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

🇲🇽 XA-SRB - AMX9488/AM9488 - 4.4 mi away @ 37850 ft, heading SSW at 481 mph. Spotted once before! [12:02:21 PM CDT] #0D0FF7 #XA_SRB #B39M #AMX9488 #AM9488 #ADSB #ADSBbot