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

🇺🇸 N291NN - Embraer EMB-175 LR - American Eagle ENY3853/MQ3853 (DFW-COU-DFW) - 3.7 mi away @ 27075 ft, heading SE at 540 mph. Spotted 26x before! [06:46:43 PM CST] #A2FA6A #N291NN #E75L #ENVOY #ENY3853 #MQ3853 #autopilot #ADSB #ADSBbot