Firefighters say the plane had engine problems and its wing clipped a road sign, before it went down in a cornfield.
Two adults and one child were on board at the time.
"The plane was on approach to Morris Airport, landing from the south to the north on the runway," said Tracey Steffes, Morris Fire and Ambulance Protection District. "The engine failed, whether it was mechanical or human failure we don't know."
Investigators say the plane was badly damaged, but it held up during the landing well.
officers plan to move the plane Sunday morning.