Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N874AS - Bombardier CRJ 200ER - Contour Aviation VUE3539 - 3.9 mi away @ 24775 ft, heading SW at 520 mph. Spotted 28x before! [04:07:52 PM CDT] #AC0543 #N874AS #CRJ2 #VOLUNTEER #VUE3539 #ADSB #ADSBbot