# Airbus Service Bulletin A300-32-6121

Copy: No revision named ("A300-32-6121 R00"), 27 pages: PDF https://openairdocs.org/files/sha256/1a/3a/1a3a84247ae460f55d63739cf2c82a90dd515da29d340b577e6b57173f719263; text https://openairdocs.org/service-documents/airbus/a300-32-6121/file/1a3a84247ae4.md. Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2020-1113, the docket of AD 2021-11-18. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Airbus](https://openairdocs.org/service-documents/airbus.md)
- Type: Service bulletin (Service Bulletin)
- Number: A300-32-6121
- Page: https://openairdocs.org/service-documents/airbus/a300-32-6121

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

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

- [AD 2021-11-18](https://openairdocs.org/ad/2021-11-18.md), effective Jul 16, 2021: No revision named

## Text (27 pages)

Rights: © Airbus S.A.S. Filed by the FAA in regulations.gov docket FAA-2020-1113, the docket of AD 2021-11-18. Not covered by OpenAirDocs’ CC0 dedication. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
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: 32
TITLE: LANDING GEAR - MAIN GEAR - MODIFY J-PIN CONNECTING ROD
SPACER
MODIFICATION No.:
13866S22953

### Page 2

A300-600
SERVICE BULLETIN
SUMMARY
REV 00 Mar 19/20 A300-32-6121
Page 2
ATA SYSTEM: 32
TITLE: LANDING GEAR - MAIN GEAR - MODIFY J-PIN CONNECTING ROD
SPACER
SUMMARY
This summary is for information only and is not approved for modification of the aircraft.
A. MODIFICATIONS
MODIFICATION CLASSIFICATION
MAJOR None
MINOR 13866S22953
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.
B. REASON
(1) History
Three cases of cracks on Main Landing Gear (MLG) barrel/hinge arm pin have been
reported to AIRBUS. These cracks initiate on the inner diameter of the pin following an
overload event leading in the worse case to the connecting rod bushes fracture and
migration.
AIRBUS developed a solution to fix the root cause of cracks by improving outer
diameter pin corrosion protection and stopping connecting rod bushes migration.
(2) Objective/Action
This Service Bulletin is published to advise all operators of A300-600 aircraft of the
issue of SAFRAN LANDING SYSTEMS Service Bulletin No. 470-32-842 which replaces
the connecting rod spacer.
This modification consists in the modification of the spacer design in order to
introduce stops which will limit the migration of the connecting rod bushes in case of
bush fracture. The spacer is a sleeve located between the connecting rod lugs and
held in place by the connecting rod bushes.
This Service Bulletin allows operators to perform this replacement in shop through
SAFRAN LANDING SYSTEMS Service Bulletin No. 470-32-842.
(3) Advantages
The accomplishment of this Service Bulletin introduces a new design of spacer in order
to stop the bushes migration in case of a fracture.
Accomplishment of this Service Bulletin cancels the requirements of Inspection Service
Bulletin No. A300-32-6119.
(4) Operational/Maintenance Consequences
None

### Page 3

A300-600
SERVICE BULLETIN
SUMMARY
REV 00 Mar 19/20 A300-32-6121
Page 3
C. GENERAL EVALUATION
EVALUATION TABLE
COMPLIANCE MANDATORY COST SAVING NO
A/C OPERATION
AFFECTED
NO VENDOR SB YES
CANCELS INSPECTION SB YES 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
MAINTENANCE CONFIGURATION
A/C JACKING YES
E. MATERIAL PRICE INFORMATION
(1) Replacement of the Connecting Rod Spacer in Shop in accordance with VSB
(a) T ask set A300-A-32-XX-6121-01000-93AA-A Replacement of the Connecting Rod
Spacer in Shop in accordance with VSB
MATERIAL PRICE INFORMATION TABLE
MATERIAL SET QTYPER A/C PRICE PER A/C MAIN PARTS
Equipment See SB See Note Spacers
NOTE: Price information to be obtained from the given supplier.
F. APPLICABILITY
This Service Bulletin is applicable to this (these) operator(s):
14S AAW ABR AHK BCS FDX IRA IRM KAC MNB MRJ MSR QSM SMF SOP SUD TAR TNO UPS
UTP
G. CONCURRENT REQUIREMENTS
Accomplishment of this Service Bulletin requires the prior or simultaneous accomplishment
of the following Service Bulletin(s):
Service Bulletin(s) Modification(s)
Ref. SB A300-32-6120  
NOTE: Service Bulletin Ref. SB A300-32-6120 (LANDING GEAR - MAIN GEAR - CHANGE
BARREL/HINGE ARM PIN WITH NEW WET PRIMER-IMPREGNATED PIN).
H. NATURE OF THE WORK
(1) Replacement of the Connecting Rod Spacer in Shop in accordance with VSB

