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

🇮🇪 EI-GZB - Boeing 737MAX 8 - AeroMexico AMX683/AM683, Chicago O'Hare (ORD) to Licenciado Benito Juarez (MEX) - 3.8 mi away @ 31700 ft, heading SSW at 530 mph. Spotted 5x before! [08:09:49 AM CDT] #4CACF4 #EI_GZB #B38M #AMX683 #AM683 #ADSB #ADSBbot