As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, CREW EXPERIENCED SEVERAL WARNING AND CAUTION LIGHTS RELATED TO THE HYDRAULIC SYSTEM. NR 2 SYS WAS INDICATING A ZERO QUANTITY. ABORTED APPROACH AND DECLARED AN EMERGENCY AND PERFORMED EMERGENCY PROCEDURES. ACFT LANDED WITHOUT INCIDENT. GROUND MX CREW TRACED THE ISSUE TO A BAD HYD CHECK VALVE PN 3-1582-2-3.