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

🇺🇸 N470AN - Airbus A321 253NYSL - American Airlines AAL2161/AA2161, San Francisco (SFO) to Philadelphia (PHL) - 4.5 mi away @ 36075 ft, heading E at 545 mph. Spotted 2x before! [11:54:48 AM CDT] #A5C127 #N470AN #A21N #AMERICAN #AAL2161 #AA2161 #ADSB #ADSBbot