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

🇨🇦 C-GELQ - Boeing 737MAX 8 - Air Canada ACA990/AC990, Licenciado Benito Juarez (MEX) to Toronto Pearson (YYZ) - 6.5 mi away @ 40900 ft, heading ENE at 576 mph. Spotted 2x before! [04:20:55 PM CDT] #C05067 #C_GELQ #B38M #AIR_CANADA #ACA990 #AC990 #ADSB #ADSBbot