As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FLT 4083 - ON CLIMB-OUT, CREW WAS ALERTED BY A CAS MESSAGE ADC 1 FAIL. CREW ELECTED TO RETURN TO FIELD, AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. PIT MAINTENANCE AIR DATA COMPUTER IAW MM 34-11-01. GROUND CHECKED GOOD, AIRCRAFT RETURNED TO SERVICE.