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

🇺🇸 N406AN - Airbus A321 253NXSL - American Airlines AAL2102/AA2102, Philadelphia (PHL) to Phoenix Sky Harbor (PHX) - 4.3 mi away @ 35575 ft, heading W at 453 mph. Spotted 10x before! [11:39:04 AM CDT] #A4C2F8 #N406AN #A21N #AMERICAN #AAL2102 #AA2102 #ADSB #ADSBbot