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

🇺🇸 N37536 - Boeing 737MAX 9 - United Airlines UAL684/UA684, Washington Dulles (IAD) to Los Angeles (LAX) - 4.1 mi away @ 34825 ft, heading W at 441 mph. Spotted 11x before. [04:06:50 PM CDT] #A4493E #N37536 #B39M #UNITED #UAL684 #UA684 #ADSB #ADSBbot