Aerial application aircraft impacts corn crop during spray pass

Casualties unknown • Brandon, WI, US

A part 137 aerial application aircraft sustained substantial damage after impacting a corn crop and terrain during a low-level spray maneuver.

What happened

During an aerial application mission, a part 137 aircraft was performing a spray pass over a field. While descending over a treeline on a southbound heading, the pilot encountered moderate turbulence. The pilot reported that approximately 70 gallons of chemical remained in the tanks at the time of the incident. Following the encounter with turbulence, the pilot was unable to arrest the descent before the aircraft made contact with the corn crop. The aircraft continued its descent, resulting in the nose impacting the ground before skidding to a stop.

Findings

At the time of the accident, weather conditions included winds from the south at 9 knots, gusting to 14 knots, and a temperature of 88 degrees Fahrenheit. The pilot reported that there was no mechanical malfunction of the airplane prior to the impact with the terrain.

Probable cause

The pilot was unable to stop the aircraft's descent following an encounter with moderate turbulence during a spray pass.

Frequently asked questions

What happened in the 2003-08-19 Piper PA-25 accident near Brandon, WI?

A part 137 aerial application aircraft sustained substantial damage after impacting a corn crop and terrain during a low-level spray maneuver.

What aircraft was involved and where did it happen?

The accident on 2003-08-19 involved a Piper PA-25, registration N4346Y, at Brandon, WI.

What was the probable cause of the accident?

The pilot was unable to stop the aircraft's descent following an encounter with moderate turbulence during a spray pass.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20031027X01813. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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