As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF1. BOTH HF1 AND HF2 RECEIVE NORMALLY, BUT COULD ONLY TRANSMIT ON HF2. ADDITIONALLY, COULD ONLY RECIEVE SELCAL CHECK ON HF2. CPDLC LOGON AND COMMUNICATIONS SUCCESSFUL AND SATCOM FUNCTIONS NORMALLY. GROUNDED - YES. PERFORMED HF1 BITE PER FIM 23-11-801. FOUND FAULT "KEY INTERLOCK" REPLACED #1 HF TRANSCEIVER PER AMM 23-11-61-000/400. GROND VERIFICATION GOOD. REPLACED #1 HF COUPLER PER AMM 23-11-61-000/400-801. GROUND VERIFICATION GOOD. THIS CLEARS MEL 23-11-01B. SEAMC MITCH NOTIFIIED.