What was found
(CAN) WHILE FLIGHT CREW WAS PREPARING FOR NEXT FLIGHT, THE FLIGHT ATTENDANT NOTICED FUEL DRIPPING FROM THE BOTTOM OF NR 2 ENGINE COWL. UPON FURTHER INSPECTION, FUEL WAS LEAKING OUT OF VENT HOLE OF THE NR 2 LOW FUEL PRESSURE SWITCH. SWITCH WAS REPLACED WITH NEW. THIS IS THE SECOND SWITCH FOR THIS AIRCRAFT, FIRST ONE WAS ON THE NR 1 ENGINE 270 HOURS AGO. AS A CAUTIONARY MEASURE, THE NR 3 ENGINE LOW FUEL PRESSURE WILL BE REPLACED WHEN AIRCRAFT RETURNS TO HOME BASE. THE MANUFACTURER HAS BEEN INFORMED.