🇺🇸 N958BX - Gulfstream Aerospace GIV SP - Starjet Inc N958BX, Van Nuys (VNY) to Washington Manassas/Harry P Davis Field (MNZ) - 5.1 mi away @ 42450 ft, heading E at 549 mph. Spotted for first time! [12:58:34 PM CDT] #AD528E #N958BX #GLF4 #N958BX #ADSB #ADSBbot