As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LP# 3084898) LAST 10 MINUTES OF FLIGHT, AIRCRAFT HAD A POTENTIALLY TOXIC WET SOCK SMELL THAT BEGAN NEAR FORWARD GALLEY AND MIGRATED TO BACK OF AIRCRAFT. FOUND OIL INGESTION THRU APU INLET AND OIL LEAKING FROM SERVICING CAP. TIGHTENED OIL CAP LOCKING MECHANISM. REMOVED AND REPLACED LEFT AND RIGHT RECIRCULATION FAN FILTERS, OIL CAP AND OZONE CONVERTERS. COMPLY WITH NO GO ODI STEPS. OPERATION CHECKS GOOD, NO SNELL NOTED.