What was found
(CAN) SLATS FAILED IN THE FULL POSITION. GO-AROUND INITIATED DUE UNSTABLE APPROACH. FLIGHT DECLARED EMERGENCY. SLAT FAIL CAUTION ON SHORT FINAL, SLAT FULL/FLAP 5 WHEN CAUTION, SLAT FULL/FLAP 2 FINAL LANDING CONFIG, DUE NO FLAP THREE AVAIL ON FINAL. REPLACED DEFECTIVE SLAT/SKEW SENSOR BETWEEN SLATS 3 AND 4 ON RT OTBD WING IAW AMM 27-83-01, PB 401. OPS TEST SERVICABLE. SLATS/FLAPS CYCLED SEVERAL TIMES WITH NO FAULTS.