As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ARRIVAL FOUND EVIDENCE OF HYDRAULIC LEAKING LEFT SIDE FUSELAGE BY APU. FURTHER INVESTIGATION SHOWED FLUID COMING FROM LOWER RUDDER AFT TRAILING EDGE DRAIN HOLE. FOUND UPPER RUDDER PCU PISTON SEAL LEAK POINT SEAPING UNDER 5 DROPS PER MINUTE AND CYCLE.