What was found
AFTER DEPARTURE, THE FLIGHT CREW ENCOUNTERED A SLAT FAILURE AT 1000 FT AGL. THE SNAG WAS NOT RESOLVED, THEREFORE THE ACFT RETURNED TO POINT OF DEPARTURE. T/S IAW FIM 27-81-00-810-805-A, STEP 1, SF-ACE CLEAR INHIBITS PROCEDURE CARRIED OUT. RESET SUCCESSFUL. (TRANSITORY CONDITION OF SLAT/FLAP ACTUATOR CONTROL ELECTRONIC UNIT 1 AND 2), CONSIDER SERVICEABLE.