As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LOSS OF HYDRAULIC FLUID FROM NR 2 HYD SYSTEM AND SUBSEQUENT ILLUMINATION OF ISO VALVE CAUTION LIGHT. CREW DECLARED AN EMERGENCY AND RETURNED TO MIA. FOUND 2 HYDRAULIC LINES AT NR 1 MLG FWD DOOR ACTUATOR WITH PIN HOLES. INSTALLED TEMPORARY FLEX LINES IAW SPECIAL PROCEDURE 20.1.