As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 HF RADIO WILL NOT TUNE AND APPEARS TO NOT RECEIVE. MULTIPLE HF FREQ'S TRIED. AF SENS SET AT 100 PERCENT. ACFT GROUNDED. REPLACED NR 2 HF TRANSCEIVER IAW AMM 23-11-21-000-801. GROUND VERIFICATION CHECK GOOD IAW AMM 23-11-21-400-801.