As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS - A/C WENT OUT ON A TEST FLIGHT AFTER COMPLETING A C-CHECK INSPECTION. THE CREW GOT A LDG AIR/GND FAIL MESSAGE ON THE EICAS AND RETURN BACK TO THE HANGAR WHERE MAINTENANCE FOUND RT MLG TRAILING ARM WOW SWITCH OUT OF LIMITS. RE-ADJUSTED THE SWITCH IAW EMB 145XR AMM 32-63-05-804-A AND PERFORMED A PROX SWITCH FUNCTIONAL CHECK IAW EMB 145 XR AMM 32-63-05-700-802-A. OPS CHECK GOOD AND WAS RELEASED TO TEST FLIGHT AGAIN.