A Huntingburg man was life flighted to an Evansville hospital Monday afternoon after his semi tractor-trailer overturned on State Road 56 in Dubois County. The Dubois County Sheriff's Office says 50-year-old Ronald Hasenour was westbound pulling a grain trailer when he apparently took a curve too fast and the tractor-trailer overturned. Hasenour's arm was severely injured when it became trapped and pinned by the cab of the semi. The accident remains under investigation. The semi tractor-trailer was a total loss.