At 1610 Central time, the airplane was destroyed upon impacting terrain following a loss of control in the airport traffic pattern. The Commercial pilot, sole occupant of the airplane, was fatally injured. Visual conditions prevailed. The flight originated near Pascagoula, Miss. A witness who was located on the airport reported that he observed the airplane fly steadily over a tree line, with no erratic movements. As the airplane descended to an altitude of approximately 200 feet, the airplane went into an approximate 20 degree nose-down attitude and impacted the terrain.