As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 390 - DCA - CMH - EN ROUTE TO CMH, THE AIRCRAFT EXPERIENCED FLUID LOSS FROM THE NR 1 HYDRAULIC SYSTEM. CREW DECIDED TO DIVERT TO PIT FOR MAINTENANCE. NO EMERGENCY DECLARED. FLIGHT LANDED IN PIT WITHOUT INCIDENT. MAINTENANCE REPLACED AN O-RING SEAL ON NR 1 ENGINE HYDRAULIC PUMP AND SERVICED THE SYSTEM. (M)