What was found
FLT - 1843 - PHL-FWA - ON APPROACH TO FWA, THE FLIGHT CREW NOTICED THAT THE NR 8 SLAT DID NOT INDICATE EXTENDED WHEN THE FLAP HANDLE WAS MOVED FROM 2 DEGREES TO THE 5 DEGREE POSITION. AN EMERGENCY WAS DECLARED AND A UNEVENTFUL LANDING WAS MADE AT FWA. REMOVED AND REPLACED THE NR 8 SLAT ACTUATOR AND NR 8 SLAT POSITION SWITCH. THE SYSTEM OPERATIONALLY CHECKED GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)