As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF FROM MIA, EXPERIENCED HYDRAULIC QUANTITY LOSS AND PRESSURE. RETURNED TO MIA AND LANDED WITHOUT INCIDENT. INSPECTION REVEALED HYDRAULIC PRESSURE LINE CHAFED AT NR 3 ENGINE HYDRAULIC PUMP. REPLACED LINE AND CHECKED FILTERS. SERVICED SYSTEM AND RETURNED AIRCRAFT TO SERVICE.