As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW RETURNED THE AIRCRAFT TO ATL AFTER EXPERIENCING A COMPRESSOR STALL IN THE NR 1 ENGINE DURING CLIMB. THE ENGINE WAS KEPT RUNNING AT IDLE AND THE QRH WAS COMPLIED WITH. STATION CFR SAW FLAMES (IN THE ENGINE ONLY) SO THE FLIGHT CREW PULLED THE FIRE HANDLE FOR THE NR 1 ENGINE. MAINTENANCE FOUND TURBINE DAMAGE AND METAL IN TAIL PIPE SO THE ENGINE WAS REPLACED.