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

🇨🇦 C-GEOJ - Boeing 737MAX 8 - Air Canada ACA999/AC999, Montréal-Pierre Elliott Trudeau (YUL) to Licenciado Gustavo Diaz Ordaz (PVR) - 4.1 mi away @ 34300 ft, heading SW at 510 mph. Spotted 4x before. [10:58:23 AM CST] #C050AE #C_GEOJ #B38M #AIR_CANADA #ACA999 #AC999 #ADSB #ADSBbot