As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE FO PFD LOST ALTITUDE TAPE AND ALTIMETER SETTING AND VSI INDICATION. RED BOXES ALT AND VSI DISPLAYED. UNABLE TO RESET. SWITCHED TO ADC 1 TO REGAIN INDICATIONS. RETURNED TO SLC. PERFORMED AIR DATA SYSTEM FUNCTIONAL TEST. NO FAULTS FOUND ON NR 2 ADC.