As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED AN AUOTPILOT TRIM IS ND MESSAGE AND THE AUTO PILOT DISENGAGED. INTERMITTENT E WAS DISPLAYED ON BOTH CAPTAIN'S AND FIRST OFFICER'S PFD'S. (FLT 5204) REPLACED NR 1 AHRS COMPUTER AND FLIGHT CONTROL PANEL IN REFERENCE TO AMM. P/N: 622-9336-400 S/N OFF: YYGL; P/N OFF: 822-0044-001 S/N OFF: 353.