### Page 4

A300-600
SERVICE BULLETIN
SUMMARY
REV 00 Mar 19/20 A300-32-6121
Page 4
(a) T ask set A300-A-32-XX-6121-01000-93AA-A Replacement of the Connecting Rod
Spacer in Shop in accordance with VSB
AIRCRAFT NO
EQUIPMENT YES
I. MANPOWER
(1) Replacement of the Connecting Rod Spacer in Shop in accordance with VSB
(a) T ask set A300-A-32-XX-6121-01000-93AA-A Replacement of the Connecting Rod
Spacer in Shop in accordance with VSB
MANPOWER
TOTAL MAN-HOURS 95.00 h
ELAPSED TIME (HOURS) 16.75 h
Additional man-hours related to Vendor SB; refer to:
Remove the LH and RH MLG Connecting-
Rod Spacers in Repair Shop
Ref. SAFRAN LANDING SYSTEMS
(SAS) (F0189) VSB 470-32-842
BENCH
Install the New LH and RH MLG
Connecting-Rod Spacers in Repair Shop
Ref. SAFRAN LANDING SYSTEMS
(SAS) (F0189) VSB 470-32-842
BENCH

### Page 5

A300-600
SERVICE BULLETIN
SUMMARY
Figure ICN-A300-A-32XX6121-A-FAPE3-004QD-A-001-01 SHEET 1/1
REV 00 Mar 19/20 A300-32-6121General overview
Page 5
J. GENERAL OVERVIEW
CONF ALL
B
LH SHOWN
RH SYMMETRICAL
A
B
REPLACEMENT OF THE 
CONNECTING ROD SPACER
Z731
Z741
A
ICN-A300-A-32XX6121-A-FAPE3-004QD-A-001-01

### Page 6

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 6
ATA SYSTEM: 32
TITLE: LANDING GEAR - MAIN GEAR - MODIFY J-PIN CONNECTING ROD
SPACER
1. PLANNING INFORMATION
A. APPLICABILITY
NOTE: This modification is applicable by Service Bulletin only.
(1) Models
ON A/C 0380, 0401, 0405, 0408, 0411, 0414, 0546, 0553, 0618, 0623
B4-603
ON A/C 0464, 0505, 0521, 0525, 0532, 0558, 0563, 0584, 0603, 0608, 0626, 0632, 0643,
0694, 0696, 0699, 0701, 0707, 0709, 0713, 0715, 0719, 0721, 0723, 0725, 0727, 0732,
0741, 0744, 0746, 0749, 0754, 0763, 0764, 0773
B4-605R
ON A/C 0358, 0361, 0365, 0388, 0417
B4-622
ON A/C 0477, 0479, 0530, 0536, 0543, 0555, 0557, 0559, 0561, 0572, 0575, 0579, 0581,
0602, 0607, 0611, 0613, 0617, 0621, 0625, 0630, 0633, 0637, 0641, 0657, 0659, 0664,
0666, 0668, 0670, 0677, 0679, 0683, 0688, 0703, 0711, 0717, 0722, 0724, 0729, 0730,
0733, 0734, 0737, 0739, 0740, 0743, 0750, 0753, 0756, 0762, 0770, 0775, 0782-0788, 0797,
0836-0838
B4-622R
ON A/C 0755, 0758
C4-605R/F
ON A/C 0344
C4-620
ON A/C 0726, 0728, 0735, 0736, 0738, 0742, 0745, 0748, 0752, 0757, 0759-0761, 0766,
0768, 0769, 0771, 0772, 0774, 0777-0781, 0789-0794, 0799-0804, 0855-0860, 0870, 0871,
0873-0878
F4-605R
ON A/C 0805-0835, 0839, 0840, 0845-0854, 0861-0869, 0872
F4-622R
CONF ALL
(2) Applicability by MSN
0344 0358 0361 0365 0380 0388 0401 0405 0408 0411 0414 0417 0464 0477 0479
0505 0521 0525 0530 0532 0536 0543 0546 0553 0555 0557-0559 0561 0563 0572
0575 0579 0581 0584 0602 0603 0607 0608 0611 0613 0617 0618 0621 0623 0625
0626 0630 0632 0633 0637 0641 0643 0657 0659 0664 0666 0668 0670 0677 0679
0683 0688 0694 0696 0699 0701 0703 0707 0709 0711 0713 0715 0717 0719 0721-
0730 0732-0746 0748-0750 0752-0764 0766 0768-0775 0777-0794 0797 0799-0840
0845-0878
(3) MSN by configuration
MSN CONFIGURATION
0344 0358 0361 0365 0380 0388 0401 0405 0408 0411 0414
0417 0464 0477 0479 0505 0521 0525 0530 0532 0536 0543
0546 0553 0555 0557 0558 0559 0561 0563 0572 0575 0579
001

