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

🇺🇸 N310UM - BOEING 737 MAX 8 - AMERICAN AIRLINES INC AAL326/AA326, Juan Santamaria (SJO) to Chicago O'Hare (ORD) - 4.9 mi away @ 40350 ft, heading NNE at 504 mph. Spotted 2x before. [11:04:55 AM CST] #A3489F #N310UM #B38M #AAL326 #AA326 #ADSB #ADSBbot

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

🇺🇸 N302UD - BOEING 737-8 - AMERICAN AIRLINES INC AAL326/AA326, Juan Santamaria (SJO) to Chicago O'Hare (ORD) - 4.2 mi away @ 35400 ft, heading NNE at 570 mph. Spotted 4x before! [10:03:07 AM CST] #A32886 #N302UD #B38M #AAL326 #AA326 #ADSB #ADSBbot

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

🇺🇸 N324RA - Boeing 737MAX 8 - American Airlines AAL326/AA326, Juan Santamaria (SJO) to Chicago O'Hare (ORD) - 4.7 mi away @ 39075 ft, heading NNE at 508 mph. Spotted 13x before! [10:12:34 AM CST] #A37EA4 #N324RA #B38M #AMERICAN #AAL326 #AA326 #ADSB #ADSBbot