🇺🇸 N8646B - Boeing 737NG 8H4/W - Southwest Airlines SWA4409/WN4409, Albuquerque Sunport (ABQ) to Baltimore/Washington Thurgood Marshall (BWI) - 5.6 mi away @ 39200 ft, heading E at 550 mph. Spotted 97x before. [01:17:29 PM CDT] #ABE0DF #N8646B #B738 #SOUTHWEST #SWA4409 #WN4409 #ADSB #ADSBbot