### Page 7

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 7
MSN CONFIGURATION
0581 0584 0602 0603 0607 0608 0611 0613 0617 0618 0621
0623 0625 0626 0630 0632 0633 0637 0641 0643 0657 0659
0664 0666 0668 0670 0677 0679 0683 0688 0694 0696 0699
0701 0703 0707 0709 0711 0713 0715 0717 0719 0721 0722
0723 0724 0725 0726 0727 0728 0729 0730 0732 0733 0734
0735 0736 0737 0738 0739 0740 0741 0742 0743 0744 0745
0746 0748 0749 0750 0752 0753 0754 0755 0756 0757 0758
0759 0760 0761 0762 0763 0764 0766 0768 0769 0770 0771
0772 0773 0774 0775 0777 0778 0779 0780 0781 0782 0783
0784 0785 0786 0787 0788 0789 0790 0791 0792 0793 0794
0797 0799 0800 0801 0802 0803 0804 0805 0806 0807 0808
0809 0810 0811 0812 0813 0814 0815 0816 0817 0818 0819
0820 0821 0822 0823 0824 0825 0826 0827 0828 0829 0830
0831 0832 0833 0834 0835 0836 0837 0838 0839 0840 0845
0846 0847 0848 0849 0850 0851 0852 0853 0854 0855 0856
0857 0858 0859 0860 0861 0862 0863 0864 0865 0866 0867
0868 0869 0870 0871 0872 0873 0874 0875 0876 0877 0878
(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: 13866S22953.
B. CONCURRENT REQUIREMENTS
Accomplishment of this Service Bulletin requires the prior or simultaneous accomplishment
of the following Service Bulletin(s):
Service Bulletin(s) Modification(s)
Ref. SB A300-32-6120  
NOTE: Service Bulletin Ref. SB A300-32-6120 (LANDING GEAR - MAIN GEAR - CHANGE
BARREL/HINGE ARM PIN WITH NEW WET PRIMER-IMPREGNATED PIN).
C. REASON
(1) History
Three cases of cracks on Main Landing Gear (MLG) barrel/hinge arm pin have been
reported to AIRBUS. These cracks initiate on the inner diameter of the pin following an
overload event leading in the worse case to the connecting rod bushes fracture and
migration.
AIRBUS developed a solution to fix the root cause of cracks by improving outer
diameter pin corrosion protection and stopping connecting rod bushes migration.
(2) Objective/Action
This Service Bulletin is published to advise all operators of A300-600 aircraft of the
issue of SAFRAN LANDING SYSTEMS Service Bulletin No. 470-32-842 which replaces
the connecting rod spacer.
This modification consists in the modification of the spacer design in order to
introduce stops which will limit the migration of the connecting rod bushes in case of
bush fracture. The spacer is a sleeve located between the connecting rod lugs and
held in place by the connecting rod bushes.

### Page 8

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 8
This Service Bulletin allows operators to perform this replacement in shop through
SAFRAN LANDING SYSTEMS Service Bulletin No. 470-32-842.
(3) Advantages
The accomplishment of this Service Bulletin introduces a new design of spacer in order
to stop the bushes migration in case of a fracture.
Accomplishment of this Service Bulletin cancels the requirements of Inspection Service
Bulletin No. A300-32-6119.
(4) Operational/Maintenance Consequences
None
D. DESCRIPTION
T o accomplish this Service Bulletin it is necessary to:
(1) Replacement of the Connecting Rod Spacer in Shop in accordance with VSB
(a) T ask set A300-A-32-XX-6121-01000-93AA-A Replacement of the Connecting Rod
Spacer in Shop in accordance with VSB
1 Remove the MLG Leg, LH Side
2 Remove the MLG Leg, RH Side
3 Remove the LH and RH MLG Connecting-Rod Spacers in Repair Shop
4 Install the New LH and RH MLG Connecting-Rod Spacers in Repair Shop
5 Install the MLG Leg, LH Side
6 Install the MLG Leg, RH Side
E. COMPLIANCE
(1) Classification
MANDATORY: Service Bulletin must be accomplished.
(2) Accomplishment Timescale
Accomplishment of this Service Bulletin must be done, whichever occurs first between
these:
- At next MLG overhaul
Or
- Within 10 years.
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. It is anticipated that the AD will confirm
the thresholds given but reference should be made to the AD for confirmation of 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

### Page 9

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 9
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) Replacement of the Connecting Rod Spacer in Shop in accordance with VSB
(a) T ask set A300-A-32-XX-6121-01000-93AA-A Replacement of the Connecting Rod
Spacer in Shop in accordance with VSB
PREPARATION
Job Set-up 0.25 h
Job Set-up for MLG Leg, LH Side 14.50 h
Job Set-up for MLG Leg, RH Side 14.50 h
PROCEDURE
Remove the MLG Leg, LH Side 12.00 h
Remove the MLG Leg, RH Side 12.00 h
Install the MLG Leg, LH Side 16.00 h
Install the MLG Leg, RH Side 16.00 h
PREPARATION FOR TEST
None
TEST
T est for MLG Leg, LH Side 2.00 h
T est for MLG Leg, RH Side 2.00 h
CLOSE-UP
Close-up for MLG Leg, LH Side 2.75 h
Close-up for MLG Leg, RH Side 2.75 h
Close-up 0.25 h
TOTAL MAN-HOURS 95.00 h
ELAPSED TIME (HOURS) 16.75 h
Additional man-hours related to Vendor SB; refer to:
Remove the LH and RH MLG Connecting-
Rod Spacers in Repair Shop
Ref. SAFRAN LANDING SYSTEMS
(SAS) (F0189) VSB 470-32-842
BENCH
Install the New LH and RH MLG
Connecting-Rod Spacers in Repair Shop
Ref. SAFRAN LANDING SYSTEMS
(SAS) (F0189) VSB 470-32-842
BENCH
NOTE: For an explanation of the man-hours and elapsed time, refer to the
Gantt Chart given in Appendix MANPOWER GANTT CHART.
H. WEIGHT AND BALANCE
Not changed
I. ELECTRICAL LOAD DATA
Not changed
J. REFERENCES

