What was found
WITH HF1 SELECTED ON AUDIO PANEL "FAIL" ILLUMINATED. ACFT GROUNDED. COMPLIED WITH HF OPS CHECK IAW AMM 23-11-00-710-801. CHECKED GOOD, GROUND VERIFICATION CHECKED GOOD, NO FURTHER FAULTS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WITH HF1 SELECTED ON AUDIO PANEL "FAIL" ILLUMINATED. ACFT GROUNDED. COMPLIED WITH HF OPS CHECK IAW AMM 23-11-00-710-801. CHECKED GOOD, GROUND VERIFICATION CHECKED GOOD, NO FURTHER FAULTS.