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

🇺🇸 N328TC - Boeing 737MAX 8 - American Airlines AAL3127/AA3127, Bozeman Yellowstone (BZN) to Charlotte/Douglas (CLT) - 4.3 mi away @ 37225 ft, heading ESE at 556 mph. Spotted 8x before! [04:20:08 PM CDT] #A38DB4 #N328TC #B38M #AMERICAN #AAL3127 #AA3127 #ADSB #ADSBbot