Pilot Report
The pilot stated that after takeoff, he remained at approximately 100 feet above ground level and proceeded toward Savage, Montana. He intended to fly over his partner's farm near Savage.
Loss of Engine RPM
Nearly 20 minutes after takeoff, while approaching the partner's farm, the pilot noted a loss of engine RPM. He applied carburetor heat and executed a full-flap landing to the south on an elevated roadway adjacent to an irrigation ditch.
Touchdown and Wind Gust
During touchdown, the pilot observed that engine power was returning but continued the landing. After the aircraft had slowed, a gust of wind lifted the right wing, causing the aircraft to overturn. The pilot estimated wind gusts of up to 20 knots.
Weather Conditions
The temperature was approximately 78 degrees Fahrenheit. The dew point was not determined. The pilot suspected carburetor icing, but this was not verified.