As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG BURNING ODOR IN FLIGHT DECK AND CABIN AFTER REDUCING POWER ON APPROACH. SELECTED BLEEDS OFF AND ODOR WENT AWAY. SELECTED BLEEDS BACK ON, ON GROUND NO BURNING ODOR NOTICED. INSPECTED AND FOUND NR 2 ENGINE OIL LEVEL ONE QUART OVER SERVICED. SERVICED TO CORRECT LEVEL, RAN NR 1 AND NR 2 ENGINES AND APU FOR ONE HOUR, NO BURNING ODOR EVIDENT AT THIS TIME, CHECKED HP BLEED VALVE FOR CONTAMINATION, NONE FOUND.