# A300 SERVICE BULLETIN REVISION TRANSMITTAL SHEET

**AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  **Tel : (33) 5 61 93 33 33 Telex : AIRBU 530526F**  **Fax : (33) 5 61 93 42 51** M A N DA TO RY M A N DA TO RY M A N DA TO RY M A N DA TO RY **ATA SYSTEM : 57 TITLE : WING - MAIN LANDING GEAR ATTACHMENT - INTRODUCTION OF BUSHES WITH INCREASED**  **INTERFERENCE FIT IN THE GEAR RIB 5 AFT BEARING FORWARD LUG MODIFICATION No. :**  13348H5689 This page transmits Revision No. 02 of Service Bulletin No. A300-57-0249 A D D I T I O N A L WO R K No additional work is required by this revision for aircraft modified by any previous issue. R E A S O N This revision has been issued to change the Compliance from Recommended to Mandatory. The part number of the line honing tool has been updated. Figure 1, Sheets 1, 2 and 3 revised to remove revision bars. Layout changes due to computerization of this revision are not identified. C H A N G E S SUMMARY : - REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES

. Evaluation Table has been updated, Compliance has been changed from Recommended to Mandatory and Potential AD has been changed from No to Yes. - EFFECTIVITY

. Effectivity has been updated. PLANNING INFORMATION : - EFFECTIVITY

. 1.A. Effectivity has been updated. - COMPLIANCE - Classification DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 1 of 3 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN REVISION TRANSMITTAL SHEET

. 1.E.(1) Compliance has been changed from Recommended to Mandatory. - Accomplishment Timescale

. 1.E.(2) Accomplishment Timescale has been updated to reflect Mandatory compliance. MATERIAL INFORMATION : - MATERIAL - PRICE AND AVAILABILITY - Material

. 2.A.(1) Address has been updated. Kit price updated. - TOOLING - PRICE AND AVAILABILITY

. 2.F. Tool part number updated. ACCOMPLISHMENT INSTRUCTIONS : - MODIFICATION

. 3.B.(1)(b)4 Dimension identification changed. . 3.B.(1)(b)5 Dimension identification changed. . 3.B.(1)(b)6 Dimension identification changed. . 3.B.(1)(c)1 Dimension identification changed. . 3.B.(1)(c)5 Dimension identification changed. . 3.B.(1)(c)9 Dimension identification changed. - Figure 1

. Revision bars removed. F I L I N G I N S T R U CT I O N S 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. H I S TO RY O F P R E V I O U S R E V I S I O N S Revision 01 was issued to amend tooling item numbers, part numbers and correct the surface finish units. The opportunity was taken to correct minor errors and update the effectivity.

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 2 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN REVISION TRANSMITTAL SHEET

R E V I S I O N S E Q U E N C E ORIGINAL : May 22/07 REVISION No. : 01 - Dec 19/07 REVISION No. : 02

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 3 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

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DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 4 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN SUMMARY

**AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  **Tel : (33) 5 61 93 33 33 Telex : AIRBU 530526F**  **Fax : (33) 5 61 93 42 51** This summary is for information only and is not approved for modification of the aircraft M A N DA TO RY M A N DA TO RY M A N DA TO RY M A N DA TO RY **ATA SYSTEM : 57 TITLE : WING - MAIN LANDING GEAR ATTACHMENT - INTRODUCTION OF BUSHES WITH INCREASED**  **INTERFERENCE FIT IN THE GEAR RIB 5 AFT BEARING FORWARD LUG MODIFICATION No. :**  13348H5689 R E A S O N / D E S C R I P T I O N /O P E R A T I O N A L C O N S E Q U E N C E S During routine maintenance, a crack has been found visually in the Main Landing Gear (MLG) rib 5 on two A310 in-service aircraft. The crack was found in the forward lug of the MLG rib 5 aft bearing attachment. The concerned aircraft had accumulated 24,000 flight cycles (FC) and 27,000 FC at the time of finding, refer to Operator Information Telex (OIT) 999.0115/06. In both cases the cracks extended through the entire thickness of the forward lug. Inspection of the MLG rib 5 forward lug on the opposite wings was performed after removal of the bushes on the concerned aircraft. The inspection revealed medium to heavy corrosion in the forward lug holes. A laboratory examination of the two cracked ribs confirmed that the origin of the cracks was due to pitting corrosion. Although there have been no crack findings on A300 B4 aircraft so far, the differences in MLG rib 5 design compared to the A310 do not allow the exclusion of the possibility of cracks. This Service Bulletin introduces new bushes with an increased interference fit in the aft bearing forward lugs. The aft lug of the aft bearing attachment is not affected, as the bush is already installed during production with an increased interference fit. After removal of the old bushes, a dye penetrant flaw detection inspection is carried out on the lug bores and faces before installation of the new bushes to make sure that the lugs are damage free. If oversized interference fit bushes have already been installed in one or more of the MLG rib 5 aft bearing forward lug positions as per the Repair Instruction R57240221, the intent of this modification can be considered as embodied in those positions. Accomplishment of this Service Bulletin will significantly reduce the likelihood of corrosion and any subsequent cracks in the forward lug of the MLG rib 5 aft bearing attachment. Accomplishment of this Service Bulletin will cancel the inspection requirements of Service Bulletins A300-57A0248 and A300-57-0251. DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 1 of 5 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN SUMMARY

