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

🇺🇸 N47569 - Boeing 737MAX 9 - United Airlines UAL2174/UA2174, St Louis Lambert (STL) to San Francisco (SFO) - 3.4 mi away @ 12300 ft, heading WNW at 386 mph. Spotted 6x before! [07:42:42 AM CDT] #A5D6F9 #N47569 #B39M #UNITED #UAL2174 #UA2174 #Landing #Departure #ADSB #ADSBbot