As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 HF SHOWS FAILED, ACFT GROUNDED. VERIFIED THE NR 1 HF SHOWS FAILED ON BOTH RTP'S. PERFORMED A BITE OF THE NR 1 HF TRANSCIEVER, FOUND NORMAL IAW FIM 23-11, TASK 801. FLT CREW SUCCESSFULLY COMPLETED HF COMMUNICATION SYSTEM TEST. BOTH AUDIO AND SELCAL WERE GOOD. NO PREVIOUS HISTORY LAST 30 DAYS. CHECKED GOOD FOR SERVICE.