Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N809AK - BOEING 737 MAX 8 - ALASKA AIRLINES INC ASA522/AS522 (SEA-BNA-SEA) - 5.6 mi away @ 34650 ft, heading SE at 564 mph. Spotted for first time! [02:14:24 PM CDT] #AB0356 #N809AK #B38M #ASA522 #AS522 #ADSB #ADSBbot