As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FLT -FCU 1 FAULT- DISPLAYED ON UPPER ECAM SCREEN. CREW COMMENTS, WITH SMOKE FROM FCU. [SUP 05-08-07] REPLACED FCU AFTER VERIFYING THAT FCU WAS FAULTY AND WAS SOURCE OF SMOKE. FURTHER FAULT TRACING DETERMINED THAT THE PSU WAS DEFECTIVE.