What happened
Approximately thirty feet above the ground, immediately following a touch-and-go landing, the aircraft engine experienced a sudden loss of power. In response, the pilot applied carburetor heat, which temporarily restored engine power. However, the power loss recurred shortly thereafter. Unable to maintain flight, the pilot performed a forced landing into a wooded area.
The investigation
Post-accident analysis focused on the mechanical integrity of the engine and the environmental conditions at the time of the incident. Weather data indicated an ambient temperature of 85 degrees Fahrenheit with a dew point of 69 degrees Fahrenheit. This specific combination of high humidity and temperature created atmospheric conditions highly conducive to carburetor icing.
Findings
The sequence of events suggests that carburetor icing was the primary factor in the engine failure. The intermittent nature of the power loss, which responded briefly to the application of carburetor heat but then returned, is characteristic of ice accumulation and partial melting within the carburetor venturi. The environmental data confirmed that conditions were ripe for such icing events, even at relatively high temperatures.
Safety message
Pilots must remain vigilant regarding carburetor icing during all phases of flight, particularly when operating in humid conditions with moderate temperatures. Regular application of carburetor heat as a preventive measure, or immediate response to rough engine operation, is critical for maintaining power and ensuring safe flight operations.