What was found
FLT 1422, LGL-PDX, SLAT FAIL ON APPROACH AFTER SELECTION FLAP 1, SLATS FAILED TO MOVE AND SHOWED A POSITIVE 0 AMBER INDICATION THROUGHOUT APPROACH LANDING. INSPECTED SLATS FLAPS IAW AMM 27-81-01. NO DISCREPANCIES NOTED. RESET SYSTEM OPS CHECK GOOD AT THIS TIME. COMPLIED WITH RETURN TO SERVICE CHECK IAW 27-00-00. ALL FAULTS CLEARED, OK FOR SERVICE.