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

🇺🇸 N539UW - Airbus A321 231 - American Airlines AAL372/AA372, Louisville Muhammad Ali (SDF) to Dallas-Fort Worth (DFW) - 4.4 mi away @ 32200 ft, heading W at 486 mph. Spotted 18x before! [04:19:01 PM CST] #A6D3B3 #N539UW #A321 #AMERICAN #AAL372 #AA372 #ADSB #ADSBbot