As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT CREW REPORTED DURING TAXI TO THE ARRIVAL GATE THAT THE CABIN BEGAN TO FILL WITH ELECTRICAL SMOKE. THE FLIGHT ATTENDANT REPORTED THE SOURCE OF SMOKE INITIATED AT ROW 5A SIDE PANEL LIGHTING. SIDE WALL LIGHTING BALLAST REPLACED.