As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: CREW REPORTED DIRTY SOCK SMELL ON TAXI OUT, TAKE OFF, DESCENT AND APPROACH. MAINTENANCE HAS ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202205234652: MAINTENANCE FOUND OIL COMING FROM THE LOAD COMPRESSOR SEAL WITNESS DRAIN PORT. REPLACED APU PER TASK CARD 26L31049005. ** (CLOSED)