Map of the St. Louis area showing the position and track of the aircraft described in the post.
πΊπΈ N78448 - Boeing 737NG 924ER/W - United Airlines UAL277/UA277, Chicago O'Hare (ORD) to Austin-Bergstrom (AUS) - 4.6 mi away @ 35950 ft, heading SW at 508 mph. Spotted 12x before! [10:33:00 AM CDT] #AAA267 #N78448 #B739 #UNITED #UAL277 #UA277 #ADSB #ADSBbot