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)

dev adsb planefence by kx1t - sdr-e airplanes flightaware faa

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
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.

🇺🇸 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

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