# @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. 

# MANDATORY MANDATORY MANDATORY ATA SYSTEM: 57 

### TITLE: WINGS - STRUCTURE - INSPECTION OF MAIN LANDING GEAR SUPPORT RIB 5 LUGS **CONF ALL MODIFICATIONS None REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES During routine maintenance, two A321 aircraft Left Hand (LH) Main Landing Gear (MLG) Rib 5 forward lugs were found ruptured. These had been previously modified as per Service Bulletin A320-57-1118 under Structural Repair Manual limits (Ref. ARS 57-0029). The analysis of the first event has shown that a sealant discrepancy had led to water ingress and then initiated corrosion, leading to cracking. The investigation of the second event has shown that a remaining defect which was not removed during the repair had propagated, resulting in rupture of the lug. In order to maintain Continued Airworthiness of Single Aisle aircraft, a repetitive Detailed Visual Inspection is introduced by Rev. 01 to Service Bulletin A320-57-1166 for all modified and/or repaired aircraft. Due to the similarity between MLG Rib 5 on A300 aircraft and that of the A320 aircraft family (same design principle for the lug, same material, same modification or repair principles), a repetitive Detailed Visual Inspection (DVI) or Ultrasonic Inspection (SDET) is also introduced by this Service Bulletin for Gear Rib 5 lugs: - Modified by Service Bulletin A300-57-0249 Rev. 00 to 02 - Repaired by Repair Instruction R57240221 Issue A to G. This repetitive inspection will maintain Airworthiness of all aircraft modified by Service Bulletin and/or repaired by Repair Instruction.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 1 7

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# @A300 SERVICE BULLETIN SUMMARY GENERAL EVALUATION EVALUATION TABLE COMPLIANCE MANDATORY (1) CANCELS INSPECTION SB NO 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 NOTE (1) : Service Bulletin must be accomplished. MATERIAL PRICE INFORMATION No Material EFFECTIVITY This Service Bulletin is applicable to this (these) operator(s) :

69X ABR AFG C2A DHL F2I IAW IRA IRM KYE KZU MIX MNB MNG MSR NTR P2A RUN SOP TNO TSY CONCURRENT REQUIREMENTS Service Bulletin A300-57-0249. REFERENCES / REPERCUSSIONS TFU None OEB None AOT None SIL None LINE MAINTENANCE AFFECTED No LIFE LIMIT None OTHER None NATURE OF THE WORK AIRCRAFT YES EQUIPMENT NO HARD NO SOFT NO OBRM NO MANPOWER Task 570255-832-895-001: METHOD 1 - DETAILED VISUAL INSPECTION (DVI) TOTAL MANHOURS 3.00 ELAPSED TIME (HOURS) 3.00 Task 570255-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) TOTAL MANHOURS 4.00 DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 2 7

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# @A300 SERVICE BULLETIN SUMMARY Task 570255-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) ELAPSED TIME (HOURS) 4.00 APPENDICES INSPECTION REPORTING FORM

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 3 7

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# @A300 SERVICE BULLETIN SUMMARY

**CONF ALL



### A

GEAR RIB FORWARD LUG INNER REAR SPAR

**FWD**



## A LH SHOWN RH SIMILAR

A_SB_570255_7_SAAA_01_00 GEAR RIB AFT LUG

Figure A-USAAA - Sheet 01

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 4 7

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# @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



# MANDATORY MANDATORY MANDATORY ATA SYSTEM: 57 

### TITLE: WINGS - STRUCTURE - INSPECTION OF MAIN LANDING GEAR SUPPORT RIB 5 LUGS MODIFICATION No.: None 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. PLANNING INFORMATION **CONF ALL A. EFFECTIVITY (1) Models B4-103 B4-203 B4-2C C4-203 F4-203 (2) Effectivity by MSN 0041 0045 0047 0053 0055 0075 0083-0085 0095 0100-0101 0105 0107 0116-0117 0123-0126 0129 0134 0139 0141 0147 0149-0152 0154-0155 0157 0173 0175 0180 0183-0184 0189-0190 0196 0199-0200 0203-0204 0208 0210-0212 0216 0218-0220 0227 0234-0236 0239 0247 0249-0250 0255-0256 0259 0261 0265 0274 0277 0289 0292 0299 0302 0304 (3) 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. OPERATOR MSN 69X 0095 DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 1 7

