As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN REFUELING ACFT, PILOT NOTICED FUEL DRIPPING FROM DRAIN TUBE AND ON SIDE OF ACFT. MECHANIC VERIFIED IT WAS FUEL LEAKING FROM THE HMU AND IT WAS NOT LEAKING FROM ONE OF THE PIPES ON THE HMU WHEN PRIME PUMPS TURNED ON. REMOVED HMU FIRE SHIELDS & LEAK WAS VISIBLE FROM THE CASE HALF OF THE UPPER AND LOWER PORTION OF HMU.