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

🇺🇸 N543UW - Airbus A321 231 - American Airlines AAL1316/AA1316, Dallas-Fort Worth (DFW) to Philadelphia (PHL) - 22.0 mi away @ 32775 ft, heading ENE at 621 mph. Spotted 20x before! [12:58:20 PM CST] #A6E4E8 #N543UW #A321 #AMERICAN #AAL1316 #AA1316 #ADSB #ADSBbot