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

🇺🇸 N216NN - Embraer EMB-175 LR - American Eagle ENY3374/MQ3374 (ORD-IAH-ORD) - 4.3 mi away @ 35675 ft, heading NNE at 572 mph. Spotted 40x before! [02:36:23 PM CST] #A1D105 #N216NN #E75L #ENVOY #ENY3374 #MQ3374 #autopilot #ADSB #ADSBbot