What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED ON APPROACH INTO DFW DUE TO THE FLIGHT CREW REPORTED RECIEIVEING AN LGCIU #2 FAULT ECAM MESSAGE. THE FLIGHT CREW PERFORMED A GO AROUND AND ACCOMPLISHED THE CHECKLIST PROCEDURES AND NOTED THERE WAS NO COMPUTER RESET AVAILABLE IN THE AIR. THE FLIGHT CREW REPORTED THAT UPON LANDING GEAR EXTENSION THEY HAD 3 GREEN LIGHT AND THE AIRCRAFT LANDED SAFELY AT DFW WHERE IT TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE FOUND FAULT CODE 32-31-71 FOR LANDING GEAR CONTROL INTERFACE UNIT (LGCIU) #2 AND REPLACED IT PER AMM 33-31-71. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO FAULTS NOTED.