As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4084 THE CREW REPORTED THAT WHILE CLIMBING THROUGH 7500 FEET HEARD A LOUD BOOM. ENGINE 1 AUTO SHUT DOWN AND WITH ENGINE 1 OUT AND ASSOICATED EICAS MESSAGES THE CREW DECLARED AN EMERGENCY. THE CREW RETURNED TO ORD AND LANDED WITHOUT INCIDENT. NO FIRE, SMOKE OR FUMES WERE REPORTED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 1 ENGINE IAW EMB WC 71-000-00. THE OPERATIONAL AND LEAK CHECKS WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.