Aviation safety issues and actions

Flight Data Recorder rack

Issue number: AO-2009-012-SI-05
Who it affects: Operators of A340 aircraft
Issue owner: Airbus
Transport function: Aviation: Air transport
Background: Investigation Report AO-2009-012
Issue release date: 16 December 2011
Current issue status: Adequately addressed
Issue status justification:

Airbus has produced a modified rack that will reduce the deflection that permitted the FDR to become unsecured.

Safety issue description

The failure of the digital flight data recorder (DFDR) rack during the tail strike prevented the DFDR from recording subsequent flight parameters.

Proactive Action

Action number: AO-2009-012-NSA-083
Action organisation: Airbus
Date: 15 December 2011
Action status: Closed

On 28 October 2011, Airbus advised that: A new rack (PN S4419F01) has been certified through modification number 56124 and implemented in production line from MSN911 delivered in March 2008. This new rack has geometrical changes and the shock-mounts have been removed. ... it has a stiffening flange which limits the deformations.

ATSB comment:

The ATSB is satisfied that the safety action adequately addresses the safety issue.

Last update 31 January 2014