SYNOPSIS
After a flight of one hours duration, and at about 800 feet while lining up with the runway to land, the aircraft went into an uncommanded left spiral dive from which the pilot recovered. He climbed back to 1,000 feet and, on reducing power, the aircraft again went into a left spiral dive from which he recovered. At this stage he had moved somewhat southwards away from his original intended landing area and, as he reduced power again the aircraft spiralled to the left and landed heavily in a nose down attitude in a field of barley.
