Accident Description
During the takeoff roll, the airplane climbed to approximately 200 feet above the ground when the engine experienced a partial loss of power. The pilot was unable to maintain altitude and executed a forced landing to a grass area northwest of the runway. During the landing, the airplane struck trees and a fence.
Investigation Findings
Post-accident examination of the airframe and engine did not reveal any pre-impact failures. Fuel consistent with aviation gasoline was found throughout the fuel system, and no evidence of contamination was noted. The engine was subsequently started and ran without issue, but due to damaged engine mounts, the engine speed was not increased above 1,300 rpm.
Weather Conditions
The temperature and dew point reported at a nearby airport were 86°F and 70°F, respectively. A review of a carburetor icing probability chart placed the reported temperature and dew point in the "serious icing at glide power" area. However, the pilot reported that application of carburetor heat after the partial loss of engine power did not affect engine performance.