As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PUMP WAS SPEWING FUEL AT CASE PARTING LINE AT REGULATOR. GASKET HAD PUSHED ITS WAY OUT FROM BETWEEN HALVES. RESEALED BY REPAIR STATION. WAS TOLD THIS WAS OFTEN SEEN DUE TO THINNESS OF GASKET IF ONLY OIL OR GREASE WERE PRESENT ON MATING SURFACES WHEN ASSEMBLED. RECOMMEND NEW GASKET DESIGN.