As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BWI - FLT 174 - EN ROUTE RDU-LGW, DETECTED RIGHT SIDE HYDRAULIC SYSTEM FAILURE. DIVERTED BWI AND LANDED WITHOUT FURTHER INCIDENT. REPLACED RIGHT SIDE ENGINE HYDRAULIC PUMP PRESSURE INE. SERVICED RIGHT HYDRAULIC SYSTEM. RAN BOTH ENGINES. NO LEAKS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)