As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) APPROXIMATELY 5 MINUTES BEFORE TOP OF DESCENT, THE CREW RECEIVED A HYDRAULIC SYS 2 LOW QTY INDICATION FOLLOWED BY A HYD 2 FAILURE. AN EMERGENCY WAS DECLARED WITH ATC AND THE QRH WAS FOLLOWED. THE RT NR 2 ENGINE DRIVEN PUMP, EDP WAS FOUND LEAKING.