What was found
SLAT FAIL CAUTION AND SLAT ACT SYSTEM FAILED MECHANICAL JAM MESSAGE. RESET SLAT ACTUATOR, TRIP INDICATORS; LEFT SIDE WS48.00, WS327.00, WS423.00 AND RIGHT SIDE WS48.00, WS327.00, WS353.00, WS423.00 IAW CRJ AMM 27-81-09. OPERATIONAL CHECK GOOD, RETURNED AIRCRAFT TO SERVICE.