As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 HF RADIO "FAIL". GROUNDED - YES. REF B737-800 FIM 23-11 TASK 801, NO FAULTS FOUND ON HF TRANSCEIVER BIITE TEST. REF B737-800 FIM 23-11 TASK 806, INITIAL EVALUATION TESTS NORMALLY, NO FAULTS NOTED. TRANSMIT AND RECEIVE COMMUNICATION WITH RADIO TOWER. NO HISTORY WITHIN 30 DAYS. GROUND VERIFICATION PASS.