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

🇺🇸 N940NN - Boeing 737NG 823/W - American Airlines AAL453/AA453, Chicago O'Hare (ORD) to Kansas City (MCI) - 3.6 mi away @ 29350 ft, heading SW at 517 mph. Spotted 49x before! [08:06:36 PM CDT] #AD0E61 #N940NN #B738 #AMERICAN #AAL453 #AA453 #ADSB #ADSBbot