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

🇺🇸 N783TW - Douglas DC-9 15RCF - Ameristar AJI9347/7Z9347, Willow Run (YIP) to El Paso (ELP) - 4.3 mi away @ 35625 ft, heading WSW at 509 mph. Spotted 9x before! [04:59:33 AM CDT] #AA9D69 #N783TW #DC91 #AMERISTAR #AJI9347 #7Z9347 #ADSB #ADSBbot