As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 2.5 HRS INTO FLIGHT, RECIEVED HYD QTY LOW R CAUTION MESSAGE. OBSERVED CONTINUOUS DROP IN RIGHT HYD QTY THROUGHOUT REMAINDER OF FLIGHT, DIVERTED. R & R RT HYD INTERFACE MODULE. OPS CHECKED GOOD IAW MM 29-11-50-4. R & R RT HYD RESERVOIR QUANTITY TRANSMITTER. OPS CHECKED GOOD IAW MM 29-33-02-4. ACFT OK FOR SERVICE.