What was found
AIRCRAFT IS GROUNDED. ATL - PHX RETURNED TO ATL ACCOUNT ENGINE NR 1 COMPRESSOR STALL AND EGT ABOVE THE LIMIT. CAPTAIN SHUT THE ENGINE DOWN AND RETURNED. TOTAL SINGLE ENGINE FLIGHT WAS APPROXIMATELY 5 TO 6 MINUTES. EMERGENCY WAS DECLARED AND FLIGHT LANDED OVERWEIGHT WITHOUT FURTHER INCIDENT. REQUEST READ OF DFDR DATA PER JOB CARD 26T00031001 FOR PURPOSE OF INVESTIGATING AN IN FLIGHT SHUT DOWN OF THE NR 1 ENGINE. ACCOMPLISHED DFDR DOWNLOAD AND DISTRIBUTED DATA PER J/C 26T00031001. REPLACED NR 1 ENGINE PER J/C 26L40071004 AND J/C 26L0071015, LEAK CHECKS AND OPERATIONS CHECKS NORMAL.