On August 7, 2003, approximately 1230 mountain daylight time, a Woods Bushby Mustang II, N74ST, was substantially damaged during a hard landing at Logan-Cache Airport (LGU), Logan Utah. The private pilot, the sole occupant on board, was not injured. Visual meteorological conditions prevailed. No flight plan had been filed for the cross-country flight being conducted under Title 14 CFR Part 91. The flight departed Casper, Wyoming, at approximately 0900. According to the FAA Inspector who went to the scene, the pilot was landing on runway 17. Just after touchdown, a gust of wind lifted the aircraft off the runway. The aircraft came down and bounced three to four times. The left wheel, axle, and brake assembly separated, and the airplane slid on the left wing. The propeller was damaged and the left main wing spar was bent. According to the Logan Aviation Routine Weather Report (METAR) at 1251, the wind was from 190 degrees at 14 knots, gusting to 19 knots.