On January 7, 2001, about 1245 Pacific standard time, a Cessna 172K, N78284, sustained substantial damage shortly after landing on runway 07, at the Portland-Troutdale Airport, Troutdale, Oregon. The airplane is owned and operated by Right Aviation of Troutdale, and was being operated as a visual flight rules (VFR) flight under Title 14, CFR Part 91, when the accident occurred. The private pilot, the sole occupant of the aircraft, was not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the round-robin flight. The flight originated from Troutdale approximately 1 hour and 20 minutes prior to the accident. There was no fire and no report of ELT activation. In a written statement to the Federal Aviation Administration, the pilot reported that he landed the aircraft on runway 07. Shortly after touchdown, the pilot exited the runway at taxiway Alpha Two (A-2). While taxing from the runway to A-2, the airplane nosed-over. The aircraft came to rest on its back adjacent to the taxiway. The pilot stated that there were no mechanical difficulties or failures with the aircraft that may have contributed to the accident. The 1253 METAR observation at Troutdale, reported winds from 100 degrees true at 27 knots, gusting to 34 knots.