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

🇺🇸 N989NN - Boeing 737NG 823/W - American Airlines AAL1978/AA1978 (DCA-DFW-DCA) - 5.1 mi away @ 37300 ft, heading NE at 580 mph. Spotted 47x before! [06:59:18 PM CDT] #ADCDCC #N989NN #B738 #AMERICAN #AAL1978 #AA1978 #ADSB #ADSBbot