As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - FLIGHT 2399 - ON APPROACH THE NR 2 HYDRAULIC ISO VALVE CAUTION LIGHT ILLUMINATED. THE NR 2 HYDRAULIC QUANTITY FELL TO 10-15 PERCENT. AT NO TIME DID THE HYDRAULIC QUANTITY REACH ZERO. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE LANDING GEAR RETRACT ACTUATOR LINE FOR THE LEFT MAIN LANDING GEAR WAS BROKE. THE LINE WAS REPLACED, LEAK AND OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.