As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT ON APPROACH NOTED ON BOTH COCKPIT AND CABIN. -PERFORMED TSM 05-50-00. FOR IDENTIFICATION OF CABIN ODOR. R/R RECIRCULATION FILTERS AMM 21-21-41 AS PRECAUTIONARY. PERFORMED INSP OF APU FOR OIL LEAKS. NO LEAKS NOTED. MOC NOTIFIED. PERFORMED ENG RUN UP IAW AMM 71-00-00. NO ODOR NOTED.