Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N327DU - AIRBUS CANADA LP BD-500-1A11 - Delta Air Lines DAL1677/DL1677, General Edward Lawrence Logan (BOS) to Austin-Bergstrom (AUS) - 4.2 mi away @ 35750 ft, heading WSW at 421 mph. Spotted 6x before! [09:42:23 PM CST] #A388AF #N327DU #BCS3 #DELTA #DAL1677 #DL1677 #ADSB #ADSBbot