7 DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page : 1 of 

Printed in FRANCE © AIRBUS, 2007 All rights reserved

This summary is for information only

and is not approved for modification of the aircraf

MANDATORY MANDATORY MAND

ATA SYSTEM : 57

TITLE : WINGS - MAIN LANDING GEAR ATTACHMENT - INSPECTION OF THE M

BEARING FORWARD LUG

MODIFICATION No. : None

REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES

During routine maintenance, a crack has been found visually in th

of the MLG rib 5 aft bearing attachment on two A310 in-service ai

concerned aircraft had accumulated 24,000 Flight Cycles (FC) and 

the time of finding (Refer to OIT 999.0115/06).

In both cases the cracks extended through the entire thickness of 

lug. The examination of the cracked ribs has confirmed that the cr

due to the presence of pitting corrosion in the forward lug holes

corner crack sites were also identified within the corroded regio

the crack. Also on both aircraft medium to heavy corrosion was fo

forward lugs on the opposite wing after removal of the bushes.

As an interim measure the Alert Service Bulletin (ASB) A300-57A02

to introduce a repetitive Detailed Visual Inspection (DVI) of the 

the MLG Rib 5 aft bearing attachment.

This Inspection Service Bulletin introduces a repetitive inspecti

detect a crack in the forward lug of the RH and LH MLG Rib 5 aft 

attachment.

Operators now have the choice to perform an ultrasonic inspection 

The ultrasonic inspection will detect any crack at an early stage 

risk of extensive repairs. This earlier crack detection is not pos

DVI.

If no crack is found the operator has the option to embody the mo

Service Bulletin A300-57-0249 (Mod No. 13348H5689) or to perform 

inspections. The embodiment of Service Bulletin A300-57-0249 (Mod 

13348H5689) is strongly recommended and will cancel the inspectio

of this Service Bulletin.
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

The repeat inspections will make sure that any crack in the inspe

the forward lug of the MLG rib 5 aft bearing attachment will be i

EFFECTIVITY

This Service Bulletin is applicable to this (these) operator(s) :

001 60W A2S ABR AFG BCS BLM DHL F2I FLM IAC IRM KZU MNB MSR NTR O

TNO TSY

CONCURRENT REQUIREMENTS

It is recommended that this Service Bulletin can be done at the s

Service Bulletin No. A300-57-0212

REFERENCES/REPERCUSSIONS

TFU : 57.51.34.004

OEB : None

AOT : None

SIL : None

LIFE LIMIT : None

LINE MAINTENANCE AFFECTED : No

OTHERS : OIT SE 999.0115/06

NATURE OF THE WORK

AIRCRAFT : Yes

EQUIPMENT : No

EVALUATION TABLE

COMPLIANCE Mandatory CANCELS INSPECTION S

POTENTIAL AD Yes A/C OPERATION AFFECT

RELIABILITY AFFECTED No PAX COMFORT AFFECTED 

COST SAVING No ETOPS AFFECTED 

STRUCTURAL LIFE EXTN No VENDOR SB INVOLVED 

KIT PRICE (USD) No AIRBUS kit

2
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

Config. 01 Detailed Visual Inspection

MATERIAL INFORMATION

AIRCRAFT DATA

No AIRBUS kit is required for the accomplishment of this Serv

APPENDICES

Appendix 01 - Inspection Report

TOTAL MANHOURS 

ELAPSED TIME (HOURS) 

TOTAL MANHOURS 

ELAPSED TIME (HOURS) 

3
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

4
7 DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page : 1 of 

Printed in FRANCE © AIRBUS, 2007 All rights reserved

MANDATORY MANDATORY MAND

ATA SYSTEM : 57

TITLE : WINGS - MAIN LANDING GEAR ATTACHMENT - INSPECTION OF THE M

BEARING FORWARD LUG

MODIFICATION No. : None

This document contains AIRBUS PROPRIETARY INFORMATION and shall a

remain the property of AIRBUS; no intellectual property right or 

granted by AIRBUS in connection with any information contained in 

delivered on the express condition that said document and the inf

contained in it shall be treated as confidential, shall not be us

purpose other than that for which it is hereby delivered. It shal

disclosed in whole or in part to third parties and shall not be d

any manner (except for the purposes of performing the tasks descr

and provided that any recipient of such document shall comply wit

conditions herein), without AIRBUS' prior written consent.

