What happened
Prior to departure, the aircraft was moved from a heated hangar to undergo refueling. During this process, moisture was observed on the wings. The aircraft remained outdoors for approximately 40 minutes in conditions characterized by light to medium snow and misty rain. No deicing or anti-icing treatments were applied to the airframe during this period.
During the takeoff roll, the aircraft reached rotation and entered a nose-high attitude. Witnesses observed the plane immediately roll to the left, leading to an impact with the terrain. Physical evidence at the crash site indicated that the left wing struck the runway surface before the nose of the aircraft hit the ground just left of the runway. There were 0 fatalities and 0 injuries reported in the provided text, though the impact was severe.
Findings
Investigation of the aircraft revealed no mechanical failures or engine malfunctions that would have prevented normal flight. While the aircraft was equipped with a Wing and Horizontal Stabilist Anti-Icing System, flight data recorders showed that the system was only activated briefly during the pre-flight checklist and remained in the off position for the duration of the flight. Although the switch was found in the on position after the accident, data suggests it was likely moved back to the off position during the sequence.
At the time of the accident, the temperature was -1°C with freezing mist and snow present. Because the aircraft sat outside for 40 minutes without treatment, it is believed that ice accumulation occurred on the upper wing surfaces, fuselage, and tail. The pilot's operating handbook requires that all aerodynamic surfaces be free of frost, ice, or snow before takeoff, and specifically recommends a thorough inspection of the entire wing surface. No audio evidence was found to suggest the pilot performed or verified an ice accumulation check during the pre-takeoff phase.