As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 HF FAIL ILLUMINATED IN BOTH FREQUENCY WINDOWS. ACFT GROUNDED. FOUND FAIL MESSAGE CAPTAINS RADIO TUNING PANEL. PERFORMED FIM 23-12 TASK 815. RESET POWER ON RADIO TUNING PANEL AND HF SYSTEM FAULT CLEARED. PERFORMED GROUND VERIFICATION CHECK, GROUND VERIFICATION CHECKED GOOD.