What was found
(CAN) ON ARRIVAL, THE IB FLAPS FAILED TO EXTEND WHEN LANDING, CONFIGURATION SELECTED. THE CREW ELECTED TO DIVERT. THE AIRCRAFT COMPLETED A NORMAL LANDING. MAINTENANCE WAS UNABLE TO DUPLICATE THE PROBLEM AND INSPECTED THE SYSTEM FOR LEAKS AND ANOMALIES. THE FLAP POSITION INDICATOR WAS REPLACED AS PRECAUTION AND THE AIRCRAFT WAS RETURNED TO SERVICE. THE AIRCRAFT SUBSEQUENTLY REPOSITIONED WITHOUT FURTHER PROBLEM. HOWEVER DURING DEPARTURE THE CREW OBSERVED LOW HYDRAULIC QUANTITY ON THE A SYSTEM AFTER SELECTING GEAR AND FLAPS UP. THE AIRCRAFT DIVERTED AND LANDED WITHOUT FURTHER PROBLEM. MAINTENANCE REPLACED A FAILED IB FLAP BYPASS VALVE. BOTH A SYSTEM PUMPS AND THE RESPECTIVE CASE DRAIN FILTERS WERE REPLACED NO CON