What was found
AIRCRAFT WAS GROUNDED, ON FINAL, NR 1 ENGINE STALLED. AFTER CLEARING RUNWAY , THE TOWER ADVISED FLAMES & SMOKE. FLT CREW SHUT THE NR 1 ENGINE DOWN. MAINTENANCE DETERMINED THE SMOKE WAS DUE TO OIL LEAKING IN THE CNA, TAIL PIPE. : MAINTENANCE REPLACED THE NR 1 ENGINE IAW TASK CARD 26L40071001.