What was found
HNL - INFLIGHT T270/12 ON INITIAL CLIMBOUT BEFORE FLAP HANDLE MOVED LEADING EDGE FLAP ASYMMETRY LIGHT CAME ON. RETURNED TO HNL AND LANDED WITHOUT INCIDENT. DUPLICATED FAULT WITH SLATS. FOUND FAULT ASSOCIATED WITH NUMBER SIX SLAT SENSOR. REPLACED SENSOR SWITCH FOR NUMBER 6 INBOARD SLAT LEFT WING SENSOR NUMBER 281. REPLACED PROXIMITY SWITCH ELECTRONICS UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION.