🇺🇸 N14518 - Airbus A321 271NXSL - United Airlines UAL1587/UA1587, Washington Dulles (IAD) to Denver (DEN) - 4.3 mi away @ 33825 ft, heading W at 529 mph. Spotted 5x before. [01:21:49 PM CDT] #A0B7DF #N14518 #A21N #UNITED #UAL1587 #UA1587 #ADSB #ADSBbot