Event Description
A student pilot experienced a power response anomaly during his second takeoff, describing the sensation as akin to 'an automobile automatic transmission slipping.' The propeller appeared to alternately 'bite' and then lose traction. When the pilot determined that available power was insufficient to maintain level flight, he attempted a forced landing in a field.
Post-Crash Examination
Following the accident, FAA inspectors conducted a postcrash examination of the airframe and engine. No abnormalities were detected in either component. The propeller governor was subsequently removed and shipped to the manufacturer for detailed analysis.
Propeller Governor Analysis
Disassembly inspection of the propeller governor revealed the presence of enough sludge to impede free movement of the flyweight assembly. After cleaning and reassembly, the governor operated satisfactorily and met factory specifications. No other mechanical issues were identified.