Accident Overview
An aircraft conducting aerial spraying operations experienced a loss of power and struck powerlines during an emergency landing, resulting in a crash.
Sequence of Events
The pilot reported that while spraying, oil began covering the windshield. He initiated a climb and dumped the chemical load. Shortly thereafter, the propeller separated from the aircraft. During the subsequent forced landing, the tailwheel struck a powerline, and the aircraft touched down in a tail-low attitude.
Examination Findings
Examination of the aircraft revealed that the crankshaft had failed due to fatigue and separated at the oil slinger flange.
Additional Information
The accident occurred during an aerial application mission. No further details about the aircraft type, registration, or operator were provided in the source.