As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, CREW REPORTED HYD OVERPRESSURE CONDITION WITH AN INDICATION OF OVER 1850 PSI. EMERGENCY PROCEDURES WERE FOLLOWED AND THE ACFT LANDED SAFELY. MX RESET THE PRESSURE RELIEF VALVE AND CHECKED THE SYS WITH DIRECT READING GAUGES BUT COULD NOT DUPLICATE THE DISCREPANCY.