EVALUATION TABLE COMPLIANCE Mandatory CANCELS INSPECTION SB Yes POTENTIAL AD Yes A/C OPERATION AFFECTED No RELIABILITY AFFECTED No PAX COMFORT AFFECTED No COST SAVING No ETOPS AFFECTED No STRUCTURAL LIFE EXTN No VENDOR SB INVOLVED No KIT PRICE (USD)B01R00 3960 NORMAL JACKING Yes

MODIFICATION CLASSIFICATION MAJOR None

MINOR 13348H5689
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. **E F**  **F E**  **C T**  **I V**  **I T** **Y** This Service Bulletin is applicable to this (these) operator(s) : 72U ABR AFG BCS DHL F2I FLM IAW IRA IRM KZU MIX MNB MSR NTR RUN SOP TDX TNO TSY This modification is applicable by Service Bulletin only. C O N C U R R E N T R E Q U I R E M E N T S None

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 2 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN SUMMARY

R E F E R E N C E S/ R E P E R C U S S I O N S TFU : 57.51.34.004 OEB : None AOT : None SIL : None LIFE LIMIT : None LINE MAINTENANCE AFFECTED : No OTHERS : OIT SE 999.0115/06 N A T U R E O F T H E WO R K AIRCRAFT : Yes EQUIPMENT : No HARD : No SOFT : No OBRM : No M A N P OW E R Config. 01

**TOTAL MANHOURS 37.50 ELAPSED TIME (HOURS) 19.00**  NOTE : If the Repair Instruction R57240221, "Removal of corrosion from the gear rib lugs and the installation of oversized bushes" is necessary, then approximately 52.0 manhours for each wing will be necessary for repair. M A T E R I A L I N F O R M A T I O N AIRCRAFT DATA 2 x Kit 570249B01R00 will be necessary for accomplishment of this Service Bulletin on each aircraft. Kit 570249B01R00 comprises 1 bush A5724078620400 and 1 bush A5724085320200. 1 kit will be necessary for the LH Gear Rib 5 and 1 kit will be necessary for the RH Gear Rib 5.

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 3 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN SUMMARY

A Tool Kit 044A411058D is necessary to accomplish this Service Bulletin. The Tool Kit includes tools for the removal/installation of the bushes and a line honing tool to finish the internal diameter of the bushes after installation. NOTE : Tool Kit 044A411058D also includes the re-boring tool which is necessary to repair the aft bearing attachment lugs if they are found to be damaged. A P P E N D I C E S None

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 4 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN SUMMARY

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 5 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

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DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 6 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

**AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  **Tel : (33) 5 61 93 33 33 Telex : AIRBU 530526F**  **Fax : (33) 5 61 93 42 51** M A N DA TO RY M A N DA TO RY M A N DA TO RY M A N DA TO RY **ATA SYSTEM : 57 TITLE : WING - MAIN LANDING GEAR ATTACHMENT - INTRODUCTION OF BUSHES WITH INCREASED**  **INTERFERENCE FIT IN THE GEAR RIB 5 AFT BEARING FORWARD LUG MODIFICATION No. :**  13348H5689 This document contains AIRBUS PROPRIETARY INFORMATION and shall at all times remain the property of AIRBUS; no intellectual property right or licence is granted by AIRBUS in connection with any information contained in it. It is delivered on the express condition that said document and the information contained in it shall be treated as confidential, shall not be used for any purpose other than that for which it is hereby delivered. It shall not be disclosed in whole or in part to third parties and shall not be duplicated in any manner (except for the purposes of performing the tasks described hereunder and provided that any recipient of such document shall comply with the conditions herein), without AIRBUS’ prior written consent. **1. P L** **A N**  **N I**  **N G**  **I N**  **F O**  **R M**  **A T**  **I O**  **N A. E**  **F F**  **E C**  **T I**  **V I**  **T Y**  (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 MSN : 0019 0041 0044 0045 0047 0053 0055 0074 0075 0078 0079 0083-0085 0094 0095 0100 0101 0105 0107 0116 0117 0121 0123-0126 0128 0129 0133-0137 0139 0141 0147-0152 0154-0157 0170 0173 0175 0180 0183 0184 0189 0190 0196 0199 0200 0203 0204 0208 0210-0212 0216 0218-0220 0227 0234-0236 0239 0243 0247 0249 0250 0255 0256 0259 0261 0265 0274 0277 0289 0292 0299 0302 0304 (b) Effectivity by Operator The Operator/MSN relationship is provided for information only and is correct at the time of issue in accordance with the information available to AIRBUS. Any future changes resulting from transfer of an aircraft from one operator to another will not be reflected in this list unless the Service Bulletin is revised for another reason.
DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

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# A300 SERVICE BULLETIN

OPERATOR MSN 72U 0079 ABR 0148 0152 0184 0189 0199 0208 0219 0220 0234 0236 0250 0259 0274 0289 AFG 0180 0190 BCS 0095 0116 0150 DHL 0084 0085 0141 0149 0249 0265 F2I 0083 0094 0128 0133 0135 0136 0137 0156 0170 0235 0243 FLM 0151 0256 IAW 0239 IRA 0139 0173 0299 0302 IRM 0055 0175 0204 KZU 0041 0044 0101 0117 MIX 0125 0134 0157 0196 0203 0218 MNB 0019 0047 0123 0212 0277 0292 0304 MSR 0200 0255 NTR 0124 0155 0210 0227 0247 0261 RUN 0075 0105 0107 0121 0147 0154 0183 SOP 0126 TDX 0053 0100 0211 0216 TNO 0045 0074 0078 TSY 0129 This modification is applicable by Service Bulletin only. (c) Effectivity by MSN and Kit/Configuration The Kits and configurations applicable to these MSNs are given at the end of this list 0019 0041 0044-0045 0047 0053 0055 0074-0075 0078-0079 0083-0085 0094-0095 0100-0101 0105 0107 0116-0117 0121 0123-0126 0128-0129 0133-0137 0139 0141 0147-0152 0154-0157 0170 0173 0175 0180 0183-0184 0189-0190 0196 0199-0200 DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

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# A300 SERVICE BULLETIN

0203-0204 0208 0210-0212 0216 0218-0220 0227 0234-0236 0239 0243 0247 0249-0250 0255-0256 0259 0261 0265 0274 0277 0289 0292 0299 0302 0304 KIT No. QTY PER A/C CONFIGURATION 570249B01 2 01 NOTE : Config. 01 is valid for all aircraft that have not had oversized interference fit bushes installed by Repair Instruction R57240221. If oversized interference fit bushes are found to have been installed by Repair Instruction R 57240221 on one wing only, then only 1 Kit 570249B01R00 will be necessary. (3) Spares None **B. C O**  **N C**  **U R**  **R E**  **N T**  **R E**  **Q U**  **I R**  **E M**  **E N**  **T S**  None **C. R E**  **A S**  **O N**  (1) History During routine maintenance, a crack has been found visually in the MLG rib 5 on two A310 in-service aircraft. The crack was found in the forward lug of the MLG rib 5 aft bearing attachment. The concerned aircraft had accumulated 24,000 FC and 27,000 FC at the time of finding, refer to OIT 999.0115/06. In both cases the cracks extended through the entire thickness of the forward lug. Inspection of the MLG rib 5 forward lug on the opposite wings was performed after removal of the bushes on the concerned aircraft. The inspection revealed medium to heavy corrosion in the forward lug holes. A laboratory examination of the two cracked ribs confirmed that the origin of the cracks was due to pitting corrosion. Although there have been no crack findings on A300 B4 aircraft so far, the differences in MLG rib 5 design compared to the A310 do not allow the exclusion of the possibility of cracks. (2) Objective/Action This Service Bulletin introduces new bushes with an increased interference fit in the aft bearing forward lugs. The aft lug of the aft bearing attachment is not affected, as the bush is already installed with an increased interference fit since origin. After removal of the old bushes, a dye penetrant flaw detection inspection is carried out on the lug bores and faces before installation of the new bushes to make sure that the lugs are free of corrosion/damage. If oversized interference fit bushes have already been installed in one or more of the MLG rib 5 aft bearing forward lug position(s) as per the Repair Instruction R57240221, the intent of this modification can be considered as embodied in those position(s). DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 3 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

