As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE, EN-ROUTE, LOST (A) BUS IN FLIGHT. LOST ALL RADIOS BOTH COMMS AND BOTH NAVS. OVERWEIGHT LANDING. RESET ALL MAIN FEEDER C/BS OPS. CHECKED GOOD ON GROUND RUN-UP. REMOVED MAIN AC BATTERY AND REPAIRED BATTERY CONNECTOR, OPS CHECKED GOOD COMPLIED WITH ONE -119C, NO DEFECTS NOTED.