Landing Attempt
The pilot and 6 passengers were landing at a remote airport at the completion of a Title 14 CFR Part 135 commuter flight. A village agent reported the surface wind condition as 15 kts from the south. The pilot observed blowing snow across the runway surface and estimated the wind was between 30 and 35 kts. He also indicated that downdraft conditions existed at the airport.
About 1/2 mile from the threshold of the runway, the pilot selected 20 degrees of flap, lowered the right wing, and began to maintain runway alignment by application of nearly all of the available rudder travel.
Go-Around Decision
About 25 feet above the ground, the pilot applied full power to counteract an increasing sink rate. The rudder was already deflected to full travel, and the pilot decided to go-around. He raised the nose of the airplane and retracted the flaps, first to a flap up position, and then to a 10 degree setting.
Runway Excursion
The airplane continued to descend and touched down to the left of the runway centerline, about 800 feet beyond the landing threshold. The surface of the runway was rutted from previously melted snow and ice. The airplane departed off the left edge of the runway, and the nose wheel dug into soft snow. The airplane then nosed over.