(3) Advantages Accomplishment of this Service Bulletin will significantly reduce the likelihood of corrosion and any subsequent cracks in the forward lug of the MLG rib 5 aft bearing attachment. Accomplishment of this Service Bulletin will cancel the inspection requirements of Service Bulletins A300-57A0248 and A300-57-0251. (4) Operational/Maintenance Consequences None **D. D E**  **S C**  **R I**  **P T**  **I O**  **N** To accomplish this Service Bulletin it is necessary to : (1) Config. 01 (a) Lift the aircraft on jacks. (b) Remove the LH and RH MLG legs. (c) Remove the bushes from the gear rib 5 aft bearing forward lugs. (d) Inspect the lug faces and bores for damage/corrosion. (e) If there is damage/corrosion in the bores, do the work detailed in Repair Instruction R57240221. (f) If there is no damage/corrosion, install the new bushes in the forward lugs of the MLG gear rib 5 aft bearing attachment. NOTE : It is necessary to freeze fit the new bushes. (g) Line-hone the new bushes to the finished internal diameter. (h) Install the LH and RH MLG legs. (i) Do the applicable tests. (j) Lower the aircraft off jacks. (k) Close up and complete the documentation. **E. C O**  **M P**  **L I**  **A N**  **C E**  (1) Classification Mandatory (2) Accomplishment Timescale

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 4 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

Accomplishment of this Service Bulletin has been rendered 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 mandatory accomplishment timescale. **F. A P**  **P R**  **O V**  **A L**  Approved under EASA Design Organisation Approval No. EASA.21J.031. If an aircraft listed in the effectivity 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. M A**  **N P**  **O W**  **E R**  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. Config. 01 Remove LH MLG 5.00 Remove RH MLG 5.00 Remove LH Gear Rib 5 bushes 1.50 Remove RH Gear Rib 5 bushes 1.50 Inspect bores/faces of the LH lugs 1.00 Inspect bores/faces of the RH lugs 1.00 Install new LH Gear Rib 5 bushes 3.00 Install new RH Gear Rib 5 bushes 3.00 Install LH MLG 5.00 Install RH MLG 5.00 Test 6.00 Close up 0.50 **TOTAL MANHOURS 37.50 ELAPSED TIME (HOURS) 19.00** 
DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

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# A300 SERVICE BULLETIN

NOTE : If the Repair Instruction R57240221, "Removal of corrosion from the gear rib lugs and the installation of oversized bushes" is necessary, then approximately 52.0 manhours for each wing will need to be added. **H. W E**  **I G**  **H T**  **A N**  **D B** **A L** **A N**  **C E**  Not changed **I. E L**  **E C**  **T R**  **I C**  **A L**  **L O** **A D**  **D A**  **T**

**A** Not changed **J. R E**  **F E**  **R E**  **N C**  **E S**  Aircraft Maintenance Manual (AMM) : 07-11-00 32-11-11 Elec. Std. Practices Manual (ESPM) : 20-55-00 Non destructive Testing Manual (NTM) : 51-60-00 Process and Mat. Spec. Manual (PMSM) : 01-06-12 Structural Repair Manual (SRM) : 51-40-18 51-40-20 Repair Instruction R57240221 Service Bulletin A300-57A0248 Service Bulletin A300-57-0251 **K. P U**  **B L**  **I C**  **A T**  **I O**  **N S**  **A F**  **F E**  **C T**  **E D**  None **L. I N**  **T E**  **R C**  **H A**  **N G**  **E A**  **B I**  **L I**  **T Y**  **/ M**  **I X** **A B**  **I L**  **I T** **Y** Not applicable

