As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HF-1 DISPLAYS FAIL MESSAGE. CIRCUIT BREAKER NOT TRIPPED. ACFT GROUNDED. FAIL MESSAGE DISPLAYS IN CAPT AND F/OS RTP WHEN HF-1 IS SELECTED. PERFORMED HF-1 BITE IAW FIM 23-11, TK 801. BITE TEST OF HF-1 PASSED AND FAIL MESSAGE WENT AWAY. OK TO CONTINUE.