As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3786 UPON DESCENT INTO ORD RECEIVED "ELEVATOR SPLIT" CAUTION MESSAGE. FOLLOWED AOM VOL 1 CHECKLIST. FLAP 20 LANDING PER CHECKLIST WAS NORMAL. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED NR 1 AND NR 2 DCU'S IAW CRJ 700 AMM 31-41-04 OPERATIONAL WAS CHECK GOOD. REF ETA-CR-3100 -003 FOR ALTERNATE PART# CHANGE. THE AIRCRAFT WAS RETURNED TO SERVICE.