As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: REFERENCE LP 224151 POSSIBLE FUME EVENT IN CABIN. REPORTED BY 2 PEOPLE. CORRECTIVE ACTION: PERFORMED INSPECTION OF THE APU UPON ODOR IN THE CABIN/FUMES IN THE CABIN/OIL SMOKE, LEVEL B. NO LEAKS NOTED. REPLACED RECIRCULATION FILTER CARTRIDGES. T/W NO. F9TAB2940C D/D 07/23. AMM 21-21-41-000-001-A, AMM 21-21-41-400-001-A, AMM 49-00-00-200-811-A