🇺🇸 N439GT - Boeing 747 409F - Atlas Air GTI8997/5Y8997, Miami (MIA) to Ted Stevens Anchorage (ANC) - 5.3 mi away @ 42075 ft, heading NNW at 502 mph. Spotted for first time! [06:01:48 AM CDT] #A54535 #N439GT #B744 #GIANT #GTI8997 #5Y8997 #ADSB #ADSBbot