Planefence ICAO: A12F4C
Flt: UAL2136 UNITEDAIRLINES LAX - BOS
First seen: 2025-12-14 19:55:35 EST
Min Alt: 4575 ft MSL
Min Dist: 1.23 nm
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Planefence ICAO: A12F4C
Flt: UAL2136 UNITEDAIRLINES LAX - BOS
First seen: 2025-12-14 19:54:56 EST
Min Alt: 3200 ft MSL
Min Dist: 0.92 mi
adsb planefence by kx1t - adsbexchange - planefence

Planefence ICAO: A12F4C
Flt: UAL2400 UNITEDAIRLINES BOS - SFO
First seen: 2025-07-29 18:48:23 EDT
Min Alt: 2300 ft MSL
Min Dist: 0.47 nm
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Planefence ICAO: A12F4C
Flt: UAL2400 UNITEDAIRLINES BOS - SFO
First seen: 2025-07-29 18:47:50 EDT
Min Alt: 1775 ft MSL
Min Dist: 0.02 mi
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Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N17583 - Boeing 737MAX 9 - United Airlines UAL1355/UA1355 (LAS-SFO-IAD) - 4.4 mi away @ 37025 ft, heading ESE at 535 mph. Spotted 2x before! [03:58:03 PM CDT] #A12F4C #N17583 #B39M #UNITED #UAL1355 #UA1355 #ADSB #ADSBbot

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

🇺🇸 N17583 - Boeing 737MAX 9 - United Airlines UAL1973/UA1973 (DFW-IAH-STL) - 3.4 mi away @ 3350 ft, heading N at 327 mph. Spotted once before! [12:01:49 AM CDT] #A12F4C #N17583 #B39M #UNITED #UAL1973 #UA1973 #Landing #ADSB #ADSBbot

Planefence ICAO: A12F4C
Flt: UAL1008 UNITEDAIRLINES BOS - SFO
First seen: 2025-04-17 08:16:23 EDT
Min Alt: 2350 ft MSL
Min Dist: 0.25 mi
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Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N17583 - Boeing 737MAX 9 - United Airlines UAL2482/UA2482, Chicago O'Hare (ORD) to George Bush Intcntl/Houston (IAH) - 4.3 mi away @ 35150 ft, heading SW at 512 mph. Spotted for first time! [08:21:29 AM CST] #A12F4C #N17583 #B39M #UNITED #UAL2482 #UA2482 #ADSB #ADSBbot