As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF 2 RADIO FAIL MESSAGE APPEARS IN FREQ DISP WINDOW ABOUT 30 SEC AFTER TUNING A NEW FREQ. GROUNDED - YES. RAN HF BITE TEST PER FIM 23-11 TASK 801, NO FAULTS RECORDED, HF 2 OPS NML AFTER FIM TASK BITE. ETOPS SIGNIFICANT SYSTEM, GROUND VERIFICATION SUCCESSFUL.