What was found
DURING CRUISE, LEVEL 1 HYD PUMPS 1L, 2L, 3L OFF APPEAR ON SD AND ENG HYD PUMP CONTROL RIGTH CB POPPED OUT. LEVEL 1 SEL HYD SYS MAIN DURING FLIGHT. PRIOR TO LANDING MIA, LEVEL 2, HYD 3 FAIL DUE TO LOSS OF ALL HYD FLUID. MANUALLY EXTENDED LG, LANDED WITHOUT INCIDENT. FOUND PRESSURE HOSE LOOSE AT LH EDP DAMPER. TIGHTENED LINE & SERVICED NR 3 HYD SYSTEM. DRY MOTOR NR 3 ENGINE, NO LEAKS NOTED IAW AMM 29-11-20 & 71-00-00 & 12-13-00. RETURNED AIRCRAFT TO SERVICE.