As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SIMULTANEOUSLY HAD "ELEVATOR FEEL" CAUTION ILLUMINATE, AUTOPILOT DISENGAGED (HSI JET TO FO), AND CAPTAIN HAD "ATT FAIL" "HDG FAIL" AND IVSI FAIL"" ON CAPT PFD. SWITCHED CAPTAIN'S EFIS ATT/HDG SOURCE FROM NORM TO 2 AND ACC CAPTAIN PFD INFO RETURNED TO NORMAL. EVEN AFTER FAILURE, CAPTAINS AIRSPEED AND ALTITUDE WORKED NORMALLY. RETURNED TO THE FIELD. LANDING UNEVENTFUL. REMOVED AND REPLACED THE NR 1 AHRU, OPS CHECKED GOOD IAW 6342101. RETURNED TO SERVICE.