As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 2704 TEN MINUTES AFTER NR 1 ENGINE SHUTDOWN RESIDUE WHITE SMOKE WAS STILL COMING OUT OF REAR END OF ENGINE DURING POST FLIGHT. THE SMOKE WAS NOTICED BY CREW AND RAMPERS. THE AIRCRAFT WAS REMOVED FROM SERVICE. ACCOMPLISHED LEFT ENGINE CHANGE IAW WORK CARD 71-000-00. ALL OPERATIONAL AND LEAK CHECKS WERE NORMAL. REFERENCE NRWC 622-DFW-00501. THE AIRCRAFT WAS RETURNED TO SERVICE.