What happened
During an aerial application flight, an unspecified aircraft collided with the terrain while spraying Roundup RT on a flax field. The field contained kochia weeds approximately 4 feet tall and flax measuring between 18 and 20 inches.
The pilot was performing his second load of the day on this specific field and had been using flags to mark the locations where the chemical spray was activated. While flying over wires, the pilot observed what he believed to be a flag positioned directly in line with his current pass.
The aircraft was equipped with a Satloc GPS marking system featuring a light bar located between the fuel tank and the chemical tank. This system is designed to blink if the spray is turned on for a pass that has already been completed. As the pilot looked at the blinking light bar, the aircraft experienced a lurch as the wheels made contact with either the weeds or the flax crop.
Upon impact, the movement caused the chemical within the tank to slosh out of the top of the tank, covering the windshield. The pilot maintained a nose-up attitude, and the airplane subsequently settled into the field. The pilot was not injured.