As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE CREW REPORTED THAT THE NR 2 HYDRAULIC SYSTEM DEPLETED AFTER TAKEOFF. THE FLIGHT RETURNED AND AN ALTERNATE GEAR EXTENSION WAS PERFORMED. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE DISCOVERED A PIN HOLE IN THE SYSTEM NR 2 MLG UP PRESSURE TUBE ASSEMBLY. A FLEX LINE HAS BEEN INSTALLED.