As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BIL- ON FLIGHT 2508 AFTER TAKEOFF AUTOPILOT TRIM IS SHOWING A CAUTION MESSAGE. DISCONNECTED AUTOPILOT, RETRIMMED, THEN RECONNECTED PER CHECKLIST. NO FURTHER INCIDENTS. COMPLIED WITH AUTOPILOT SYSTEM OPERATIONAL CHECK IAW CRJ AMM 22-11-00-710-802 AND 22-11-24-710-801. NO PARTS REPLACED. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.