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

🇺🇸 N811NN - Boeing 737NG 823/W - American Airlines AAL3271/AA3271, Chicago O'Hare (ORD) to Austin-Bergstrom (AUS) - 4.3 mi away @ 36425 ft, heading SW at 496 mph. Spotted 31x before! [10:46:48 AM CST] #AB0E4C #N811NN #B738 #AMERICAN #AAL3271 #AA3271 #ADSB #ADSBbot