🇺🇸 N877SB - Gulfstream Aerospace G550 - Biglari Enterprises LLC N877SB, Washington Dulles (IAD) to Van Nuys (VNY) - 6.1 mi away @ 47200 ft, heading W at 498 mph. Spotted 5x before. [05:09:48 PM CDT] #AC11E9 #N877SB #GLF5 #N877SB #autopilot #ADSB #ADSBbot