As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - LEFT HF RADIO INOP, FAILED TWO HOURS INTO FLIGHT, WILL NOT SEND OR RECEIVE. PER BFIM 23-11-00 FIG 103 REPLACED LEFT HF COUPLER ASSY IAW AMM 23-11-01-024-001. NOW OPS CHECKS GOOD CONTACTING SFO ARINC PER AMM 23-11-01-424-008.