Accident Overview
A commercial pilot was conducting a local personal flight under 14 CFR Part 91 in a float-equipped airplane. After departure from a small lake, during the initial climb, the engine lost power. The pilot executed a forced landing on tundra-covered terrain, resulting in structural damage to the right wing and fuselage.
Post-Accident Inspection
An inspection of the airframe and engine revealed no obvious reason for the loss of engine power. The gascolator was breached during the accident sequence, but approximately one-half ounce of fuel was collected from it. The sample was clear, light blue in color, appeared uncontaminated, and smelled like avgas.
Fuel Analysis
Fuel samples taken from the operator's supply tank were light colored and cloudy, with visible signs of contamination. No further chemical analysis was reported.
Engine Examination
The owner arranged for the engine and carburetor to be disassembled and inspected at a certified aircraft engine repair station. The examination found nothing that would have resulted in a loss of engine power.
Pilot Statement
The pilot reported that there were no known mechanical anomalies with the airplane prior to the accident.
Damage
The accident caused structural damage to the right wing and fuselage. No information regarding injuries or fatalities was provided in the source.