At a height of about
250 feet, and at a position approximately one mile from the landing field, the aircraft suddenly rolled to the left
and dived into the lake, virtually disintegrating on impact. No parts of the port outer flap plywood skin panel
could be identified among the severely damaged wreckage. This panel was located, virtually intact, some four
weeks after the accident on the shore of the lake l£ miles north east of the accident site. Detailed examination of
the total flap structure revealed evidence consistent with the panel having separated from the structure as a result
of air loads in flight. It is normal practice in this type of aircraft for flap to be extended on final approach for
landing but it was not possible to establish from the evidence available whether or not any flap was in the extended position at the time of impact.