Approach and Witness Observation
The aircraft had been cleared for an Instrument Landing System (ILS) approach to Runway 13. A witness located just north of the runway observed the aircraft pass overhead and noted that it was not on a correct approach. The aircraft then began heading west, as if to circle for a second approach. The witness estimated the aircraft's altitude to be about 200 feet above ground level (AGL).
Accident Details
The aircraft subsequently crashed into the ice-covered surface of Lake Utah. The impact point was 2,725 feet to the right (west) of the extended centerline of Runway 13 and 2,850 feet from the approach end of the runway. The accident site was located inside the middle marker, which is the missed approach point. Evidence indicated that the aircraft impacted in a left-wing-low, nose-down attitude.
Weather and Equipment
The weather minimums for the approach were a ceiling of 300 feet and visibility of 4 statute miles. The altimeter was found set to 30.24 inches of mercury. The pilot had been given an altimeter setting of 30.34 prior to the approach.
Pilot Records
The last entry in the pilot's logbook was dated March 3, 1983. There were no logbook entries for flight time in the Cessna 320 aircraft.