As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF#2 DISPLAYS FAIL/FAIL WHEN SELECTED ON BOTH CA AND FO COMM PANELS. GROUNDED - YES. UPON AIRCRAFT POWER UP, HF 1&2 SHOW NO FAIL/FAIL ON RTPS' WHEN SELECTED REF FIM'S 23-12 TASK 812, AND 23-11 TASK 811. HF 2 TRANSMIT/RECEIVE ESTABLISHED, LRU BITE TESTS GOOD. GROUND VERIFICATION TESTS GOOD.