278 0279 0280 0284 0287 0289 0291 0292 0293 0294
0295 0297 0300 0302 0303
CONF 002
MSN CONFIGURATION
0088 0102 0110 0118 0125 0141 0161 0169 0188 0206 0215
0225 0229 0233 0252 0258 0262 0286 0296
002
CONF ALL
(4) Configuration definition
CONF 001
Configuration 001
CONF 001 is applicable for all the aircraft on which MOD No. 109702L42886 is
embodied.
CONF 001 retrofits following modifications: 114370L48280.
CONF 002
Configuration 002
CONF 002 is applicable for all the aircraft on which MOD No. 109709L41390 is
embodied.
CONF 002 retrofits following modifications: 114371L48281.
CONF ALL
B. CONCURRENT REQUIREMENTS
None
C. REASON
(1) History
On A350 program, on the electrical module solder cracks have been found leading
to Linear Variable Differential Transducer (LVDT) to Rotary Variable Differential
Transducer (RVDT) disagreement faults.
This failure has been identified on Electro-Hydrostatic Actuator (EHA) Standard (STD) -
025 for A350-900 aircraft and STD -003 for A350-1000 aircraft only.
(2) Objective/Action
This Service Bulletin consists in introducing new inboard ailerons EHA STD -026
instead of -025 with a new electrical module for A350-900 aircraft and new inboard
ailerons EHA STD -004 instead of -003 with a new electrical module for A350-1000
aircraft.

### Page 14

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 14
This Service Bulletin is only applicable on aircraft fitted with EHA STD -025 for A350-
900 or EHA STD -003 for A350-1000, the others EHA STDs are not concerned.
This Service Bulletin is published to advise all operators of A350-900 aircraft of the
issue of MOOG AIRCRAFT GROUP Service Bulletin No. CA67001-27-06 which modifies
the EHA electrical module assembly.
This Service Bulletin is published to advise all operators of A350-1000 aircraft of the
issue of MOOG AIRCRAFT GROUP Service Bulletin No. CB36001-27-01 which modifies
the EHA electrical module assembly.
(3) Advantages
Accomplishment of this Service Bulletin will permit to introduce a new STD -026 for
A350-900 aircraft or STD -004 for A350-1000 aircraft which resolves the issue of the
current solder joints design.
(4) Operational/Maintenance Consequences
None
D. DESCRIPTION
NOTE: T o accomplish this Service Bulletin, you have two options.
T o accomplish this Service Bulletin it is necessary to:
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
CONF 001
1 Remove the Electrical Module Assembly from the Aileron EHA, RH side
CONF 002
1 Remove the Electrical Module Assembly from the Aileron EHA, RH side
CONF 001
2 Modify the EHA
CONF 002
2 Modify the EHA
CONF 001
3 Install the new Electrical Module Assembly on the Aileron EHA, RH side
CONF 002
3 Install the new Electrical Module Assembly on the Aileron EHA, RH side
CONF 001
4 Re-identify the EHA, RH side
CONF 002
4 Re-identify the EHA, RH side
CONF ALL
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
CONF 001
1 Remove the EHA, RH side
CONF 002
1 Remove the EHA, RH side
CONF 001

### Page 15

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 15
2 Install the EHA, RH side
CONF 002
2 Install the EHA, RH side
CONF ALL
E. COMPLIANCE
(1) Classification
MANDATORY: Service Bulletin must be accomplished.
(2) Accomplishment Timescale
This Service Bulletin has been classified Mandatory by the issue of an Airworthiness
Directive (AD) published by the European Aviation Safety Agency (EASA). The AD must
be used as the reference document for the mandated accomplishment timescale.
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
CONF 001
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-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
PREPARATION
Job Set-up 0.50 h
PROCEDURE
Remove the Electrical Module Assembly from the Aileron
EHA, RH side
1.00 h
Install the new Electrical Module Assembly on the Aileron
EHA, RH side
1.00 h
PREPARATION FOR TEST
T est Set-up 0.10 h
TEST
T est 0.40 h
CLOSE-UP
Close-up 0.50 h
TOTAL MAN-HOURS 3.50 h
ELAPSED TIME (HOURS) 3.50 h