### Page 10

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 10
CONCURRENT SERVICE BULLETIN (SB)
A300-32-6120
(1) Replacement of the Connecting Rod Spacer in Shop in accordance with VSB
(a) T ask set A300-A-32-XX-6121-01000-93AA-A Replacement of the Connecting Rod
Spacer in Shop in accordance with VSB
AIRCRAFT MAINTENANCE MANUAL (AMM)
06-21-00, Page Block 001 24-00-00, Page Block 301
32-11-11, Page Block 401
ELECTRICAL STANDARD PRACTICES MANUAL (ESPM)
20-55-00
SERVICE BULLETIN (SB)
A300-32-6119
TECHNICAL FOLLOW UP (TFU)
32.11.00.023
VENDOR SERVICE BULLETIN (VSB)
SAFRAN LANDING SYSTEMS (SAS) (F0189) VSB 470-32-842
K. PUBLICATION AFFECTED
ILLUSTRATED PARTS CATALOG (IPC)
L. INDUSTRY SUPPORT INFORMATION
Modification of removed equipment should be negotiated directly with the Vendor as per
instructions given in Service Bulletin No. Ref. SAFRAN LANDING SYSTEMS (SAS) (F0189) VSB
470-32-842.
Refer to Ref. SAFRAN LANDING SYSTEMS (SAS) (F0189) VSB 470-32-842 for the industry
support terms of the Vendor Service Bulletin parts and labor.

### Page 11

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 11
2. MATERIAL INFORMATION
A. MATERIAL APPLICABILITY
Material for task set A300-A-32-XX-6121-01000-93AA-A Replacement of the
Connecting Rod Spacer in Shop in accordance with VSB
MATERIAL QTY SEE NOTES
Referenced tools See SB
Equipment See SB (1)
Re-identified parts See SB
Interchangeable parts See SB
NOTE(S)
(1): Refer to the Ref. SAFRAN LANDING SYSTEMS (SAS) (F0189) VSB 470-32-842 for the
equipment modification sales terms.
B. TOOLING
Referenced tools for task set A300-A-32-XX-6121-01000-93AA-A Replacement of
the Connecting Rod Spacer in Shop in accordance with VSB
T o accomplish this Service Bulletin it is necessary to use the tools listed in the subsequent
referenced tasks:
Ref. AMM 32-11-11, Page Block 401
T o accomplish this Service Bulletin it is necessary to use the tools listed in the subsequent
referenced VSB:
Ref. SAFRAN LANDING SYSTEMS (SAS) (F0189) VSB 470-32-842
C. CONSUMABLES
No consumables
D. LIST OF NEW PARTS
Equipment for task set A300-A-32-XX-6121-01000-93AA-A Replacement of the
Connecting Rod Spacer in Shop in accordance with VSB
Procurement address F0189
SAFRAN LANDING SYSTEMS (SAS)
INOVEL PARC SUD – 7, RUE GENERAL VALERIE ANDRE
78140 VELIZY - VILLACOUBLAY
FRANCE
Phone: +33(0) 1 46 29 81 00
Internet: www.safran-landing-systems.com
NOTE(S)
Vendor parts are to be procured from the address given above.
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
D57756-1 (F0189) 2 SPACER (1) (2)
NOTE(S)
(1): The components listed above are not an AIRBUS Kit, the required parts must be
ordered as necessary through the given channel.
(2): ”Spacer” in the above list refers to “Connecting Rod Spacer” as mentioned in the rest
of the document.
E. LIST OF EXISTING PARTS
Re-identified parts for task set A300-A-32-XX-6121-01000-93AA-A Replacement of
the Connecting Rod Spacer in Shop in accordance with VSB

### Page 12

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 12
ITEM NEW PART No. KEYWORD ITEM OLD PART No. SEE NOTES
D22497010-12 LEG D22497010-11 (1)
D22497011-5 LEG D22497011-4 (1)
D22497015-11 LEG D22497015-10 (1)
D22497020-10 LEG D22497020-9 (1)
D22497025-11 LEG D22497025-10 (1)
D22497030-7 LEG D22497030-6 (1)
D22497040-4 LEG D22497040-3 (1)
D22497145-7 LEG D22497145-6 (1)
D22497150-7 LEG D22497150-6 (1)
D22497250-6 LEG D22497250-5 (1)
D22498010-12 LEG D22498010-11 (1)
D22498011-5 LEG D22498011-4 (1)
D22498015-11 LEG D22498015-10 (1)
D22498020-10 LEG D22498020-9 (1)
D22498025-11 LEG D22498025-10 (1)
D22498030-7 LEG D22498030-6 (1)
D22498040-4 LEG D22498040-3 (1)
D22498145-7 LEG D22498145-6 (1)
D22498150-7 LEG D22498150-6 (1)
D22498250-6 LEG D22498250-5 (1)
D23243000-7 LEG D23243000-6 (1)
D23244000-7 LEG D23244000-6 (1)
NOTE(S)
(1): Parts are re-identified in accordance with Ref. SAFRAN LANDING SYSTEMS (SAS)
(F0189) VSB 470-32-842.
Interchangeable parts for task set A300-A-32-XX-6121-01000-93AA-A
Replacement of the Connecting Rod Spacer in Shop in accordance with VSB
DESCRIPTION OLD PART No. NEW PART No. INT SEE NOTES
LEG ASSY-MLG D22497010-11 D22497010-12 01 (1) (2)
LEG ASSY-MLG D22497011-4 D22497011-5 01 (1) (2)
LEG ASSY-MLG D22497015-10 D22497015-11 01 (1) (2)
LEG ASSY-MLG D22497020-9 D22497020-10 01 (1) (2)
LEG ASSY-MLG D22497025-10 D22497025-11 01 (1) (2)
LEG ASSY-MLG D22497030-6 D22497030-7 01 (1) (2)
LEG ASSY-MLG D22497040-3 D22497040-4 01 (1) (2)
LEG ASSY-MLG D22497145-6 D22497145-7 01 (1) (2)
LEG ASSY-MLG D22497150-6 D22497150-7 01 (1) (2)
LEG ASSY-MLG D22497250-5 D22497250-6 01 (1) (2)
LEG ASSY-MLG D22498010-11 D22498010-12 01 (1) (2)
LEG ASSY-MLG D22498011-4 D22498011-5 01 (1) (2)
LEG ASSY-MLG D22498015-10 D22498015-11 01 (1) (2)

