ICAO: A4491C
Owner: UNITEDAIRLINES
Flt: UAL2279 N37527 B39M EWR-BOS-SFO-SEA
Time: 2026-03-02 11:17:01 EST
Min Alt: 2125 ft
Min Dist: 0.3 mi (60deg ENE)

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ICAO: A4491C
Owner: UNITEDAIRLINES
Flt: UAL1665 N37527 B39M ATL-SFO-BOS
Time: 2026-03-02 07:22:00 EST
Min Alt: 8675 ft
Min Dist: 1.01 nm (20deg NNE)
Squawk: 3275
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ICAO: A4491C
Owner: UNITED AIRLINES
Flt: UAL1665 N37527 B39M SFO-BOS
Time: 2025-12-30 07:44:19 EST
Min Alt: 9825 ft
Min Dist: 0.99 nm (21° NNE)
Squawk: 6323

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ICAO: A4491C
Owner: UNITED AIRLINES
Flt: UAL558 N37527 B39M DEN-BOS
Time: 2025-12-22 13:16:04 EST
Min Alt: 9525 ft
Min Dist: 0.98 nm (21° NNE)
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ICAO: A4491C
Owner: UNITED AIRLINES
Flt: UAL558 N37527 B39M DEN-BOS
Time: 2025-10-20 13:22:00 EDT
Min Alt: 9525 ft
Min Dist: 7.01 km (-16° NNW)
Loudness: 0 dB
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ICAO: A4491C
Owner: UNITED AIRLINES
Flt: UAL2210 N37527 B39M LAX-BOS
Time: 2025-10-15 07:04:20 EDT
Min Alt: 9525 ft
Min Dist: 1.01 km (27° NNE)
Loudness: -1 dB
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Incident: United B39M at San Francisco on Sep 2nd 2025, smoke in cabin #B39M #N37527 #UA-2664
http://avherald.com/h?article=52c77b74

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

🇺🇸 N37527 - Boeing 737MAX 9 - United Airlines UAL2620/UA2620 (MSO-ORD-IAH) - 4.4 mi away @ 35975 ft, heading SW at 540 mph. Spotted 3x before! [09:21:20 PM CDT] #A4491C #N37527 #B39M #UNITED #UAL2620 #UA2620 #ADSB #ADSBbot