19990509004909A

Acft lost control after landing, ran off the rwy, went into a wheat field, and came to rest inverted, other circumstances are unknown. (From .19) on may 9, 1999, at 1940 central daylight time (CDT), a Piper PA-18-L21B, N3VU, operated by a private pilot, sustained substantial damage when on landing, the airplane veered right, off of the runway, and nosed over. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under 14 CFR part 91. No flight plan was on file. The pilot reported no injuries. The local flight originated at the O'Neal Airport, Vincennes, Indiana. The pilot told a federal aviation administration (FAA) inspector that while landing on runway 21 (1,700 x 100) at the O'Neal Airport, he lost control of the airplane. The airplane veered to the right and departed the runway into a wheat field. The pilot told the FAA inspector that the airplane came to rest inverted. The pilot described the weather, at the time of the accident, as clear and no wind. (-23)the pilot stated that he landed approximately half way down the 3500 foot sod runway. After touching down on the main wheels the airplane passed through a soft spot in the runway causing the airplane to veer slightly to the right. While attempting to correct he could not get his heels on the brakes and was concerned about a group of people standing at the end of runway. He was going to cut through the end of the wheat field and stop on an intersecting runway. Once the wheels entered the wheat the airplane rapidly slowed and flipped over onto its back. The speed was 10 miles per hour or less when he flipped over.