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

🇺🇸 N131NN - Airbus A321 231SL - American Airlines AAL529/AA529, Chicago O'Hare (ORD) to Los Angeles (LAX) - 4.0 mi away @ 30725 ft, heading SW at 536 mph. Spotted 13x before! [04:00:51 PM CDT] #A08021 #N131NN #A321 #AMERICAN #AAL529 #AA529 #ADSB #ADSBbot