What was found
SEA - SLATS FAIL MESSAGE UPON SLAP/FLAP SELECTION ON APPROACH. FLAPS WORKED FINE, NO CHANGE AFTER PERFORMANCE OF APPLICABLE CHECKLIST. MAINTENANCE FOUND A SLAT ACTUATOR FAILED MECHANICAL JAM MESSAGE IN THE MDC. INSPECTED THE SLATS AND FLAPS FOR FOD DAMAGE. NO DAMAGE NOTED. PERFORMED FAULT ISOLATION PROCEDURES IAW CRJ-700 FIM TASK 27-81-09-810-802-A01. FAULT CLEARED. EXTENDED AND RETRACTED FLAPS SEVERAL TIMES WITH NO FAULT MESSAGES. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.