As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT AMBER "FD" ANNUNCIATION ON FO DISPLAY. ACFT GROUNDED. "FD" FLAG APPEARED AFTER GROUND POWER DROPPED OFFLINE. CYCLED POWER & "FD" FLAG EXTINGUISHED. PERFORMED CURRENT STATUS TEST FOR "B" A/P & AUTO TEST PASSED. FLIGHT DIRECTOR LIBRARY TEST PASSED REF FIM 22-11, TASK 801.