What was found
TYS - A/C WAS DEPARTING CAE WHEN THE CREW GOT A MESSAGE ON THE EICAS OF LANDING GEAR AIR/GND FAILURE ON T/O. A/C RETURNED TO CAE AND WAS FERRIED TO TYS WITH RESTRICTIONS. UPON A SAFE ARRIVAL IN TYS, MAINTENANCE FOUND THE LEFT MLG REAR WOW PROX SWITCH OUT OF LIMITS. ADJUSTED THE GAP IAW EMB 145XR AMM 32-63-05; COMPLIED WITH THE GEAR EXTENSIONS AND RETRACTIONS TEST IAW EMB 145XR AMM 32-30-00. NO DISCREPANCIES NOTED AND WAS RELEASED FOR A TEST FLIGHT TO FURTHER EVALUATE. TEST FLIGHT WAS CANCELED DUE TO WEATHER SO THEREFORE A/C WAS REPO TO RIC TO VERIFY ANY ISSUES. NONE NOTED AND WAS RELEASED TO SERVICE.