What happened
A pilot and three passengers were departing a remote lake on the return leg of an on-demand charter flight. During the departure, the pilot conducted a high-speed step taxi at the northwest portion of the lake, which involved a left turn of approximately 225 degrees. Following the completion of this turn, the pilot proceeded with the takeoff run on an easterly heading.
The right fuel tank had been selected for the takeoff and contained approximately 15 gallons of fuel. Roughly 45 seconds after liftoff, the engine stopped operating. The pilot subsequently performed an emergency landing in a nearby creek. During the course of the landing, the float-equipped airplane struck a gravel bar and the aircraft nosed over.
The investigation
A post-accident examination of the aircraft revealed no mechanical malfunctions. The engine was able to be started during the investigation and produced full power.