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

🇲🇽 XA-EEE - Swearingen Metro III - Aeronaves TSM VTM503, Laredo (LRD) to Central Il Regional/Bloomington-Normal (BMI) - 3.5 mi away @ 21375 ft, heading NE at 306 mph. Spotted for first time! [07:29:23 AM CST] #0D0CD0 #XA_EEE #SW4 #AERONAVES_TSM #VTM503 #ADSB #ADSBbot