🇺🇸 N37538 - Boeing 737MAX 9 - United Airlines UAL2223/UA2223, Tampa (TPA) to Chicago O'Hare (ORD) - 4.8 mi away @ 36900 ft, heading NNE at 535 mph. Spotted 9x before. [03:23:07 PM CDT] #A44940 #N37538 #B39M #UNITED #UAL2223 #UA2223 #ADSB #ADSBbot