On September 28, 1995, about 2015 eastern daylight time, a Cessna 172RG, N9497B, was substantially damaged when it overran the runway during the landing, at the Allegheny County Airport, Pittsburgh, Pennsylvania. The private pilot and passenger were not injured. The personal flight departed from Mount Pocono, Pennsylvania about 1815 destined for Pittsburgh. Visual meteorological conditions prevailed, and an instrument flight rules flight plan was filed for the flight conducted under 14 CFR Part 91. In the NTSB form 6120.1/2, the pilot stated: ...I landed a little fast....I applied hard brakes....I decided that I was going too slow to go around....I applied harder brakes....I realized I would not stop on the runway....After leaving the runway, I felt the plane slowly fall and flutter. We immediately hit a building.... Additionally, under the section of mechanical malfunction failure, the pilot checked "NO". The FAA Inspector's statement stated: ...The Allegheny Tower reported the aircraft landed long on runway 23 near Alpha taxiway with approximately 800 feet remaining from the end of the runway.... ...During an on site inspection of the accident we found initial tire marks at the north end of taxiway Alpha, then the aircraft floated before ground contact at approximately 400 feet of runway remaining, with skid marks continuing down the runway moving to the right of the center line of runway 23. Then leaving the runway when the aircraft fell down a 50 foot hill, landing with the nose striking a small out-building, the left wing striking a trailer, and the right wing striking the hillside on the right side.... According to the Airport Facility Directory runway 23 was a 2534 foot long runway, and there was no visual approach slope indicator. Additionally, at the time of the accident, the winds were reported as calm.