NTSB Probable Cause

CONTINUED FLIGHT BY THE PILOT INTO KNOWN ADVERSE WEATHER AND HIS FAILURE TO MAINTAIN SUFFICIENT ALTITUDE/CLEARANCE ABOVE OBSTACLES. CONTRIBUTING FACTORS WERE: LOW CEILING, FOG, RAIN, PILOT DELAYING FLIGHT TO AN ALTERNATE DESTINATION, HIS LACK OF RECENT FLIGHT EXPERIENCE, HIS LACK OF FAMILIARITY WITH THE TYPE OF AIRCRAFT, AND TREES.