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

🇺🇸 N8603F - Boeing 737NG 8H4/W - Southwest Airlines SWA4905/WN4905 - 3.5 mi away @ 10025 ft, heading WSW at 304 mph. Spotted 69x before! [10:21:42 AM CST] #ABD19E #N8603F #B738 #SOUTHWEST #SWA4905 #WN4905 #TakingOff #ADSB #ADSBbot