As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2147, ADI ROLL MISMATCH. FIRST OFFICERS ADI SHOWED 10 DEGREES RIGHT BANK AND 5 DEGREES PITCH DOWN. REINITIALIZED AHRS. ADI'S CHECK GOOD. ADI ROLL MISMATCH MESSAGE EXTINGUISHED. NO PARTS REPLACED AIRCRAFT RETURNED TO SERVICE.