As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 HF WILL NOT TRANSMIT. EARLIER SELCAL CHECK WAS SUCCESSFUL. ACFT GROUNDED. PERFORMED FIM 23-11 TASK 801, NO FAULTS FOUND. REPLACED THE NR 2 HF TRANSCIEVER IAW AMM 23-11-21-000-801, AND 23-11-21-400-801. OPS CHECKED GOOD. PERFORMED TEST OF HF COMM SYS IAW AMM 23-11-000-730-801. GROUND VERIFICATION CHECKED GOOD.