As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3249 AIR TRAFFIC CONTROL DECLARED AN EMERGENCY ON BEHALF OF THE CREW DUE TO THEY WERE UNABLE TO TUNE COM 1 OR COM 2 THRU RMU OR TBCH OR UNILINK. TALKED TO ATC ON COM 3. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. CYCLED A/C POWER. COMM #1 AND COMM #2 OPC GOOD IAW AMM 23-12-00. PUT UNILINK BACK IN "DATA" MODE, IT OPC GOOD IAW AMM 23-22-00. THE AIRCRAFT WAS RETURNED TO SERVICE.