As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 6094, CMH TO BOS. UPON GEAR RETRACTION THE CREW RECEIVED A LG AIR/GND FAIL EICAS MESSAGE. THIRTY SECONDS LATER RECEIVED A TAKEOFF FLAPS MESSAGE WITH NO OTHER MESSAGES. THE GEAR RETRACTED NORMALLY, AND THE QRH WAS FOLLOWED AND THE AIRCRAFT RETURNED TO CMH AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE LEFT MAIN LANDING GEAR AFT WOW PROX SWITCH DAMAGED. THE FORWARD AND AFT WOW PROX SWITCHES WERE REPLACED AND THE AIR/GROUND SYSTEM THEN OPERATED NORMALLY.