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

🇨🇦 C-GHLU - Boeing 767 333ERBDSF/W - Air Canada ACA7204/AC7204 - 4.5 mi away @ 37075 ft, heading SW at 510 mph. Spotted once before! [09:08:16 PM CDT] #C05857 #C_GHLU #B763 #AIR_CANADA #ACA7204 #AC7204 #ADSB #ADSBbot