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 CABIN ODOR DIRTY SOCK SMELL BEGINNING OF TOP OF DESCENT, APU WAS OFF. MAINTENANCE PERFORMED 26L00021001 A320F SMOKE ODOR FUMES INITIAL TROUBLESHOOTING, FOUND APU OIL LEAK TO BE CAUSE OF SOF EVENT. ***SUPPLEMENTAL INFORMATION: MAINTENANCE REMOVED AND REPLACED APU IAW JOB CARD 26L00021004, OPS AND LEAK CHECK GOOD.*** (CLOSED)