What was found
ON GROUND, FUEL SPILL THRU RT WING, AFTER REFUELING AIRCRAFT. FOLLOW PROCEDURES IN FUELING MANUAL FOR FUEL SPILLAGE. DURING INSPECTION, FOUND BOTH THE NR 2 AND NR 3 DRAIN VALVE LEAKING. REPLACED BOTH VALVES, CLEAN FUEL TANKS, INSPECTED, AND CLOSED TANK PLATES, REFUELED, AND PERFORMED LEAK CHECK, NO LEAKS NOTED. PERFORMED FUNCTIONAL TEST IAW MM28-11-02, FUNCTIONAL TEST SATISFACTORY. AIRCRAFT RETURNED TO SERVICE WITHOUT FURTHER INCIDENT.