What was found
LE SLAT ASYM EICAS B LE SLAT ASYMMETRY CREW DEBRIEF: ON APPROACH WHEN FLAPS/SLATS WERE EXTENDED, GOT A SECOND REPORT. LE SLAT ASSYMETRY EICAS. NO ABNORMAL ROLL EXPERIENCED. FLAPS REMAIN EXTENDED AND HANDLE IS AT 20. PER FIM 27-81 FAULT TREE 809 SYSTEM IS OK. INSPECTED AND CYCLED FLIGHT CONTROLS. NO FAULTS PRESENT. OPS CHECK GOOD.PERFORMED BITE CK OF FSEU PER REF FIM 27-51 FAULT TREE 809. FOUND MESSAGE NUMBER 27-51333. REMOVED AND REPLACED FSEU REF AMM 27-51-01. OPS CK GOOD. NO STATUS MESSAGE ON EICAS.