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

🇺🇸 N8717M - Boeing 737MAX 8 - Southwest Airlines SWA3729/WN3729, Phoenix Sky Harbor (PHX) to Indianapolis (IND) - 4.6 mi away @ 41400 ft, heading E at 626 mph. Spotted 49x before! [12:01:31 AM CDT] #ABFD66 #N8717M #B38M #SOUTHWEST #SWA3729 #WN3729 #ADSB #ADSBbot