As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(B-18712) ACFT ENROUTE, DURING CLIMB AT 1000 FT FLT CREW HEARD A NOISE, AT 5000 FT RETARDED NR 3 THRUST LEVER THEN NOISE GONE. CLIMB 7000 TO 9000 FT T/L ADVANCED BANG SOUND COME OUT AGAIN, THOUGH ALL ENGINE PARAMETERS ARE WITHIN LIMIT. FLT CREW CONFIRMED THE ABNORMAL NOISE COME FROM NR 3 ENGINE THEN FOLLOWED QRH TO SHUTDOWN NR 3 ENGINE. ACFT AIR TURNED BACK TO DEPARTURE. NR 3 ENGINE WAS REMOVED FROM SERVICE.