ICAO-code: A94B50
Eigenaar: UNITEDAIRLINES
Vluuch: UAL521 N69838 B739 IAH-BOS
Tied: 2026-10-10 00:23:47 EDT
Min. heugde: 8275 ft
Min. aafstaand: 1 nm (20deg NNE)

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

ICAO-code: A44938
Eigenaar: UNITEDAIRLINES
Vluuch: UAL521 N37530 B39M IAH-BOS
Tied: 2026-10-06 00:24:03 EDT
Min. heugde: 9400 ft
Min. aafstaand: 0.99 nm (24deg NNE)
Transpondercode: 2757
dev adsb planefence by kx1t - sdr-e airplanes flightaware faa

ICAO-code: A12AE6
Eigenaar: UNITEDAIRLINES
Vluuch: UAL521 N17433 B39M IAH-BOS
Tied: 2026-09-24 00:17:33 EDT
Min. heugde: 9450 ft
Min. aafstaand: 1.01 nm (25deg NNE)

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

ICAO-code: AA7F2B
Eigenaar: UNITEDAIRLINES
Vluuch: UAL521 N77588 B39M IAH-BOS
Tied: 2026-09-18 00:21:13 EDT
Min. heugde: 8025 ft
Min. aafstaand: 1.01 nm (28deg NNE)
Transpondercode: 2564
dev adsb planefence by kx1t - sdr-e airplanes flightaware faa

🇺🇸 N17550 - Boeing 737MAX 9 - United Airlines UAL521/UA521, George Bush Intcntl/Houston (IAH) to General Edward Lawrence Logan (BOS) - 4.7 mi away @ 35300 ft, heading NE at 546 mph. Spotted 8x before. [08:19:38 PM CDT] #A12EE0 #N17550 #B39M #UNITED #UAL521 #UA521 #ADSB #ADSBbot