As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED GEAR DISAGREE WARNING MESSAGE AFTER SELECTING GEAR DOWN FOR LANDING. RAN QRH, LANDING GEAR EXTENDED WITH MANUAL RELEASE. (FLIGHT 5325 - FILED CLOSED) TROUBLESHOT GEAR DISAGREE WARNING MESSAGE PER CRJ200 FIM 32-60-00. REMOVED AND REPLACED MLG SELECTOR VALVE IN REFERENCE TO CRJ200 AMM 32-32-10. OPS CHECK AND LEAK CHECK GOOD. AC OKAY FOR RETURN TO SERVICE.