On June 2, 2006, at 1115 central daylight time, an Allied Ag Cat Productions, Inc. G-164A, N600T, operated by Carlson Air Service, impacted terrain during a takeoff on runway 11 at Mathis Airport, Gonvick, Minnesota. The airplane overran the runway and nosed over. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 137 aerial application flight was not operating on a flight plan. The pilot received minor injuries. The local flight was originating at the time of the accident. According to the Federal Aviation Administration inspector, the pilot stated that he never reduced the throttle in an attempt to abort the takeoff from runway 11 (2,000 feet by 75, grass), which was dry and mowed at the time of the accident. The airplane then overran the runway into a field at the departure end of the runway. The pilot stated that he thought the engine was not developing full power because it used up the entire runway length in the takeoff attempt. The airplane was powered by a Pratt & Whitney, R-1340-AN1, serial number 31239 engine. No subsequent engine anomalies were reported.