What was found
EN ROUTE FROM OKC TO STL, FLIGHT 717, ON APPROACH TO STL WHEN FLAPS WERE SET TO 2 DEGREES, POSITION PANEL SHOWED AMBER LEADING EDGE SLAT NR 2 INDICATION. USED 'ONE LEADING EDGE DEVICE INOP' EMERGENCY CHECKLIST. AIRCRAFT MADE AN UNEVENTFUL LANDING IN STL. A VISUAL CHECK INDICATES NR 2 SLAT WAS WORKING PROPERLY. FOUND CANNON PLUG ON NR 2 SLAT ACTUATOR LOOSE. CLEANED AND SECURED CANNON PLUG. OPERATIONALLY TESTED GOOD ON GROUND. AIRCRAFT RETURNED TO SERVICE. (M)