As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT DIRECTOR FAILED JUST AFTER TAKEOFF, UPON REACHING 400FT AGL THE YAW DAMPER WAS ENGAGED AND THE RED FD CAME ON. THE TEST SWITCH WAS CHECKED AND THE FD CAME BACK ON FOR A SHORT PERIOD OF TIME THEN FAILED AGAIN. THE FLIGHT WAS RETURNED BACK TO THE AIRPORT.