Accident Sequence
During the initial climb, as the airplane passed through 100 feet of altitude, the pilot noted a decrease in engine RPM from 2360 to 1700. Efforts to restore full engine power were unsuccessful. In response, the pilot selected full flaps and initiated a landing on the path ahead. During the landing roll, the nose wheel contacted the ground, causing the airplane to flip inverted.
Post-Accident Examination
An examination of the engine revealed the presence of water in the fuel system and within the carburetor. When the engine was subsequently tested across its full power range, it operated normally without any anomalies.
Pilot Statement
The pilot reported that the airplane's position on the ramp prevented proper sumping of the fuel system, which may have contributed to the water contamination.