### Page 13

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 13
DESCRIPTION OLD PART No. NEW PART No. INT SEE NOTES
LEG ASSY-MLG D22498020-9 D22498020-10 01 (1) (2)
LEG ASSY-MLG D22498025-10 D22498025-11 01 (1) (2)
LEG ASSY-MLG D22498030-6 D22498030-7 01 (1) (2)
LEG ASSY-MLG D22498040-3 D22498040-4 01 (1) (2)
LEG ASSY-MLG D22498145-6 D22498145-7 01 (1) (2)
LEG ASSY-MLG D22498150-6 D22498150-7 01 (1) (2)
LEG ASSY-MLG D22498250-5 D22498250-6 01 (1) (2)
LEG ASSY-MLG D23243000-6 D23243000-7 01 (1) (2)
LEG ASSY-MLG D23244000-6 D23244000-7 01 (1) (2)
SPACER D57756 D57756-1 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.
(2): One-way Interchangeable but two way Interchangeable with conditions:
- The MLG Post-MOD Part Number can replace the MLG Pre-MOD Part Number.
- The MLG Pre-MOD Part Number can replace the MLG Post-MOD Part Number
provided that repetitive inspections as per Inspection Service Bulletin (ISB)
Ref. SB A300-32-6119 is performed and provided that the compliance time of
the AD that will be issued to mandate the Post-MOD is not overdue.

### Page 14

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 14
3. ACCOMPLISHMENT INSTRUCTIONS
Task set A300-A-32-XX-6121-01000-93AA-A
Replacement of the Connecting Rod Spacer in Shop in accordance with VSB
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. ESPM 20-55-00.
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: Discarded parts must be managed at the operator's discretion.
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
Maintenance Configuration
A/C jacking
Task Manpower
TOTAL MAN-HOURS 95.00 h

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A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 15
ELAPSED TIME (HOURS) 16.75 h
Additional man-hours related to Vendor SB; refer to:
SAFRAN LANDING SYSTEMS (SAS) (F0189) VSB 470-32-842
B. PREPARATION
(1) Task A300-A-32-XX-6121-05001-540A-A - Job Set-up
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
AMM 24-00-00, Page Block 301
Procedure
NOTE: For the basic Aircraft configuration, refer to AMM Chapter “Introduction -
Aircraft status for maintenance" in Manual Front Matter section.
(a) Make sure that the aircraft is electrically grounded, refer to Ref. AMM 24-00-00,
Page Block 301.
(2) Task A300-A-32-XX-6121-01001-540A-A - Job Set-up for MLG Leg, LH Side
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 14.50 h
Minimum Number of person 5
Elapsed Time 5.75 h
Referenced Information
Manuals/Drawings References/Sheets
AMM 32-11-11, Page Block 401
Procedure
(a) Do the job set-up procedure as specified in the removal of the LH main gear leg,
refer to Ref. AMM 32-11-11, Page Block 401.
(3) Task A300-A-32-XX-6121-02001-540A-A - Job Set-up for MLG Leg, RH Side
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 14.50 h
Minimum Number of person 5
Elapsed Time 5.75 h

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A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 16
Referenced Information
Manuals/Drawings References/Sheets
AMM 32-11-11, Page Block 401
Procedure
(a) Do the job set-up procedure as specified in the removal of the RH main gear leg,
refer to Ref. AMM 32-11-11, Page Block 401.
C. PROCEDURE
(1) Task A300-A-32-XX-6121-03001-540A-A - Remove the MLG Leg, LH Side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
731
Manpower/Resources/Skills
Man-hours 12.00 h
Minimum Number of person 4
Elapsed Time 3.00 h
Skills Airframe
Referenced Information
Manuals/Drawings References/Sheets
AMM 06-21-00, Page Block 00132-11-11, Page Block 401
Procedure
(a) Standard Practices given in this procedure:
1 For the identification of zones, refer to Ref. AMM 06-21-00, Page Block 001.
2 T ag all the parts you must remove and retain to make the subsequent
installation easier.
(b) Remove and retain the LH main gear leg, refer to Ref. AMM 32-11-11, Page Block
401.
(2) Task A300-A-32-XX-6121-04001-540A-A - Remove the MLG Leg, RH Side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
741
Manpower/Resources/Skills
Man-hours 12.00 h
Minimum Number of person 4
Elapsed Time 3.00 h
Skills Airframe

