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

🇺🇸 N917AK - Boeing 737MAX 9 - Alaska Airlines ASA519/AS519, Fort Lauderdale/Hollywood (FLL) to Seattle-Tacoma (SEA) - 3.8 mi away @ 33500 ft, heading WNW at 468 mph. Spotted 4x before! [08:53:22 AM CST] #ACB0B6 #N917AK #B39M #ALASKA #ASA519 #AS519 #ADSB #ADSBbot