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

🇺🇸 N789SS - Embraer EMB-170 SE - American Eagle ENY3539/MQ3539, Columbia Regional (COU) to Chicago O'Hare (ORD) - 3.4 mi away @ 27950 ft, heading E at 507 mph. Spotted 14x before! [01:32:33 PM CDT] #AAB396 #N789SS #E170 #ENVOY #ENY3539 #MQ3539 #autopilot #ADSB #ADSBbot