Accident Sequence
A certified flight instructor (CFI) was conducting a training flight with a rated student pilot. During the landing rollout, the CFI took positive control of the aircraft's flight controls from the student. He then advanced the throttles to initiate a touch-and-go takeoff. While the CFI was focused on the maneuver, the rated student pilot raised the landing gear control lever to the up position without the CFI's knowledge.
As the CFI reached down to retract the flaps, the nose of the aircraft pitched downward, and the airplane subsequently collided with the terrain.
Probable Cause
The source does not explicitly state a probable cause for the accident.
Background
The flight was a training mission with a CFI and a student rated to perform takeoffs and landings. The specific circumstances leading to the student's action and the instructor's response are described in the narrative. No further details about the aircraft type, registration, engine count, date, operator, location, occupants, injuries, or damage items were provided in the source material.