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

🇨🇦 C-GKUG - Airbus A330 343E - Air Canada ACA779/AC779, Montréal-Pierre Elliott Trudeau (YUL) to Los Angeles (LAX) - 5.2 mi away @ 42425 ft, heading WSW at 542 mph. Spotted for first time! [08:40:38 PM CDT] #C0611F #C_GKUG #A333 #AIR_CANADA #ACA779 #AC779 #ADSB #ADSBbot