Incident Overview
The pilot of an agricultural aircraft reported that before takeoff, frost was observed on the wings. Despite this, the pilot considered the frost insufficient to be a concern and proceeded with the takeoff. The takeoff was initiated on a 2,500 ft airstrip while the aircraft was loaded with paraquat and water.
Takeoff Sequence and Impact
During the takeoff roll, the pilot stated that the engine did not appear to be developing full power. A slight tailwind was present. To lighten the load, the pilot actuated the dump handle. However, the aircraft struck a 5 ft bank near the end of the airstrip.
Post-Accident Examination
An examination of the aircraft and engine revealed no pre-crash malfunctions or failures. Notable findings included considerable lead deposits on the lower spark plugs. Despite this, the engine operated normally during a run-up check conducted after the incident. Additionally, the propeller control was found positioned less than halfway from the high pitch setting.
Pilot Statement
The pilot stated that the propeller control had been exercised several times before takeoff. He indicated that he may have mistakenly left the propeller control in a high pitch, low RPM position.