Apparatus

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sensors Mode-S transponder

A9B2E0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N724EV · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A9B2E0
Octal
52331340
Decimal
11,121,376
Country
US
Tail
N724EV
Type
CRJ7
Transponder active on ground
Flights observed
294
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A9B2E0.

Country allocation

The ICAO 24-bit address A9B2E0 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
SKW4321 SkyWest Airlines 30 2026-05-27
SKW4324 SkyWest Airlines 20 2026-05-18
SKW4310 SkyWest Airlines 20 2026-05-22
SKW4326 SkyWest Airlines 19 2026-05-27
SKW4323 SkyWest Airlines 19 2026-05-26
SKW4246 SkyWest Airlines 15 2026-05-26
SKW4253 SkyWest Airlines 14 2026-05-19
SKW4317 SkyWest Airlines 12 2026-05-25
SKW4260 SkyWest Airlines 12 2026-05-29
SKW4234 SkyWest Airlines 12 2026-05-27
SKW4322 SkyWest Airlines 11 2026-05-29
SKW4311 SkyWest Airlines 11 2026-05-26
SKW4325 SkyWest Airlines 10 2026-05-29
SKW4318 SkyWest Airlines 10 2026-05-29
SKW4237 SkyWest Airlines 10 2026-05-28
SKW4315 SkyWest Airlines 9 2026-05-28
SKW4230 SkyWest Airlines 9 2026-05-11
SKW4308 SkyWest Airlines 8 2026-05-13
SKW4263 SkyWest Airlines 8 2026-05-27
SKW101A SkyWest Airlines 6 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SKW4327 SLC → PIH May 30, 01:00 UTCMay 30, 01:25 UTC25m
2026-05-29 SKW4327 SLC → PIH May 29, 23:45 UTCMay 30, 00:00 UTC15m
2026-05-29 SKW4260 XWA → MSP May 29, 21:35 UTCMay 29, 22:35 UTC1h 0m
2026-05-29 SKW4260 XWA → MSP May 29, 19:45 UTCMay 29, 20:10 UTC25m
2026-05-29 SKW4318 CDC → SLC May 29, 16:00 UTCMay 29, 16:20 UTC20m
2026-05-29 SKW4318 CDC → SLC May 29, 13:50 UTCMay 29, 14:10 UTC20m
2026-05-29 SKW4322 TWF → SLC May 29, 12:25 UTCMay 29, 12:50 UTC25m
2026-05-29 SKW4325 SLC → TWF May 29, 03:30 UTCMay 29, 03:45 UTC15m
2026-05-28 SKW4315 SGU → SLC May 28, 23:40 UTCMay 29, 00:25 UTC45m
2026-05-28 SKW4315 SGU → SLC May 28, 21:50 UTCMay 28, 22:10 UTC20m
2026-05-28 SKW4320 SLC → WYS May 28, 19:35 UTCMay 28, 20:00 UTC25m
2026-05-28 SKW4320 SLC → WYS May 28, 19:25 UTCMay 28, 20:03 UTC38m
2026-05-28 SKW4320 SLC → WYS May 28, 17:30 UTCMay 28, 17:50 UTC20m
2026-05-28 SKW4237 PLN → DTW May 28, 15:00 UTCMay 28, 15:40 UTC40m
2026-05-27 SKW4263 SLC → SGU May 27, 23:45 UTCMay 28, 00:05 UTC20m
2026-05-27 SKW4321 PLN → DTW May 27, 21:20 UTCMay 27, 22:05 UTC45m
2026-05-27 SKW4321 PLN → DTW May 27, 21:24 UTCMay 27, 22:00 UTC36m
2026-05-27 SKW4321 PLN → DTW May 27, 19:35 UTCMay 27, 19:55 UTC20m
2026-05-27 SKW4326 SLC → PIH May 27, 17:55 UTCMay 27, 18:30 UTC35m
2026-05-27 SKW4326 SLC → PIH May 27, 15:45 UTCMay 27, 16:05 UTC20m
