What was found
FLT 353, BOS-DUB/ (ETOPS) "SMOKE CLASS 2 MAINT MSG ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM DISPLAY 2, FAULTS INDICATED BY SMOKE; RESOLVED ON W/O: 1423668 TASKCARD: NR-00001, PERFORMED BITE TEST OF SDF. BITE TEST OKAY. REF AMM 26-10-00-740-801. NO FAULTS AT THIS TIME. MX-4 UPDATED PLACARD REMOVED.