What happened
The aircraft departed from the runway but failed to maintain a straight path during the initial acceleration phase. As the plane gathered speed for lift-off, the pilot lost directional control, causing the aircraft to swerve violently across the pavement. This loss of control resulted in the airplane tipping onto its side and eventually rolling completely upside down on the ground.
The student pilot reported that visibility conditions deteriorated suddenly during the roll. Specifically, sunlight broke through a layer of clouds directly into his line of sight. This intense glare caused temporary blindness, preventing him from seeing the runway centerline or edge lights. Simultaneously, crosswind conditions were present. The combination of visual obstruction and lateral wind forces interfered with his ability to keep the aircraft aligned with the runway, leading to the groundloop.
The investigation
Investigators reviewed the pilot's account of the event. The primary factor identified was the sudden onset of glare from the sun breaking through cloud cover. This environmental condition directly impacted the pilot's situational awareness and control inputs during a critical phase of flight.
Findings
The accident was caused by the student pilot's inability to maintain directional control due to temporary blindness from sunlight glare combined with crosswind conditions. The pilot failed to account for the rapid change in visibility or adjust his technique to compensate for the reduced visual references and lateral wind drift.