What was found
PILOT WAS DOING IOE, ON THE WAY BACK FROM CYF TO BET CREW NOTICE ONLY FUEL WAS ONLY COMING OUT OF R/H FUEL TANK.R/H FUEL TANK WENT FROM 1/2 TO 1/4 IN 10 MINUTES AT CRUISE. CREW DECIDED TO DO AN UNSCHEDULED LANDING AS THEY WERE 12 MINUTES OUT OF BET. THEY LANDED IN WNA AND HAD A 1 PASSENGER ON BOARD. AIRCRAFT WAS REFUELED AND WENT TO MX BASE IN BET.THE FLOAT VALVES WERE ADJUSTED SO BOTH FUEL TANKS COULD FEED ENGINE EVENLY. OPERATIONAL FLIGHT WAS SATISFACTORY AFTER MAINTENANCE WAS PERFORMED.