What was found
EN ROUTE, DURING APPROACH, AT 12000 FT, RECEIVED (ENG 1 OIL FILTER CLOG) ECAM MESSAGE, THEN, THE NR 1 ENGINE BEGAN TO FLUCTUATE, VIBRATE AND SURGE UNTIL IT QUIT. CREW ACCOMPLISHED, THE SHUTDOWN PROCEDURES GIVEN BY ECAM ACTIONS. FLIGHT LANDED WITHOUT FURTHER INCIDENT. SINGLE ENGINE TIME WAS 18 MINUTES. MAINTENANCE REPLACED THE NR 1 ENGINE. OPERATIONALLY AND LEAK CHECKED OK. ENGINE VENDOR REPLACED NR 4 BEARING.