As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ACRID FUMES ON THE GROUND AND DURING THE DESCENT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202206106084: MAINTENANCE FOUND OIL LEAKING FROM BETWEEN THE GEAR BOX AND APU. REPLACED APU AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER TASK CARD 26L31049003 . ** (CLOSED)