As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUMES DETECTED IN THE COCKPIT ON ARRIVAL PHASE AROUND 6,000 FEET. T/S PER A220 AMDS WORKCARD 0550-2001 FOUND LT ENGINE OVER SERVICED WITH OIL (27.4 QTS) ISOLATED ODOR TO LEFT ENGINE DURING IDLE RUN. SERVICED OIL SYSTEM TO PROPER LEVELS PER A220 AMP BD500-A-J79-00. C/W AMDS WORKCARD 0550-2003 BURN OUT C/W NO ODOR PRESENT. AS PRECAUTION R/R RECIRC FILTERS PER AMP REF BD500 -A-J21-22. (LP# 6743320)