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 6 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

**2. M A**  **T E**  **R I**  **A L**  **I N**  **F O**  **R M**  **A T**  **I O**  **N A. M**  **A T**  **E R**  **I A**  **L -**  **P R**  **I C**  **E A**  **N D**  **A V** 

**A I**  **L A**  **B I**  **L I**  **T Y**  (1) Material Customers with aircraft shown in the effectivity of this Service Bulletin should send a purchase order to AIRBUS. Quote the number of this Service Bulletin. The address is : AIRBUS Material, Logistics and Suppliers Weg beim Jaeger 150 D-22335 HAMBURG GERMANY For ordering by internet: http://spares.airbus.com For ordering by fax: +49 40 50 76 25 90 (2) Price and Availability Kit 570249B01R00 Cost : 4590 US dollars Availability : 90 calendar days from receipt of order The Kit availability given above is the standard lead time from the date of your purchase order. If you require the Kit(s) before this time, please include a retrofit planning schedule with your order so that we can try to comply with your requirements. The sales terms (costs and availability) are estimated in relation to economic conditions at the issue date of the Service Bulletin. **B. I N**  **D U**  **S T**  **R Y**  **S U**  **P P**  **O R** **T I**  **N F**  **O R**  **M A**  **T I**  **O N**  AIRBUS will provide a 50 % reduction to the applicable sales prices given in paragraph 2A(2) for orders placed before 31 December 2013. **C. L I**  **S T**  **O F**  **C O**  **M P**  **O N**  **E N**  **T S**  Kit 570249B01R00 ITEM NEW PART No. QTY UM KEYWORD ITEM OLD PART No. INT INST DISP 1 A5724085320200 1 Bush (1) A5724085320000 * 2 A5724078620400 1 Bush (2) A5724078620200 * NOTE(*) Discard

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 7 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

**D. L I**  **S T**  **O F**  **M A**  **T E**  **R I**  **A L**  **S -**  **O P**  **E R**  **A T** **O R**  **S U**  **P P**  **L I**  **E D**  (1) Consumable Materials DESCRIPTION REFERENCE TO CML QTY PER A/C INST/DISP MAT No. Honing Fluid Mat. No. 06-010 As required Varnish Mat. No. 07-018 As required 01 Sealant, Anaerobic Mat. No. 08-003 As required Fuel Tank Sealant Polysulfide Mat. No. 09-002 As required Adhesion Promoter For Polysulfide Sealant Mat. No. 09-028 As required Solvent General Purpose Mat. No. 11-026 As required Chemical Conversion Coating Yellow Aluminum Mat. No. 13-002 As required Polyurethane Gloss Finish (Clear Basecoat) Mat. No. 16-021B As required Marker Pen 8404 None 1 02 NOTE(01) Mat. No. 07-018 is an alternative lacquer to Mat. No. 16-021B when used to protect written part numbers. NOTE(02) The Marker Pen 8404 can be procured from : Edding (UK) Ltd. Merlin Centre Acrewood Way St. Albans Herts England (2) Components None **E. P A**  **R T**  **S T** **O B**  **E R**  **E -**  **I D**  **E N**  **T I**  **F I**  **E D**  **B Y**  **T H**  **E O**  **P E**  **R A**  **T O**  **R** ITEM NEW PART No. KEYWORD ITEM OLD PART No. INT * Gear Rib A57240810000 02 * Gear Rib A57240810001 02 * Gear Rib A57240810004 02 * Gear Rib A57240810005 02 * Gear Rib A57240810008 02 * Gear Rib A57240810009 02 NOTE : * Re-identify by marking the SB number "SB A300-57-0249" adjacent to the old part number. **F. T O**  **O L**  **I N**  **G -**  **P R**  **I C**  **E A**  **N D**  **A V** 

**A I**  **L A**  **B I**  **L I**  **T Y**  ITEM PART NUMBER QTY DESCRIPTION DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 8 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

