As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT, THE CREW RECEIVED AN EICAS MESSAGE "HYD 2 LOW QTY" WITH 12 PERCENT HYD FLUID INDICATING IN SYS 2. THE CREW THEN RECEIVED "HYD 2 LO PRESS" AND AN AMBER EICAS MESSAGE. SYS 2 HYD QUANTITY DROPPED TO 0 PERCENT. AN EMERGENCY WAS DECLARED AND THE ACFT LANDED WITHOUT INCIDENT. MX REPLACED A CRACKED HYD TUBE LOCATED IN E2 PYLON AREA.