Incident Overview
A student pilot was conducting a takeoff under the supervision of an instructor pilot. According to the instructor, as the aircraft passed the crosswind runway intersection, approximately midway down the runway, the airspeed indicator showed 40 knots indicated airspeed (KIAS).
Sequence of Events
After crossing the intersection, the aircraft began to lift off but subsequently returned to the grass. At that point, the airspeed indicator again read 40 KIAS. The instructor pilot then directed the student to abort the takeoff. The instructor reported taking control of the aircraft just as they passed the end of the runway.
Final Position
The aircraft subsequently crossed one ditch and came to a stop after striking a second ditch.
Post-Incident Inspection
An inspection of the aircraft revealed no anomalies.