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

🇺🇸 N75428 - Boeing 737NG 924ER/W - United Airlines UAL741/UA741, Denver (DEN) to Washington Dulles (IAD) - 3.8 mi away @ 32500 ft, heading E at 592 mph. Spotted 11x before! [04:20:20 PM CDT] #AA2BA4 #N75428 #B739 #UNITED #UAL741 #UA741 #ADSB #ADSBbot