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

🇲🇽 XA-AMD - BOEING 737 MAX 8 - Aerovias De Mexico AMX687/AM687, Chicago O'Hare (ORD) to Licenciado Benito Juarez (MEX) - 4.0 mi away @ 34475 ft, heading SSW at 554 mph. Spotted for first time! [04:20:58 PM CST] #0D1139 #XA_AMD #B38M #AEROMEXICO #AMX687 #AM687 #ADSB #ADSBbot