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

🇺🇸 N17321 - Boeing 737MAX 8 - United Airlines UAL369/UA369, Ronald Reagan Washington Ntl (DCA) to San Francisco (SFO) - 4.1 mi away @ 34925 ft, heading W at 452 mph. Spotted 3x before. [07:57:42 AM CST] #A1270A #N17321 #B38M #UNITED #UAL369 #UA369 #ADSB #ADSBbot

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

🇺🇸 N17320 - Boeing 737MAX 8 - United Airlines UAL369/UA369 (DCA-SFO-SAN) - 4.8 mi away @ 38125 ft, heading W at 491 mph. Spotted 6x before! [07:51:43 AM CDT] #A12709 #N17320 #B38M #UNITED #UAL369 #UA369 #ADSB #ADSBbot