As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED LOUD BANG WAS HEARD AND LEFT ENGINE FAILED (SINGLE ENGINE TIME 7 MINS). EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT ENGINE AT DFW ON 07/27/2011. SYSTEM GROUND CHECK NORMAL OPERATION.