No fatalities

6 Mar 2009: AIR TRACTOR INC AT-502B — Harrold, SD

Harrold, SD, United States

On 6 Mar 2009, an AIR TRACTOR INC AT-502B was involved in an aviation accident near Harrold, SD. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain clearance from the power lines during his turn to reverse course due to weather. Contributing to the accident was the reduced visibility at the time of the accident. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A pilot descending to view winter wheat fields at low altitude encountered increasing fog, initiated a turn, and struck a power line, severing it before impacting a farm field.

Event Details

A pilot on a cross-country flight at 4,500 feet mean sea level for approximately 45 minutes descended to about 100 feet above ground level (agl) to inspect winter wheat fields for the upcoming agricultural spraying season. After leveling off, the pilot observed increasing fog along the route of flight.

Sequence of Events

In response to the developing fog, the pilot initiated a 180-degree turn to reverse course, intending to divert to an intermediate airport. During the turn, the airplane collided with a high-tension power line, severing one of the lines. The airplane subsequently impacted an adjacent farm field.

Pilot Report

The pilot reported no failures or malfunctions with the airplane prior to the collision with the power line.

Weather Conditions

Weather at the time of the accident was reported as an obscured ceiling about 800 feet agl, with 2 miles visibility in fog. Winds were light and variable, and there was no precipitation.

Contributing factors

Causes

Response/compensationAltitude — Not attained/maintainedPilot

Other contributing factors

Effect on operation