As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMBER 1 ENG APPEARS TO HAVE MORE SMOKE THAN NORMAL AFTER ENG SHUT DOWN FOR MORE THAN 30MIN THIS FAULT SYMPTOM OCCURS ON THE GROUND WHEN THE ENGINE IS SHUTDOWN. FUMES, SMOKE, OR OIL DROPS FROM THE CENTER VENT TUBE AFTER ENGINE SHUTDOWN IS A USUAL CONDITION. REF FIM 71-00 TASK 899. SMOKE APPEARED TO BE CONSISTENT WITH THE USUAL AMOUNT OF SMOKE EMINATING AFTER SHUTDOWN.