Accident Overview
A flight instructor reported that a student pilot was performing a soft field takeoff on a grass runway. During the takeoff roll, approximately 1,500 feet down the runway, there was a sudden loss of RPM and airspeed. The instructor did not specify the aircraft type, registration, or other details.
Sequence of Events
According to the instructor, the airplane veered off the left side of the mowed grass strip into taller vegetation at a point about 1,500 feet from the start of the takeoff roll. The ground run continued beyond the end of the runway, crossing an alfalfa field. The airplane subsequently struck a drainage ditch, causing the landing gear to separate from the fuselage.
Post-Accident Examination
A post-accident examination of the powerplant revealed no evidence of mechanical malfunction. Examination of the landing gear tracks confirmed the path of the airplane, indicating it deviated left into taller vegetation before proceeding off the runway.
Conclusion
No probable cause was stated in the investigation report. The event involved a student pilot practicing a soft field takeoff, with a loss of power and airspeed leading to a runway excursion and collision with terrain, resulting in structural damage to the landing gear.