As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH INFLIGHT DFW-SJO. CREW REPORTED RT HAND HYD QUANTITY LOSS & LT HAND HYD QUANTITY INDICATOR WENT BLANK. EMERGENCY DECLARED FLIGHT DIVERTED IAH LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RT HAND ANTI SKID VLV. SYSTEM GND CHECKED NORMAL OPERATION CLOSED.