As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS HF #2 INDICATES FAIL W/ A SELECTION OF DIFFERENT FREQ BRIEFLY RESTORING, THEN BACK TO FAIL. GROUNDED - YES. CONFIRMED, CYCLED POWER TO HF #2. NORMAL OPERATION RESTORED. CONFIRMED CORRECT RECEPTION AUDIO AND TUNING TONE HEARD. ETOPS GROUND VERIFICATION SUCCESSFUL.