Primary finding
Probable cause
The failure of the nose landing gear retention bolt during taxi which resulted in a loss of control and subsequent impact with the taxiway.
Investigator assessment
Analysis narrative
The pilot reported that after landing, he applied the brakes and felt a “violent shimmy.” He released the brakes and the nose landing gear leg rotated left and aft which resulted in the right wing impacting the runway surface. A post-accident examination revealed that the nose landing gear retention bolt had sheared and the airplane had sustained substantial damage to the right wing. The pilot stated that he was the second owner and noticed that the original builder had not followed the design plans for the airplane, so the pilot modified the nose wheel attach plate to strengthen it but did not modify the gear assembly attach point which resulted in the failure.