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

🇺🇸 N324RA - Boeing 737MAX 8 - American Airlines AAL1151/AA1151, Chicago O'Hare (ORD) to Phoenix Sky Harbor (PHX) - 4.4 mi away @ 35575 ft, heading SW at 538 mph. Spotted 9x before! [10:08:44 PM CDT] #A37EA4 #N324RA #B38M #AMERICAN #AAL1151 #AA1151 #ADSB #ADSBbot