Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N8518R - Boeing 737NG 800/W - Southwest Airlines SWA503/WN503, Austin-Bergstrom (AUS) to Baltimore/Washington Thurgood Marshall (BWI) - 4.7 mi away @ 38625 ft, heading NE at 524 mph. Spotted 69x before! [06:16:25 PM CDT] #ABAE8F #N8518R #B738 #SOUTHWEST #SWA503 #WN503 #ADSB #ADSBbot