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

🇺🇸 N1805U - Boeing 737MAX 8 - Southwest Airlines SWA2517/WN2517, Baltimore/Washington Thurgood Marshall (BWI) to Los Angeles (LAX) - 4.7 mi away @ 37800 ft, heading W at 501 mph. Spotted 70x before! [09:31:22 PM CDT] #A143C6 #N1805U #B38M #SOUTHWEST #SWA2517 #WN2517 #ADSB #ADSBbot