What was found
FLIGHT 5889 - CLT TO CLE. IMMEDIATELY AFTER TAKEOFF THE CREW RECEIVED AN LG AIR/GND FAIL MESSAGE ON EICAS. WHEN THE CREW ATTEMPTED TO RAISE THE LANDING GEAR, BUT THE HANDLE WAS STUCK IN THE DOWN POSITION. WHEN ATTEMPTING TO RAISE THE FLAPS A TAKEOFF CONFIG FLAPS MESSAGE WAS DISPLAYED ON EICAS. THE QRH WAS FOLLOWED AND THE AIRCRAFT RETURNED TO CLT AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS FERRIED TO CMH FOR FURTHER TROUBLESHOOTING. DURING TROUBLESHOOTING IN CMH THE RIGHT FORWARD MAIN LANDING GEAR WEIGHT-ON-WHEELS HARNESS WAS FOUND BAD. THE HARNESS WAS REPLACED AND THE AIR GROUND SYSTEM OPERATED NORMALLY.