🇺🇸 N9017L - BOEING 737-8 - Southwest Airlines SWA557/WN557, Nashville (BNA) to Kansas City (MCI) - 5.9 mi away @ 37850 ft, heading NW at 535 mph. Spotted 2x before. [09:01:41 AM CDT] #AC763B #N9017L #B38M #SOUTHWEST #SWA557 #WN557 #ADSB #ADSBbot