044A411058D 1 MLG Rib 5 Toolkit NOTE(01) The tool kit contains the following items for the removal of the bushes, Items (1) and (2) (Refer to Figure 1, Sheet 2): - Qty 1 0044A411058D-33 Split Location Ring - Qty 1 0044A411058D-35 Bolt - Qty 1 0044A411058D-43 Enerpac Cylinder - Qty 1 0044A411058D-44 Enerpac Hand Pump - Qty 1 0044A411058D-45 Enerpac Connector Hose - Qty 1 0044A411058D-46 Spherical Washer - Qty 1 0044A411058D-47 Location Block - Qty 4 0044A411058D-48 Bolt (for Item 47) - Qty 1 0044A411058D-49 Thrust Washer - Qty 2 0044A411058D-50 Nut - Qty 1 0044A411058D-51 Reaction Block (Aft Bush Item (1)) - Qty 1 0044A411058D-86 Captive Washer - Qty 1 0044A411058D-87 Shoulder Screw (for Item 86) - Qty 1 0044A411058D-90 Reaction Block (Fwd Bush Item (2)) NOTE(02) The tool kit contains the following items for the installation of the bushes, Items 1 and 2 (Refer to Figure 1, Sheet 3): - Qty 1 0044A411058D-35 Bolt - Qty 1 0044A411058D-38 Installation Block - Qty 1 0044A411058D-43 Enerpac Cylinder - Qty 1 0044A411058D-44 Enerpac Hand Pump - Qty 1 0044A411058D-45 Enerpac Connector Hose - Qty 1 0044A411058D-46 Spherical Washer - Qty 2 0044A411058D-50 Nut - Qty 1 0044A411058D-51 Reaction Block (Fwd Bush Item 2) - Qty 1 0044A411058D-86 Captive Washer - Qty 1 0044A411058D-87 Shoulder Screw (for Item 86) - Qty 1 0044A411058D-90 Reaction Block (Aft Bush Item 1) NOTE(03) The tool kit will also contain an In-Line Honing Tool PN MT58133-195 to line hone the bushes to the finished internal diameter after installation (Refer to Figure 2). Also in the tool kit is a shorter In-Line Honing Tool PN MT58133-197 which can be used as an alternative and an Alignment Tool (truing sleeve) PN MT19048 to set up the In-Line Honing Tools. Also included are additional tools required in case a repair is necessary. **G. S P**  **E C**  **I A**  **L T** **O O**  **L S**  None

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

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# A300 SERVICE BULLETIN

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DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 10 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

**3. A C**  **C O**  **M P**  **L I**  **S H**  **M E**  **N T**  **I N**  **S T**  **R U**  **C T**  **I O**  **N S**  **A. G E**  **N E**  **R A**  **L** 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. IN CASE OF CONTAMINATION REFER TO ESPM 20-55-00, CLEANING. (1) Preparation (a) Config. 01 1 Lift the aircraft on jacks (Refer to AMM 07-11-00, Page block 1). 2 Remove the LH and RH MLG legs (Refer to AMM 32-11-11, Page block 401). 3 Put access platforms in position in Zones 730/740. (2) Standard Practices (a) Part marking with indelible ink (Refer to PMS 01-06-12 and Para. 2.D.). (b) Application of protective treatments (Refer to SRM 51-40-18, Page block 1). (c) Application of a bead seal (fillet) (Refer to SRM 51-40-20, Page block 701).

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 11 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

