What was found
FLT 484 - EN ROUTE TO PIT, SMOKE DETECTION WARNING SYSTEM CAME ON FOR SEVERAL SECONDS THEN WENT OFF, NO SMOKE OR FUMES WERE NOTED. AIRCRAFT MADE AN UNEVENTFUL LANDING. INSPECTION OF THE SMOKE DETECTOR SENSORS REVEALED THAT A LARGE GROUP OF INSECTS HAD MADE A NEST INSIDE THE UNIT CAUSING AND INTERMITTENT PROBLEM. THE INSECTS WERE REMOVED, THE SMOKE DETECTION SYSTEM OPERATIONAL CHECKED AND FOUND TO BE IN GOOD WORKING CONDITION. AIRCRAFT RETURNED TO SERVICE. (M)