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A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 16
Additional man-hours related to Vendor SB; refer to:
Modify the EHA Ref. MOOG INC (94697) VSB CA67001-27-06
Re-identify the EHA, RH side Ref. MOOG INC (94697) VSB CA67001-27-06
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
PREPARATION
Job Set-up 0.50 h
PROCEDURE
Remove the EHA, RH side 2.00 h
Install the EHA, RH side 2.00 h
PREPARATION FOR TEST
T est Set-up 0.10 h
TEST
T est 0.15 h
CLOSE-UP
Close-up 0.50 h
TOTAL MAN-HOURS 5.25 h
ELAPSED TIME (HOURS) 5.25 h
CONF 002
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-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
PREPARATION
Job Set-up 0.50 h
PROCEDURE
Remove the Electrical Module Assembly from the Aileron
EHA, RH side
1.00 h
Install the new Electrical Module Assembly on the Aileron
EHA, RH side
1.00 h
PREPARATION FOR TEST
T est Set-up 0.10 h
TEST
T est 0.40 h
CLOSE-UP
Close-up 0.50 h
TOTAL MAN-HOURS 3.50 h
ELAPSED TIME (HOURS) 3.50 h
Additional man-hours related to Vendor SB; refer to:

### Page 17

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 17
Modify the EHA Ref. MOOG INC (94697) VSB CB36001-27-01
Re-identify the EHA, RH side Ref. MOOG INC (94697) VSB CB36001-27-01
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
PREPARATION
Job Set-up 0.50 h
PROCEDURE
Remove the EHA, RH side 2.00 h
Install the EHA, RH side 2.00 h
PREPARATION FOR TEST
T est Set-up 0.10 h
TEST
T est 0.15 h
CLOSE-UP
Close-up 0.50 h
TOTAL MAN-HOURS 5.25 h
ELAPSED TIME (HOURS) 5.25 h
CONF ALL
H. WEIGHT AND BALANCE
Not changed
I. ELECTRICAL LOAD DATA
Not changed
J. REFERENCES
CONF 001
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
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-27-14-55-A1ZZZ-520Z-A
A350-A-27-14-55-A1ZZZ-720Z-A
SYSTEM DESCRIPTION (SD)
A350-A-06-2X-XX-01ZZZ-04CZ-A A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
TECHNICAL FOLLOW UP (TFU)
27.00.00.120

### Page 18

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 18
VENDOR SERVICE BULLETIN (VSB)
MOOG INC (94697) VSB CA67001-27-06
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
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-27-14-55-01ZZZ-520Z-A
A350-A-27-14-55-01ZZZ-720Z-A
SYSTEM DESCRIPTION (SD)
A350-A-06-2X-XX-01ZZZ-04CZ-A A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
TECHNICAL FOLLOW UP (TFU)
27.00.00.120
VENDOR SERVICE BULLETIN (VSB)
MOOG INC (94697) VSB CA67001-27-06
CONF 002
(1) Modification
(a) T ask set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of the EHA
PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
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-27-14-55-A1ZZZ-520Z-A
A350-A-27-14-55-A1ZZZ-720Z-A
SYSTEM DESCRIPTION (SD)
A350-A-06-2X-XX-01ZZZ-04CZ-A A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
TECHNICAL FOLLOW UP (TFU)
27.00.00.120
VENDOR SERVICE BULLETIN (VSB)
MOOG INC (94697) VSB CB36001-27-01

