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

🇺🇸 N273NN - Embraer EMB-175 LR - American Eagle ENY4318/MQ4318 (DFW-CID-DFW) - 3.8 mi away @ 30975 ft, heading SSW at 495 mph. Spotted 30x before! [06:19:23 PM CDT] #A2B2DA #N273NN #E75L #ENVOY #ENY4318 #MQ4318 #autopilot #ADSB #ADSBbot