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

🇺🇸 N310JZ - Embraer EMB-175 LR - American Eagle ENY3416/MQ3416 (BOS-STL-BOS) - 3.5 mi away @ 3300 ft, heading NNE at 255 mph. Spotted 21x before! [01:44:29 PM CDT] #A347B1 #N310JZ #E75L #ENVOY #ENY3416 #MQ3416 #autopilot #Landing #ADSB #ADSBbot