What was found
(CAN) CREW REPORTED HISTORY OF GREEN HYDRAULIC SYSTEM PROBLEMS. AT TOP OF CLIMB THEY REPORTED QUANTITY AT ABOVE AMBER. ON DESCENT APPROX. 12000FT, THEY REPORTED A GREEN HYDRAULIC FAIL. CREW SOUNDED A ONE CHARLIE WITH ATC. FLIGHT REPORTED A PAN PAN WITH ATC. ON LANDING RUNWAY 23, THEY HAD A NOSEWHEEL STEERING FAIL. CFR WAS AVAILABLE FOR THE LANDING. AIRCRAFT WAS TOWED TO GATE. MTC OBSERVED A BURST HYDRAULIC LINE. RESOLUTION PRESSURE LINE ON L/H MAIN LANDING GEAR DOOR ACTUATOR 2766GM REPLACED AS PER AMM 32-31-39 PB401. GREEN SYSTEM HYDRAULICS SERVICED. GEAR SWING C/O SATIS IAW AMM 07-11-00 PB201.