As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A LANDING GEAR AIR/GROUND FAIL MESSAGE AFTER GEAR RETRACTION. THE MESSAGE THEN CLEARED UNTIL THE GEAR WAS EXTENDED AND REMAINED ON UNTIL THE AIRCRAFT LANDED BACK AT CLE. MAINTENANCE INSPECTED AND FOUND THE NOSE LANDING GEAR WEIGHT-ON-WHEELS PROX SWITCH FAILING INTERMITTENTLY. THE PROX SWITCH WAS REPLACED AND THE NOSE LANDING GEAR WEIGHT-ON-WHEELS PROX SWITCH HARNESS AS A PRECAUTION. THE AIRCRAFT WAS THEN TEST FLOWN WITH NO FURTHER DEFECTS NOTED.