As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO PILOT DISCONNECTED WITH RED MSG ON AP CONTROL PANEL. DISPLAY MSG ON MAP AND PITCH AND ROLL FLAGS ON EFIS DISPLAY ON BOTH SIDES. CAPT AND FO EFIS SCREENS NOT WORKING CORRECTLY. (FLT 5409) REPLACED NR 1 AND NR 2 AHRS COMPUTERS AND NR 2 DPU / (LT) P/N 622-6190-204 S/N OFF 2643 / (RT) P/N 622-6190-204 S/N OFF 2620 / P/N 622-7711-003 S/N OFF 7002.