As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKE-OFF ONCE THE CREW SELECTED GEAR UP THEY NOTICED THAT THE NR 2 HYDRAULIC QUANTITY WAS AT O. THE A/C RETURNED TO THE DEPARTURE AIRPORT.INVESTIGATION REVEALED THAT THE MAIN PRESSURE LINE TO THE NR 2 PRESSURE MANIFOLD HAD COMPLETLY RUPTURED. A TEMPORARY FLEX LINE WAS INSTALLED, SYSTEM TOPPED UP, SYSTEM BLED AND LEAK CHECKS CARRIED OUT.