Incident Overview
During a cruise flight at approximately 1200 feet and 2300 RPM, the pilot experienced a loss of engine power. The aircraft was subsequently ditched about 100 yards offshore in ocean waters. The pilot reported the power loss, and the aircraft came to rest in the water.
Investigation Findings
Post-accident examination revealed that both fuel tanks contained sufficient fuel. The fuel selector was in the on position, the fuel screen was clean, and fuel was present in the carburetor bowl. The ignition system was found to be intact. Disassembly of the engine showed no evidence of any internal failure or malfunction.
Environmental Conditions
The aircraft was operating at a power setting and altitude that, according to performance charts for temperature and humidity, is conducive to carburetor venturi icing. This suggests that atmospheric conditions may have contributed to the power loss, although the investigation did not find any mechanical issues.
Conclusion
The evidence indicates that the engine lost power without any identified mechanical defect. The operating conditions were favorable for carburetor icing, which is consistent with the sudden loss of engine power.