As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PACKS 1 AND 2 WERE REPORTED AS HAVING A BURNED OIL ODOR IN COCKPIT AND CABIN WHEN ON BLEED FROM ENGINES AND APU. MAINTENANCE INSPECTED AND PERFORMED FIM 72-00-00-810-808A AND TASK 21-20-00-100-805 WITH NO BURNED OIL ODOR WHEN OPERATING OFF OF ENGINE OR APU BLEEDS, AND ACFT WAS APPROVED FOR RETURN TO SERVICE.