As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 5117 - BLUE HYDRAULIC LOW PRESSURE WARNING ON ECAM. EN ROUTE DTW/HUX. AIRCRAFT DIVERTED TO ORD. BLUE SYSTEM ELECTRIC PUMP FOUND UNSERVICEABLE. REMOVED AND REPLACED BLUE ELECRIC PUMP IAW AMM 29-12-51. LEAK CHECK SATISFACTORY. OPS CHECK SATISFACTORY