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

🇨🇦 C-GRCC - Cessna Citation Excel - Skyservice Business Aviation SYB777, Montréal-Pierre Elliott Trudeau (YUL) to Detroit Metro Wayne County (DTW) - 4.9 mi away @ 40850 ft, heading SW at 384 mph. Spotted 4x before. [09:59:42 AM CDT] #C071C3 #C_GRCC #C56X #SKYBIZ #SYB777 #ADSB #ADSBbot