As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD RESERVOIR LOW LEVLE, DURING CRUISE FLIGHT. DECLARED AN EMERGENCY. MX FOUND A HOLE IN THE RETURN LINE FOR THE NR 2 ENG THRUST REVERSER HYDRAULIC LINE. THE LINE WAS REPLACED IAW AMM 78-31-49 & HYD SYS SERVICED IAW AMM 29-13-00-710003-A.