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

🇺🇸 N235NN - Embraer EMB-175 LR - American Eagle ENY3872/MQ3872, El Paso (ELP) to Chicago O'Hare (ORD) - 5.5 mi away @ 34875 ft, heading NE at 550 mph. Spotted 21x before! [09:14:19 AM CDT] #A21C4C #N235NN #E75L #ENVOY #ENY3872 #MQ3872 #autopilot #ADSB #ADSBbot