Collision with terrain involving a Air Tractor AT-502B, VH-AWG, 4.1 km south of Pine Point, South Australia, on 20 August 1997

The pilot reported that he was flying an AT502 Air tractor aircraft in calm weather conditions, applying liquid fertiliser to a cereal crop. Whilst conducting a procedure turn for the clean-up run, he felt one wing drop slightly followed by the other wing. After the third wing drop, he managed to maintain wings level, but the aircraft seemed to be in turbulence and continued to descend. The aircraft struck the ground with the right wing and broke up with the pilot sustaining leg injuries.

The pilot reported that the turn was conducted close to the stall, and he considered that the turbulence experienced was created by the aircraft during the turn.