As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT WE LOST ALL COMMUNICATIONS, APPEARED TO BE STUCK MIC ON CAPTAINS SIDE. WHEN WE SWITCHED RADIOS IT FOLLOWED TO NEXT RADIO. WE FINALLY WERE ABLE TO COMMUNICATE ON EMERGENCY. TIGHTENED LOOSE HAND MIC JACKS IN YOKE. REPOSTIONED COPILOTS BOOM MIC JACK TO ALLOW PLUG TO FULLY SEAT INTO JACK. OPERATIONALLY CHECKED ALL COMMUNICATIONS FUNCTIONS. ALL CHECKS OK AMM CH 23-11-05-501.