What was found
TURNING BASE, LEG TO BUD AIRPORT, RW31L MASTER CAUTION AND ECAM SMOKE, AVIONICS IND ILLUMINATED, A/C LANDED ASAP. AVIONICS SMOKE PROCEDURE ACCOMPLISHED. INDICATION CONTINUES INTERMITTENTLY. EMERGENCY DECLARED T/S PERFORMED IAW TSM 26-15-00 PG 101 FIG 102. COCKPIT DUCT SMOKE DETECTOR 13WA REPLACED IAW AMM 26-15-12-04 PG 1-4, TEST PERF IAW 26-15-00-05 PG 1-2, FOUND OK, P/N ON: CGDU2000-00, S/N ON: 1347.