The airplane was substantially damaged during a forced landing on a vacant football field at about 2039 Eastern time on a Part 135 on-demand cargo flight. The commercial pilot was not injured. Night visual conditions prevailed. Shortly after takeoff, at about 800 to 1000 feet, the pilot heard a loud bang and engine rpm increased, followed by an oil pressure decrease. He advised ATC the flight needed to return. At 600 feet agl the engine lost power. While on approach, the airplane collided with a chain link fence and sustained damage to its left wing and fuselage.
