What was found
FLT 446 TPA-BOS, CREW DECLARED EMERGENCY DUE TO GREEN SYSTEM HYD FLUID LOSS ON FINAL APPROACH. GO-AROUND DONE, RAN ECAM, LANDG GEAR DOORS DID NOT RETRACT, DID NOT EXCEED 200 KTS. DID A MANUAL GEAR EXTENSION AND FLAP 3 LANDING PER QRH/ECAM. YELLOW HYDRAULIC SYSTEM INDICATED OVERHEAT 5 MINUTES PRIOR TO LANDING SMOOTH LANDING COMPLETED WITHOUT ANY FURTHER EVENTS. AIRCRAFT CHECKED BY CFR AND THEN TOWED TO GATE. REMOVED AND REPLACED RT MLG DOOR ACTUATOR HOSE (2765GM) PER MM 32-31-35 LEAK+OPS CHECKS GOOD OPS CHECK OF YELLOW HYD SYS FOR OVERHEAT INDICATION PER MM 29-13-00 + 29-24-00 NO FAULTS NOTED OK FOR SERVICE.