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# @A300 SERVICE BULLETIN
OPERATOR MSN ABR 0152 0184 0189 0199 0208 0219 0220 0234 0236 0250 0259 0274 0289 AFG 0180 0190 C2A 0211 0261 DHL 0084 0085 0141 0149 0249 0265 F2I 0083 0235 IAW 0239 IRA 0139 0151 0173 0256 0299 0302 IRM 0055 0175 0204 KYE 0053 0100 0216 KZU 0041 0101 0117 MIX 0125 0134 0157 0196 0203 0218 MNB 0123 0212 0277 0292 0304 MNG 0047 MSR 0200 0255 NTR 0124 0155 P2A 0116 0150 RUN 0075 0105 0107 0147 0154 0183 SOP 0126 TNO 0045 0210 0227 0247 TSY 0129 (4) Configuration by MSN MSN CONFIGURATION 0041 0045 0047 0053 0055 0075 0083 0084 0085 0095 0100 0101 0105 0107 0116 0117 0123 0124 0125 0126 0129 0134 0139 0141 0147 0149 0150 0151 0152 0154 0155 0157 0173 0175 0180 0183 0184 0189 0190 0196 0199 0200 0203 0204 0208 0210 0211 0212 0216 0218 0219 0220 0227 0234 0235 0236 0239 0247 0249 0250 0255 0256 0259 0261 0265 0274 0277 0289 0292 0299 0302 0304 001

(5) Configuration definition **CONF 001 Config. 001 is valid for all the aircraft given in the effectivity of this Service Bulletin as a standard configuration. (6) Material Effectivity MATERIAL QTY PER A/C SEE NOTES Consumable CMLB01 As required B. CONCURRENT REQUIREMENTS Service Bulletin A300-57-0249.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 2 7

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# @A300 SERVICE BULLETIN
C. REASON (1) History During routine maintenance, two A321 aircraft Left Hand (LH) Main Landing Gear (MLG) Rib 5 forward lugs were found ruptured. These had been previously modified as per Service Bulletin A320-57-1118 under Structural Repair Manual limits (Ref. ARS 57-0029). The analysis of the first event has shown that a sealant discrepancy had led to water ingress and then initiated corrosion, leading to cracking. The investigation of the second event has shown that a remaining defect which was not removed during the repair had propagated, resulting in rupture of the lug. (2) Objective/Action In order to maintain Continued Airworthiness of Single Aisle aircraft, a repetitive Detailed Visual Inspection is introduced by Rev. 01 to Service Bulletin A320-57-1166 for all modified and/or repaired aircraft. Due to the similarity between MLG Rib 5 on A300 aircraft and that of the A320 aircraft family (same design principle for the lug, same material, same modification or repair principles), a repetitive Detailed Visual Inspection (DVI) or Ultrasonic Inspection (SDET) is also introduced by this Service Bulletin for Gear Rib 5 lugs: - Modified by Service Bulletin A300-57-0249 Rev. 00 to 02 - Repaired by Repair Instruction R57240221 Issue A to G. (3) Advantages This repetitive inspection will maintain Airworthiness of all aircraft modified by Service Bulletin and/or repaired by Repair Instruction. (4) Operational/Maintenance Consequences None D. DESCRIPTION NOTE: Operators have a choice to perform either a Detailed Visual Inspection (DVI) or an Ultrasonic Inspection (SDET). Refer to the two separate tasks for each Method. To accomplish this Service Bulletin it is necessary to : Task 570255-832-895-001: METHOD 1 - DETAILED VISUAL INSPECTION (DVI) (1) Do a Detailed Visual Inspection (DVI) Task 570255-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) (1) Do an Ultrasonic Inspection (SDET)
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 3 7

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# @A300 SERVICE BULLETIN
E. COMPLIANCE (1) Classification MANDATORY: Service Bulletin must be accomplished. (2) Accomplishment Timescale Threshold (since Modification/repair embodiment): 2,500 Flight Cycles (FC) Interval for Detailed Visual Inspection (DVI), repetitive inspection: 550 FC Interval for Ultrasonic Inspection (SDET), repetitive inspection: 1,000 FC For aircraft having exceeded the threshold, a grace period is permitted: 550 FC 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 and/or intervals and/or date) given above 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 Organization 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. MANPOWER The manpower estimates given in this Service Bulletin are based on the direct labor cost to do the work. These estimates assume that the work will be done by experienced personnel, and may need to be revised upwards to suit operator’s circumstances. The estimates do not include the time to prepare, plan or inspect the work. Manufacture and procurement of parts and tools, drying times for paints, sealants, etc., and general administration work are also not included.

