What happened
Following de-icing procedures, the crew coordinated with Air Traffic Control to expedite their departure due to deteriorating weather conditions. As the aircraft began its takeoff roll, the pilot initially reported normal operations. However, upon passing the 7,000-foot remaining marker, the aircraft began tracking to the left. The captain attempted to maintain directional control using rudder inputs and differential power, but the deviation continued.
The first officer noted that an Ice Condition light illuminated shortly after power levels were advanced. As the aircraft continued its leftward drift, it began straddling the runway lights. The captain subsequently aborted the takeoff. During the braking application, the aircraft slid off the runway and spun to the left, eventually coming to a stop facing east. At the time of the incident, the runway was covered in 1 to 1.5 inches of snow and slush.
The investigation
An examination of the tire tracks left in the snow indicated that the aircraft began its takeoff roll to the left of the runway centerline. These tracks moved progressively further from the centerline until the aircraft exited the left side of the runway. A mechanical examination of the aircraft revealed no anomalies.
Findings
An examination of the scene and weather conditions showed visibility was 1/2 mile in snow and fog, with ceilings between 400 and 1,100 feet. There were no fatalities or injuries reported.