At about 1745 Central time, the airplane was destroyed during impact with terrain. Instrument conditions prevailed at altitude, with marginal visual conditions reported at the surface. The non-instrument-rated private pilot and his passenger were fatally injured. Recorded radar track data include the likely accident aircraft cruising at 1900 and 2000 feet msl. Witnesses located near the accident site reported hearing, but not seeing, an airplane overfly their position. It was raining, and the ground visibility was limited due to fog.