As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI IN LOST ALL HYDRAULIC PRESSURE ON BOTH SIDES WITH ENGINES RUNNING AND ELECTRICAL PUMPS ON. QUANTITY WAS NORMAL. FOUND LT FWD CASE DRAIN FILTER LEAKING FROM OUTBOARD FITTING. TIGHTENED FITTING AND CLEANED AREA. PRESSURE AND INDICATIONS ALL NORMAL ON ENG RUN.