**B. M O**  **D I**  **F I**  **C A**  **T I**  **O N**  NOTE : The worksteps that follow are applicable to the LH and RH wings. (1) Config. 01 (a) Removal of Bushes Refer to Figure 1, Sheet 1 and 2 1 Use the removal/installation tool from the tool kit 044A4111058D to remove these items : 1 Bush A5724085320000 Item (1) Discard 1 Bush A5724078620200 Item (2) Discard (b) Inspection of Lug Faces and Bores Refer to Figure 1, Sheet 1 1 Clean the bores of the lugs with a plastic spatula and Solvent General Purpose (Mat. No. 11-026). 2 Visually inspect the bore and the spotfaces of the lug to make sure there is no corrosion and/or damage. 3 Do a dye penetrant flaw detection test of the bore and the spotfaces of the lug to make sure there is no corrosion and/or damage (Refer to Part 1 of NTM 51-60-00, Page block 1). 4 Do a check to make sure that the diameter of the bore of the lug (dimension Y) is within the tolerance of 5.1900 to 5.1916 ins. (131.826 to 131.866 mm). 5 If no damage and/or corrosion is found and dimension Y is within the tolerance do workstep (1) (c). 6 If there is damage and/or corrosion found, or if dimension Y is more than the given tolerance, report the findings to AIRBUS and wait for advice for repair R57240221 and re-boring tool 044A411058D. (c) Installation of Bushes Refer to Figure 1, Sheet 1 and 3 and Figure 2, Sheet 1 and 2 1 Before installing the bushes check that the dimension Z (Refer to Figure 1, Sheet 1) is likely to be achieved. This can be done by measuring the thickness of the lug and the thickness of the flange on the two bushes and adding them together. Dimension Z should be between 2.715 and 2.727 in (68.97 and 69.26 mm). If the dimension Z is outside the tolerance, contact AIRBUS. 2 Apply Chemical Conversion Coating Yellow Aluminum (Mat. No. 13-002) to the bore and the spotfaces of the lug. 3 Apply Sealant, Anaerobic (Mat. No. 08-003) to the bores of the lug and the mating surface for the seat of the bush flange. DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 12 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

WARNING : LIQUID NITROGEN IS DANGEROUS. OBEY THE MANUFACTURERS INSTRUCTIONS AND WEAR THE CORRECT PROTECTIVE CLOTHING WHEN YOU USE LIQUID NITROGEN. CAUTION : DO NOT PUT MORE THAN ONE BUSH AT A TIME INTO THE LIQUID NITROGEN, USE CLEAN TONGS TO REMOVE THE BUSH FROM THE LIQUID NITROGEN AND TO INSTALL IT IN THE BORE OF THE LUG. 4 Install these items from Kit 570249B01R00 as follows: 1 Bush A5724085320200 Item 1 1 Bush A5724078620400 Item 2

- freeze each bush in sequence in liquid nitrogen for not less than three minutes, - use the installation tool (refer to Figure 1 Sheet 3) to install each bush in sequence in the applicable end of the bore of the forward lug of the aft gear-rib bearing. Make sure that the bushes are fully installed, - allow the bushes to return to ambient temperature. 5 Make sure that the dimension Z is within the tolerance of 2.715 to 2.727 in. (68.97 to 69.26 mm). 6 Make sure that the space between the bushes, Item 1 and Item 2 is free of sealant. 7 Assemble the in-line honing tool as shown, refer to Figure 2, Sheet 1. 8 Use the alignment tool to set up the in-line honing tool as shown, refer to Figure 2, Sheet 2. CAUTION : USE ONLY "DELAPENA" HONING FLUID (Mat. No. 06-010). 9 Use the in-line honing tool to finish the internal diameter (dimension X) of the bushes, Item 1 and Item 2, within the tolerance of 4.9210 to 4.9226 in. (124.994 to 125.034 mm) and to a surface finish of 32 micro inches (0.81 microns). 1 0 Use Solvent General Purpose (Mat. No. 11-026) and a cloth to clean the area. 1 1 Apply Adhesion Promoter For Polysulfide Sealant (Mat. No. 09-028) around the flanges of the bushes, Items 1 and 2. 1 2 Apply a continuous bead of sealant around the edges of the bushes, Item 1 and Item 2 to form a fillet seal, use Fuel Tank Sealant Polysulfide (Mat. No. 09-002). 1 3 Use Solvent General Purpose (Mat. No. 11-026) and a cloth to remove any unwanted sealant. 1 4 Apply Polyurethane Gloss Finish (Clear Basecoat) (Mat. No. 16-021B) to the fillet seals to protect the sealant from hydraulic fluid. DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

