As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT NR 3 HYDRAULIC QUANTITY DECREASED AT 1 GAL PER HOUR RATE. DEPRESSURIZED SYSTEM, FLUID LOSS STOPPED. SYSTEM DEPRESSURIZED UNTIL DESCENT. TROUBLESHOOTING CONFIRMED LEAK IN RIGHT HAND FLIGHT CONTROL SHUTOFF VALVE. VALVE REPLACED IAW BMM 27-13-01 PG 401, SYSTEM TESTED SATISFACTORY IAW BMM 27-13-01 PG 501.