What was found
DURING CLIMB, FLAPS UP LEADING EDGE LIGHT INTERMITTENTLY ON. DURING FLAP EXTENSION, NR 2 L/E FLAP DID NOT LOCK UP. YELLOW AND GREEN L/E FLAP LIGHTS ON FORWARD PANEL WERE ALTERNATING. CHRISTMAS TREE INDICATED INTERMITTENT YELLOW LIGHT FOR NR 2 L/E FLAP. AT FLAPS 5 DEGREES, ALL GREEN INDICATION. INSPECTED FLAPS. NO DEFECT NOTED. REMOVED AND REPLACED FLAP INDICATING SWITCH. OPS CHECK OK. REF 27-82-1.