On June 7, 1995, about 1720 eastern daylight time, a Cessna 172P, N129EP, registered to Three Wings Aviation, operating as a 14 CFR Part 91 instructional flight, experienced an on-ground loss of control on landing rollout, and crashed at the Albert Whitted Municipal Airport, St. Petersburg, Florida. Visual meteorological conditions prevailed and no flight plan was filed. The airplane sustained substantial damage. The flight instructor and student pilot reported minor injuries. The flight originated from Clearwater, Florida, about 10 minutes before the accident. The flight instructor stated the student pilot was making a crosswind landing to runway 18 with a right crosswind. On landing rollout, they both felt a "push of air", and the airplane veered to the right. There was no indication that the winds were going to change or any reports of gusts in the area. He informed the student pilot that he had the flight controls. The airplane went off the right side of the runway and nosed over. Review of weather information obtained from Albert Whitted Municipal Airport, St. Petersburg, Florida, for the time of the accident revealed no recorded record of turbulence, downdrafts, gusts, or windshear.