Officials in North Dakota say Republican congressional candidate Duane Sand walked away unhurt after the small plane he was flying had engine failure and crashed in a cornfield.

Campaign manager Matt Dabrowski says the accident occurred Wednesday as the candidate was flying alone from Bismarck to Fargo.

Highway Patrol Capt. James Prochniak says the plane came down in soft soil, bounced, flipped forward and landed upside down. The officer says Sand had no visible injuries and declined medical treatment

Sand is making his third bid for Congress. He’s running against Democratic Rep. Earl Pomeroy who is seeking his ninth term.