What was found
PDIS 723 26-12 0737 18JAN22 IND OPEN U ON APPROACH DESCENDING THROUGH 1500 FEET ECAM AVIONICS SMOKE ACTIVATED. UPON LANDING STARTED TO SMELL FUMES EXITED RUNWAY AND SHUT DOWN FUMES DISSIPATED. EMERGENCY WAS DECLARED. SHGN 18JAN22 11:59 IND PERFORMED INSPECTION OF FORWARD AVIONICS COMPARTMENT FOR SIGNS OF SMOKE. NONE FOUND. PERFORMED OPERATIONAL CHECK OF SMOKE DETECTION SYSTEM REF A300 AMM 26-15-00-05. NO DEFECTS NOTED. SHGN 18JAN22 21:28 IND REPLACED BOTH 11WA AND 13WA SMOKE DETECTORS REF. A300-600 MM 26-15-12-04 BOTH DETECTORS OPS CHECK NORMAL. ITEM REMAINS I/W. FACT 19JAN22 01:52 IND COMPLIED WITH AMM 21-51-00-03 AIR COOLING SYSTEM - SERVICING (DUCT BURN OUT). NO DEFECTS, ODORS, OR FAULTS FOUND WITH AIR CONDITIONING SYSTEM. ACFT OK TO CONTINUE.