As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT HF RADIO RECEPTION INOPERATIVE AT ALL CREW STATIONS. COULD NOT DUPLICATE ON GROUND IAW MM 23-11-00. SWAPPED HF TRANCEIVER LT SN: 01412 WITH R/T TRANCEIVER SN: 01427 FOR FURTHER T/S. CONTACTED SFO AT FREQ. 5574. TRANS. 4 X 4. OK FOR SERVICE. (K)