What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS SHORTLY BEFORE LANDING, ELECTRICAL SMELL OCCURRED IN THE COCKPIT. SHORTLY AFTER LANDING VENT EXTRACT ECAM APPEARED. FOLLOW ECAM PROCEDURE AND SELECTED EXTRACT TO OVERIDE. MAINTENANCE TROUBLESHOT IAW JOB CARD 26L00021001, FOUND AVIONICS EXTRACT FAN TO BE SOURCE OF ODOR. NO EVIDENCE OF ENGINE OR APU INGESTION. NO EVIDENCE OF OIL, HYDRAULIC, FUEL LEAK, BLEED OR ECS CONTAMINATION. REMOVED AND REPLACED AVIONICS EXTRACT FAN IAW AMM 21-26-51, OPS CHECK GOOD.