On June 26, 2000, at 1400 eastern daylight time, a Double D Enterprises Rans S-12, homebuilt airplane, N6279D, collided with trees while executing a go-around at a private grass strip in Baneberry, Tennessee. The airplane was operated by the pilot under the provisions of Title 14 CFR Part 91, and visual flight rules. Visual meteorological conditions prevailed and no flight plan was filed for the personal flight. The commercial pilot was not injured and the airplane sustained substantial damage. The flight had originated from Morristown Airport in Morristown, Tennessee at 1300. According to the pilot, while practicing low approaches to a private strip, he encountered a down draft which exceeded the available climb capability of the aircraft. The airplane settled into trees, bending the left wing up to about 90 degrees. Weather at the time of the accident in Morristown, Tennessee 11 miles south of the grass strip was reporting; wind 230 degrees at 9 knots, gusting to 14 knots, and visibility at 10 statute miles.