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

🇺🇸 N121HQ - Embraer EMB-175 LR - American Eagle RPA4373/YX4373 (ORD-MEM-ORD) - 4.0 mi away @ 32250 ft, heading N at 514 mph. Spotted 30x before. [01:05:17 PM CST] #A05827 #N121HQ #E75S #BRICKYARD #RPA4373 #YX4373 #autopilot #ADSB #ADSBbot

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

🇺🇸 N105HQ - Embraer EMB-175 LR - American Eagle RPA4373/YX4373 (ORD-MEM-ORD) - 3.5 mi away @ 27925 ft, heading NNE at 497 mph. Spotted 14x before. [12:48:53 PM CST] #A01805 #N105HQ #E75S #BRICKYARD #RPA4373 #YX4373 #autopilot #ADSB #ADSBbot

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

🇺🇸 N426YX - Embraer EMB-175 LR - American Eagle RPA4373/YX4373 (ORD-MEM-ORD) - 3.4 mi away @ 27275 ft, heading NNE at 472 mph. Spotted 20x before. [01:03:16 PM CST] #A51425 #N426YX #E75L #BRICKYARD #RPA4373 #YX4373 #autopilot #ADSB #ADSBbot

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

🇺🇸 N431YX - Embraer EMB-175 LR - American Eagle RPA4373/YX4373, Portland Jetport (PWM) to Laguardia (LGA) - 4.1 mi away @ 35525 ft, heading WSW at 514 mph. Spotted 14x before! [06:27:53 PM CDT] #A52911 #N431YX #E75L #BRICKYARD #RPA4373 #YX4373 #autopilot #ADSB #ADSBbot