What was found
AFTER DEPARTING HOME BASE, SMELLED FUEL. STATED IT WAS STRONG. MADE A PRECAUTIONARY LANDING. MECHANIC INSPECTED AND FOUND NOTHING. ACFT RETURNED TO SERVICE. MECHANIC OPENED ACFT INTERIOR AND CHECKED THE EXPANSION TANKS FOR LEAKS, INSPECTED THE FUEL CAP, VENT LINES, AND BELLY OF THE ACFT WITH NO DISCREPANCIES NOTED. HAD THE PILOT FLY A TEST FLIGHT WITH THE AIR CONDITIONING AND FLIGHT ATTITUDE AS IT WAS WHEN THE ODOR WAS DETECTED. NO DEFECTS NOTED. ACFT RETURNED TO SERVICE.