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

🇺🇸 N878RW - Embraer EMB-170 LR - Delta Connection RPA5603/YX5603, Laguardia (LGA) to St Louis Lambert (STL) - 3.4 mi away @ 3150 ft, heading N at 304 mph. Spotted once before. [08:55:38 PM CDT] #AC159A #N878RW #E170 #BRICKYARD #RPA5603 #YX5603 #autopilot #Landing #Arrival #ADSB #ADSBbot

Planefence ICAO: A1BE10
Flt: RPA5603 REPUBLICAIRLINES BOS - LGA
First seen: 2025-04-24 17:51:51 EDT
Min Alt: 3550 ft MSL
Min Dist: 0.4 mi
adsb planefence by kx1t - adsbexchange - planefence

Planefence ICAO: A1D45A
Flt: RPA5603 REPUBLICAIRLINES BOS - LGA
First seen: 2025-04-20 11:12:35 EDT
Min Alt: 2875 ft MSL
Min Dist: 0.23 mi
adsb planefence by kx1t - adsbexchange - planefence

Planefence ICAO: A23BFB
Flt: RPA5603 REPUBLICAIRLINES BOS - LGA
First seen: 2025-04-19 15:01:48 EDT
Min Alt: 2475 ft MSL
Min Dist: 0.18 mi
adsb planefence by kx1t - adsbexchange - planefence