As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH FO'S FLIGHT DIRECTOR LATERAL DEVIATION BAR DISAPPEARED AFTER LOC CAPTURE, THEN AFTER G/S CAPTURE LOST VERTICAL FLIGHT DIRECTOR BAR AS WELL AND A/P DISENGAGED. HAD BOTH A/P'S ENGAGED FOR CIII/AUTOLAND APPROACH AT THE TIME. GROUNDED - YES. FOUND FAULT 'R F/D COMP' MSG 22-11486 ON 2/18/23 IN DFCS BITE. PER B737-900 FIM 22-14 TASK 801 AND B737-900 AMM 22-00-01, FOUND TO BE INTERMITTENT FAULT.