🇺🇸 N508AS - Boeing 737NG 890/W - Alaska Airlines ASA1318/AS1318, St Louis Lambert (STL) to Portland (PDX) - 4.0 mi away @ 14000 ft, heading NW at 424 mph. Spotted 5x before. [06:21:02 PM CDT] #A657B9 #N508AS #B738 #ALASKA #ASA1318 #AS1318 #TakingOff #Departure #ADSB #ADSBbot