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

🇺🇸 N176UW - Airbus A321 211 - American Airlines AAL2584/AA2584, Philadelphia (PHL) to Phoenix Sky Harbor (PHX) - 3.5 mi away @ 28975 ft, heading W at 471 mph. Spotted 21x before. [07:48:13 PM CST] #A1314E #N176UW #A321 #AMERICAN #AAL2584 #AA2584 #ADSB #ADSBbot