As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE CREW FELT STRONG AIRFRAME VIBRATION FOLLOWED BY EICAS INDICATION OF FLAME OUT AND ENGINE DEGRADED MESSAGES. THE SYSTEM THEN PERFORMED AN AUTOMATIC RELIGHT. THIS SEQUENCE OF EVENTS OCCURED TWICE. AFTER SECOND RELIGHT THE CREW RETARDED THROTTLE LEVERS TO IDLE AND THE ENGINE INDICATIONS REMAINED STABLE WITH NO ADDITIONAL AIRFRAME VIBRATIONS NOTED.