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

🇺🇸 N17596 - BOEING 737 MAX 9 - United Airlines UAL311/UA311 (BOS-LAX-DEN) - 5.4 mi away @ 36075 ft, heading W at 532 mph. Spotted 4x before! [08:56:18 AM CDT] #A12F72 #N17596 #B39M #UNITED #UAL311 #UA311 #ADSB #ADSBbot

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

🇺🇸 N37577 - Boeing 737MAX 9 - United Airlines UAL311/UA311, General Edward Lawrence Logan (BOS) to Los Angeles (LAX) - 4.4 mi away @ 36175 ft, heading WSW at 552 mph. Spotted 5x before! [08:59:05 AM CDT] #A449CB #N37577 #B39M #UNITED #UAL311 #UA311 #ADSB #ADSBbot