As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS SMALL HINT OF OIL SMELL FROM THE PACKS IN CRUISE. ON DESCENT ODOR INCREASED TO A VERY LARGE SMELL. MAINTENANCE FOUND OIL LEAKING FROM APU BEARING CAVITY LUBRICATION TUBES. MAINTENANCE REMOVED AND REPLACED APU TURBINE BEARING CAVITY LUBRICATION TUBES PACKINGS IAW AMM 49-91-53-400-001-A. LEAK CHECKS GOOD.