As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE EXPERIENCED AND LOUD BANG FOLLOWED BY A VIBRATION AND FLAME OUT. PILOTS SHUTDOWN ENGINE IAW EMERGENCY PROCEDURES, DECLARED AN EMERGENCY AND LANDED AT WITHOUT FURTHER INCIDENT. WHEN ENGINE IS ROTATED BY HAND A GRINDING NOISE IS HEARD AND RESISTANCE IS FELT IN EITHER DIRECTION.