As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: THROUGH 13000' SWEAT, LOCKER ROOM,DIRTY SOCK, MILD/MODERATE /PERSISTANT ODOR THROUGH FLIGHT DECK ONLY, SWITCHED TO APU BLEED NO MORE ODOR WAS PRESENT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU DUE TO FINDING OIL LEAKING FROM THE APU LOAD COMPESSOR DRAIN. **SUPPLEMENTAL REPORT FOR AALA202309188726: MAINTENANCE REPLACED THE APU PER TASK CARD 26L31049003 AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK.** (CLOSED)