As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON THE APPROACH, THE CREW RECEIVED A LG AIR/GRND FAIL MESSAGE WHEN THE LANDING GEAR WAS SELECTED DOWN. THE INDICATION CLEARED WHEN ALL GEAR SHOWED GREEN. A NORMAL LANDING WAS MADE WITH NO INCIDENT. A LOOSE CONNECTOR WAS FOUND ON THE RIGHT MAIN LANDING GEAR PROXIMITY SWITCH. ALL CONNECTORS FOR THE AIR/GROUND PROXIMITY SWITCHES WERE CLEANED AND THE LOOSE CONNECTOR WAS SECURED. OPERATIONAL CHECKS ARE GOOD IAW EMB 145 AMM 32-63-00.