What was found
DESCENDING THROUGH FL200 HEARD VERY LOUD BANG FOLLOWED BY LEFT ENGINE FAILURE. AFTER ARRIVING AT SIGNATURE I FOUND THE LEFT ENGINE COWLING HAD FALLEN OFF THE AIRCRAFT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DESCENDING THROUGH FL200 HEARD VERY LOUD BANG FOLLOWED BY LEFT ENGINE FAILURE. AFTER ARRIVING AT SIGNATURE I FOUND THE LEFT ENGINE COWLING HAD FALLEN OFF THE AIRCRAFT.