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

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

🇺🇸 N17403 - BOEING 737 MAX 9 - UMB BANK NA TRUSTEE UAL2093/UA2093, Chicago O'Hare (ORD) to George Bush Intcntl/Houston (IAH) - 4.2 mi away @ 35100 ft, heading SW at 481 mph. Spotted 2x before. [06:28:50 PM CDT] #A12A7D #N17403 #B39M #UAL2093 #UA2093 #ADSB #ADSBbot

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ICAO: A12A7D
Owner: UNITEDAIRLINES
Flt: UAL1693 N17403 B39M BZN-ORD-BOS-EWR
Time: 2026-03-30 16:38:03 EDT
Min Alt: 9275 ft
Min Dist: 1.01 nm (28deg NNE)
Squawk: 5603
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ICAO: A12A7D
Owner: UNITEDAIRLINES
Flt: UAL2067 N17403 B39M ORD-BOS
Time: 2026-03-05 10:36:33 EST
Min Alt: 9475 ft
Min Dist: 1.1 nm (-12deg NNW)

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Planefence ICAO: A12A7D
Flt: UAL800 UNITEDAIRLINES EWR - MCO
First seen: 2025-11-16 17:00:53 EST
Min Alt: 4800 ft MSL
Min Dist: 1.79 nm
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Planefence ICAO: A12A7D
Flt: UAL800 UNITEDAIRLINES EWR - MCO
First seen: 2025-11-16 17:00:16 EST
Min Alt: 3425 ft MSL
Min Dist: 0.41 mi
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Planefence ICAO: A12A7D
Flt: UAL337 UNITEDAIRLINES DEN - DFW
First seen: 2025-11-14 19:05:20 EST
Min Alt: 3025 ft MSL
Min Dist: 0.28 mi
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ICAO: A12A7D
Owner: UNITED AIRLINES
Flt: UAL1152 N17403 B39M SFO-BOS
Time: 2025-10-20 14:16:04 EDT
Min Alt: 9025 ft
Min Dist: 0.99 km (18° NNE)
Loudness: 0 dB
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ICAO: A12A7D
Owner: UNITED AIRLINES
Flt: UAL2647 N17403 B39M SFO-BOS
Time: 2025-10-17 16:52:31 EDT
Min Alt: 9475 ft
Min Dist: 0.99 km (18° NNE)
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.

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

🇺🇸 N17403 - BOEING 737 MAX 9 - UMB BANK NA TRUSTEE UAL277/UA277, Chicago O'Hare (ORD) to Austin-Bergstrom (AUS) - 9.8 mi away @ 35300 ft, heading SW at 536 mph. Spotted once before! [09:54:56 AM CDT] #A12A7D #N17403 #B39M #UAL277 #UA277 #ADSB #ADSBbot

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

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

🇺🇸 N17403 - BOEING 737 MAX 9 - UMB BANK NA TRUSTEE UAL1845/UA1845, Baltimore/Washington Thurgood Marshall (BWI) to Los Angeles (LAX) - 4.6 mi away @ 35850 ft, heading W at 534 mph. Spotted for first time! [07:21:59 PM CDT] #A12A7D #N17403 #B39M #UAL1845 #UA1845 #ADSB #ADSBbot

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Planefence ICAO: A12A7D
Flt: UAL2441 UNITEDAIRLINES TPA - EWR
First seen: 2025-06-25 06:20:35 EDT
Min Alt: 3075 ft MSL
Min Dist: 0.59 nm
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Planefence ICAO: A12A7D
Flt: UAL2441 UNITEDAIRLINES TPA - EWR
First seen: 2025-06-25 06:20:01 EDT
Min Alt: 1925 ft MSL
Min Dist: 0.12 mi
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Planefence ICAO: A12A7D
Flt: UAL2441 UNITEDAIRLINES TPA - EWR
First seen: 2025-06-24 06:25:04 EDT
Min Alt: 1925 ft MSL
Min Dist: 0.32 mi
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Planefence ICAO: A12A7D
Flt: UAL311 UNITEDAIRLINES BOS - LAX
First seen: 2025-06-03 07:45:34 EDT
Min Alt: 3575 ft MSL
Min Dist: 0.56 nm
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Planefence ICAO: A12A7D
Flt: UAL311 UNITEDAIRLINES BOS - LAX
First seen: 2025-06-03 07:44:59 EDT
Min Alt: 1975 ft MSL
Min Dist: 0.11 mi
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