Incident Overview
A float plane was observed during takeoff and initial climb before it disappeared from view behind a point of land. Shortly thereafter, the aircraft impacted the surface of a lake in a left wing low attitude with considerable slip to the left.
Engine and Propeller Examination
Reports describing the noises coming from the engine immediately before impact are conflicting. Examination of the propeller indicated that little or no power was being developed at impact. However, subsequent examination of the engine indicated it was capable of producing power at impact (reference lp 233/83).
Aircraft Modifications and Equipment
The aircraft was fitted with an external fuel tank underneath the fuselage, but the log books and the weight and balance documentation did not reflect this addition. An unapproved bench was installed in the centre cabin area, and the aircraft had no visible means of load restraint.
Outcome
The aircraft was reported as destroyed, although some parts may still exist.