As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LG AIR/GND FAIL EICAS CAUTION DURING GEAR EXTENSION. WENT AWAY DURING GO AROUND."TRANSFERRED TO NRWC 668-ORD-05302" DECLARED EMERGENCY-C/A- RAR RH NLG ACTUATOR. REF NRWC 688-ORD-05302 FOR CORRECTIVE ACTIONS TAKEN.OPS CHECK GOOD. REF NWC 688-ORD-05302 FOR CORRECTIVE ACTIONS TAKEN. PERFORMED EXTENSION AND RETRACTION TEST IAW EMB 145 AMM 32-30-00. NO DEFECTS NOTED.