As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RED X ON AIRSPEED- ALT- AND VERTICAL SPEED DURING BEGINING OF APPROACH. BROKE OFF APPROACH AND DIVERTED TO ABI- VFR CONDITIONS. RED X'S OCCURED ON MULTIPLE OCCASIONS DURING FLIGHT CA SIDE ONLY. REMOVED AND REPLACED ADC 1 IAW AMM 34-15-01 LEAK CHECK GOOD OPS CHECK GOOD.