Airframe event involving a Sindlinger HH-1, VH-AFW, Serpentine, Western Australia, on 20 November 1993

The pilot was conducting a test flight as part of the certification process required by the Civil Aviation Authority. Positive gear down and locked indications were obtained during the downwind leg of the circuit. As the aircraft touched down the pilot detected a settling of the right main landing gear and elected to go around. Inspection from the ground confirmed that there was a fault with the right landing gear. The pilot adjusted his approach so that the right gear touched down at a low speed. The gear leg collapsed on touch down and the aircraft slewed off the runway. It has not been determined why the landing gear collapsed.