As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 50 FEET AFTER LEAVING RUNWAY IN STL, CABIN STARTED FILLING UP WITH SMOKE. AS A PRECAUTIONARY MEASURE, CREW DEPLANED AC ON TAXIWAY BEFORE REACHING GATE. NO INJURIES REPORTED, NO EMERGENCY WAS DECLARED. MX FOUND RT PACK OVERTEMPING - DEFERRED PER MEL 21-51-01.