As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED AIR/GROUND FAIL MESSAGE AND GEAR HANDLE STUCK IN DOWN POSITION - RETURNED TO BNA. PERFORMED AIR/GROUND SYSTEM SIMULATION IAW EMB 32-63-00 AND LANDING GEAR EXTENSION AND RETRACTION IAW EMB 32-30-00 WITH NO DEFECTS NOTED. REMOVED AND REPLACED LANDING GEAR HANDLE IAW EMB 32-30-00. OPERATIONAL CHECK GOOD, AIRCRAFT RETURNED TO SERVICE.