What was found
ATB TO ATL, DUE TO AFT CARGO DOOR ECAM MESSAGE. DOOR AFT CARGO IN FLIGHT SHOWED OPEN. FWD TO MCO/PLAC PER MEL 52-70-01K. M PROCESS C/W. T/S PER A319 TSM 32-31-00-810-886-A, PERFORMED OPS TEST OF AFT CARGO DOOR PER AMM 52-32-00-710-001, NO FAULTS FOUND. REMOVED AND REPLACED AFT CARGO DOOR HANDLE PROXIMITY SW (34WV) PER AMM 52-71. OPS CHECK GOOD AND NO DEFECTS NOTED. MEL/PLACARD REMOVED. A/C OK FOR SVC. (LP: 9192412, AIRCRAFT WAS GROUNDED)