ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4409 N440YX E75L ORD-BOS
Time: 2026-03-30 14:42:25 EDT
Min Alt: 8675 ft
Min Dist: 1.01 nm (30deg NNE)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4409 N440YX E75L ORD-BOS
Time: 2026-03-26 14:56:05 EDT
Min Alt: 8500 ft
Min Dist: 0.98 nm (21deg NNE)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4389 N440YX E75L BOS-CMH-#BOS
Time: 2026-03-11 14:41:32 EDT
Min Alt: 9000 ft
Min Dist: 1.8 nm (-19deg NNW)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4642 N440YX E75L CMH-BOS
Time: 2026-03-11 09:18:11 EDT
Min Alt: 9025 ft
Min Dist: 0.99 nm (18deg NNE)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4600 N440YX E75L ROC-BOS
Time: 2026-03-03 07:50:37 EST
Min Alt: 7925 ft
Min Dist: 1.01 nm (28deg NNE)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4600 N440YX E75L ROC-BOS
Time: 2026-02-28 07:56:47 EST
Min Alt: 8675 ft
Min Dist: 1.5 nm (-38deg NW)
Squawk: 4147
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4756 N440YX E75L PHL-STL
Time: 2026-02-20 10:41:55 EST
Min Alt: 9175 ft
Min Dist: 0.99 nm (24deg NNE)
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ICAO: A54CD9
Owner: ROYALRWANDAAIRLINES
Flt: RRA4642 N440YX E75L
Time: 2026-02-10 09:19:45 EST
Min Alt: 9625 ft
Min Dist: 2.98 nm (-62deg WNW)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4561 N440YX E75L BOS-PHL
Time: 2026-02-09 17:01:28 EST
Min Alt: 4950 ft
Min Dist: 1.49 nm (112deg ESE)
airplanes flightaware faa
ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4561 N440YX E75L BOS-PHL
Time: 2026-02-09 17:01:03 EST
Min Alt: 3875 ft
Min Dist: 0.2 mi (-158deg SSW)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4368 N440YX E75L
Time: 2026-02-09 14:51:19 EST
Min Alt: 9075 ft
Min Dist: 0.99 nm (19deg NNE)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4615 N440YX E75L CVG-BOS
Time: 2026-02-08 02:07:16 EST
Min Alt: 9325 ft
Min Dist: 0.99 nm (20deg NNE)
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ICAO: A54CD9
Owner: REPUBLICAIRLINES
Flt: RPA4389 N440YX E75L BOS-CMH-#BOS
Time: 2026-02-03 13:41:54 EST
Min Alt: 8475 ft
Min Dist: 4.4 nm (-30deg NNW)
Squawk: 6644
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ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4726 N440YX E75L IND-BOS
Time: 2026-01-29 22:30:42 EST
Min Alt: 9125 ft
Min Dist: 0.99 nm (21° NNE)
dev adsb planefence by kx1t -•sdr-e•airplanes•flightaware•faa
Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N440YX - Embraer EMB-175 LR - American Eagle RPA4417/YX4417, Louis Armstrong New Orleans (MSY) to Chicago O'Hare (ORD) - 4.4 mi away @ 32750 ft, heading NNE at 560 mph. Spotted 28x before. [05:22:34 PM CST] #A54CD9 #N440YX #E75L #BRICKYARD #RPA4417 #YX4417 #autopilot #ADSB #ADSBbot
ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4340 N440YX E75L BOS-PHL
Time: 2026-01-22 13:03:34 EST
Min Alt: 4975 ft
Min Dist: 1.85 nm (99° E)•airplanes•flightaware•faa
ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4340 N440YX E75L BOS-PHL
Time: 2026-01-22 13:03:14 EST
Min Alt: 4225 ft
Min Dist: 0.2 mi (-167° SSW)
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ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4760 N440YX E75L ORD-BOS
Time: 2026-01-22 11:27:59 EST
Min Alt: 9125 ft
Min Dist: 1 nm (27° NNE)
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ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4493 N440YX E75L STL-BOS
Time: 2026-01-18 15:36:59 EST
Min Alt: 9175 ft
Min Dist: 1 nm (26° NNE)
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Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N440YX - Embraer EMB-175 LR - American Eagle RPA4351/YX4351 (ORD-AUS-ORD) - 3.8 mi away @ 30850 ft, heading SW at 531 mph. Spotted 27x before. [04:04:49 PM CST] #A54CD9 #N440YX #E75L #BRICKYARD #RPA4351 #YX4351 #autopilot #ADSB #ADSBbot
Planefence ICAO: A54CD9
Flt: RPA4470 REPUBLICAIRLINES LGA - ATL
First seen: 2026-01-04 14:37:38 EST
Min Alt: 4300 ft MSL
Min Dist: 1.44 nm
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Planefence ICAO: A54CD9
Flt: RPA4470 REPUBLICAIRLINES LGA - ATL
First seen: 2026-01-04 14:36:58 EST
Min Alt: 2575 ft MSL
Min Dist: 0.18 mi
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ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4493 N440YX E75L STL-BOS
Time: 2026-01-04 13:17:15 EST
Min Alt: 9025 ft
Min Dist: 1.1 nm (47° NE)
Squawk: 7472
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Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N440YX - Embraer EMB-175 LR - American Eagle RPA4704/YX4704 (ORD-SAT-ORD) - 4.1 mi away @ 34050 ft, heading SW at 548 mph. Spotted 26x before. [10:45:39 AM CST] #A54CD9 #N440YX #E75L #BRICKYARD #RPA4704 #YX4704 #autopilot #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N440YX - Embraer EMB-175 LR - American Eagle RPA4690/YX4690, Chicago O'Hare (ORD) to Austin-Bergstrom (AUS) - 4.4 mi away @ 33600 ft, heading SW at 490 mph. Spotted 25x before. [12:02:42 AM CST] #A54CD9 #N440YX #E75L #BRICKYARD #RPA4690 #YX4690 #autopilot #ADSB #ADSBbot
Planefence ICAO: A54CD9
Flt: RPA4798 REPUBLICAIRLINES PHL - SRQ
First seen: 2025-12-21 13:38:23 EST
Min Alt: 4250 ft MSL
Min Dist: 1.43 nm
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ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4716 N440YX E75L IND-BOS
Time: 2025-12-21 12:07:29 EST
Min Alt: 9250 ft
Min Dist: 0.99 nm (11° N)
Squawk: 6750
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ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4561 N440YX E75L ORD-BOS
Time: 2025-12-12 00:11:06 EST
Min Alt: 9450 ft
Min Dist: 0.99 nm (21° NNE)
Loudness: 2 dB
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ICAO: A54CD9
Owner: REPUBLIC AIRLINES
Flt: RPA4561 N440YX E75L ORD-BOS
Time: 2025-12-09 22:52:06 EST
Min Alt: 8175 ft
Min Dist: 1.01 nm (31° NNE)
dev adsb planefence by kx1t -•sdr-e•airplanes•flightaware•faa
Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N440YX - Embraer EMB-175 LR - American Eagle RPA4656/YX4656, Bill And Hillary Clinton Ntl/Adams Field (LIT) to Laguardia (LGA) - 8.2 mi away @ 32700 ft, heading NE at 583 mph. Spotted 24x before! [07:30:35 AM CST] #A54CD9 #N440YX #E75L #BRICKYARD #RPA4656 #YX4656 #autopilot #ADSB #ADSBbot
