As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYDRAULIC LOW PRESSURE CAS MESSAGE COMPLIED WITH QRH AIR RETURN TO DEN OPERATE NR 1 EDP APPROXIMATELY 45 SECONDS BEFORE DISCONNECT. FOUND NR 1 HYD HIGH PRESSURE INBOUND FLEX LINE RUPTURED AND NR 1 HYD CASE DRAIN LINE CHAFED, CHAFE CAUSED BY LOWER FAIRLEAD WEAR. REPLACED CASE DRAIN LINE AND HIGH PRESSURE FLEX LINE PER AMM. (M)