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

🇺🇸 N315SD - Boeing 737MAX 8 - American Airlines AAL524/AA524 (DFW-IAD-DFW) - 6.5 mi away @ 35575 ft, heading SW at 507 mph. Spotted 9x before! [12:34:42 PM CDT] #A35AF8 #N315SD #B38M #AMERICAN #AAL524 #AA524 #ADSB #ADSBbot