As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, THE NR 1 HYDRAULIC SYSTEM LOST HYDRAULIC FLUID. DECLARED EMERGENCY AND ALTERNATELY EXTENDED LANDING GEAR AND FLAPS. AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED THE NR 1 ENGINE DRIVEN HYDRAULIC PUMP AND OPERATIONAL CHECK GOOD.