Narrative:The no. 1 engine failed, 7 minutes after departure from McChord AFB. Attempts to feather the propeller failed. During the diversion to Thunfield the prop intermittently oversped.
The plane came in high, so a go-around was initiated. At a height of 200 feet the prop oversped and the aircraft apparently stalled. It struck the ground left-wingtip-first and nose-low.
It appeared that a the throttle control rod that connects the throttle arm to the jack shaft at the carburetor control arm had separated.
Probable Cause:PROBABLE CAUSE: "The improper handling of an emergency situation, precipitated by a mechanical malfunction, which resulted in an unsuccessful single-engine go-around. A contributing factor was the failure of Radar Approach Control to provide complete and accurate airfield data to the pilot."
» CAB Accident Report File No.1-0004
» ICAO Accident Digest No.15 - Volume I, Circular 78-AN/66 (21-26)
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not
display the exact flight path.
Distance from Tacoma-McChord AFB, WA to Great Falls-Malmstrom AFB, MT as the crow flies is 845 km (528 miles).
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.