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revealed that repairs available in Ref.1 were no longer applicable to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 14
E-mail: sebastien.s.faure@airbus.com

Best Regards,

P. BOUCHERAT

VICE PRESIDENT A300/A310/A300-600 PROGRAMME

CUSTOMER SERVICES DIRECTORATE

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