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

🇺🇸 N923NN - Boeing 737NG 823/W - American Airlines AAL1873/AA1873, Chicago O'Hare (ORD) to Harry Reid (LAS) - 6.2 mi away @ 36000 ft, heading WSW at 516 mph. Spotted 38x before! [04:05:23 PM CDT] #ACCA88 #N923NN #B738 #AMERICAN #AAL1873 #AA1873 #ADSB #ADSBbot