2026-05-27 SKW4234 SLC → GJT May 27, 13:55 UTCMay 27, 14:35 UTC40m
2026-05-27 SKW4234 SLC → GJT May 27, 03:05 UTCMay 27, 03:36 UTC31m
2026-05-27 SKW4327 SLC → PIH May 27, 01:09 UTCMay 27, 01:39 UTC30m
2026-05-26 SKW4327 SLC → PIH May 26, 23:35 UTCMay 26, 23:54 UTC20m
2026-05-26 SKW4260 XWA → MSP May 26, 21:34 UTCMay 26, 22:05 UTC30m
2026-05-26 SKW4260 XWA → MSP May 26, 19:50 UTCMay 26, 20:09 UTC20m
2026-05-26 SKW4323 SLC → TWF May 26, 17:50 UTCMay 26, 18:19 UTC30m
2026-05-26 SKW4323 SLC → TWF May 26, 16:15 UTCMay 26, 16:35 UTC20m
2026-05-26 SKW4311 EKO → SLC May 26, 14:50 UTCMay 26, 15:24 UTC35m
2026-05-26 SKW125H ATL → CHA May 26, 13:24 UTCMay 26, 13:45 UTC20m
2026-05-26 SKW125H ATL → CHA May 26, 13:29 UTCMay 26, 13:54 UTC25m
2026-05-26 SKW4246 GJT → SLC May 26, 01:30 UTCMay 26, 02:10 UTC40m
2026-05-26 SKW4246 GJT → SLC May 26, 01:01 UTCMay 26, 02:09 UTC1h 8m
2026-05-25 SKW4246 GJT → SLC May 25, 23:35 UTCMay 26, 00:09 UTC35m
2026-05-25 SKW4260 XWA → MSP May 25, 21:30 UTCMay 25, 21:54 UTC25m
2026-05-25 SKW4260 XWA → MSP May 25, 19:35 UTCMay 25, 19:54 UTC20m
2026-05-25 SKW4309 SLC → WYS May 25, 17:30 UTCMay 25, 18:00 UTC30m
2026-05-25 SKW4309 SLC → WYS May 25, 15:35 UTCMay 25, 16:00 UTC25m
2026-05-25 SKW4311 EKO → SLC May 25, 13:40 UTCMay 25, 14:10 UTC30m
2026-05-25 SKW4317 SLC → EKO May 25, 03:35 UTCMay 25, 03:55 UTC20m
2026-05-24 SKW4326 SLC → PIH May 24, 17:45 UTCMay 24, 18:10 UTC25m
2026-05-24 SKW4326 SLC → PIH May 24, 15:40 UTCMay 24, 16:05 UTC25m
2026-05-24 SKW4322 TWF → SLC May 24, 12:20 UTCMay 24, 12:45 UTC25m
2026-05-24 SKW4322 TWF → SLC May 24, 12:17 UTCMay 24, 12:44 UTC27m
2026-05-23 SKW4325 SLC → TWF May 23, 23:55 UTCMay 24, 00:15 UTC20m
2026-05-23 SKW4325 SLC → TWF May 23, 23:59 UTCMay 24, 00:25 UTC26m
2026-05-23 SKW4321 PLN → DTW May 23, 21:30 UTCMay 23, 22:15 UTC45m
2026-05-23 SKW4321 PLN → DTW May 23, 19:40 UTCMay 23, 20:00 UTC20m
2026-05-23 SKW4326 SLC → PIH May 23, 17:50 UTCMay 23, 18:25 UTC36m
2026-05-23 SKW4326 SLC → PIH May 23, 17:48 UTCMay 23, 18:20 UTC32m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N724EV page for operator, model, and routing details .

Mode-S A9B2E0 frequently asked

What is Mode-S code A9B2E0?
A9B2E0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N724EV.
Where is Mode-S A9B2E0 registered?
Mode-S code A9B2E0 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A9B2E0 broadcasting right now?
Mode-S A9B2E0 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9B2E0, octal 52331340, decimal 11,121,376.
What flights does A9B2E0 operate?
Mode-S A9B2E0 has broadcast 20 distinct callsigns, including SKW4321, SKW4324, SKW4310, SKW4326, SKW4323.