Aviation safety issues and actions

Ayers Corporation S2R-G10 Thrush operating weight

Issue number: AO-2012-049-SI-01
Who it affects: Pilots who operate Thrush aircraft
Issue owner: Statewide Aviation
Operation affected: Aviation: General aviation
Background: Investigation Report AO-2012-049
Date: 23 October 2013

Safety issue description

The Ayers Corporation S2R-G10 Thrush aircraft type had a published maximum take-off weight that was not practical for agricultural use, increasing the risk that pilots would operate the aircraft above the published maximum weight and potentially at unsafe weights.

Proactive Action

Action organisation: Statewide Aviation
Action number: AO-2012-049-NSA-022
Date: 23 October 2013
Action status: Closed

In June 2012, Statewide Aviation, the Australian distributor for Ayres aircraft, in consultation with the Civil Aviation Safety Authority, commenced developing a Supplemental Type Certificate to permit an increase in the maximum take-off weight of a number of Thrush variants, including the S2R-G10, to 10,500 lb (4,673 kg). This certificate is expected to be available to Thrush owners in October 2013.

ATSB response:

The ATSB is satisfied that the action taken by Statewide Aviation will, when implemented, adequately address this safety issue.

Current issue status: Adequately addressed
Status justification: The STC should enable pilots to use a practical and proven weight limit for the S2R-G10 Thrush, and provide any other necessary operational or maintenance restrictions associated with flying at the higher weights.
Last update 08 January 2014