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

🇺🇸 N818HR - Embraer Legacy 600 - Corporate N818HR - 4.7 mi away @ 39900 ft, heading SE at 502 mph. Spotted for first time! [12:43:06 PM CDT] #AB27D3 #N818HR #E35L #N818HR #ADSB #ADSBbot

Recent photo of #N818HR — Embraer Emb-135 Legacy. Photo courtesy of FlightAware.

Look up! 🛫 #N818HR (Embraer Emb-135 Legacy) is pacing at 221 mph, low near 1,900 ft and headed southwest. Seen 4 times so far.

📡 https://globe.airplanes.live/?icao=ab27d3
📷 https://www.flightaware.com/photos/aircraft/N818HR

Recent photo of #N818HR — Embraer Emb-135 Legacy. Photo courtesy of FlightAware.

Up above! 🛫 #N818HR (Embraer Emb-135 Legacy) is pacing at 225 mph, level around 6,950 ft and headed northwest. Seen 2 times so far.

📡 https://globe.airplanes.live/?icao=ab27d3
📷 https://www.flightaware.com/photos/aircraft/N818HR

Recent photo of #N818HR — Embraer Emb-135 Legacy. Photo courtesy of FlightAware.

There it goes! 🛫 #N818HR (Embraer Emb-135 Legacy) is pacing at 238 mph, level around 6,650 ft and headed west. First time we've spotted this one. 👋

📡 https://globe.airplanes.live/?icao=ab27d3
📷 https://www.flightaware.com/photos/aircraft/N818HR