As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT DEPARTURE SMOKE WAS FOUND COMING FROM THE FLOOR VENTS AT ROW 20A. THE AIRCRAFT WAS GROUNDED AND REMOVED FROM SERVICE. MAINTENANCE FOUND THE LEFT STATIC PORT HEATER WAS OVERHEATED AND BURNED P/N 105846-1. THE HEATER BLANKET WAS REMOVED AND REPLACED PER AMM.