Agricultural aircraft contacts power lines during spray operation

Casualties unknown • Brownfield, TX, US

An agricultural aircraft struck high-voltage power lines while performing a turn over a field, resulting in a post-impact fire that destroyed the aircraft.

What happened

The accident occurred at approximately 1700, roughly two and a half hours before sunset. The pilot was engaged in agricultural spraying operations, following an east-west pattern across a field. A 115,000-volt power line, running north-south, was located along the eastern boundary of the area being sprayed.

After completing a spray run toward the east, the pilot attempted to turn the aircraft to a westerly heading to re-enter the field. During this maneuver, the airplane made contact with a power transmission wire and a static wire, severing both. Following the contact, the aircraft impacted the ground approximately 500 feet west of the power line. The impact was followed by a fire that completely consumed the airplane.

Findings

Toxicological analysis performed on a blood sample revealed a cyanide concentration of 4.23 ug/ml, which investigators determined was likely a consequence of the post-crash fire. Testing for alcohol, drugs, and carbon monoxide returned negative results.

Frequently asked questions

What happened in the 1999-10-05 Piper PA-36-285 accident near Brownfield, TX?

An agricultural aircraft struck high-voltage power lines while performing a turn over a field, resulting in a post-impact fire that destroyed the aircraft.

What aircraft was involved and where did it happen?

The accident on 1999-10-05 involved a Piper PA-36-285, registration N4241U, at Brownfield, TX.

What was the probable cause of the accident?

The pilot's failure to maintain clearance with power wires while maneuvering during an aerial application flight. A factor was the sunglare.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X19950. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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