As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IFSD AFTER A NORMAL START THE GROUND CREW SHUTDOWN THE ENG AFTER THE ENGINE EXHIBITED FLAMES OUT OF THE EXHAUST AND THE CABIN FILLED WITH SMOKE. AFTER THE SHUTDOWN THE PILOT FOUND A PUDDLE OF ENGINE OIL ON THE GROUND BELOW THE ENGINE. NO ABNORMAL ENGINE PARAMETERS WERE NOTED BEFORE, DURING OR AFTER THE START SEQUENCE.