NTSB Probable Cause

THE PILOT IN COMMAND'S OPERATION AT TOO LOW AN ALTITUDE OVER THE RIVER AND HIS FAILURE TO MAINTAIN ADEQUATE CLEARANCE FROM THE POWER LINES. FACTORS CONTRIBUTING TO THE ACCIDENT WERE THE WIRES CROSSING THE RIVER AND THE PILOT IN COMMAND'S POOR JUDGEMENT IN CHOOSING TO OPERATE AT LOW ALTITUDES ALONG HIS ROUTE OF FLIGHT.