🇺🇸 N37473 - BOEING 737 MAX 9 - WILMINGTON TRUST COMPANY TRUSTEE UAL2192/UA2192, Baltimore/Washington Thurgood Marshall (BWI) to San Francisco (SFO) - 4.9 mi away @ 35800 ft, heading W at 508 mph. Spotted once before. [08:47:37 AM CDT] #A44610 #N37473 #B39M #UAL2192 #UA2192 #ADSB #ADSBbot