As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TAKEOFF CREW REPORTED LOSS OF HYDRAULIC SYSTEM "A" AND THE LANDING GEAR WOULD NOT RETRACT. OVERWEIGHT LANDING PERFORMED. ON THE GROUND MAINTENANCE DISCOVERED HYD LEAK FROM RT THRUST REVERSER FLEX LINE. THE HOSE ASSY WAS MFG JAN 1975. HYDRAULIC LINE REPLACED AND ACFT RETURNED TO SERVICE.