According to the pilot he was participating in a spot landing competition at the airport. After the airplane main landing gear touched down on runway 05 the airplane began to drift slightly to the right. He applied left rudder and brake to realign the airplane with the runway and to also counteract a “quartering tailwind”. He also advanced the throttle to assist in centering the airplane with the runway, but the engine “stuttered.” He retracted the throttle and continued to apply left rudder and aileron; however, the airplane departed the right side of the runway and impacted a hangar resulting in substantial damage to the right wing. Videotape taken by a spectator of the landing competition corroborates the pilot’s description of the accident. The pilot reported no preimpact mechanical malfunctions or anomalies that could have precluded normal operation. Wind reported at an airport located about 5 miles east of the accident site was from 200 degrees at 08 knots, gusting to 19 knots.