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

🇺🇸 N9242Y - Boeing 737NG 8ASBDSF/W - DHL Air KII9242 - 4.8 mi away @ 39225 ft, heading ESE at 604 mph. Spotted 3x before. [03:19:00 PM CST] #ACCFBB #N9242Y #B738 #DRAGSTER #KII9242 #ADSB #ADSBbot