What was found
(CAN) A FUEL LEAK WAS NOTICED FROM THE OIL DRAIN. THE OPERATOR DETERMINED THE LEAK WAS FROM THE FMM. DURING THE FOLLOWING GROUND RUN THE LEAKAGE RATE WAS ESTABLISHED IN 10 DROPS/MINUTE, INCREASING AFTER THE SHUTDOWN. WHEN THE FMM WAS REMOVED, FUEL WAS ALSO FOUND IN THE GEARBOX MATING AREA. THE FMM WAS REPLACED AND THE ACFT RETURNED TO SERVICE.