As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: UNABLE TO TRANSMIT ON HF2 AND ATTEMPTING TO TRANSMIT ON HF1 AND ARINC HAD DIFFICULTY HEARING US. BOTH HF RADIOS NEED TO BE CHECKED.***SUPPLEMENTAL ACTION SECT. 4 AND 5: REMOVED AND REPLACED HF#1 AND HF#2 ANTENNA. COUPLERS IAW AMM 23-11-61.ALSO SEE AALA202001249006***(CLOSED)