1. PLANNING INFORMATION

A. EFFECTIVITY

(1) Models

B4-103 B4-120 B4-203 B4-2C C4-203 F4-203

(2) Aircraft

(a) Effectivity by MSN

This Service Bulletin is applicable to aircraft 

0019 0035 0041 0044 0045 0047 0053 0055 0063 00

0079 0083-0085 0093-0095 0100 0101 0105 0107 01

0123-0126 0128 0129 0133-0139 0141 0147-0152 01

0173 0175 0180-0184 0189 0190 0192 0196 0199 020

0207 0208 0210-0212 0216 0218-0220 0222 0227 02

0240 0243 0247 0249 0250 0255 0256 0259 0261 02

0277 0289 0292 0299 0302 0304

(b) Effectivity by Operator

The Operator/MSN relationship is provided for in

and is correct at the time of issue in accordan
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

(c) Effectivity by MSN and Kit/Configuration

The kits and configurations applicable to these 

at the end of this list:

0019 0035 0041 0044-0045 0047 0053 0055 0063 00

0078-0079 0083-0085 0093-0095 0100-0101 0105 010

0121 0123-0126 0128-0129 0133-0139 0141 0147-01

0170 0173 0175 0180-0184 0189-0190 0192 0196 019

0203-0204 0207-0208 0210-0212 0216 0218-0220 02

0234-0236 0239-0240 0243 0247 0249-0250 0255-02

0265 0271 0274 0277 0289 0292 0299 0302 0304

60W 0073 0134 0157 0196 0218

A2S 0063

ABR 0148 0184 0189

AFG 0180 0190

BCS 0095 0116 0150 0152 0199 0208 0219 0

0236 0250 0259 0274 0289

BLM 0239

DHL 0084 0085 0141 0149 0249 0265

F2I 0079 0093 0094 0128 0133 0135 0136 0

0243

FLM 0151 0256

IAC 0181 0182 0240

IRM 0035 0055 0175 0204

KZU 0041 0044 0101 0117 0139 0173

MNB 0019 0047 0123 0126 0212 0222 0277 0

MSR 0200 0255

NTR 0124 0155 0210 0227 0247 0261

OHY 0138 0192 0299 0302

RUN 0075 0083 0105 0107 0121 0147 0154 0

TCN 0125

TDX 0053 0100 0207 0211 0216 0271

TNO 0045 0074 0078

TSY 0129

2
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

had Service Bulletin A300-57-0249 (Mod. N

embodied or which have not had oversized 

fit bushes installed in the LH and/or RH 

bearing forward lugs as per Repair Instru

R57240221. If oversized interference fit 

been installed as per Repair Instruction 

one wing only, then the opposite wing mu

inspected.

(3) Spares

None

B. CONCURRENT REQUIREMENTS

It is recommended that this Service Bulletin can be done 

time :

Service Bulletin No. A300-57-0212

C. REASON

(1) History

During routine maintenance, a crack has been found v

forward lug of the MLG rib 5 aft bearing attachment o

in-service aircraft. The concerned aircraft had accum

Flight Cycles (FC) and 27,000 FC at the time of find

OIT 999.0115/06).

In both cases the cracks extended through the entire 

the forward lug. The examination of the cracked ribs 

that the crack originated due to the presence of pitt

in the forward lug holes. Other small corner crack s

identified within the corroded region adjacent to th

on both aircraft medium to heavy corrosion was found 

lugs on the opposite wing after removal of the bushe

As an interim measure the Alert Service Bulletin (ASB

was issued to introduce a repetitive Detailed Visual 

(DVI) of the forward lug of the MLG Rib 5 aft bearing 

(2) Objective/Action

This Inspection Service Bulletin introduces a repetit

program to detect a crack in the forward lug of the 

Rib 5 aft bearing attachment.

3
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

modification Service Bulletin A300-57-0249 (Mod No. 

to perform repeat inspections. The embodiment of Serv

A300-57-0249 (Mod No. 13348H5689) is strongly recomm

cancel the inspection requirements of this Service B

This Service Bulletin supersedes Alert Service Bullet

A300-57A0248.

NOTE : Aircraft which have had Service Bulletin A300

No. 13348H5689) embodied or which have had ove

interference fit bushes installed in the LH a

rib 5 aft bearing forward lugs as per Repair 

not affected by this Service Bulletin. If ove

interference fit bushes have been installed a

R57240221 on one wing only, then the opposite 

inspected.

(3) Advantages

The repeat inspections will make sure that any crack 

inspection area on the forward lug of the MLG rib 5 

attachment will be identified.

(4) Operational/Maintenance Consequences

None

D. DESCRIPTION

To accomplish this Service Bulletin it is necessary to :

(1) Config. 01

(a) Make the work area safe.

(b) Get access to the forward lugs of the LH and RH 

bearing attachment.

(c) Do a DVI or an ultrasonic inspection.

(d) Close up and complete the documentation.

E. COMPLIANCE

(1) Classification

Mandatory

4
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

receipt of this Service Bulletin.

1 If there are no findings, a repeat inspectio

until accomplishment of Service Bulletin A300

No. 13348H5689) at the intervals that follow 

— DVI every 100 FC

— Ultrasonic Inspection every 675 FC.

