As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - CREW REPORTED SMOKE IN CABIN AND COCKPIT AFTER T/O AND RETURNED TO GATE. THE A/C WAS MX FERRIED TO TYS FOR REPAIR. TYS REMOVED AND REPLACED THE NR 1 ENGINE AND THE LT PACK CONDENSER/MIXER. ALL OPS AND LEAK CHECKS GOOD AND PROBLEM WAS RESOLVED.