What was found
RED FLAGS (ALT, IAS, V/S) ON LT PRIMARY FLIGHT DISPLAY. REPLACED ADC1 IAW 34-13-01 AND PURGED PITOT SYSTEM IAW MM 34-11-00, ADC.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
RED FLAGS (ALT, IAS, V/S) ON LT PRIMARY FLIGHT DISPLAY. REPLACED ADC1 IAW 34-13-01 AND PURGED PITOT SYSTEM IAW MM 34-11-00, ADC.