### Page 17

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 17
Referenced Information
Manuals/Drawings References/Sheets
AMM 06-21-00, Page Block 00132-11-11, Page Block 401
Procedure
(a) Standard Practices given in this procedure:
1 For the identification of zones, refer to Ref. AMM 06-21-00, Page Block 001.
2 T ag all the parts you must remove and retain to make the subsequent
installation easier.
(b) Remove and retain the RH main gear leg, refer to Ref. AMM 32-11-11, Page Block
401.
(3) Task A300-A-32-XX-6121-01001-520A-C - Remove the LH and RH MLG
Connecting-Rod Spacers in Repair Shop
Job Set-Up Information
Referenced Information
Manuals/Drawings References/Sheets
VSB SAFRAN LANDING SYSTEMS (SAS) (F0189)VSB 470-32-842
Procedure
(a) Remove the connecting rod spacer from the LH barrel and RH barrel, in
accordance with Ref. SAFRAN LANDING SYSTEMS (SAS) (F0189) VSB 470-32-842:
2 SPACER D57756   Discard
(b) Do a detailed visual inspection of the LH and RH barrel/hinge arm pins and
connecting rod bushes in accordance with Ref. SAFRAN LANDING SYSTEMS
(SAS) (F0189) VSB 470-32-842 and associated corrective actions (depending on
inspection results).
(4) Task A300-A-32-XX-6121-01001-720A-C - Install the New LH and RH MLG
Connecting-Rod Spacers in Repair Shop
Job Set-Up Information
Material necessary to do the job
Equipment
ITEM PART No. QTY (UM) KEYWORD DRAWING SEE NOTES
D57756-1 2 SPACER (1) (2)
NOTE(S)
(1): The components listed above are not an AIRBUS Kit, the required parts must be
ordered as necessary through the given channel.
(2): ”Spacer” in the above list refers to “Connecting Rod Spacer” as mentioned in the rest
of the document.
Re-identified Part Set
ITEM NEW PART No. KEYWORD ITEM OLD PART No. SEE NOTES
D22497010-12 LEG D22497010-11
D22497011-5 LEG D22497011-4

### Page 18

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 18
Re-identified Part Set
ITEM NEW PART No. KEYWORD ITEM OLD PART No. SEE NOTES
D22497015-11 LEG D22497015-10
D22497020-10 LEG D22497020-9
D22497025-11 LEG D22497025-10
D22497030-7 LEG D22497030-6
D22497040-4 LEG D22497040-3
D22497145-7 LEG D22497145-6
D22497150-7 LEG D22497150-6
D22497250-6 LEG D22497250-5
D22498010-12 LEG D22498010-11
D22498011-5 LEG D22498011-4
D22498015-11 LEG D22498015-10
D22498020-10 LEG D22498020-9
D22498025-11 LEG D22498025-10
D22498030-7 LEG D22498030-6
D22498040-4 LEG D22498040-3
D22498145-7 LEG D22498145-6
D22498150-7 LEG D22498150-6
D22498250-6 LEG D22498250-5
D23243000-7 LEG D23243000-6
D23244000-7 LEG D23244000-6
Referenced Information
Manuals/Drawings References/Sheets
VSB SAFRAN LANDING SYSTEMS (SAS) (F0189)VSB 470-32-842
Procedure
(a) Install the new connecting rod spacer on the LH barrel and RH barrel, in
accordance with Ref. SAFRAN LANDING SYSTEMS (SAS) (F0189) VSB 470-32-842:
2 SPACER D57756-1  
(b) Re-identify the LH MLG leg and barrel in accordance with Ref. SAFRAN LANDING
SYSTEMS (SAS) (F0189) VSB 470-32-842.
1 LEG ASSY-MLG D22497010-11    
becomes
1 LEG ASSY-MLG D22497010-12  
or
1 LEG ASSY-MLG D22497011-4    
becomes
1 LEG ASSY-MLG D22497011-5  
or
1 LEG ASSY-MLG D22497015-10    
becomes

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A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 19
1 LEG ASSY-MLG D22497015-11  
or
1 LEG ASSY-MLG D22497020-9    
becomes
1 LEG ASSY-MLG D22497020-10  
or
1 LEG ASSY-MLG D22497025-10    
becomes
1 LEG ASSY-MLG D22497025-11  
or
1 LEG ASSY-MLG D22497030-6    
becomes
1 LEG ASSY-MLG D22497030-7  
or
1 LEG ASSY-MLG D22497040-3    
becomes
1 LEG ASSY-MLG D22497040-4  
or
1 LEG ASSY-MLG D22497145-6    
becomes
1 LEG ASSY-MLG D22497145-7  
or
1 LEG ASSY-MLG D22497150-6    
becomes
1 LEG ASSY-MLG D22497150-7  
or
1 LEG ASSY-MLG D22497250-5    
becomes
1 LEG ASSY-MLG D22497250-6  
or
1 LEG ASSY-MLG D23243000-6    
becomes
1 LEG ASSY-MLG D23243000-7  
(c) Re-identify the RH MLG leg and barrel in accordance with Ref. SAFRAN LANDING
SYSTEMS (SAS) (F0189) VSB 470-32-842.
1 LEG ASSY-MLG D22498010-11    
becomes
1 LEG ASSY-MLG D22498010-12  
or
1 LEG ASSY-MLG D22498011-4    
becomes

