🇺🇸 N24211 - Boeing 737NG 824/W - United Airlines UAL1548/UA1548, St Louis Lambert (STL) to Denver (DEN) - 5.0 mi away @ 9875 ft, heading SW at 313 mph. Spotted 16x before. [08:02:29 PM CDT] #A23A02 #N24211 #B738 #UNITED #UAL1548 #UA1548 #TakingOff #Departure #ADSB #ADSBbot