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

🇺🇸 N925UY - Airbus A321 231 - American Airlines AAL2721/AA2721, Phoenix Sky Harbor (PHX) to Philadelphia (PHL) - 4.9 mi away @ 36750 ft, heading E at 540 mph. Spotted 18x before! [04:58:25 PM CDT] #ACD296 #N925UY #A321 #AMERICAN #AAL2721 #AA2721 #ADSB #ADSBbot

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

🇺🇸 N543UW - AIRBUS A321-231 - AMERICAN AIRLINES INC AAL2721/AA2721, Phoenix Sky Harbor (PHX) to Philadelphia (PHL) - 4.3 mi away @ 35025 ft, heading E at 558 mph. Spotted 19x before! [05:21:42 PM CDT] #A6E4E8 #N543UW #A321 #AAL2721 #AA2721 #ADSB #ADSBbot

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

🇺🇸 N563UW - Airbus A321 231 - American Airlines AAL2721/AA2721, Phoenix Sky Harbor (PHX) to Philadelphia (PHL) - 4.4 mi away @ 34950 ft, heading ENE at 581 mph. Spotted 12x before! [06:53:47 PM CDT] #A733E6 #N563UW #A321 #AMERICAN #AAL2721 #AA2721 #ADSB #ADSBbot