ALL OPERATOR TELEX - ALL OPERATOR TELEX

SUBJECT: ATA 53 – INSPECTION OF EXISTING SRM REPAIRS ON CROSS BEAM FLANGE AT FRAMES 11 AND 12A OUR REF.: AOT A310-53A2135 dated 14 MAR 2012

1. AIRCRAFT AFFECTED This AOT is applicable to all A310 models. 2. REFERENCED DOCUMENTATION Ref.1: A310 SRM 53-12-15 PB201 figures 204, 205 and 206 3. REASON 3.1 BACKGROUND In the frame of the Extended Service Goal (ESG) activity, all existing SRM repairs were reviewed. This analysis, which consisted in new static and fatigue calculations, revealed that repairs available in Ref.1 were no longer applicable to some specific areas. Ref.1 was revised accordingly in 2008 to exclude these areas. Further to the implementation of the Aging Aircraft Safety Rule (AASR) project, it is required to inspect these SRM repairs and to perform appropriate corrective actions.
3.2 AIM The purpose of this AOT is to call for: * An early one-time inspection of the cross beams flange located at: - FR11 between Y-520 and Y+520 and outboard from Y+/-1317.5 - FR12A between Y-227.5 and Y+227.5 * The accomplishment of corrective actions if repairs previously applied as per Ref.1 before 2008 are detected at above mentioned locations. 4. SHORT TERM ACTION 4.1 PLANNING AND MANPOWER 4.1.1 ACCOMPLISHMENT TIMESCALE In case of repairs previously applied as per Ref.1 at locations given in paragraph 4.2.2, appropriate corrective actions must be embodied within 36 months from the receipt date of this AOT. Therefore, Airbus recommend to perform the one-time inspection described in paragraph 4.2.2 at next suitable opportunity. The potential findings shall be reported to Airbus for detailed analysis. Airbus will individually come back with appropriate corrective actions. 4.1.2 MANPOWER The manpower estimates given in this AOT 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.One man-hour (MH) is required to perform the one-time inspection described in paragraph 4.2.2. The total MH and elapsed time (ET) required to apply the corrective actions will depend on the inspection results and will be provided on a case-by-case basis. 4.2 DESCRIPTION 4.2.1 JOB PREPARATION AND ACCESS Open the avionics compartment access door located in the cockpit, referenced in A310 IPC 53-11-21 figure 5. 4.2.2 INSPECTION INSTRUCTIONS (1)Perform a General Visual Inspection (GVI) of the cross beams flange located at: * FR11 between Y-520 and Y+520 and outboard from Y+/-1317.5 * FR12A between Y-227.5 and Y+227.5 Above mentioned locations refer to the excluded areas detailed in Ref.1. (2)If a repair, previously applied as per Ref.1 or unidentified repair procedure, is detected at these locations, please contact Airbus to get further instructions: SEER1/SEER2/SEER3 Customer Services Fax: +33 (0)5 61 93 28 73 Mailto: - region1.StructureRepairSupport@airbus.com - region2.StructureRepairSupport@airbus.com - region3.StructureRepairSupport@airbus.com (3)If no repair is detected, no further action is required. 4.2.3 JOB CLOSE UP Close the avionics compartment access door located in the cockpit, referenced in A310 IPC 53-11-21 figure 5. 4.2.4 TOOLING No specific tooling is required to perform the GVI described in paragraph 4.2.2.
5. AOT APPROVAL The technical content of this document is approved under the authority of DOA nr. EASA.21J.031. 6. REPORTING/ACKNOWLEDGEMENT Operators are requested to acknowledge receipt of this AOT within 48 hours after receipt to: Cecile BORDES, SEES E-mail: cecile.bordes@airbus.com Fax number: +33+ (0) 5 61 93 36 14 Questions about this AOT and inspection results with or without findings are to be sent to Airbus Customer Services engineering as soon as possible, after the AOT application, to the attention of: Mr Sebastien FAURE, SEES1 Phone: +33 (0)5 61 93 31 68 Fax number +33 (0)5 61 93 36 14E-mail: sebastien.s.faure@airbus.com Best Regards,
P. BOUCHERAT VICE PRESIDENT A300/A310/A300-600 PROGRAMME CUSTOMER SERVICES DIRECTORATE If you do not need to receive AOT any more, or if other people in your organization need to be added to the distribution, please advise your Airbus Customer Services contact accordingly. AOT’s attachments (if any) can be downloaded from AirbusWorld via AirN@v / Engineering.