Sequence of Events
The student pilot, who owned the tailwheel-equipped Piper airplane, was receiving instruction in touch-and-go landings from a commercial pilot/flight instructor. During the fourth landing, the student performed a wheel landing from the left seat. The airplane began to drift slightly left of the runway centerline, and the student corrected this drift. According to the instructor, the airplane then encountered a sudden left crosswind while still rolling on the main landing gear tires, causing the aircraft to slide to the right on the runway surface.
The student pilot added full engine power to abort the landing. The instructor, seated in the right seat, announced he had control of the aircraft and attempted to regain control by applying left aileron and left rudder. When the instructor realized the airplane would not become airborne before departing the runway, he reduced engine power to idle. The airplane continued sliding to the right, across a snow-covered grass area, and collided with a Cessna airplane that was taxiing southbound on a parallel taxiway.
Aircraft Information
The Piper airplane did not have brakes installed at the flight instructor's station. Both the Piper and the Cessna sustained damage to their respective right wings and fuselage. The reported wind was variable at 5 knots.