🇺🇸 N57870 - Boeing 757 33N/W - United Airlines UAL796/UA796, Washington Dulles (IAD) to San Francisco (SFO) - 6.2 mi away @ 33650 ft, heading W at 524 mph. Spotted 3x before. [05:08:32 PM CDT] #A76F87 #N57870 #B753 #UNITED #UAL796 #UA796 #ADSB #ADSBbot