As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GRU - AT 8000 FEET LEFT ENGINE HAD AN UNCOMMANDED SHUTDOWN AFTER A STRONG BANG. RETURNED TO GRU AND LANDED WITHOUT INCIDENT. INSPECTED LEFT ENGINE INLET AND EXHAUST AND NO DAMAGE FOUND. DURING INSPECITONS FOUND SEVERAL METALIC DEBRIS ON EXHAUST. REPLACED NUMBER ONE ENGINE. SYSTEM GROUND CHECKED NORMAL OPERATION.