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

🇺🇸 N842AA - Boeing 787 9 - American Airlines AAL764/AA764 (DFW-ORD-DFW) - 4.7 mi away @ 37825 ft, heading SW at 446 mph. Spotted 2x before! [03:29:02 PM CST] #AB8748 #N842AA #B789 #AMERICAN #AAL764 #AA764 #autopilot #ADSB #ADSBbot