What was found
(CAN) 15 MINUTES AFTER TAKEOFF THE CREW REPORTED THE LOSS OF THE LT HYDRAULIC SYSTEM. THE FLIGHT RETURNED AND LANDED APPROXIMATELY 14 000KG OVER MAXIMUM LANDING WEIGHT. THERE WERE NO ACFT HANDLING ISSUES AND NO EMERGENCY WAS DECLARED HOWEVER ERS DID MEET THE AIRCRAFT. FLIGHT CREW REPORTED A HOT LEFT BRAKE WITH HYD FLUID LEAKING ONTO IT AND SMOKE. MAINTENANCE RESOLUTION:FND LT ACT INSTL-INBD SPOILER NR 1 CRACKED IN 2 PARTS. ACU SPOILER INBD NR1 REPLACED IAW AMM 27-61-02B, PB401. LT HYD SYS REFILLED, SEVERAL FUNCTIONS PERFORM, NO LEAKS. LT ENG DRY MOTOR, ALL NORMAL.