🇺🇸 N8727M - Boeing 737MAX 8 - Southwest Airlines SWA4157/WN4157, St Louis Lambert (STL) to San Francisco (SFO) - 3.7 mi away @ 6275 ft, heading SW at 305 mph. Spotted 78x before. [08:53:34 AM CDT] #AC011D #N8727M #B38M #SOUTHWEST #SWA4157 #WN4157 #Landing #Departure #ADSB #ADSBbot