20190311001189A

The pilot had just completed a agricultural dispensing operation and was landing at his home base in Parma, ID. Winds at the time were 4 knots and variable. During approach the pilot noticed a freight train travelling on the tracks parallel to the runway. In his experience, a train that is travelling on the tracks during the time of landing causes difficult landing conditions and unpredictable winds at ground level. The pilot initiated a go around and began his approach after the train had passed by the airport. This approach and touchdown was uneventful. During rollout the pilot retracted the flaps and the tailwheel was on the ground and locked. During rollout the pilot stated that 'it was like somebody kicked the aircraft in the side' the tail came up and the aircraft started to travel to the left side of the runway. Tire marks on the runway surface show the left tire started to skid. The pilot stated that he deliberately added the brake to tighten the left turn and keep the aircraft from going through a large puddle of water that he thought would cause the aircraft to flip on its back. The aircraft continued to travel to the left and departed the runway surface. The aircraft continued the left turn while on the turf to the left side of the runway eventually stopping facing the runway. During the approximately 270 degree rotation from landing direction the aircraft sideloaded the right main landing gear and struck the right wing tip on the ground, causing damage to the aileron and rear spar of the right wing. When the aircraft came to a stop facing the runway the powerplant was still operating and the propeller had not touched the ground. The pilot added power, taxied onto the runway surface, continued to parking and performed a normal shutdown.

The pilot contacted the boise FSDO on 03-18-2019 and stated that the runway has some frost heaves across the runway. He stated that those frost heaves may have contributed to the loss directional control.