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

🇺🇸 N24715 - Boeing 737NG 724/W - United Airlines UAL8150/UA8150, Newark Liberty (EWR) to Dane County Regional/Truax Field (MSN) - 4.8 mi away @ 39875 ft, heading SW at 544 mph. Spotted 22x before! [11:23:31 AM CDT] #A24C99 #N24715 #B737 #UNITED #UAL8150 #UA8150 #ADSB #ADSBbot