As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF1 FREQUENCY CHANGES TO 5754 ON ITS OWN. HFI OTHERWISE PERFORMS NORMALLY. GROUNDED - YES. CYCLED C/B'S FOR NUMBER 1 AND 2 HF PER AMM 20-60-05 BOTH HF SYSTEM STOPS. GROUND VERIFICATION SUCCESSFUL PER FIM 23-11 TASK 801. NO HISTORY OF THIS PROBLEM LAST 90 DAYS.