As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, CREW SMELLED BURNED OIL AND OBSERVED LIGHT SMOKE IN THE AFT CABIN. LECTED TO RETURN FOR INSPECTION. SMOKE AND ODOR DISSIPATED WITHIN MINUTES. AFTER INSPECTION OF ACFT, DETERMINED ODOR AND SMOKE TO HAVE ORIGINATED FROM SMALL AMOUNT OF ENGINE OIL THAT ACCUMULATED IN BLEED AIR SYS DURING ENGINE REMOVAL AND INSTALLATION. IT WAS DETERMINED NO PARTS OR COMPONENTS WERE DEFECTIVE.