As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2485 - ORF - FLIGHT CREW REPORTED LOUD SQUALL COMING FROM BOTH COMMS/HEADSETS AND THEY WERE UNABLE TO COMMUNICATE TO EACH OTHER. CREW PERFORMED AIR RETURN AND LANDED ACFT UNEVENTFULLY. MX FOUND LOOSE SCREW ON NR 1 VHF ANTENNA. MX TIGHTEN SCREWS AND FLIGHT CREW PERFORMED COMM OPERATIONAL CHECK AND ALSO A FLIGHT TEST SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.