What was found
ETOPS SIGNIFICANT SYS - AILERON LOCKOUT EICAS DURING APPROACH, 160 KNTS WITH FLAPS 20 SELECTED, CONTROLS FELT NORMAL, LIGHT WENT OUT AFTER LANDING. BITE SAMS IAW FIM 27-11-00, NO FAULTS NOTED, EICAS MSG AILERON LOCKOUT CLEARED, EXTINGUISHED, OK TO CONTINUE.