### Page 19

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 19
(b) T ask set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement of the EHA
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-27-14-55-01ZZZ-520Z-A
A350-A-27-14-55-01ZZZ-720Z-A
SYSTEM DESCRIPTION (SD)
A350-A-06-2X-XX-01ZZZ-04CZ-A A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
TECHNICAL FOLLOW UP (TFU)
27.00.00.120
VENDOR SERVICE BULLETIN (VSB)
MOOG INC (94697) VSB CB36001-27-01
CONF ALL
K. PUBLICATION AFFECTED
MAINTENANCE ILLUSTRATED PART DATA (MIPD)
L. INDUSTRY SUPPORT INFORMATION
CONF 001
Modification of removed equipment should be negotiated directly with the Vendor as per
instructions given in Service Bulletin No. Ref. MOOG INC (94697) VSB CA67001-27-06.
Industry support terms for the equipment must be negotiated with the equipment supplier.
Refer to Ref. MOOG INC (94697) VSB CA67001-27-06 for the industry support terms of the
Vendor Service Bulletin parts and labor.
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.
CONF 002
Modification of removed equipment should be negotiated directly with the Vendor as per
instructions given in Service Bulletin No. Ref. MOOG INC (94697) VSB CB36001-27-01.
Industry support terms for the equipment must be negotiated with the equipment supplier.
Refer to Ref. MOOG INC (94697) VSB CB36001-27-01 for the industry support terms of the
Vendor Service Bulletin parts and labor.
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 20

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 20
CONF ALL
2. MATERIAL INFORMATION
A. MATERIAL APPLICABILITY
CONF 001
Material for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of
the EHA PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
MATERIAL QTY SEE NOTES
Referenced tools See SB
Equipment See SB
Re-identified parts See SB
Interchangeable parts See SB
Spare parts See SB
Material for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement
of the EHA
MATERIAL QTY SEE NOTES
Referenced tools See SB
Equipment See SB
Referenced parts See SB
Interchangeable parts See SB
Spare parts See SB
CONF 002
Material for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification of
the EHA PN CA67001-025 or PN CB36001-003 in accordance with VSB on aircraft
MATERIAL QTY SEE NOTES
Referenced tools See SB
Equipment See SB
Re-identified parts See SB
Interchangeable parts See SB
Spare parts See SB
Material for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 - Replacement
of the EHA
MATERIAL QTY SEE NOTES
Referenced tools See SB
Equipment See SB
Referenced parts See SB
Interchangeable parts See SB
Spare parts See SB
CONF ALL
B. TOOLING

### Page 21

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 21
CONF 001
Referenced tools for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 -
Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with
VSB on aircraft
T o accomplish this Service Bulletin it is necessary to use the tools listed in the subsequent
referenced tasks:
Ref. MP A350-A-27-14-55-A1ZZZ-520Z-A
Ref. MP A350-A-27-14-55-A1ZZZ-720Z-A
T o accomplish this Service Bulletin it is necessary to use the tools listed in the subsequent
Vendor Service Bulletin:
Ref. MOOG INC (94697) VSB CA67001-27-06
Referenced tools for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
T o accomplish this Service Bulletin it is necessary to use the tools listed in the subsequent
referenced tasks:
Ref. MP A350-A-27-14-55-01ZZZ-520Z-A
Ref. MP A350-A-27-14-55-01ZZZ-720Z-A
CONF 002
Referenced tools for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 -
Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with
VSB on aircraft
T o accomplish this Service Bulletin it is necessary to use the tools listed in the subsequent
referenced tasks:
Ref. MP A350-A-27-14-55-A1ZZZ-520Z-A
Ref. MP A350-A-27-14-55-A1ZZZ-720Z-A
T o accomplish this Service Bulletin it is necessary to use the tools listed in the subsequent
Vendor Service Bulletin:
Ref. MOOG INC (94697) VSB CB36001-27-01
Referenced tools for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
T o accomplish this Service Bulletin it is necessary to use the tools listed in the subsequent
referenced tasks:
Ref. MP A350-A-27-14-55-01ZZZ-520Z-A
Ref. MP A350-A-27-14-55-01ZZZ-720Z-A
CONF ALL
C. CONSUMABLES
No consumables
D. LIST OF NEW PARTS
CONF 001
Equipment for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification
of the EHA PN CA67001-025 or PN CB36001-003 in accordance with VSB on
aircraft
Procurement address 94697 MOOG INC

