As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GSO - PILOT REPORTED AIR/GROUND FAIL INDICATION MESSAGE ILLUMINATED CAUSING THE LANDING GEAR NOT TO RETRACT. THE AIRCRAFT RETURNED TO GSO AND LANDED WITHOUT INCIDENT. UPON LANDING THE AIR/GROUND FAIL MESSAGE CLEARED ITSELF. MAINTENANCE WAS UNABLE TO DUPLICATE THE FAIL MESSAGE AND PERFORMED A PRECAUTIONARY SYSTEM RESET WITHOUT FURTHER FAILURE INDICATIONS BEING NOTED.