Accident Details
Several witnesses near the accident site observed smoke and fire trailing from the helicopter during an aerial application flight. The pilot also perceived heat and observed smoke in the cockpit, which was followed by a loss of engine power. A witness, who was driving a truck adjacent to the cotton field, reported seeing the helicopter flying approximately 20–25 feet above the ground when it "suddenly fell at a slight angle, fell from the sky, and hit the ground, sending white smoke and dust."
Pilot's Assessment
Following the accident, the pilot indicated his belief that the spray system had malfunctioned, causing chemicals to be introduced into the engine.
Examination of the Helicopter
A thorough examination of the helicopter and its engine failed to identify a cause for the loss of engine power. The airframe showed no evidence of an in-flight fire, but thermal damage was noted on the spray system.
Cause Determination
The reason for the loss of engine power was not determined.