Accident Air Tractor Inc AT-502B N648LA, Friday 6 March 2009
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Date:Friday 6 March 2009
Time:11:25 LT
Type:Silhouette image of generic AT5T model; specific model in this crash may look slightly different    
Air Tractor Inc AT-502B
Registration: N648LA
MSN: 502B-0649
Year of manufacture:2002
Total airframe hrs:2092 hours
Engine model:P&W Canada PT6A-34AG
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Location:Harrold, South Dakota -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Tea, SD (Y14)
Destination airport:Harrold, SD (5G3)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The pilot stated that he had been established in cruise flight at 4,500 feet mean sea level for the approximately 45-minute cross-country flight. As he neared the destination airport, he descended to about 100 feet above ground level (agl) in order to view some winter wheat fields for the upcoming agricultural spraying season. As he leveled off, he observed increasing fog along his route of flight. He began a 180-degree turn to reverse course and intended to divert to an intermediate airport when the airplane impacted a high-tension power line. The airplane severed one of the lines and subsequently impacted an adjacent farm field. The pilot reported no failures or malfunctions associated with the airplane prior to the collision with the power line. The pilot report weather conditions at the time of the accident as an obscured ceiling about 800 feet agl, with 2 miles visibility in fog. Winds were light and variable, and there was no precipitation.

Probable Cause: 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.

Accident investigation:
Investigating agency: NTSB
Report number: CEN09CA194
Status: Investigation completed
Duration: 3 months
Download report: Final report




Revision history:

04-Oct-2022 07:36 ASN Update Bot Added

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