As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 40,000' IN LEVEL FLIGHT, IAS DISAGREE MSG ON EICAS. CAPT'S AIRSPEED IND MAINTAINED 0.807M WHILE FO'S VARIED BY AS MUCH AS 0.03M & 12 KIAS. STBY A/S IND WAS CONCURRENT. FO'S A/S IND & CA'S A/S DETERMINED AS UNRELIABLE. ASSOC AIL LOCKOUT & RUDDER RATIO MSG ALSO PRESENT.(<P>REMOVED & REPLACED WITH NEW LH ADC THEN FUNCTIONAL TEST OF BOTH ADC PASSED IAW B767 AMM 34-12-01/401. NOTIFIED TO MCC. REF AIPC 34-12-01-02.</P>)