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

🇺🇸 N757YX - Embraer EMB-175 LR - United Express RPA3505/YX3505, Dallas-Fort Worth (DFW) to Newark Liberty (EWR) - 4.5 mi away @ 34925 ft, heading ENE at 563 mph. Spotted once before! [08:10:28 PM CDT] #AA3646 #N757YX #E75L #BRICKYARD #RPA3505 #YX3505 #autopilot #ADSB #ADSBbot