As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE WARNING MESSAGE ON LANDING 2500 AGL 180 KTS, RAN QRH, CYCLED GEAR TWICE HAD TO PULL MANUAL EXTENSION. NOSE GEAR CAME DOWN AND SHOWED DOWN AND LOCKED ON TOUCHDOWN RATE OF DESCENT WAS 100 FPM. REMOVED AND REPLACED NOSE LANDING GEAR SELECTOR VALVE IAW CRJ 200 AMM 32-33-10. OPERATIONS CHECKS GOOD.