What happened
The pilot was engaged in a training session focused on practicing takeoffs and and landings. After completing the first landing of the sequence, the pilot taxied the aircraft and noticed a noticeably bad shimmy in the nose gear. Despite this warning sign, the pilot elected to continue with the planned flight operations.
During the subsequent takeoff and landing attempts, the issue persisted. On the final landing, the pilot was unable to maintain directional control of the aircraft. The loss of control resulted in the aircraft veering off the runway and colliding with a snowbank.
The investigation
Following the accident, a detailed inspection of the aircraft was conducted to determine the mechanical cause of the directional instability. The examination revealed that the nose gear shimmy damper was defective. This component is critical for stabilizing the nose wheel during ground operations, and its failure directly contributed to the pilot's inability to steer the aircraft effectively.
Findings
The primary factor in this accident was the mechanical failure of the nose gear shimmy damper. The pilot's decision to continue flying despite detecting a noticably bad shimmy during taxiing allowed the situation to escalate. The defective component led to a loss of directional control on the final landing, causing the collision with the snowbank.