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

🇺🇸 N131SY - Embraer EMB-175 LR - United Express SKW4776/OO4776, Piedmont Triad (GSO) to Chicago O'Hare (ORD) - 4.4 mi away @ 33150 ft, heading NNE at 528 mph. Spotted 26x before! [07:49:10 PM CDT] #A0808F #N131SY #E75L #SKYWEST #SKW4776 #OO4776 #autopilot #ADSB #ADSBbot

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

🇺🇸 N87368 - Embraer EMB-175 LL - United Express SKW4776/OO4776, Piedmont Triad (GSO) to Chicago O'Hare (ORD) - 4.4 mi away @ 30550 ft, heading NNE at 552 mph. Spotted 5x before! [08:00:18 PM CDT] #AC04C6 #N87368 #E75L #SKYWEST #SKW4776 #OO4776 #autopilot #ADSB #ADSBbot

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

🇺🇸 N127SY - Embraer EMB-175 LR - United Express SKW4776/OO4776, Piedmont Triad (GSO) to Chicago O'Hare (ORD) - 3.7 mi away @ 28425 ft, heading NNE at 565 mph. Spotted 23x before! [07:52:56 PM CDT] #A06F5A #N127SY #E75L #SKYWEST #SKW4776 #OO4776 #autopilot #ADSB #ADSBbot