Task 570255-832-895-001: METHOD 1 - DETAILED VISUAL INSPECTION (DVI) Get Access 1.00 On Aircraft Do a Detailed Visual Inspection (DVI) 1.00 Close-Up 1.00 TOTAL MANHOURS 3.00 ELAPSED TIME (HOURS) 3.00 Task 570255-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) Get Access 1.00 DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 4 7

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# @A300 SERVICE BULLETIN
Task 570255-832-896-001: METHOD 2 - ULTRASONIC INSPECTION (SDET) On Aircraft Do an Ultrasonic Inspection (SDET) 2.00 Close-Up 1.00 TOTAL MANHOURS 4.00 ELAPSED TIME (HOURS) 4.00 H. WEIGHT AND BALANCE Not Changed I. ELECTRICAL LOAD DATA Not Changed J. REFERENCES

Aircraft Maintenance Manual (AMM) 06-21-00 32-00-00 32-12-11 Consumable Material List (CML) Elec. Std. Practices Manual (ESPM) 20-55-00 Non Destructive Test Manual (NTM) 57-42-11 K. PUBLICATION AFFECTED None L. INTERCHANGEABILITY/MIXABILITY Not Applicable M. SPARES None

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 5 7

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# @A300 SERVICE BULLETIN

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# @A300 SERVICE BULLETIN
2. MATERIAL INFORMATION **CONF ALL A. MATERIAL - PRICE AND AVAILABILITY (1) Procurement Addresses None (2) Price and Availability None B. INDUSTRY SUPPORT INFORMATION AIRBUS will not provide industry support for accomplishment of this Service Bulletin. C. LIST OF COMPONENTS No Kit D. LIST OF MATERIALS - OPERATOR SUPPLIED (1) Consumable Materials Consumable CMLB01 ITEM DESCRIPTION REFERENCE TO CML MAT. No. QTY PER A/C SEE NOTES Solvent General Purpose 11-026 As required Lint-Free Cotton Cloth 19-003 As required (2) Components None (3) Equipment None E. PARTS TO BE RE-IDENTIFIED BY OPERATOR None F. TOOLING (1) Tooling - Price and Availability None (2) Tools None DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 7 7

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# @A300 SERVICE BULLETIN (3) Special Tools Refer to NTM 57-42-11, Part 4 and Repair Instruction R57240425 for special tooling information.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 8 7

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# @A300 SERVICE BULLETIN
3. ACCOMPLISHMENT INSTRUCTIONS Task 570255-832-895-001 - METHOD 1 - DETAILED VISUAL INSPECTION (DVI) 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 ESPM 20-55-00. Task Associated Data Zone 733 743 Manpower TOTAL MANHOURS 3.00 ELAPSED TIME (HOURS) 3.00 A. GENERAL (1) Subtask 570255-910-401-001 - STANDARD PRACTICES Manpower Resources Skills AIRFRAME References Aircraft Maintenance Manual (AMM) 06-21-00, Page Block 001 Consumable Material List (CML) (a) For the specification of materials (Mat. No.) given in this Service Bulletin (Refer to Consumable Materials List (CML). (b) For the identification of zones (Refer to AMM 06-21-00, Page Block 001).

