As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD SYSTEM 3 FAILED DURING CRUISE FLIGHT. ZERO PSI. COMPLIED WITH QRH. DECLARED EMERGENCY. PERFORMED A FREEFALL EXTENSION OF LANDING GEAR. R & R THE HYD PUMP 3A AND 3B IAW AMM. R & R THE O-RING BETWEEN THE PUMP AND THE BALL ATTENUATOR. LEAK CHECKED GOOD.