### Page 22

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 22
AIRCRAFT GROUP
SENECA STREET AND JAMISON ROAD
14052 EAST AURORA NY
USA
Phone: + 1 716 652 20 00
Fax: + 1 716 687 46 61
NOTE(S)
Vendor parts are to be procured from the address given above.
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
CB84067-004
(94697) 1 MODULE (1)
NOTE(S)
(1): The components listed above are not an AIRBUS Kit, the required parts must be
ordered as necessary through the given channel.
Equipment for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
Procurement address 94697
MOOG INC
AIRCRAFT GROUP
SENECA STREET AND JAMISON ROAD
14052 EAST AURORA NY
USA
Phone: + 1 716 652 20 00
Fax: + 1 716 687 46 61
NOTE(S)
Vendor parts are to be procured from the address given above.
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
CA67001-026
(94697) 1 ACTUATOR (1)
NOTE(S)
(1): The components listed above are not an AIRBUS Kit, the required parts must be
ordered as necessary through the given channel.
CONF 002
Equipment for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 - Modification
of the EHA PN CA67001-025 or PN CB36001-003 in accordance with VSB on
aircraft
Procurement address 94697
MOOG INC
AIRCRAFT GROUP
SENECA STREET AND JAMISON ROAD
14052 EAST AURORA NY
USA
Phone: + 1 716 652 20 00
Fax: + 1 716 687 46 61
NOTE(S)
Vendor parts are to be procured from the address given above.

### Page 23

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 23
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
CB84067-004
(94697) 1 MODULE (1)
NOTE(S)
(1): The components listed above are not an AIRBUS Kit, the required parts must be
ordered as necessary through the given channel.
Equipment for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
Procurement address 94697
MOOG INC
AIRCRAFT GROUP
SENECA STREET AND JAMISON ROAD
14052 EAST AURORA NY
USA
Phone: + 1 716 652 20 00
Fax: + 1 716 687 46 61
NOTE(S)
Vendor parts are to be procured from the address given above.
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
CB36001-004
(94697) 1 ACTUATOR (1)
NOTE(S)
(1): The components listed above are not an AIRBUS Kit, the required parts must be
ordered as necessary through the given channel.
CONF 001
Referenced parts for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
T o accomplish this Service Bulletin it is necessary to use the expendable parts listed in the
subsequent referenced tasks:
Ref. MP A350-A-27-14-55-01ZZZ-720Z-A
CONF 002
Referenced parts for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
T o accomplish this Service Bulletin it is necessary to use the expendable parts listed in the
subsequent referenced tasks:
Ref. MP A350-A-27-14-55-01ZZZ-720Z-A
CONF ALL
E. LIST OF EXISTING PARTS
CONF 001
Re-identified parts for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 -
Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with
VSB on aircraft

### Page 24

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 24
ITEM NEW PART No. KEYWORD ITEM OLD PART No. SEE NOTES
CA67001-026 ACTUATOR CA67001-025 (1)
NOTE(S)
(1): Parts are re-identified in accordance with Ref. MOOG INC (94697) VSB CA67001-27-
06.
CONF 002
Re-identified parts for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 -
Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with
VSB on aircraft
ITEM NEW PART No. KEYWORD ITEM OLD PART No. SEE NOTES
CB36001-004 ACTUATOR CB36001-003 (1)
NOTE(S)
(1): Parts are re-identified in accordance with Ref. MOOG INC (94697) VSB CB36001-27-
01.
CONF 001
Interchangeable parts for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 -
Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with
VSB on aircraft
DESCRIPTION OLD PART No. NEW PART No. INT SEE NOTES
ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON (NP)
CA67001-025 CA67001-026 01 (1)
NOTE(S)
For definitions of interchangeability codes in column INT. refer to ATA (CSDD Chapter
2).
(1): The interchangeability possibilities are for new or modified parts introduced by the
accomplishment of this Service Bulletin.
Interchangeable parts for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
DESCRIPTION OLD PART No. NEW PART No. INT SEE NOTES
ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON (NP)
CA67001-025 CA67001-026 01 (1)
NOTE(S)
For definitions of interchangeability codes in column INT. refer to ATA (CSDD Chapter
2).
(1): The interchangeability possibilities are for new or modified parts introduced by the
accomplishment of this Service Bulletin.
CONF 002
Interchangeable parts for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 -
Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with
VSB on aircraft

