As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE TAKEOFF ROLL PRIOR TO REACHING V1, THE CREW WAS ALERTED BY THE CAS SYSTEM THAT THEY HAD ENCOUNTERED AN INVERTER BUS FAIL. THIS WAS ACCOMPANIED BY AN AMBER MESSAGE ON THE EICAS SCREEN. THE FLIGHT CREW ABORTED THE TAKEOFF AND RETURNED TO GATE. MTN AIR EXPRESS MX PERSONNEL INSPECTED THE AIRCRAFT IN ADDITION TO CONDUCTING A SYSTEM FUNCTIONAL CHECK IAW AMM 24-22-00, UNABLE TO DUPLICATE THE PROBLEM.