ICAO: A0B840
Owner: UNITEDAIRLINES
Flt: UAL414 N14540 A21N BOS-DEN
Time: 2026-03-24 12:00:32 EDT
Min Alt: 2300 ft
Min Dist: 0.5 mi (91deg E)
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ICAO: A0B840
Owner: UNITEDAIRLINES
Flt: UAL597 N14540 A21N PHX-DEN-BOS
Time: 2026-03-23 20:08:28 EDT
Min Alt: 8850 ft
Min Dist: 0.99 nm (18deg NNE)
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ICAO: A0B840
Owner: UNITEDAIRLINES
Flt: UAL331 N14540 A21N DEN-BOS
Time: 2026-02-27 14:53:31 EST
Min Alt: 8925 ft
Min Dist: 1.9 nm (11deg N)
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ICAO: A0B840
Owner: UNITEDAIRLINES
Flt: UAL2656 N14540 A21N DEN-BOS
Time: 2026-02-22 05:21:12 EST
Min Alt: 8700 ft
Min Dist: 1 nm (25deg NNE)
Squawk: 3252
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ICAO: A0B840
Owner: UNITEDAIRLINES
Flt: UAL1989 N14540 A21N ORD-BOS
Time: 2026-02-20 21:55:49 EST
Min Alt: 9100 ft
Min Dist: 1.01 nm (28deg NNE)
Squawk: 5775
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Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N14540 - AIRBUS A321neo - WILMINGTON TRUST CO TRUSTEE UAL1667/UA1667, Cancun (CUN) to Chicago O'Hare (ORD) - 4.3 mi away @ 33025 ft, heading N at 497 mph. Spotted once before. [07:19:24 PM CST] #A0B840 #N14540 #A21N #UAL1667 #UA1667 #ADSB #ADSBbot
ICAO: A0B840
Owner: UNITED AIRLINES
Flt: UAL558 N14540 A21N DEN-BOS
Time: 2026-01-14 13:24:51 EST
Min Alt: 8475 ft
Min Dist: 1.01 nm (23° NNE)
Squawk: 1413
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ICAO: A0B840
Owner: UNITED AIRLINES
Flt: UAL1356 N14540 A21N DEN-BOS
Time: 2026-01-06 23:29:22 EST
Min Alt: 9025 ft
Min Dist: 1 nm (24° NNE)
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Planefence ICAO: A0B840
Flt: UAL2297 UNITEDAIRLINES EWR - LAS
First seen: 2025-11-18 16:18:31 EST
Min Alt: 2825 ft MSL
Min Dist: 0.26 mi
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ICAO: A0B840
Owner: UNITED AIRLINES
Flt: UAL399 N14540 A21N ORD-BOS
Time: 2025-10-20 15:10:54 EDT
Min Alt: 8700 ft
Min Dist: 3.8 km (-28° NNW)
Loudness: 2 dB
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ICAO: A0B840
Owner: UNITED AIRLINES
Flt: UAL2067 N14540 A21N ORD-BOS
Time: 2025-10-09 10:39:57 EDT
Min Alt: 8425 ft
Min Dist: 0.75 km (41° NE)
Loudness: 0 dB
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ICAO: A0B840
Owner: UNITED AIRLINES
Flt: UAL2067 N14540 A21N ORD-BOS
Time: 2025-10-09 10:39:57 EDT
Min Alt: 8425 ft
Min Dist: 0.75 km (41° NE)
Loudness: 0 dB
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Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N14540 - UNITED AIRLINES INC UAL660/UA660, Chicago O'Hare (ORD) to San Diego (SAN) - 4.2 mi away @ 33875 ft, heading SW at 513 mph. Spotted for first time! [10:05:15 AM CDT] #A0B840 #N14540 #UAL660 #UA660 #ADSB #ADSBbot
