As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, RECEIVED A LANDING GEAR AIR/GROUND FAIL MESSAGE IN FLIGHT. THE CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE SERVICE THE LEFT, RIGHT, AND NOSE LANDING GEAR STRUTS. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.