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

🇺🇸 N956AK - Boeing 737MAX 9 - Alaska Airlines ASA546/AS546, Indianapolis (IND) to Seattle-Tacoma (SEA) - 4.7 mi away @ 35650 ft, heading WSW at 552 mph. Spotted 6x before! [06:17:35 AM CDT] #AD4AFB #N956AK #B39M #ALASKA #ASA546 #AS546 #ADSB #ADSBbot