Incident Overview
A student pilot, who had just completed a training flight with an instructor, departed on a solo flight. The training flight included several takeoffs and landings, both touch-and-go and full stop. After the training flight, the airplane was refueled and a pre-flight inspection was performed. The instructor provided a complete briefing before the student pilot departed alone.
Takeoff Sequence
During the takeoff roll for the solo flight, the airplane unexpectedly yawed to the left. It subsequently overran a patch of ice on the runway, causing the yaw to become more pronounced. The airplane then departed the runway surface and struck a snowbank.
Post-Incident Reports
Both the student pilot and the instructor stated that there were no mechanical deficiencies with the airplane prior to or during the incident. No other factors were identified in the initial reports.