NOTE : If the ASB A300-57A0248 has been accom

the next DVI should be 100 FC from the 

inspection accomplished by ASB A300-5

2 In case of findings per the visual inspectio

5 fitting will have to be replaced before the 

3 In case of findings per the ultrasonic inspec

crack is visible, aircraft can continue opera

accomplishment of the Repair Instruction R572

providing a repeat visual inspection is perfo

calendar hours with no findings. In case of f

the visual inspection, the fitting will have 

before the next flight.

NOTE : The ultrasonic inspection will detect 

an early stage and limit the risk of e

repairs. This earlier crack detection 

possible with the DVI.

NOTE : Aircraft which have had Service Bullet

A300-57-0249 (Mod No. 13348H5689) embo

have had oversized interference fit bu

in the LH and/or RH MLG rib 5 aft bea

lugs as per Repair R57240221 are not e

this Service Bulletin. If oversized in

bushes have been installed as per Repa

on one wing only, then the opposite wi

inspected.

(b) Accomplishment of this Service Bulletin is expe

rendered mandatory by the issue of an Airworthi

(AD) published by the European Aviation Safety A

It is anticipated that the AD will confirm the 

and/or intervals and/or date) given above but re

be made to the AD for confirmation of the mandat

accomplishment timescale.

5
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

before incorporation of the Service Bulletin.

G. MANPOWER

The manpower estimates given in this Service Bulletin are 

direct labor cost to do the work. These estimates assume 

will be done by experienced personnel, and may need to be 

upwards to suit operator's circumstances. The estimates do 

the time to prepare, plan or inspect the work. Manufactur

procurement of parts and tools, drying times for paints, 

and general administration work are also not included.

Config. 01

H. WEIGHT AND BALANCE

Not changed

I. ELECTRICAL LOAD DATA

Not changed

J. REFERENCES

Get access 

Ultrasonic inspection 

Close-up 

TOTAL MANHOURS 

ELAPSED TIME (HOURS) 

Get access 

Visual inspection 

Close-up 

TOTAL MANHOURS 

ELAPSED TIME (HOURS) 

Aircraft Maintenance Manual (AMM) : 24-00-00 32-00-00

Elec. Std. Practices Manual (ESPM) : 20-55-00

Non destructive Testing Manual (NTM) : 51-40-00 57-42-11

Service Bulletin : A300-57-0212

Service Bulletin : A300-57-0249

6
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

L. INTERCHANGEABILITY/MIXABILITY

Not applicable

7
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

This Page Intentionally Left Blank

8
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

AIRBUS will not provide industry support for accomplishme

Service Bulletin.

C. LIST OF COMPONENTS

None

D. LIST OF MATERIALS — OPERATOR SUPPLIED

(1) Consumable Materials

(2) Components

If a repair is to be accomplished, refer to Repair I

R57240221 for required components.

E. PARTS TO BE RE—IDENTIFIED BY THE OPERATOR

None

F. TOOLING — PRICE AND AVAILABILITY

None

G. SPECIAL TOOLS

Refer to NTM 57-42-11, Part 4 and Repair Instruction R5724

special tooling information.

DESCRIPTION REFERENCE TO CML

MAT. No.

QTY PER A/C 

Cleaning Agent 11-026 As required

Ardrox AV15 15-009A As required

9
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

This Page Intentionally Left Blank

10
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

CHOCKS ARE IN POSITION.

CAUTION : ALWAYS OBEY THE PRECAUTIONS THAT FOLLOW TO KEEP 

WIRING IN A SATISFACTORY CONDITION (ELECTRICALLY 

MECHANICALLY SERVICEABLE). WHEN YOU DO MAINTENAN

REPAIRS OR MODIFICATIONS, ALWAYS KEEP ELECTRICA

COMPONENTS AND THE WORK AREA AS CLEAN AS POSSIBL

PUT PROTECTION, SUCH AS PLASTIC SHEETING, CLOTH

NECESSARY ON WIRING AND COMPONENTS.

REGULARLY REMOVE ALL SHAVINGS, UNWANTED MATERIA

CONTAMINATION.

THESE PRECAUTIONS WILL DECREASE THE RISK OF CONT

DAMAGE TO THE ELECTRICAL WIRING INSTALLATION.

IN CASE OF CONTAMINATION REFER TO ESPM 20-55-00

(1) Preparation

(a) Config. 01

1 Make sure that the ground safety pins are in 

the MLG (Refer to AMM 32-00-00 Page block 30

2 Make sure that the aircraft is electrically g

to AMM 24-00-00 Page block 301).

3 Put a warning notice on the panel 4VU to tel

to operate the landing gear.

4 Put the access platforms in position.

5 Clean the inspection area use Cleaning Agent 

11-026) .

(2) Standard Practices

None

B. INSPECTION

NOTE (01) Operators can choose between an ultrasonic inspe

para 3.B.(1) or a DVI as per para. 3.B.(2).

