What was found
(CAN) WHEN LEFT INNER FUEL PUMP WAS TURNED ON FOR APU TIME, NR 2 ENGINE BEGAN LEAKING FUEL. THE NR 2 PUMP WAS THEN TURNED OFF UNTIL REQUIRED FOR ENGINE START. NR 2 ENGINE FCU RIGGING CHECKED, NR 2 BOOST PUMP RUN FOR 15 MINS. NO FUEL LEAKAGE NOTED. FUNCTION CHECKED SERVICEABLE AND AIRCRAFT RETURNED TO SERVICE. REF P101716.PMI FOLLOW-UP REQUESTED. 2000-08-04 OPERATOR SPECIFIED THIS WAS A ONE TIME OCCURRENCE. THE LEAK ORIGINATED FROM THE CASE DRAIN HOLE IN THE FCU. UPON EXERCISING THE FCU THE LEAK WENT AWAY AND STAYED AWAY.