NTSB Identification: FTW03LA004.
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Accident occurred Wednesday, October 02, 2002 in Marmaduke, AR
Probable Cause Approval Date: 11/25/2003
Aircraft: Air Tractor AT-400, registration: N155HF
Injuries: 1 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

During the aerial application flight, two fields were being sprayed from east to the west with a set of power lines running north and south between the fields. The pilot would fly the airplane over the power lines and then descend to spray the field. During the accident swath descent to spray the east field, the airplane struck the ground. The pilot and local authorities reported that the winds were "strong" from the southwest. The weather observation facility, located approximately 22 nautical miles southwest of the accident site, reported the wind from 250 degrees at 4 knots, visibility 10 statute miles, few clouds at 4,000 feet agl and a broken ceiling at 5,500 feet agl, temperature 31 degrees Celsius, dew point 22 degrees Celsius, an altimeter setting of 30.01 inches of Mercury, and towering cumulus clouds in all quadrants.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's failure to maintain aircraft control. A contributing factor was the towering cumulus in all quadrants.

Full narrative available

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