YAFT.LIVE

UAL1540

TUS → DEN · Boeing 737 MAX 9 · United Airlines

Flight

Status
Incomplete (signal lost)
Departure
Tucson International Airport / Morris Air National Guard Base (TUS) — Tucson, United States
Departed
2026-09-08 12:35 UTC
Arrival
Denver International Airport (DEN) — Denver, United States (predicted)
Distance flown
505 km
Straight-line distance
1029 km

Aircraft

Registration
N17443
Type
Boeing 737 MAX 9
Seats
179 total (117 Economy, 42 Economy Plus, 20 First) (typical for type, not this tail)

Altitude & speed

Max altitude
30,975 ft
Max ground speed
467 kt
Tracked
36m · 462 km
Altitude (ft, max 30,975)
016,72633,4530m30m
Ground speed (kt, max 467)
02525040m30m
Altitude (ft, max 30,975)
016,72633,4530m
Ground speed (kt, max 467)
02525040m

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

DepartedFlightRouteRegAircraftStatusDistance
2026-10-03 12:20 UTC UAL1540 TUS → DEN
Tucson → Denver
 N64844 Boeing 737-900 Completed 1135 km
2026-10-02 12:23 UTC UAL1540 TUS → DEN
Tucson → Denver
 N77518 Boeing 737-800 Completed 1149 km
2026-10-01 12:20 UTC UAL1540 TUS → DEN
Tucson → Denver
 N37562 Boeing 737 MAX 9 Completed 1102 km
2026-09-30 12:16 UTC UAL1540 TUS → DEN
Tucson → Denver
 N65832 Boeing 737-900 Completed 1186 km
2026-09-29 12:21 UTC UAL1540 TUS → DEN
Tucson → Denver
 N37287 Boeing 737-800 Completed 1142 km
2026-09-28 12:27 UTC UAL1540 TUS → DEN
Tucson → Denver
 N73278 Boeing 737-800 Completed 1191 km
2026-09-27 12:16 UTC UAL1540 TUS → DEN
Tucson → Denver
 N37281 Boeing 737-800 Completed 1101 km
2026-09-26 12:20 UTC UAL1540 TUS → DEN
Tucson → Denver
 N77539 Boeing 737-800 Completed 1113 km
2026-09-25 12:24 UTC UAL1540 TUS → DEN
Tucson → Denver
 N37541 Boeing 737 MAX 9 Completed 1140 km
2026-09-24 12:23 UTC UAL1540 TUS → DEN
Tucson → Denver
 N77542 Boeing 737-800 Completed 1091 km
2026-09-23 12:52 UTC UAL1540 TUS → DEN
Tucson → Denver
 N33294 Boeing 737-800 Completed 1149 km
2026-09-22 12:38 UTC UAL1540 TUS → DEN
Tucson → Denver
 N37290 Boeing 737-800 Completed 1214 km
2026-09-21 16:07 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N14237 Boeing 737-800 Completed (landing presumed) 2609 km
2026-09-21 12:40 UTC UAL1540 TUS → DEN
Tucson → Denver
 N87507 Boeing 737-800 Completed 1132 km
2026-09-20 15:42 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N24212 Boeing 737-800 Completed (landing presumed) 2661 km
2026-09-20 12:36 UTC UAL1540 TUS → DEN
Tucson → Denver
 N36247 Boeing 737-800 Completed 1134 km
2026-09-19 15:44 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N24224 Boeing 737-800 Completed (landing presumed) 2667 km
2026-09-19 12:38 UTC UAL1540 TUS → DEN
Tucson → Denver
 N26226 Boeing 737-800 Completed 1316 km
2026-09-18 15:59 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N77539 Boeing 737-800 Completed 2731 km
2026-09-18 12:31 UTC UAL1540 TUS → DEN
Tucson → Denver
 N33284 Boeing 737-800 Completed 1138 km
2026-09-17 15:38 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N87527 Boeing 737-800 Completed 2690 km
