As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXIOUT, HAD SMOKE IN CABIN. AIRCRAFT WAS EVACUATED. FOUND AILERON CONTROL MODULE WITH BLOWN SEAL AND CRACKED HOUSING, CAUSING HYDRAULIC LEAK AND CONTAMINATING APU INLET, WHICH CAUSED SMOKE IN CABIN. REPLACED MODULE, OPERATION NORMAL.