U.S. Department of Energy

Cessna 550 Citation II

During descent into Billings, the Citation was sequenced behind a Boeing 757, and both airplanes were eventually cleared for visual approaches. About 1-1/2 mile from the runway the Citation was observed to roll rapidly to the inverted position and descended almost vertically into the ground. According to ATC transcripts and the airplane's cockpit voice recorder, the crew of the Citation had maintained visual awareness of the position of the B757 throughout the approach. At the time of the upset, the vertical separation between airplanes was 600 - 1,000 feet, and the horizontal separation was decreasing below 2.6 miles. One of the Citation captain's last comments was 'almost ran over a seven fifty seven.' Winds were 5 knots. All eight occupants were killed.

Rockwell Grand Commander 690

On approach to Burns Airport, the twin engine aircraft crashed in unknown circumstances. All three occupants were killed.