🇺🇸 N917AK - Boeing 737MAX 9 - Alaska Airlines ASA473/AS473, St Louis Lambert (STL) to Seattle-Tacoma (SEA) - 3.7 mi away @ 12525 ft, heading WNW at 387 mph. Spotted 9x before. [06:42:56 AM CDT] #ACB0B6 #N917AK #B39M #ALASKA #ASA473 #AS473 #Landing #Departure #ADSB #ADSBbot