What happened
The flight was originally intended to serve as an aircraft checkout for another instructor. Following some initial air work, the crew proceeded to a nearby airport to conduct practice takeoffs and landings. While on final approach for a practice short field landing, the aircraft experienced an USH-stall. The resulting impact caused the aircraft to land hard and come to rest short of the runway. The force of the impact sheared off the nose wheel and caused the aircraft to nosing over.
The investigation
The flight instructor stated that the purpose of the flight was to perform an aircraft checkout for another instructor. After completing some air work, they moved to a nearby airport to practice takeoffs and landings. During the final approach for a practice short field landing, the aircraft stalled in a manner described as USH-stall. The subsequent hard landing resulted in damage to the nose gear.
Findings
The primary factor leading to the accident was the stall during the final approach phase of a practice short field landing. The stall resulted in a hard landing that exceeded the structural limits of the nose gear, causing it to shear off and the aircraft to nosing over.