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

🇺🇸 N331SC - EMBRAER S A ERJ 170-200 LR - AMERICAN AIRLINES INC ENY3724/MQ3724, Kansas City (MCI) to Ronald Reagan Washington Ntl (DCA) - 4.1 mi away @ 33250 ft, heading E at 620 mph. Spotted 8x before. [06:44:38 AM CST] #A39B19 #N331SC #E170 #ENY3724 #MQ3724 #autopilot #ADSB #ADSBbot