Accident Sequence
During a flight training session in preparation for a commercial pilot check ride, a flight instructor directed a private pilot to perform a short field takeoff. After the climbout, the airplane encountered minor turbulence with some fluctuation in airspeed. The instructor then instructed the private pilot to execute a short field landing. On the final approach leg, the private pilot selected an aiming point just prior to the start of the runway to begin the flare. The approach appeared normal until the airplane suddenly sank, impacting the ground approximately 10 feet before the runway. The airplane subsequently struck the lip of the runway, bounced, and impacted the runway hard on its landing gear.
Postflight Examination
A postflight examination of the airplane revealed a flat nose landing gear strut. No mechanical anomalies were noted with the airplane.
Winds and Conditions
Winds were from straight ahead at 12 knots, gusting to 20 knots. The private pilot reported that due to the proximity of the ground and the speed at which the sink occurred, no recovery techniques could be applied.