🇺🇸 N8639B - Boeing 737NG 8H4/W - Southwest Airlines SWA3554/WN3554, Chicago Midway (MDW) to Okc Will Rogers (OKC) - 16.2 mi away @ 41325 ft, heading WSW at 518 mph. Spotted 120x before. [10:01:28 PM CDT] #ABDD91 #N8639B #B738 #SOUTHWEST #SWA3554 #WN3554 #ADSB #ADSBbot