What happened
During a training flight involving multiple touch-and-go landings, the student pilot was operating the controls for the third attempt. As the aircraft prepared for takeoff on the downwind leg, it drifted laterally across the runway surface and exited onto the adjacent grass area. The instructor pilot attempted to regain directional control but was unsuccessful. The aircraft then struck a manhole cover, which resulted in the collapse of the nose landing gear and caused the aircraft to nosed over.
The investigation
The physical examination of the aircraft revealed damage consistent with the described sequence of events. The primary structural impact occurred when the nose gear assembly contacted the manhole cover after leaving the paved runway surface. This contact led to the failure of the nose gear, resulting in the forward fuselage contacting the ground.
Findings
The loss of directional control during the takeoff roll was a critical factor in this incident. The aircraft's deviation from the runway centerline onto the grass indicates a failure to maintain proper heading or track during the initial acceleration phase. The subsequent impact with the manhole cover exacerbated the damage, leading to the collapse of the nose gear and the final resting position of the aircraft.
Safety message
Maintaining precise directional control during takeoff rolls is essential for all pilots, particularly students. Proper rudder input and crosswind correction techniques must be practiced to ensure the aircraft remains centered on the runway until rotation or until a go-around decision is made.