As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED TO KMRY DUE TO AN ELECTRICAL BURNING SMELL IN THE CABIN. DURING CRUISE, THE PIC NOTED A RED X APPEAR OVER COM2 WHICH THEN EXTINGUISHED AND REAPPEARED MULTIPLE TIMES SHORTLY THEREAFTER. THE CREW OBSERVED SMOKE EMANATING FROM THE GLARESHIELD PROMPTING THEM TO DON THEIR OXYGEN MASKS. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED GIA 2 IAW EMB 505 AMM 31-41-05. ALL FOLLOW-ON CHECKS PASSED.