As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALTITUDE AND IAS DISAGREE. CAPTAIN`S AIR DATA SWITCH SELECTED RESTORES PROPER INDICATIONS. FOUND LEFT ADC FAULTING LEFT AOA, FOUND LEFT AOA STIFF, AND BINDING. REPLACED LEFT AOA AND LEFT ADC, OPS CHECKED GOOD. COMPLETED CAT III TEST 30, TESTED GOOD.