As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHV - FLT 3471 - CREW REPORTED SHARP ELECTRICAL/SMOKE SMELL IN COCKPIT AFTER ARRIVAL AND TAXI TO THE GATE. AVIONICS MASTER SMOKE WARNING ILLUMINATED. MAINTENANCE COULD NOT DUPLICATE DISCREPANCY. PERFORMED GROUND WITH ALL SYSTEMS ON AND FOUND NO DEFECT AT THIS TIME. AIRCRAFT WAS RETURNED TO SERVICE. (M)