Flight Details
A flight instructor (CFI) with a total of four hours as a CFI was conducting an instructional flight with a student pilot. The student pilot had performed three touch-and-go landings to runway 21. The surface winds at the airport were from 200 degrees at 12 knots.
Approach and Landing
The CFI reported that the student had not maintained airspeed on previous approaches, resulting in a high sink rate. The CFI then instructed the student to conduct a short-field approach with an obstacle. The student completed the before-landing check, lowered the flaps to the first notch, and turned onto the base leg. Subsequently, the student lowered the flaps to the full down position, turned final, and continued the approach.
Collision with Runway
As the airplane descended to approximately 25 feet above the runway, the airspeed decreased, and the airplane entered a vertical rate of descent. The student pilot did not apply power. The CFI reached over to add power but missed the throttle and instead flared the airplane. The airplane then collided with the runway hard, resulting in structural damage to the airframe. The CFI reported no mechanical problems with the airplane.