As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT THE NR 1 ADC ON THE PILOTS SIDE FAILED DURING FLIGHT. MX EVALUATED & FOUND THAT THE NR 1 ADC WAS DEFECTIVE. THE DEFECTIVE UNIT PN 822-0389-433 SN 4220 WAS REMOVED & AN OVERHAULED UNIT WAS INSTALLED. FUNCTIONAL CHECKS WERE SATISFACTORY & THE ACFT WAS RETURNED TO SERVICE.