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

🇨🇦 C-GXZD - Airbus A330 343E - Air Canada ACA779/AC779, Montréal-Pierre Elliott Trudeau (YUL) to Los Angeles (LAX) - 4.9 mi away @ 40450 ft, heading WSW at 479 mph. Spotted for first time! [08:46:15 PM CDT] #C083F2 #C_GXZD #A333 #AIR_CANADA #ACA779 #AC779 #ADSB #ADSBbot