What was found
DURING A RETURN FLIGHT, LEFT AND RIGHT HYDRAULIC FLOW LIGHTS BEGAN TO FLICKER ON AND OFF. CYCLED GEAR DOWN AND MADE AN UNEVENTFUL LANDING. MAINTENANCE PERSONNEL FOUND HYDRAULIC RESERVOIR EMPTY. PERFORMED HYDRAULIC PRESSURE CHECK AND FOUND L-H PRESSURE LINE, FROM THE FLOW SWITCH TO ELBOW, CRACKED IN THE BEND OF THE RADIUS. REPLACED WITH SERVICEABLE LINE. PRESSURE CHECKED AND CYCLED GEAR WITH NO FURTHER LEAKS NOTED.