As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRST OFFICERS AHRS SUPPLIES ERRONEOUS PITCH INFORMATION IN FLIGHT. PITCH VARIES 5 DEGREES NOSE UP AND DOWN. CAPTAINS FD WONT SYNC TO AIRCRAFT ATTITUDE. REPLACED NR 2 AHRS AS REQUIRED. SYSTEM OPS CHECK GOOD IAW 34-21-02. P/N 622-6190-204, S/N ON 585, S/N OFF 3085.