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

🇺🇸 N479AM - Boeing 737MAX 8 - AeroMexico AMX687/AM687, Chicago O'Hare (ORD) to Licenciado Benito Juarez (MEX) - 4.3 mi away @ 35450 ft, heading SSW at 546 mph. Spotted for first time! [03:53:15 PM CST] #A5E295 #N479AM #B38M #AMX687 #AM687 #ADSB #ADSBbot