As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON MAIN GEAR TOUCHDOWN RECEIVED NOSE GEAR YELLOW BOX. INITIATED G.A. AND RECEIVED UNSAFE CAUTION WITH NOSE GEAR RED. 3 GREEN NEXT TIME AROUND. EMERGENCY DECLARED. EMERGENCY VEHICLES ON STANDBY AS PRECAUTION. FOUND NLG DOWNLOCK PROX SENSORS PS1GA AND PS2GA TO BE OUT OF RIG. RIGGED PROX SENSORS PS1GA AND PS2GA IAW CRJ 200 AMM 32-61-05. OPS CHECK GOOD. ACFT OK FOR SERVICE.