As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 1529 - IAH - THE AIRCRAFT WAS RETURNED TO IAH FOR SMOKE IN CABIN AFTER TAKEOFF. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RT AIR CYCLE MACHINE LEAKING OIL. THE RIGHT AIR CYCLE MACHINE WAS REMOVED AND REPLACED. AN OPERATIONAL CHECK OF THE RT AIR CYCLE MACHINE WAS NORMAL WITH NO LEAKS NOTED. (W)