Primary finding
Probable cause
The student pilot’s inadvertent use of the fuel mixture knob instead of the carburetor heat knob, which resulted in fuel starvation and a subsequent loss of engine power.
Investigator assessment
Analysis narrative
The student pilot was practicing pattern work and while turning onto the base leg of the traffic pattern, inadvertently pulled the mixture knob instead of applying carburetor heat, resulting in a total loss of power. She attempted to restart the engine by pushing the mixture knob back in, however, the propeller had already stopped rotating and the engine did not restart. The student pilot elected to perform a forced landing to a field. During the approach to the field, she realized the airplane was too fast and decided to land in an adjacent field. During the landing, the right wing of the airplane struck a guy wire, which resulted in substantial damage to the airplane. The student pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.