As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3308 ELECTRIC ODOR ON DESCENT. CORRECTIVE ACTION: INSPECTED GLARESHIELD LIGHTS. PERFORMED GVI OF APU COMPARTMENT, APU BATTERY AND APU BCL. REPLACED FWD AND AFT RECIRC FAN FILTERS. REPLACED LEFT RECIRC FAN. FOUND CIRCUIT BREAKER TRIP EXTERNAL HORN MESSAGE ON ECAM. HORNS SMOKED THE TRIPS BEAKER. REPLACED MECHANIC CALL HORN. CANNOT DUPLICATE SMELL. (7338537)