### Page 25

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 25
DESCRIPTION OLD PART No. NEW PART No. INT SEE NOTES
ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON (NP)
CB36001-003 CB36001-004 01 (1)
NOTE(S)
For definitions of interchangeability codes in column INT. refer to ATA (CSDD Chapter
2).
(1): The interchangeability possibilities are for new or modified parts introduced by the
accomplishment of this Service Bulletin.
Interchangeable parts for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
DESCRIPTION OLD PART No. NEW PART No. INT SEE NOTES
ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON (NP)
CB36001-003 CB36001-004 01 (1)
NOTE(S)
For definitions of interchangeability codes in column INT. refer to ATA (CSDD Chapter
2).
(1): The interchangeability possibilities are for new or modified parts introduced by the
accomplishment of this Service Bulletin.
CONF 001
Spare parts for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 -
Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with
VSB on aircraft
DESCRIPTION OLD PART No. SEE NOTES
ACTUATOR ASSY-ELECTRO
HYDRAULIC,INBOARD AILERON (NP) CA67001-025 (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.
Spare parts for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
DESCRIPTION OLD PART No. SEE NOTES
ACTUATOR ASSY-ELECTRO
HYDRAULIC,INBOARD AILERON (NP) CA67001-025 (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.
CONF 002
Spare parts for task set A350-A-27-XX-P034-01000-93AA-A OPTION 1 -
Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with
VSB on aircraft

### Page 26

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 26
DESCRIPTION OLD PART No. SEE NOTES
ACTUATOR ASSY-ELECTRO
HYDRAULIC,INBOARD AILERON (NP) CB36001-003 (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.
Spare parts for task set A350-A-27-XX-P034-01000-93AB-A OPTION 2 -
Replacement of the EHA
DESCRIPTION OLD PART No. SEE NOTES
ACTUATOR ASSY-ELECTRO
HYDRAULIC,INBOARD AILERON (NP) CB36001-003 (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 27

A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 27
CONF ALL
3. ACCOMPLISHMENT INSTRUCTIONS
Task set A350-A-27-XX-P034-01000-93AA-A
OPTION 1 - Modification of the EHA PN CA67001-025 or PN CB36001-003 in accordance with VSB
on aircraft
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.
A. TASK SET ASSOCIATED INFORMATION
Task Manpower
CONF 001
TOTAL MAN-HOURS 3.50 h

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A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 28
CONF 002
TOTAL MAN-HOURS 3.50 h
CONF 001
ELAPSED TIME (HOURS) 3.50 h
CONF 002
ELAPSED TIME (HOURS) 3.50 h
CONF 001
Additional man-hours related to Vendor SB; refer to:
MOOG INC (94697) VSB CA67001-27-06
CONF 002
Additional man-hours related to Vendor SB; refer to:
MOOG INC (94697) VSB CB36001-27-01
CONF ALL
B. PREPARATION
(1) Task A350-A-27-XX-P034-01001-540A-A - Job Set-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.50 h
Minimum Number of person 1
Elapsed Time 0.50 h
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-27-14-55-A1ZZZ-520Z-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 removal of the electrical module
of the aileron EHA, refer to Ref. MP A350-A-27-14-55-A1ZZZ-520Z-A.
C. PROCEDURE
CONF 001
(1) Task A350-A-27-XX-P034-01001-520A-A - Remove the Electrical Module
Assembly from the Aileron EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673AB
Manpower/Resources/Skills
Man-hours 1.00 h
Minimum Number of person 1

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Elapsed Time 1.00 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-A1ZZZ-520Z-A
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Remove and retain the electrical module assembly (FIN 404CR2), refer to Ref. MP
A350-A-27-14-55-A1ZZZ-520Z-A.
NOTE: Retained for modification.
CONF 002
(1) Task A350-A-27-XX-P034-01002-520A-A - Remove the Electrical Module
Assembly from the Aileron EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673EB
Manpower/Resources/Skills
Man-hours 1.00 h
Minimum Number of person 1
Elapsed Time 1.00 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-A1ZZZ-520Z-A
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
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.