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 9 7

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# @A300 SERVICE BULLETIN (2) Subtask 570255-839-401-001 - ADMINISTRATIVE Manpower Resources Skills AIRFRAME (a) Write in the applicable aircraft records that you have done all the work given in this Service Bulletin. B. PREPARATION (1) Subtask 570255-941-401-001 - JOB SET-UP Work Zones and Access Panels Zone Access/Work location 733 743 Manpower Resources Skills AIRFRAME Material necessary to do the job Consumable CMLB01 ITEM DESCRIPTION REFERENCE TO CML MAT. No. QTY PER A/C SEE NOTES Solvent General Purpose 11-026 As required Lint-Free Cotton Cloth 19-003 As required References Aircraft Maintenance Manual (AMM) 32-00-00, Page Block 301 32-12-11, Page Block 301 (a) Make sure that the ground safety locks are in position on the MLG (Refer to AMM 32-00-00, Page Block 301). (b) Open the MLG doors (Refer to AMM 32-12-11, Page Block 301). (c) Put the access platforms in position at zones 733 and 743. (d) Clean the inspection area with: Lint-Free Cotton Cloth 19-003 As required

Made moist with: Solvent General Purpose 11-026 As required

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 10 7

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# @A300 SERVICE BULLETIN
C. PROCEDURE (1) Subtask 570255-220-401-001 - Do a Detailed Visual Inspection (DVI) Manpower Resources Manhours 1.00 Minimum number of person 1 Subtask elapsed time 1.00 Skills AIRFRAME References Fig. A-UBAAA Detailed Visual Inspection (DVI) of the MLG Support Rib 5 Lugs Sheet 01 Fig. A-UFAAA Inspection Flowchart Sheet 01
Refer to Fig. A-UFAAA Sheet 01 and Fig. A-UBAAA Sheet 01

. (a) Do a Visual inspection of the forward lug. Carefully examine the "visible area" and the forward and aft faces of the lug for cracks. NOTE: When you do the inspection, look for cracks between the: - 1.00 o’clock and 5.00 o’clock positions on the aft face of the Gear Rib 5 forward lug (carefully examine the 4.00 o’clock position) - 7.00 o’clock and 11.00 o’clock positions on the forward face of the Gear Rib 5 forward lug. (b) If you find a crack(s) contact AIRBUS for instructions before the next flight, use the INSPECTION REPORTING FORM . (c) If there are no cracks, report Nil findings to AIRBUS. Use the INSPECTION REPORTING FORM . Go to SUBTASK 570255-942-401 001 CLOSE-UP and repeat the inspection within 550 FC. D. TEST None E. CLOSE-UP (1) Subtask 570255-942-401-001 - CLOSE-UP Manpower Resources Skills AIRFRAME

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 11 7

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# @A300 SERVICE BULLETIN
References Aircraft Maintenance Manual (AMM) 32-00-00, Page Block 301 32-12-11, Page Block 301 (a) Make sure that the work areas are clean and clear of tools and other items of equipment. (b) Remove the ground safety locks from the MLG (Refer to AMM 32-00-00, Page Block 301). (c) Remove the access platforms. (d) Close the MLG doors (Refer to AMM 32-12-11, Page Block 301).

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 12 7

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# @A300 SERVICE BULLETIN
Task 570255-832-896-001 - METHOD 2 - ULTRASONIC INSPECTION (SDET) 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 ESPM 20-55-00. Task Associated Data Zone 733 743 Manpower TOTAL MANHOURS 4.00 ELAPSED TIME (HOURS) 4.00 A. GENERAL (1) Subtask 570255-910-402-001 - STANDARD PRACTICES Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 06-21-00, Page Block 001 Consumable Material List (CML) (a) For the specification of materials (Mat. No.) given in this Service Bulletin (Refer to Consumable Materials List (CML). (b) For the identification of zones (Refer to AMM 06-21-00, Page Block 001). (2) Subtask 570255-839-402-001 - ADMINISTRATIVE Manpower Resources Skills NON SPECIFIC

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 13 7

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# @A300 SERVICE BULLETIN (a) Write in the applicable aircraft records that you have done all the work given in this Service Bulletin. B. PREPARATION (1) Subtask 570255-941-402-001 - JOB SET-UP Work Zones and Access Panels Zone Access/Work location 733 743 Manpower Resources Skills AIRFRAME Material necessary to do the job Consumable CMLB01 ITEM DESCRIPTION REFERENCE TO CML MAT. No. QTY PER A/C SEE NOTES Solvent General Purpose 11-026 As required Lint-Free Cotton Cloth 19-003 As required References Aircraft Maintenance Manual (AMM) 32-00-00, Page Block 301 32-12-11, Page Block 301 (a) Make sure that the ground safety locks are in position on the MLG (Refer to AMM 32-00-00, Page Block 301). (b) Open the MLG doors (Refer to AMM 32-12-11, Page Block 301). (c) Put the access platforms in position at zones 733 and 743. (d) Clean the inspection area with: Lint-Free Cotton Cloth 19-003 As required

