What was found
AT 900' AGL, NR 1 ENG "BANG" ACCOMPANIED BY ECAM "COMPRESSOR" & "ENG STALL" WITHIN 5 SECS. SHUT DOWN NR 1 ENG IAW FCOM & DECLARED EMERG. A/C RETURNED. MX EXAMINED INLET, EXHAUST, BLEED VALVES & FOUND NO DAMAGE. BORESCOPE OF HIGH PRESS COMPRESSURE 3 & 6 PERFORMED IAW AMM 72-00-00-700-016. NO DEFECTS NOTED. PERFORMED A POWER RUN IAW F5M71312. ENG RUN WAS SUCCESSFUL. CRITICAL ALERT FOLLOW-UP ISSUED TO PERFORM FOLLOWING, ACCOMP BORESCOPE NR 1 ENG. ACCOMP VSV LUBE INSPECT & RECORD PRE & POST LUBE TQ VALUES. ACCOMP A GVI OF ALL VSV LINKAGE. REPLACE VSV ACT. ACCOMP INSPECT OF PB SENSE LINE. R/R EEC. PERFORM TEST OF ALL 4 BLEED VALVES. CHECK IP CHK VLV. MX REPLACED NR 1 ENG VSV ACT & NR 1 EEC.