Incident Overview
A student pilot was landing an airplane when the main landing gear touched down on the runway at normal airspeed. After the nose wheel contacted the runway, the pilot applied the brakes, at which point the nose wheel began to shake. In an attempt to relieve pressure on the nose wheel, the pilot pulled back on the yoke. This action caused the airplane to veer to the left. The pilot was unable to maintain directional control, and the airplane departed the side of the runway.
Sequence of Events
Upon exiting the runway surface, the nose wheel dug into soft ground. The airplane then nosed over and came to rest in an inverted position. The report does not specify any injuries to the pilot or damage to the aircraft beyond the inverted resting state.
Contributing Factors
The incident sequence was initiated by the nose wheel shake during braking. The pilot's subsequent yoke input, intended to reduce nose wheel load, resulted in a loss of control. The soft ground conditions at the runway edge contributed to the airplane's final inverted posture.
Conclusion
The student pilot's inability to maintain control after the nose wheel shake and veer led to a runway excursion and the airplane coming to rest inverted. No probable cause is stated in the source.