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# A300 SERVICE BULLETIN

(d) Re-identify the gear ribs 5 by marking this SB No. adjacent to the PN, refer to Para. 2.E. and Para. 3.A.(2)(a). Apply Polyurethane Gloss Finish (Clear Basecoat) (Mat. No. 16-021B) to protect the written SB No. from hydraulic fluid. **C. T E**  **S T**  (1) Config. 01 (a) The test procedures necessary for the LH and RH MLG Leg are included in the reference for installation (Refer to Para. D.(1)(a)). **D. C L**  **O S**  **E U**  **P** (1) Config. 01 (a) Install the LH and RH MLG legs (Refer to AMM 32-11-11, Page block 401). (b) Make sure that the work areas are clean and clear of tools and other items of equipment. (c) Remove the access platforms from Zones 730/740. (d) Lower the aircraft off jacks (Refer to AMM 07-11-00, Page block 1). **E. D O**  **C U**  **M E**  **N T**  **A**

**T I**  **O N**  Write in the applicable aircraft records that you have done all the work given in the Service Bulletin.

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 14 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

Figure 1, Sheet 1 Config. 01: Replacement of Gear Support Rib Bushes DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 15 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

Figure 1, Sheet 2 Config. 01: Replacement of Gear Support Rib Bushes DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 16 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

Figure 1, Sheet 3 Config. 01: Replacement of Gear Support Rib Bushes DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 17 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

Figure 2, Sheet 1 Config. 01: Line Honing of Bushes
DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 18 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

Figure 2, Sheet 2 Config. 01: Line Honing of Bushes
DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 19 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN

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DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 20 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN REPORTING SHEET

**TITLE : WING - MAIN LANDING GEAR ATTACHMENT - INTRODUCTION OF BUSHES WITH INCREASED INTERFERENCE FIT IN THE GEAR RIB 5 AFT BEARING FORWARD LUG**  **MODIFICATION No. :** 13348H5689 P l e a s e c o m p l et e t h e a p p ro p r i at e i t e m (A o r B ) : A - SB W I L L B E embodied .................................................................. YES/NO (if NO please comment) If YES, aircraft concerned (as per SB effectivity by default) and planned dates (month/year) of embodiement:

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............................................................................................................................... .............................................. B - SB H A S B E E N embodied on aircraft: ............................................................................................................

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

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

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

...................................... Signature:..................... Date: ..................................................... I f o p e rat i o n a l d o c u m e n t at i o n i s affe ct e d ( s e e Pa ra g ra p h 1

. K of t h i s S B ) : If information is needed prior to next normal revision or prior to SB embodiment, please indicate required service(s): Either : Advance data................................................................................... YES/NO Or : Intermediate/Temporary revision ..................................................... YES/NO I m p o r t a n t I n fo r m at i o n : This SB will only be incorporated in your maintenance and operational documentation if this sheet is returned to Airbus and signed by a duly authorised representative. With the next feasible revision, this will result in - updating of maintenance documentation to show pre and post SB data. - updating of maintenance and operational documentation to show post SB data after embodiment. If this SB requires previous or simultaneous accomplishment of other SBs, Airbus shall automatically include them in the manual revisions. Refer to SIL 00-037 for detailed information. P l e a s e ret u r n t h i s co m p l et e d s h e et to : **AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  Attn: SEDCC1 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.

DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 1 of 1 Printed in France © AIRBUS 2008 All rights reserved

# A300 SERVICE BULLETIN REPORTING QUALITY

**TITLE : WING - MAIN LANDING GEAR ATTACHMENT - INTRODUCTION OF BUSHES WITH INCREASED INTERFERENCE FIT IN THE GEAR RIB 5 AFT BEARING FORWARD LUG**  **MODIFICATION No. :** 13348H5689 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 futher improve the quality of our Service Bulletins. We thank you for the time you have taken in completing this form. (Please rate on a scale of 1 to 4, with 4 being the highest score) -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 If you have had 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 Effectivity X Kit Content X Preparation X Reason X List of Materials X Mod/Inspection X Manpower Operator Supplied X Test X References X Re-identification X Close-up X Publication X Tooling X Illustrations C o m m e n ts :

Operator : Date: Name/Title : Please return this form to: **AIRBUS CUSTOMER SERVICES DIRECTORATE**  **1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE**  Attn: SEMB Service Bulletins Management FAX: (+33) 5 61 93 42 51 Or via your Resident Customer Support Office. DATE : May 22/07 SERVICE BULLETIN No. : A300-57-0249

REVISION No. : 02 - Jun 18/10 Page : 1 of 1 Printed in France © AIRBUS 2008 All rights reserved