The pilot reported encountering a gust of wind on landing, which caused the airplane to ground loop. The pilot and three passengers on board were not injured. An examination of the airplane showed the left wing bent aft. The left main landing gear was broken aft as well and the firewall was bent. An examination of the airplanes systems showed no anomalies. Reported wind conditions for the airport 10 minutes after the accident were 180 degrees at five knots. The wind conditions were calm 30 minutes prior to the accident.
