What was found
MCI - FLIGHT 3006, THE CREW REPORTED THAT UPON ROTATION, LANDING GEAR AIR GROUND FAIL MESSAGE APPEARED ON EICAS, AND THE GEAR WOULD NOT RETRACT. THE AIRCRAFT DIVERTED TO MCI WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED FUNCTIONAL CHECKS, AND OPERATIONAL CHECKS OF THE LANDING GEAR RETRACTION/EXTENSION SYSTEM WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.