### Page 20

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 20
1 LEG ASSY-MLG D22498011-5  
or
1 LEG ASSY-MLG D22498015-10    
becomes
1 LEG ASSY-MLG D22498015-11  
or
1 LEG ASSY-MLG D22498020-9    
becomes
1 LEG ASSY-MLG D22498020-10  
or
1 LEG ASSY-MLG D22498025-10    
becomes
1 LEG ASSY-MLG D22498025-11  
or
1 LEG ASSY-MLG D22498030-6    
becomes
1 LEG ASSY-MLG D22498030-7  
or
1 LEG ASSY-MLG D22498040-3    
becomes
1 LEG ASSY-MLG D22498040-4  
or
1 LEG ASSY-MLG D22498145-6    
becomes
1 LEG ASSY-MLG D22498145-7  
or
1 LEG ASSY-MLG D22498150-6    
becomes
1 LEG ASSY-MLG D22498150-7  
or
1 LEG ASSY-MLG D22498250-5    
becomes
1 LEG ASSY-MLG D22498250-6  
or
1 LEG ASSY-MLG D23244000-6    
becomes
1 LEG ASSY-MLG D23244000-7

### Page 21

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REV 00 Mar 19/20 A300-32-6121
Page 21
(5) Task A300-A-32-XX-6121-01001-740A-A - Install the MLG Leg, LH Side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
731
Manpower/Resources/Skills
Man-hours 16.00 h
Minimum Number of person 4
Elapsed Time 4.00 h
Skills Airframe
Referenced Information
Manuals/Drawings References/Sheets
AMM 06-21-00, Page Block 00132-11-11, Page Block 401
Procedure
(a) Standard Practices given in this procedure:
1 For the identification of zones, refer to Ref. AMM 06-21-00, Page Block 001.
(b) Install the LH main gear leg, refer to Ref. AMM 32-11-11, Page Block 401.
(6) Task A300-A-32-XX-6121-02001-740A-A - Install the MLG Leg, RH Side
Job Set-Up Information
Working Area
Impacted Zone Access / Work Location
741
Manpower/Resources/Skills
Man-hours 16.00 h
Minimum Number of person 4
Elapsed Time 4.00 h
Skills Airframe
Referenced Information
Manuals/Drawings References/Sheets
AMM 06-21-00, Page Block 00132-11-11, Page Block 401
Procedure
(a) Standard Practices given in this procedure:
1 For the identification of zones, refer to Ref. AMM 06-21-00, Page Block 001.
(b) Install the RH main gear leg, refer to Ref. AMM 32-11-11, Page Block 401.
D. PREPARATION FOR TEST
None

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A300-600
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Page 22
E. TEST
(1) Task A300-A-32-XX-6121-01001-300A-A - Test for MLG Leg, LH Side
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 2.00 h
Minimum Number of person 1
Elapsed Time 2.00 h
Referenced Information
Manuals/Drawings References/Sheets
AMM 32-11-11, Page Block 401
Procedure
(a) Do the test procedure as specified after the installation of the LH main gear leg,
refer to Ref. AMM 32-11-11, Page Block 401.
(2) Task A300-A-32-XX-6121-02001-300A-A - Test for MLG Leg, RH Side
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 2.00 h
Minimum Number of person 1
Elapsed Time 2.00 h
Referenced Information
Manuals/Drawings References/Sheets
AMM 32-11-11, Page Block 401
Procedure
(a) Do the test procedure as specified after the installation of the RH main gear leg,
refer to Ref. AMM 32-11-11, Page Block 401.
F. CLOSE-UP
(1) Task A300-A-32-XX-6121-03001-740A-A - Close-up for MLG Leg, LH Side
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 2.75 h
Minimum Number of person 5
Elapsed Time 1.50 h
Referenced Information
Manuals/Drawings References/Sheets
AMM 32-11-11, Page Block 401
Procedure

### Page 23

A300-600
SERVICE BULLETIN
REV 00 Mar 19/20 A300-32-6121
Page 23
(a) Do the Close-up procedure as specified after the installation of the LH main gear
leg, refer to Ref. AMM 32-11-11, Page Block 401.
(2) Task A300-A-32-XX-6121-04001-740A-A - Close-up for MLG Leg, RH Side
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 2.75 h
Minimum Number of person 5
Elapsed Time 1.50 h
Referenced Information
Manuals/Drawings References/Sheets
AMM 32-11-11, Page Block 401
Procedure
(a) Do the Close-up procedure as specified after the installation of the RH main gear
leg, refer to Ref. AMM 32-11-11, Page Block 401.
(3) Task A300-A-32-XX-6121-05001-740A-A - Close-up
Job Set-Up Information
Manpower/Resources/Skills
Man-hours 0.25 h
Minimum Number of person 1
Elapsed Time 0.25 h
Procedure
(a) Make sure that the work areas are clean and clear of tools and other items of
equipment.
(b) Put the aircraft back to its initial configuration.
G. ADMINISTRATIVE
(1) Task A300-A-32-XX-6121-01001-90AA-A - Administrative
Procedure
Confirm in the applicable aircraft records that you have completed all the work defined
in this Service Bulletin task set as required.

