What was found
SLATS FAIL CAUTION MSG. SLATS FAILED TO EXTEND WHEN SELECTED TO FLAPS 1. LT SLATS WENT TO 1 & RT SLATS STAYED AT 0. REF LOG PAGE 3689371 FOR CORRECTIVE ACTION. LT 3-1, 1-1,1-3 & 3-3 & RT 3-1, 3-3 SLAT ACTUATORS WERE REPLACED IAW 27-81-09. OPERATIONS CHECKED GOOD. LT SLAT ACTUATORS 1-1, 1-3, 3-1 & 3-3 & RT 3-1,3-3 R & R IAW NRWC 525-FW-01494, 01497, 01499 01504, 01505, 01506, 01507 IAW AMM 27-81-09. OPERATIONS CHECKED GOOD.