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3 For the identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Remove and retain the electrical module assembly (FIN 404CR2), refer to Ref. MP
A350-A-27-14-55-A1ZZZ-520Z-A.
NOTE: Retained for modification.
CONF 001
(2) Task A350-A-27-XX-P034-01001-920A-A - Modify the EHA
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673AB
Referenced Information
Manuals/Drawings References/Sheets
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
VSB MOOG INC (94697) VSB CA67001-27-06
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Modify the EHA (FIN 4CR2) in accordance with Ref. MOOG INC (94697) VSB
CA67001-27-06.
CONF 002
(2) Task A350-A-27-XX-P034-01002-920A-A - Modify the EHA
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673EB
Referenced Information
Manuals/Drawings References/Sheets
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
VSB MOOG INC (94697) VSB CB36001-27-01
Procedure
(a) Standard Practices given in this procedure:

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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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Modify the EHA (FIN 4CR2) in accordance with Ref. MOOG INC (94697) VSB
CB36001-27-01.
CONF 001
(3) Task A350-A-27-XX-P034-01001-720A-A - Install the new Electrical Module
Assembly on the Aileron EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673AB
Manpower/Resources/Skills
Man-hours 1.00 h
Minimum Number of person 1
Elapsed Time 1.00 h
Material necessary to do the job
Equipment
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
CB84067-004 1 MODULE
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-A1ZZZ-720Z-A
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Install the modified electrical module assembly (FIN 404CR2), refer to Ref. MP
A350-A-27-14-55-A1ZZZ-720Z-A.
1 After modification:
FIN 404CR2
1 MODULE ASSY-
ELECTRONIC
CB84067-003    
becomes

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FIN 404CR2
1 MODULE ASSY-
ELECTRONIC
CB84067-004  
CONF 002
(3) Task A350-A-27-XX-P034-01002-720A-A - Install the new Electrical Module
Assembly on the Aileron EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673EB
Manpower/Resources/Skills
Man-hours 1.00 h
Minimum Number of person 1
Elapsed Time 1.00 h
Material necessary to do the job
Equipment
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
CB84067-004 1 MODULE
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-A1ZZZ-720Z-A
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Install the modified electrical module assembly (FIN 404CR2), refer to Ref. MP
A350-A-27-14-55-A1ZZZ-720Z-A.
1 After modification:
FIN 404CR2
1 MODULE ASSY-
ELECTRONIC
CB84067-003    
becomes
FIN 404CR2
1 MODULE ASSY-
ELECTRONIC
CB84067-004

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CONF 001
(4) Task A350-A-27-XX-P034-02001-920A-A - Re-identify the EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673AB
Material necessary to do the job
Re-identified Part Set
ITEM NEW PART No. KEYWORD ITEM OLD PART No. SEE NOTES
CA67001-026 ACTUATOR CA67001-025 (1)
NOTE(S)
(1): Parts are re-identified in accordance with Ref. MOOG INC (94697) VSB CA67001-27-
06.
Referenced Information
Manuals/Drawings References/Sheets
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
VSB MOOG INC (94697) VSB CA67001-27-06
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Re-identify the EHA (FIN 4CR2) in accordance with Ref. MOOG INC (94697) VSB
CA67001-27-06.
FIN 4CR2
1 ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON
CA67001-025    
becomes
FIN 4CR2
1 ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON
CA67001-026

