What was found
DURING TAXI OUT, SMOKE BEGAN TO ENTER AIRCRAFT CABIN. AIRCRAFT RETURNED TO THE GATE AND PASSENGERS DEPLANED THROUGH THE JET WAY. MAINTENANCE FOUND APU TO BE THE SOURCE OF SMOKE, RESIDUAL DE-ICE FLUID SUSPECTED. APU MEL'D.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING TAXI OUT, SMOKE BEGAN TO ENTER AIRCRAFT CABIN. AIRCRAFT RETURNED TO THE GATE AND PASSENGERS DEPLANED THROUGH THE JET WAY. MAINTENANCE FOUND APU TO BE THE SOURCE OF SMOKE, RESIDUAL DE-ICE FLUID SUSPECTED. APU MEL'D.