ICAO: A4491D
Owner: UNITEDAIRLINES
Flt: UAL1131 N37528 B39M BOS-EWR
Time: 2026-03-14 15:45:35 EDT
Min Alt: 4775 ft
Min Dist: 1.6 nm (89deg E)

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ICAO: A4491D
Owner: UNITEDAIRLINES
Flt: UAL1131 N37528 B39M BOS-EWR
Time: 2026-03-14 15:45:10 EDT
Min Alt: 3775 ft
Min Dist: 0.3 mi (121deg ESE)

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ICAO: A4491D
Owner: UNITEDAIRLINES
Flt: UAL1008 N37528 B39M BOS-SFO-SEA
Time: 2026-03-04 08:19:57 EST
Min Alt: 11150 ft
Min Dist: 1.2 nm (83deg E)

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ICAO: A4491D
Owner: UNITEDAIRLINES
Flt: UAL1372 N37528 B39M PHX-SFO-BOS
Time: 2026-03-03 21:10:24 EST
Min Alt: 9000 ft
Min Dist: 0.99 nm (20deg NNE)
Squawk: 3245
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Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N37528 - Boeing 737MAX 9 - United Airlines UAL1196/UA1196, Cancun (CUN) to Chicago O'Hare (ORD) - 3.9 mi away @ 31725 ft, heading N at 551 mph. Spotted 7x before. [04:25:23 PM CST] #A4491D #N37528 #B39M #UNITED #UAL1196 #UA1196 #ADSB #ADSBbot

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

🇺🇸 N37528 - Boeing 737MAX 9 - United Airlines UAL2483/UA2483 (ROC-ORD-IAH) - 3.8 mi away @ 30700 ft, heading SW at 472 mph. Spotted 6x before! [11:48:25 AM CDT] #A4491D #N37528 #B39M #UNITED #UAL2483 #UA2483 #ADSB #ADSBbot