As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 HF SHOWS FAIL IN ACTIVE AND STANDBY WINDOW, WHEN IN DATA MODE AND COMM MODE. CALLED AND HAD A POSITIVE CHECK AND COMM CHECK OK. ACFT GROUNDED. TROUBLESHOT IAW FIM 23-11 TASK 802. INITIAL EVALUATION AND BITE CHECK SHOWED NO CURRENT FAULTS, NO FAULTS DISPLAYED ON WINDOWS. ACCOMPLISHED AN OPS CHECK OF THE NR 2 HF IAW AMM 23-11-00. OPS CHECKED OK.