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CONF 002
(4) Task A350-A-27-XX-P034-02002-920A-A - Re-identify the EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673EB
Material necessary to do the job
Re-identified Part Set
ITEM NEW PART No. KEYWORD ITEM OLD PART No. SEE NOTES
CB36001-004 ACTUATOR CB36001-003 (1)
NOTE(S)
(1): Parts are re-identified in accordance with Ref. MOOG INC (94697) VSB CB36001-27-
01.
Referenced Information
Manuals/Drawings References/Sheets
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
VSB MOOG INC (94697) VSB CB36001-27-01
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Re-identify the EHA (FIN 4CR2) in accordance with Ref. MOOG INC (94697) VSB
CB36001-27-01.
FIN 4CR2
1 ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON
CB36001-003    
becomes
FIN 4CR2
1 ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON
CB36001-004

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CONF ALL
D. PREPARATION FOR TEST
(1) Task A350-A-27-XX-P034-01001-331A-A - Test Set-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.10 h
Minimum Number of person 1
Elapsed Time 0.10 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-A1ZZZ-720Z-A
Procedure
(a) Remove the safety clips and tags and close the circuit breakers as specified after
the installation of the electrical module of the aileron EHA, refer to Ref. MP A350-
A-27-14-55-A1ZZZ-720Z-A.
E. TEST
(1) Task A350-A-27-XX-P034-01001-320A-A - Test
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.40 h
Minimum Number of person 1
Elapsed Time 0.40 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-A1ZZZ-720Z-A
Procedure
(a) Do the test procedure as specified after the installation of the electrical module
of the aileron EHA, refer to Ref. MP A350-A-27-14-55-A1ZZZ-720Z-A.
(b) Do the rigging of the left inboard-aileron EHA, refer to Ref. MP A350-A-27-14-55-
A1ZZZ-720Z-A.
F. CLOSE-UP
(1) Task A350-A-27-XX-P034-01001-740A-A - Close-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.50 h
Minimum Number of person 1
Elapsed Time 0.50 h

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Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-A1ZZZ-720Z-A
Procedure
(a) Make sure that the work areas are clean and clear of tools and other items of
equipment.
(b) Do the close-up procedure as specified in the installation of the electrical module
of the aileron EHA, refer to Ref. MP A350-A-27-14-55-A1ZZZ-720Z-A.
(c) Put the aircraft back to its initial configuration.
G. ADMINISTRATIVE
(1) Task A350-A-27-XX-P034-01001-90AA-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.

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Task set A350-A-27-XX-P034-01000-93AB-A
OPTION 2 - Replacement of the EHA
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
CONF 001
TOTAL MAN-HOURS 5.25 h
CONF 002
TOTAL MAN-HOURS 5.25 h

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CONF 001
ELAPSED TIME (HOURS) 5.25 h
CONF 002
ELAPSED TIME (HOURS) 5.25 h
CONF ALL
B. PREPARATION
(1) Task A350-A-27-XX-P034-02001-540A-A - Job Set-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.50 h
Minimum Number of person 1
Elapsed Time 0.50 h
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-27-14-55-01ZZZ-520Z-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, Ref. MP A350-A-24-41-XX-
00ZZZ-170Z-A.
(b) Do the job set-up procedure as specified in the removal of the inboard aileron
EHA, refer to Ref. MP A350-A-27-14-55-01ZZZ-520Z-A.
C. PROCEDURE
CONF 001
(1) Task A350-A-27-XX-P034-02001-520A-A - Remove the EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673AB
Manpower/Resources/Skills
Man-hours 2.00 h
Minimum Number of person 2
Elapsed Time 2.00 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-01ZZZ-520Z-A
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A

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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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Remove the EHA (FIN 4CR2), refer to Ref. MP A350-A-27-14-55-01ZZZ-520Z-A.
FIN 4CR2
1 ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON
CA67001-025    
CONF 002
(1) Task A350-A-27-XX-P034-02002-520A-A - Remove the EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673EB
Manpower/Resources/Skills
Man-hours 2.00 h
Minimum Number of person 2
Elapsed Time 2.00 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-01ZZZ-520Z-A
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Remove the EHA (FIN 4CR2), refer to Ref. MP A350-A-27-14-55-01ZZZ-520Z-A.
FIN 4CR2
1 ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON
CB36001-003