Made moist with: Solvent General Purpose 11-026 As required

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 14 7

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# @A300 SERVICE BULLETIN
C. PROCEDURE (1) Subtask 570255-832-401-001 - Do an Ultrasonic Inspection (SDET) Manpower Resources Manhours 2.00 Minimum number of person 1 Subtask elapsed time 2.00 Skills AIRFRAME References Non Destructive Test Manual (NTM) 57-42-11 Part 4 Fig. A-UCAAA Ultrasonic Inspection (SDET) of the MLG Support Rib 5 Lugs Sheet 01 Fig. A-UFAAA Inspection Flowchart Sheet 01
Refer to Fig. A-UFAAA Sheet 01 and Fig. A-UCAAA Sheet 01

. (a) Do an Ultrasonic Inspection (SDET) of the forward lug (Refer to NTM 57-42-11 Part 4). NOTE: When you do the Ultrasonic Inspection (SDET) look for indications within the scan area. Refer to Fig. A-UCAAA Sheet 01

. (b) If you find an indication contact AIRBUS for instructions before the next flight, use the INSPECTION REPORTING FORM . (c) If there are no indications, report Nil findings to AIRBUS. Use the INSPECTION REPORTING FORM . Go to SUBTASK 570255-942-402 001 CLOSE-UP and repeat the inspection within 1000 FC. D. TEST None E. CLOSE-UP (1) Subtask 570255-942-402-001 - CLOSE-UP Manpower Resources Skills AIRFRAME References Aircraft Maintenance Manual (AMM) 32-00-00, Page Block 301 32-12-11, Page Block 301

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 15 7

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# @A300 SERVICE BULLETIN (a) Make sure that the work areas are clean and clear of tools and other items of equipment. (b) Remove the ground safety locks from the MLG (Refer to AMM 32-00-00, Page Block 301). (c) Remove the access platforms. (d) Close the MLG doors (Refer to AMM 32-12-11, Page Block 301).

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 16 7

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# @A300 SERVICE BULLETIN

**CONF ALL

DETECTED?

ACTION BEFORE FOR FURTHER

QUESTION ACTION FINDING NO YES

CONTACT AIRBUS

NEXT FLIGHT TO AIRBUS FINDINGS REPORT NIL EMBODIED SB 57−0249 REV 00 TO 02 FOR MLG RIB 5 FWD LUGS THAT HAVE:

INSTRUCTION R57240221 ISSUE A TO G INCORPORATED REPAIR OR

ULTRASONIC (SDET): PERFORM NDT

THRESHOLD GRACE PERIOD: INTERVAL: THRESHOLD: 550 FC 1000 FC 2500 FC VISUAL INSPECTION (DVI): PERFORM DETAILED

THRESHOLD GRACE PERIOD: INTERVAL: THRESHOLD: 550 FC 550 FC 2500 FC

OR

A_SB_570255_7_FAAA_01_04 CRACK/INDICATION

Figure A-UFAAA - Sheet 01 Inspection Flowchart
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 17 7

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# @A300 SERVICE BULLETIN

**CONF ALL

VISIBLE AREA GEAR RIB AFT LUG

GEAR RIB FORWARD LUG

VIEW ON FWD FACE OF THE FWD LUG AREA VIEW ON AFT FACE OF THE FWD LUG AREA GEAR RIB FORWARD LUG 12

6 3 9 11 10
8 7 5 4 2 1 12

6 3 9 11 10
8 7 5 4 2 1

12

6 3 9 11 10
8 7 5 4 2 1

12

6 3 9 11 10
8 7 5 4 2 1 REAR SPAR INNER



### A LH SHOWN RH SIMILAR



## A

A_SB_570255_7_BAAA_01_00 Figure A-UBAAA - Sheet 01 Detailed Visual Inspection (DVI) of the MLG Support Rib 5 Lugs
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 18 7

