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

🇺🇸 N923US - Airbus A321 231 - American Airlines AAL573/AA573, Denver (DEN) to Charlotte/Douglas (CLT) - 4.2 mi away @ 34400 ft, heading E at 596 mph. Spotted 6x before! [09:35:31 AM CDT] #ACCB22 #N923US #A321 #AMERICAN #AAL573 #AA573 #ADSB #ADSBbot