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CONF 001
(2) Task A350-A-27-XX-P034-02001-720A-A - Install the EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673AB
Manpower/Resources/Skills
Man-hours 2.00 h
Minimum Number of person 2
Elapsed Time 2.00 h
Material necessary to do the job
Equipment
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
CA67001-026 1 ACTUATOR
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-01ZZZ-720Z-A
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Install the EHA (FIN 4CR2), refer to Ref. MP A350-A-27-14-55-01ZZZ-720Z-A.
FIN 4CR2
1 ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON
CA67001-026  
CONF 002
(2) Task A350-A-27-XX-P034-02002-720A-A - Install the EHA, RH side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
673 Access Panel 673EB
Manpower/Resources/Skills
Man-hours 2.00 h

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Minimum Number of person 2
Elapsed Time 2.00 h
Material necessary to do the job
Equipment
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
CB36001-004 1 ACTUATOR
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-01ZZZ-720Z-A
SD
A350-A-06-2X-XX-01ZZZ-04CZ-A
A350-A-06-3X-XX-01ZZZ-04CZ-A
A350-A-06-4X-XX-01ZZZ-04CZ-A
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 identification of access panels, refer to Ref. SD A350-A-06-4X-XX-
01ZZZ-04CZ-A.
(b) Install the EHA (FIN 4CR2), refer to Ref. MP A350-A-27-14-55-01ZZZ-720Z-A.
FIN 4CR2
1 ACTUATOR
ASSY-ELECTRO
HYDRAULIC,INBOARD
AILERON
CB36001-004  
CONF ALL
D. PREPARATION FOR TEST
(1) Task A350-A-27-XX-P034-02001-331A-A - Test Set-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.10 h
Minimum Number of person 1
Elapsed Time 0.10 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-01ZZZ-720Z-A
Procedure

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A350
SERVICE BULLETIN
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 42
(a) Remove the safety clips and tags and close the circuit breakers as specified after
the installation of the inboard aileron EHA, refer to Ref. MP A350-A-27-14-55-
01ZZZ-720Z-A.
E. TEST
(1) Task A350-A-27-XX-P034-02001-320A-A - Test
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.15 h
Minimum Number of person 1
Elapsed Time 0.15 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-01ZZZ-720Z-A
Procedure
(a) Do the test procedure as specified after the installation of the inboard aileron
EHA, refer to Ref. MP A350-A-27-14-55-01ZZZ-720Z-A.
F. CLOSE-UP
(1) Task A350-A-27-XX-P034-02001-740A-A - Close-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.50 h
Minimum Number of person 1
Elapsed Time 0.50 h
Referenced Information
Manuals/Drawings References/Sheets
MP A350-A-27-14-55-01ZZZ-720Z-A
Procedure
(a) Make sure that the work areas are clean and clear of tools and other items of
equipment.
(b) Do the close-up procedure as specified in the installation of the inboard aileron
EHA, refer to Ref. MP A350-A-27-14-55-01ZZZ-720Z-A.
(c) Put the aircraft back to its initial configuration.
G. ADMINISTRATIVE
(1) Task A350-A-27-XX-P034-02001-90AA-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.

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A350
SERVICE BULLETIN
APPENDIX
REV 00 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 43
APPENDIX
A. REPORTING SHEET
TITLE: FLIGHT CONTROLS - AILERON ACTUATION AND MONITORING -
INSTALL NEW INBOARD AILERON EHA RH STD 26 FOR -900 AND
STD 004 FOR -1000 WITH NEW ELECTRONIC MODULE STD 004 B-
CONNECTOR ASSEMBLY
MODIFICATION No.: 114370L48280 114371L48281
(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 Jun 11/19 A350-27-P034
REV 01 Apr 08/20 Page 44
B. 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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