As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2189 - EWR - CREW REPORTED ENG 1 PRODUCING WHITE/LIGHT GRAY SMOKE AFTER ENGINE SHUT DOWN. LARGE QUANTITY COMING OUT FROM FRONT AND BACK. OIL, HYD, FUEL INDICATIONS ARE NORMAL. THIS IS A REPEAT WRITE UP. EWR MX PERFORMED TROUBLESHOOTING AND FOUND AFT SUMP SHAFT PLUG NEEDED REPLACEMENT. MX REMOVED AND REPLACED AFT SUMP SHAFT PLUG IAW RR MM 72-59-10 AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.