As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING DESCENT AROUND 6000 THE FLIGHT CREW NOTICED A DIRTY SOCK SMELL THAT REMAINED UNTIL AFTER LANDING. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU DUE TO FINDING EVIDENCE OF OIL LEAKS. **SUPPLEMENTAL REPORT FOR AALA202302229649: MAINTENANCE REPLACED THE APU PER TASK CARD 26L31049003. ** (CLOSED)