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

🇺🇸 N8771D - Boeing 737MAX 8 - Southwest Airlines SWA8854/WN8854, Tampa (TPA) to St Louis Lambert (STL) - 3.5 mi away @ 3625 ft, heading NE at 243 mph. Spotted 51x before! [09:12:12 PM CST] #AC12D6 #N8771D #B38M #SOUTHWEST #SWA8854 #WN8854 #Landing #Arrival #ADSB #ADSBbot