As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 HF RADIO SHOWS FAIL/FAIL WHEN SELECTED, WHEN THE FREQ. TRANSFER SWITCH IS PUSHED, THE RADIOS WORK NORMALLY, BUT THEN SHOW FAIL. GROUNDED - YES. ACCOMPLISHED FIM TASK 23-11 TASK 801 BITE TEST PASS. PRECAUTIONARY CHANGED HF TRANSCEIVER NR 2 LRU REF AMM 23-11-21-400-801. BITE TEST GOOD. GROUND VERIFICATION SUCCESSFUL.