🇺🇸 N403AS - Boeing 737NG 990ER/W - Alaska Airlines ASA674/AS674, St Louis Lambert (STL) to Seattle-Tacoma (SEA) - 3.9 mi away @ 14275 ft, heading NW at 404 mph. Spotted 11x before. [08:19:47 PM CDT] #A4B7D7 #N403AS #B739 #ALASKA #ASA674 #AS674 #TakingOff #Departure #ADSB #ADSBbot