As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FUME/ODOR EVENT DURING DESCENT. FOLLOWED QUICK ACTIONS AND THE ODOR WENT AWAY. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202206213194: MAINTENANCE FOUND THE APU OIL SERVICING CAP LEVER LOOSE AND LEAKING. RE-INSTALLED APU OIL SERVICING CAP. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED. ** (CLOSED)