🇺🇸 N17431 - BOEING 737 MAX 9 - UMB BANK NA TRUSTEE UAL2793/UA2793 (SAN-DEN-BWI) - 5.2 mi away @ 37050 ft, heading E at 545 mph. Spotted 3x before. [08:06:44 PM CDT] #A12AE4 #N17431 #B39M #UAL2793 #UA2793 #ADSB #ADSBbot