As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHITE HYD SHUTOFF VALVE ON THE OVERHEAD PANEL STARTED BLINKING OFF AND ON. NR 1 HYD QTY WENT TO ZERO. FOLLOWED ABNORMAL CHECKLIST ACCOMPLISED ZERO FLAP LANDING. LANDING UNEVENTFUL. R & R NR 1 HYD BALANCED RELIEF VALVE IAW AMM 29-11-51-000-801, 29-11-57-400-801. OPS TESTED GOOD, NO LEAKS NOTED. NO OTHER DEFECTS NOTED AT THIS TIME. RETURNED TO SERVICE.