### Page 24

A300-600
SERVICE BULLETIN
APPENDIX
REV 00 Mar 19/20 A300-32-6121
Page 24
APPENDIX
A. MANPOWER GANTT CHART
Manpower Gantt Chart
For an explanation of the man-hours and elapsed time, refer to the next page(s).

### Page 25

A300-600
SERVICE BULLETIN
APPENDIX
Figure ICN-A300-A-32XX6121-A-FAPE3-004QE-A-005-01 SHEET 1/1
REV 00 Mar 19/20 A300-32-6121Manpower Gantt Chart
Page 25
CONF ALL
ELAPSED TIME ASSUMPTION SERVICE BULLETIN No A300-32-6121
SB ELAPSED TIME
(HOURS)
MH ET/SSTEPS
MH
ET/S:
PER
MANHOURS
ELAPSED TIME PER STEP
NUMBER OF PERSONS
01
02
THIS CHART IS ONLY A PROPOSAL.
OPERATORS MAY DETERMINE THAT ANOTHER WAY
TO DO THE WORK IS MORE SUITABLE FOR THEM.
01
02
NOTE:
PER
:
:
IF A VSB IS INVOLVED, THE ASSOCIATED MANHOURS
ARE NOT REFLECTED IN THIS GANTT CHART.
JOB SET-UP
JOB SET-UP FOR MLG LEG, LH SIDE
JOB SET-UP FOR MLG LEG, RH SIDE
REMOVE THE MLG LEG, LH SIDE
REMOVE THE MLG LEG, RH SIDE
REMOVE THE LH AND RH MLG CONNECTING-ROD
INSTALL THE NEW LH AND RH MLG
INSTALL THE MLG LEG, LH SIDE
INSTALL THE MLG LEG, RH SIDE
TEST FOR MLG LEG, LH SIDE
TEST FOR MLG LEG, RH SIDE
CLOSE-UP FOR MLG LEG, LH SIDE
CLOSE-UP FOR MLG LEG, RH SIDE
CLOSE-UP
SPACERS IN REPAIR SHOP
CONNECTING-ROD SPACERS IN REPAIR SHOP
TOTAL MANHOURS
SB ELAPSED TIME
95.00
16.75
0.25 1
14.50 5
14.50 5
12.00 4
12.00 4
16.00
16.00
2.00 1
2.00
2.75
2.75
0.25
4
4
1
1
5
5
0.25
5.75
5.75
3.00
3.00
4.00
4.00
2.00
2.00
1.50
1.50
0.25
0 1 2 3 4 5 6 7 8 9 10
REFER TO VSB
REFER TO VSB
11 12 13 14 15 16
ICN-A300-A-32XX6121-A-FAPE3-004QE-A-005-01

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A300-600
SERVICE BULLETIN
APPENDIX
REV 00 Mar 19/20 A300-32-6121
Page 26
B. REPORTING SHEET
TITLE: LANDING GEAR - MAIN GEAR - MODIFY J-PIN CONNECTING ROD
SPACER
MODIFICATION No.: 13866S22953
(1) SB Reporting status
This Service Bulletin will only be incorporated into affected customized Maintenance
and Flight Operations Products if it is duly reported to Airbus.
(2) GENERAL information
The SB Reporting policy is published in ISI 00.00.00135. This document provides
information regarding: the SB Reporting means and benefits, the update of
customized Maintenance Products and customized Flight Operations Products.
If this Service Bulletin has an operational impact, refer to paragraph "Flight Operations
Products" for further information on the update of affected Flight Operations Products.
(3) SB Reporting procedure
Standard practice to report SB is to use the online reporting application on
AirbusWorld.
Refer to ISI 00.00.00179:
- For complete information on reporting means to Airbus, Question 2 "What are
the standard practices for SB Reporting?"
- If this SB requires previous or simultaneous accomplishment of other SBs,
Question 3 "What about the reporting of prerequisite Service Bulletins?"
NOTE: ISI 00.00.00179 covers all the frequently asked questions about SB Reporting.
It is revised on a regular basis.

### Page 27

A300-600
SERVICE BULLETIN
APPENDIX
REV 00 Mar 19/20 A300-32-6121
Page 27
C. QUALITY PERCEPTION FORM
Use this form to tell us what is your perception of the quality of this Service Bulletin.
The reported data that you provide us will be used to analyse areas of difficulties and to
take corrective action to further improve the quality of our Service Bulletin.
We thank you for the time you have taken in completing this form.
Quality rating of this SB 4 3 2 1
Quality rating of the Accomplishment Instructions 4 3 2 1
Quality rating of the Illustrations 4 3 2 1
Is this SB easy to understand ? Y / N
NOTE: Please rate on a scale of 1 to 4, with 4 being the highest score
If you have difficulties in the accomplishment of this SB please quote below the area(s) and
give a short description of the issue.
Planning Material Instructions
X Applicability X T ooling X Preparation
X Reason X List of Materials
Operator Supplied
X Mod/Inspection
X Manpower X Kit content X T est
X References X Re-identification X Close-up
X Publication X Illustrations
X Industry Support
Comments :
Operator : Date :
Name/Title
Please return this form to :
AIRBUS
2, ROND POINT EMILE DEWOITINE
31700 BLAGNAC
FRANCE
Or via your Resident Customer Support Office.

---
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