Casualties unknown

1984-09-15: Piper PA-25-235 (N7236Z) — Canton, SD

Canton, SD, US

On September 15, 1984, a Piper PA-25-235 (registration N7236Z) was involved in an aviation accident near Canton, SD. Investigators recorded the probable cause as: The pilot's failure to maintain adequate clearance from obstacles due to visual confusion during a low-altitude agricultural operation. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

A pilot conducting a crop dusting operation over an unfamiliar field experienced visual confusion, leading to a controlled collision with overhead wires and subsequent ground contact.

What happened

The incident occurred while the pilot was conducting agricultural aviation operations, specifically a swath run over an unfamiliar cornfield. During the descending approach phase, the pilot reported experiencing a "flashing vision of wires," indicating a momentary visual disturbance or illusion regarding overhead obstacles.

In an effort to avoid striking the perceived wires, the pilot pushed the control stick forward aggressively. This maneuver caused the aircraft to contact a corn crop while in a slight nose-down attitude. Following this initial contact, the aircraft turned approximately 90 degrees to the right. During this turn, the left main landing gear struck the ground, bringing the aircraft to an inadvertent stop.

The investigation

The primary factor identified was the pilot's reaction to a visual anomaly during a low-altitude agricultural operation. The decision to push forward on the controls to avoid perceived wires directly resulted in the aircraft descending into the crop canopy and subsequently losing lateral control, leading to the gear contact and stoppage.

Findings

The accident was caused by the pilot's loss of situational awareness due to visual confusion during a low-level flight operation. The subsequent evasion maneuver was inappropriate for the altitude and environment, resulting in structural damage from ground contact.

Probable cause

The pilot's failure to maintain adequate clearance from obstacles due to visual confusion during a low-altitude agricultural operation.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X41039. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.