As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"FAIL" IS DISPLAYED ON ACTIVE AND STANDBY WINDOWS OF HF1 RADIO. CONFIRMED FAULT HF1 "FAIL" MESSAGE IN ACTIVE AND STANDBY ON BOTH CAPT'S AND F/O'S RADIO FREQ WINDOWS. PERFORMED BITE TEST ON HF1 TRANCEIVER. NO FAULTS FOUND. NO HISTORY LAST 30 DAYS. "FAIL" MESSAGE CLEARED. INTERMITTENT FAULT REF FIM TASK 23 11 00 810 801.