The Transportation Safety Board (TSB) of Canada said investigators have not been able to determine why a crop-dusting plane stalled just before a fiery crash in Saskatchewan last summer that killed the pilot.
The board has released its report on the accident that happened on the evening of July 12 near Arborfield, about 260 kilometres northeast of Saskatoon.
The pilot of the single-engine Cessna AGtruck, operated by Clayton Air Service, had just finished spraying a field near Carrot River when he went down in some trees.
Investigators said he was an experienced aviator, the plane had fuel and had been properly maintained, and the weather was not a factor.
They determined that the shallow angle of the impact, little forward speed and no wreckage trail indicated an aerodynamic stall.
But their report concludes the reason for the stall could not be found because of the mangled and burned wreckage, lack of witnesses and no flight data information.
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