As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD SYS 3 QTY WENT TO 5% SYS 3 PRESS WENT TO 0 IN FLT AIRCRAFT WAS NOT OVERWEIGHT DURING LANDING DECLARED EMERGENCY -C/A-RAR FLEX INLET HOSE FROM UNLOADER VALVE TO TOP HYD PUMP 3A IN REF TO E175 AMM 29-12-20,NO FURTHER HYDRAULIC SYS LEAK NOTED,AIRCRAFT OK FOR SERVICE.