As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT LEVEL OFF (FL 350) LEFT SIDE FLIGHT DIRECTOR BECAME INOP AND WOULD NOT RE-ENGAGE. GROUNDED - YES. DUE TO MULTIPLE WRITE-UPS, POWERED A/C DOWN. AFTER RESTART ACCOMPLISHED DFCS BITE REF FIM 22-11 TASK 801. FOR F/D. TEST PASSED. NO CURRENT FAULTS. NO HISTORY FOR PAST 90 DAYS. OK FOR SERVICE.