What was found
ETOPS SIGNIFICANT SYS - ATB - IAS DISAGREE EICAS DISPLAY SELECTED AIR DATA SWITCH ON F/O SIDE - A/S GOOD - RUDDER RATIO, AILERON LOCKOUT REMAINED ILLUMINATED. REMOVED AND REPLACED NR 2 ADC COMPUTER, GND CHECKED OK IAW AMM 34-12-01. RUDDER RATIO GND CHECKED OK IAW FIM 27-21-00 FIG 104, AIL L/O GND CHECKED OK IAW FIM 27-11-00 FIG 104. ACFT OK FOR SERVICE.