11
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

(a) Ultrasonic Inspection

Refer to Figure 1

1 Do the ultrasonic inspection of the forward 

Rib 5 attachment fitting (Refer to NTM 57-42

2 If a crack is found, do workstep 3.B.(1)(b) a

the Flow Chart, Figure 2 .

3 If no cracks are found it is strongly recomme

modification Service Bulletin A300-57-0249 (M

13348H5689) is accomplished within 675 FC. If 

modification is not accomplished at this stag

protective coating of Ardrox AV 15 (Mat No. 

around the interface of the bush and lug and 

3.E CLOSE-UP.

(b) Detailed Visual Inspection

Refer to Figure 1

1 Prepare the area (Refer to NTM 51-40-00, Part 

NOTE : When looking forward, cracks are most 

occur on the aft face of the gear rib 

at approximately the 4 O'clock positio

gear rib and at approximately the 8 o'

on the RH gear rib.

2 Visually inspect the forward lug. Pay specia

the inboard face and to the forward and aft 

lug.

3 If a crack is found contact AIRBUS immediatel

Rib 5 will have to be replaced before the nex

4 If no cracks are found it is strongly recomme

Repair Instruction R57240221 is accomplished 

If the repair is not accomplished at this sta

a protective coating of Ardrox AV 15 (Mat No

around the interface of the bush and lug and 

3.E CLOSE-UP.

(c) Report any findings to AIRBUS (Refer to Appendix 

12
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

(a) Make sure that the work areas are clean and clea

other items of equipment.

(b) Remove access platforms.

(c) Remove safety devices from the landing gear and 

doors.

(d) Remove warning notices.

E. DOCUMENTATION

Write in the applicable aircraft records that you have don

given in the Service Bulletin.

13
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

Figure 1 Sheet 1

Config. 01: DVI Area of the MLG Forward Lug Faces

14
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

Figure 2 Sheet 1

Config. 01: LH and RH Wing MLG Forward Lug Inspection Flo

15
7 DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page : 1 of 

Printed in FRANCE © AIRBUS, 2007 All rights reserved
DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page :

Printed in FRANCE © AIRBUS, 2007 All rights reserved

Figure 1 Sheet 1

LH and RH wing MLG rib 5 attachment lugs - Inspection R

2
7 DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page : 1 of 

Printed in FRANCE © AIRBUS, 2007 All rights reserved

A - SB WILL BE embodied............. YES/NO (if NO p

If YES, aircraft concerned (as per SB effectivity by default) and 

(month/year) of embodiment:...................

.................................

.................................

B - SB HAS BEEN embodied on aircraft:..............

.................................

.................................

Operator comments:.......................

................................

................................

From Airline:..........................

Name/Title:...........................

Signature:.............. Date:......

If operational documentation is affected (see Paragraph 1.K of th

information is needed prior to next normal revision or prior to S

please indicate required service:

Either: Modification Operational Impact (MOI), if available. . YE

Or : Intermediate revision. ................ YE

Important Information: This SB will only be incorporated in your m

operational documentation if this sheet is returned to Airbus and 

duly authorised representative. With the next feasible revision, 

result in

- updating of maintenance documentation to show pre and post S

- updating of maintenance and operational documentation to show 

after embodiment.

If this SB requires previous or simultaneous accomplishment of ot

Airbus shall automatically include them in the manual revisions. 

00-037 for detailed information.

Please return this completed sheet to:

 AIRBUS

 CUSTOMER SERVICES DIRECTORATE

 1 Rond Point Maurice Bellonte

 31707 BLAGNAC CEDEX FRANCE

 Attn: SDC32 Technical Data and Documentation Services

 FAX: (+33) 5 61 93 28 06

 e-mail: sb.reporting@airbus.com

 or via your Resident Customer Support Office.

 Alternatively, SB lists via letters or fax are also accepted.
7 DATE : Aug 08/07 SERVICE BULLETIN No. : A300

REVISION No. : 00 — Page : 1 of 

Printed in FRANCE © AIRBUS, 2007 All rights reserved

(Please rate on a scale of 1 to 4, with 4 being the 

- Quality rating of this SB 

- Quality rating of the Accomplishment Instructions 

- Quality rating of the Illustrations 

- Is this SB easy to understand ? 

If you have had difficulties in the accomplishment of this SB plea

the area(s) and give a short description of the issue.

Planning Material Instruct

X Effectivity X Kit content X Preparat

X Reason X List of Materials X Mod/Insp

X Manpower Operator Supplied X Test

X References X Re-identification X Close-Up

X Publication X Tooling X Illustra

Comments :

Operator : Date:

Name/Title :

Please return this form to :

AIRBUS

CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC

Attn : SEM4 Service Bulletins Management

FAX : (33) 5 61 93 42 51

Or via your Resident Customer Support Office.