As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) INTERMITTENT INDICATION OF POSITION AND FLIGHT DATA. TROUBLESHOOTING INDICATED GPS ANTENNA SYSTEM, FOUND SECTION OF GPS ANTENNA CABLE SHORTED TO CABLE SHIELD AT TRANSCEIVER BOX, CONNECTOR. SUSPECT GPS ANTENNA CABLE CONNECTOR TERMINAL IS INTERNALLY SHORTED.