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# @A300 SERVICE BULLETIN

**CONF ALL

VIEW ON AFT FACE OF THE FWD LUG AREA GEAR RIB FORWARD LUG 12

6 3 9 11 10
8 7 5 4 2 1 12

6 3 9 11 10
8 7 5 4 2 1 REAR SPAR INNER



### A LH SHOWN RH SIMILAR

A_SB_570255_7_CAAA_01_00 

## A **B**
**FWD INBD**  SCAN MARKER GUIDE

SCAN AREA

LOCATE THE SCAN MARKER GUIDE ON THE LOWER EDGE OF THE LUG AS SHOWN 

### B

Figure A-UCAAA - Sheet 01 Ultrasonic Inspection (SDET) of the MLG Support Rib 5 Lugs
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 19 7

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# @A300 SERVICE BULLETIN

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# @A300 SERVICE BULLETIN INSPECTION REPORTING FORM **CONF ALL Use this Inspection Reporting Form to inform AIRBUS of any cracks found.

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# @A300 SERVICE BULLETIN INSPECTION REPORTING FORM

**CONF ALL

DATE OF INSPECTION: FLIGHT CYCLES: FLIGHT HOURS: OPERATOR: SERVICE BULLETIN NUMBER:
A/C MSN OR REGISTRATION:

YES/NO SHOW POSITION OF FINDING(S) LH WING RH WING RETURN TO:

FAX: +33(0)5 61 93 36 14

LH MLG RIB 5 RH MLG RIB 5 A300−57−0255 AIRBUS C/O SEES2 1 ROND POINT MAURICE BELLONTE 31707 BLAGNAC CEDEX FRANCE

YES/NO SHOW POSITION OF FINDING(S)

FORWARD LUG FORWARD FACE

FORWARD LUG AFT FACE FORWARD LUG FORWARD FACE

FORWARD LUG AFT FACE REPAIR INCORPORATED: DATE AND FC/FH: MOD/SB INCORPORATED: DATE AND FC/FH: TYPE OF INSPECTION: 1. INSPECTION REPORT

NO./ISSUE: NO./ISSUE: DVI US

A_SB_570255_7_AAAA_01_02 Figure A-UAAAA - Sheet 01 Inspection Reporting Form
DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 2 7

Printed in FRANCE © AIRBUS S.A.S. 2007. All rights reserved.

# @A300 SERVICE BULLETIN REPORTING SHEET 

### TITLE: WINGS - STRUCTURE - INSPECTION OF MAIN LANDING GEAR SUPPORT RIB 5 LUGS MODIFICATION No.: None Please complete the appropriate item (A or B): A - SB WILL BE embodied YES/NO (if NO please comment) If YES, aircraft concerned (as per SB effectivity by default) and planned dates (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 this SB): If information is needed prior to next normal revision or prior to SB embodiment, please indicate required service(s): Either: Modification Operational Impact (MOI), if available YES/NO Or : Intermediate revision YES/NO Important Information: 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. 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.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 1 7

Printed in FRANCE © AIRBUS S.A.S. 2007. All rights reserved.

# @A300 SERVICE BULLETIN 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 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 4321 - Quality rating of the Accomplishment Instructions 4321 - Quality rating of the Illustrations 4321 - 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 Operator Supplied X Mod/Inspection X Manpower X Industry support X Test X References X Re-identification X Close-Up X Publication X Tooling X Illustrations Comments:

Operator: Date: Name/Title: Please return this form to: AIRBUS CUSTOMER SERVICES DIRECTORATE 1 Rond Point Maurice Bellonte 31707 BLAGNAC CEDEX FRANCE Attn : SEM4 Service Bulletins Management FAX : (33) 5 61 93 42 51 Or via your Resident Customer Support Office.

DATE: Jan 13/12 SERVICE BULLETIN No.: A300-57-0255 REVISION No.: 00 - Jan 13/12 Page: 1 7

Printed in FRANCE © AIRBUS S.A.S. 2007. All rights reserved.