Flight Details
The aircraft was on its first flight after approximately two years of inactivity. A ferry permit had been issued for the flight. According to the pilot, a pre-takeoff engine runup was performed, and the takeoff was normal until the aircraft climbed to about 600 feet above ground level.
Engine Power Loss
The pilot reported hearing a pop and mechanical noise. Subsequently, the engine lost power, decreasing to about 50% power. The pilot stated he was able to maintain altitude, so he remained in the traffic pattern to return for landing. The pilot said the engine lost power completely after he turned onto the base leg.
Forced Landing
As the pilot attempted to land in an open field, the landing gear struck a power line.
Examination
Examination of the aircraft did not disclose evidence of mechanical malfunction.