What was found
FLT 792, ACFT EXPERIENCED NR 1 ENG FAILURE AFTER TAKEOFF. CAPTAIN REPORTED A LOUD BANG PRIOR TO FINAL FLAP RETRACTION PROBABLY FROM A COMPRESSOR STALL. THEN EXPERIENCED ENG SURGING, VIBRATION AND A MAX ENG TEMP READING. THE CREW SHUTDOWN ENG AND RETURNED TO NAS AFTER DECLARING AN EMERGENCY. CAPTAIN ALSO REPORTED NO ECAM WARNINGS OF ENG PROBLEMS. FLIGHT LANDED WITHOUT FURTHER INCIDENT. (S) MX R&R THE NR 1 ENGINE. ENGINE RUN/LEAK CHECK GOOD. VENDOR TEARDOWN REPORT INDICATES THE ANTI ROTATION PIN AT THE VSV SHROUD LIBERATED CAUSING DAMAGE TO THE COMPRESSOR.