As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED A STRONG CHEMICAL ODOR ON FINAL DESCENT IN THE AFT OF THE AIRCRAFT WHICH GRADUALLY DISSIPATED AFTER LANDING. MAINTENANCE HAS ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202311039044: MAINTENANCE FOUND THE APU OIL COOLER AND THE APU COOLING FAN (AALA202312127938) LEAKING OIL AND REPLACED BOTH ITEMS PER AMM 49-52-51 AND 49-91-44. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.**(CLOSED)