NTSB

The student pilot’s failure to maintain directional control while landing on the snow/slush-covered portion of the runway and the flight instructor’s improper decision to allow the student to make his first solo flight from a snow/slush-covered runway.

The pilot’s failure to maintain airplane control during a go-around. Contributing to the accident was the pilot’s decision to take off after perceiving a rudder issue during taxi operations.

The student pilot’s failure to maintain a proper airspeed and descent rate while conducting a low pass over a snow-covered runway after encountering a downdraft and the flight instructor’s delayed action, which resulted in the wheels contacting the snow and the airplane nosing over.

The rear seat pilot and the student pilot’s failure to see and avoid trees during initial climb following an aborted landing.

The inadvertent engine start of the unoccupied airplane, which resulted in it moving forward and impacting a hangar and an electrical box.

The pilot’s failure to complete a before landing checklist, which resulted in his delayed extension of the landing gear, and his subsequent exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall.

The student pilot’s failure to maintain directional control and the flight instructor’s inadequate remediation during a short-field takeoff, which resulted in impact with a parked airplane.

The fracture of the right main landing gear torque link bolt on landing, which resulted in the landing gear assembly rotating freely, the subsequent loss of directional control, and the landing gear collapsing.