At about 15:15 Alaska time, a float-equipped Helio H-295 was damaged during a forced landing about 35 miles northeast of Port Alsworth. The pilot received minor injuries. The flight was en route to Anchorage when the engine began to run rough and lose power. The airplane collided with trees during a subsequent forced landing. Post-crash investigations found about 10 cc of clear water in the carburetor body drain plug. A visual inspection of the airplanes gascolator revealed the presence of about two cups of murky and silty water. The accident pilot stated that he had checked the accident airplanes fuel system for contaminants by draining a fuel sample from the gascolator.