Flight Initiation and Weather Conditions
The pilot, who was not rated to fly under instrument flight rules, initiated a visual flight rules (VFR) flight from Wheeling, Illinois, to Madison, Indiana. The flight was conducted in marginal weather conditions.
Discovery of Wreckage
The wreckage of the aircraft was located on the afternoon of the day following the flight. It was found approximately 26 miles south of Gary, Indiana.
In-Flight Breakup
Examination of the wreckage revealed that the aircraft had experienced an in-flight breakup. During the breakup, both wings, the right stabilator, and the vertical fin and rudder separated from the airframe.
Cause of Breakup
Investigation determined that the in-flight breakup occurred because aerodynamic forces acting on the aircraft exceeded its design limitations.