As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3272 - CREW REPORTED SMOKE IN CABIN. MAINTENANCE FOUND THE NR 1 ENGINE ZERO CARBON SEAL LEAKING OIL. CARBON SEAL REMOVED AND REPLACED BY ROLLS ROYCE MECHANIC IAW ALLISON MM. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (X)