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

🇺🇸 N179UW - Airbus A321 211 - American Airlines AAL2154/AA2154, Ronald Reagan Washington Ntl (DCA) to Phoenix Sky Harbor (PHX) - 3.3 mi away @ 6400 ft, heading SW at 326 mph. Spotted 12x before. [07:56:02 PM CDT] #A13C73 #N179UW #A321 #AMERICAN #AAL2154 #AA2154 #TakingOff #ADSB #ADSBbot