As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3257, THE CREW REPORTED THE NR 1 ENGINE WAS SMOKING AFTER SHUTDOWN. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 1 ENGINE SHAFT PLUG IAW MM 72-59-15. THE TEST OF THE ENGINE WAS GOOD IAW RR MM 72-00-00-710-801. THE AIRCRAFT WAS RETURNED TO SERVICE.