As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL APPROACH, AFTER SELECTING LANDING GEAR AND FLAPS TO DOWN, THE CHECK HYD QUANTITY LIGHT CAME ON. QUANTITY READ ZERO. CREW PERFORMED A MISSED APPROACH AND LEFT THE AC IN LANDING CONFIGURATION. CREW FOLLOWED THE (COMBINED HYD SYSTEM FAILURE) CHECK LIST, AND NORMAL LANDING WAS MADE. MAINTENANCE FOUND FLIGHT CONTROL SHUTOFF VALVE FAILED AT THE LOWER CASE. (K)