NTSB Probable Cause

THE PILOT IN COMMANDS FAILURE TO MAINTAIN AIRSPEED ABOVE SINGLE ENGINE MINIMUM CONTROL SPEED RESULTING IN AN INFLIGHT LOSS OF CONTROL AND COLLISION WITH TERRAIN. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT IN COMMAND'S FAILURE TO DECLARE AN EMERGENCY AND REQUEST PRIORITY LANDING AND HIS DECISION TO FOLLOW A SLOWER AIRCRAFT IN THE PATTERN.