As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLT 5815 THE CREW REPORTED A LANDING GEAR AIR GROUND FAIL MESSAGE AND WAS UNABLE TO RAISE GEAR ON DEPARTURE. THE AIRCRAFT RETURNED TO CLE AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE RIGHT GEAR WOW PROXIMITY SWITCHES. OPERATIONAL CHECKS WERE GOOD.