2026-09-17 12:35 UTC UAL1540 TUS → DEN
Tucson → Denver
 N87513 Boeing 737-800 Completed 1198 km
2026-09-16 12:38 UTC UAL1540 TUS → DEN
Tucson → Denver
 N36272 Boeing 737-800 Completed 1152 km
2026-09-15 12:35 UTC UAL1540 TUS → DEN
Tucson → Denver
 N13227 Boeing 737-800 Completed 1164 km
2026-09-14 15:44 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N78285 Boeing 737-800 Completed 2795 km
2026-09-14 12:27 UTC UAL1540 TUS → DEN
Tucson → Denver
 N35204 Boeing 737-800 Completed 1276 km
2026-09-13 15:43 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N37298 Boeing 737-800 Completed 2711 km
2026-09-13 12:33 UTC UAL1540 TUS → DEN
Tucson → Denver
 N37290 Boeing 737-800 Completed 1271 km
2026-09-12 15:23 UTC UAL1540 TUS → DEN
Tucson → Denver
 N12225 Boeing 737-800 Completed 1203 km
2026-09-11 15:43 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N26232 Boeing 737-800 Completed 2744 km
2026-09-11 12:34 UTC UAL1540 TUS → DEN
Tucson → Denver
 N76529 Boeing 737-800 Completed 1166 km
2026-09-10 15:47 UTC UAL1540 DEN → ORF
Denver → Norfolk
 N26232 Boeing 737-800 Completed 2778 km
2026-09-10 12:47 UTC UAL1540 TUS → DEN
Tucson → Denver
 N68822 Boeing 737-900 Completed 1245 km
2026-09-09 12:48 UTC UAL1540 TUS → DEN
Tucson → Denver
 N77520 Boeing 737-800 Completed 1157 km
2026-09-08 12:35 UTC UAL1540 TUS → DEN
Tucson → Denver
 N17443 Boeing 737 MAX 9 Incomplete (signal lost) ~1170 km est. (505 km recorded)
2026-09-07 12:34 UTC UAL1540 TUS → DEN
Tucson → Denver
 N36207 Boeing 737-800 Completed 1142 km
2026-09-06 12:42 UTC UAL1540 TUS → DEN
Tucson → Denver
 N35236 Boeing 737-800 Completed 1134 km
2026-09-05 12:41 UTC UAL1540 TUS → DEN
Tucson → Denver
 N76288 Boeing 737-800 Completed 1222 km
2026-09-04 12:32 UTC UAL1540 TUS → DEN
Tucson → Denver
 N37298 Boeing 737-800 Completed 1191 km
2026-09-03 12:39 UTC UAL1540 TUS → DEN
Tucson → Denver
 N78506 Boeing 737-800 Completed 1159 km
2026-09-02 12:32 UTC UAL1540 TUS → DEN
Tucson → Denver
 N33294 Boeing 737-800 Completed 1175 km
2026-09-01 12:35 UTC UAL1540 TUS → DEN
Tucson → Denver
 N36247 Boeing 737-800 Completed 1170 km
2026-08-31 14:03 UTC UAL1540 TUS → DEN
Tucson → Denver
 N12225 Boeing 737-800 Completed 1221 km
2026-08-30 12:36 UTC UAL1540 TUS → DEN
Tucson → Denver
 N76515 Boeing 737-800 Completed 1112 km
2026-08-28 12:32 UTC UAL1540 TUS → DEN
Tucson → Denver
 N14240 Boeing 737-800 Completed 1197 km
2026-08-27 12:37 UTC UAL1540 TUS → DEN
Tucson → Denver
 N77295 Boeing 737-800 Completed 1214 km
2026-08-26 12:32 UTC UAL1540 TUS → DEN
Tucson → Denver
 N77539 Boeing 737-800 Completed 1224 km
2026-08-25 12:30 UTC UAL1540 TUS → DEN
Tucson → Denver
 N17233 Boeing 737-800 Completed 1182 km
2026-08-24 12:31 UTC UAL1540 TUS → DEN
Tucson → Denver
 N35204 Boeing 737-800 Completed 1145 km
2026-08-23 12:42 UTC UAL1540 TUS → DEN
Tucson → Denver
 N18243 Boeing 737-800 Completed 1687 km

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