As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A STINKY SOCK SMELL THAT STARTED AT 12,000 FEET DURING DESCENT. MAINTENANCE FOUND APU OIL LEAK AT TURBINE BEARING LUBE TUBE ASSEMBLY. REPLACED SEALS ON LUBE TUBES AND TUBE ASSEMBLY PER AMM 49-91-53-000-001-A. LEAK CHECK GOOD.