Map of the St. Louis area showing the position and track of the aircraft described in the post.
πΊπΈ N37523 - Boeing 737MAX 9 - United Airlines UAL8255/UA8255 (FLL-ORD-SEA) - 4.5 mi away @ 36975 ft, heading SW at 447 mph. Spotted 4x before. [09:03:00 PM CST] #A44918 #N37523 #B39M #UNITED #UAL8255 #UA8255 #ADSB #ADSBbot