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

🇺🇸 N872NN - Boeing 737NG 823/W - American Airlines AAL1159/AA1159, Miami (MIA) to Chicago O'Hare (ORD) - 4.4 mi away @ 36850 ft, heading NNE at 528 mph. Spotted 43x before! [05:09:51 PM CDT] #ABFEFD #N872NN #B738 #AMERICAN #AAL1159 #AA1159 #ADSB #ADSBbot