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
No current signal · last broadcast 3h ago
Flights observed
630
Distinct callsigns
20
Country
US
Last broadcast
3h 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 - 50 2026-07-09
SKW4323 - 43 2026-07-09
SKW4326 - 41 2026-07-07
SKW4310 - 38 2026-06-30
SKW4246 - 38 2026-07-14
SKW4324 - 37 2026-07-03
SKW4318 - 32 2026-07-12
SKW4327 - 30 2026-07-10
SKW4253 - 30 2026-07-12
SKW4260 - 27 2026-07-13
SKW4234 - 26 2026-07-14
SKW4322 - 24 2026-07-07
SKW4317 - 24 2026-07-08
SKW4325 - 22 2026-07-07
SKW4311 - 21 2026-07-08
SKW4308 - 19 2026-07-13
SKW4230 - 19 2026-07-13
SKW4312 - 18 2026-07-12
SKW4320 - 15 2026-07-10
SKW4237 - 13 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SKW4234 - Jul 14, 03:10 UTCJul 14, 03:35 UTC25m
2026-07-14 SKW4246 - Jul 14, 01:15 UTCJul 14, 01:50 UTC35m
2026-07-14 SKW4246 GJT → SLC Jul 14, 01:17 UTCJul 14, 01:46 UTC29m
2026-07-13 SKW4246 - Jul 13, 23:20 UTCJul 13, 23:40 UTC20m
2026-07-13 SKW4260 - Jul 13, 21:35 UTCJul 13, 22:00 UTC25m
2026-07-13 SKW4260 - Jul 13, 19:30 UTCJul 13, 19:50 UTC20m
2026-07-13 SKW4308 - Jul 13, 17:45 UTCJul 13, 18:25 UTC40m
2026-07-13 SKW4308 - Jul 13, 15:45 UTCJul 13, 16:10 UTC25m
2026-07-13 SKW4230 GJT → SLC Jul 13, 13:55 UTCJul 13, 14:10 UTC15m
2026-07-13 SKW4234 - Jul 13, 02:55 UTCJul 13, 03:10 UTC15m
2026-07-12 SKW4312 SLC → SLC Jul 12, 22:55 UTCJul 13, 01:25 UTC2h 30m
2026-07-12 SKW4253 - Jul 12, 19:20 UTCJul 12, 20:01 UTC40m
2026-07-12 SKW4253 SGU → SLC Jul 12, 19:35 UTCJul 12, 19:54 UTC19m
2026-07-12 SKW4253 - Jul 12, 17:45 UTCJul 12, 18:15 UTC30m
2026-07-12 SKW4318 - Jul 12, 15:55 UTCJul 12, 16:20 UTC25m
2026-07-12 SKW4318 - Jul 12, 14:35 UTCJul 12, 14:50 UTC15m
2026-07-11 SKW4312 SLC → SLC Jul 11, 21:50 UTCJul 12, 01:00 UTC3h 10m
2026-07-11 SKW4253 - Jul 11, 19:25 UTCJul 11, 20:05 UTC40m
2026-07-11 SKW4253 - Jul 11, 17:40 UTCJul 11, 18:10 UTC30m
2026-07-11 SKW4318 - Jul 11, 15:50 UTCJul 11, 16:15 UTC25m
2026-07-11 SKW4318 - Jul 11, 13:50 UTCJul 11, 14:10 UTC20m
2026-07-11 SKW4312 BTM → SLC Jul 11, 00:31 UTCJul 11, 00:59 UTC28m
2026-07-10 SKW4312 - Jul 10, 21:45 UTCJul 10, 22:15 UTC30m
2026-07-10 SKW4320 - Jul 10, 19:20 UTCJul 10, 20:00 UTC40m
2026-07-10 SKW4320 - Jul 10, 17:25 UTCJul 10, 17:50 UTC25m
2026-07-10 SKW4230 - Jul 10, 14:00 UTCJul 10, 14:20 UTC20m
2026-07-10 SKW4234 SLC → GJT Jul 10, 03:03 UTCJul 10, 03:33 UTC30m
2026-07-10 SKW4234 - Jul 10, 02:55 UTCJul 10, 03:15 UTC20m
2026-07-10 SKW4327 - Jul 10, 01:05 UTCJul 10, 01:25 UTC20m
2026-07-10 SKW4327 PIH → SLC Jul 10, 00:59 UTCJul 10, 01:25 UTC26m
2026-07-09 SKW4327 - Jul 9, 23:50 UTCJul 10, 00:10 UTC20m
2026-07-09 SKW4321 - Jul 9, 21:40 UTCJul 9, 22:25 UTC45m
2026-07-09 SKW4321 SLC → CDC Jul 9, 19:50 UTCJul 9, 20:25 UTC35m
2026-07-09 SKW4323 - Jul 9, 17:50 UTCJul 9, 18:25 UTC35m
2026-07-09 SKW4323 - Jul 9, 16:10 UTCJul 9, 16:30 UTC20m
2026-07-08 SKW4312 SLC → SLC Jul 8, 22:15 UTCJul 9, 02:05 UTC3h 50m
2026-07-08 SKW4253 - Jul 8, 19:35 UTCJul 8, 20:15 UTC40m
2026-07-08 SKW4253 - Jul 8, 17:50 UTCJul 8, 18:20 UTC30m
2026-07-08 SKW4311 - Jul 8, 13:35 UTCJul 8, 14:00 UTC25m
2026-07-08 SKW4317 - Jul 8, 03:35 UTCJul 8, 03:55 UTC20m
2026-07-08 SKW4327 - Jul 8, 00:55 UTCJul 8, 01:30 UTC35m
2026-07-07 SKW4327 - Jul 7, 23:25 UTCJul 7, 23:45 UTC20m
2026-07-07 SKW4321 PLN → DTW Jul 7, 21:35 UTCJul 7, 22:15 UTC40m
2026-07-07 SKW4321 PLN → DTW Jul 7, 19:45 UTCJul 7, 20:15 UTC30m
2026-07-07 SKW4326 - Jul 7, 17:50 UTCJul 7, 18:20 UTC30m
2026-07-07 SKW4326 - Jul 7, 16:05 UTCJul 7, 16:25 UTC20m
2026-07-07 SKW4322 - Jul 7, 12:25 UTCJul 7, 12:55 UTC30m
2026-07-07 SKW4325 - Jul 7, 03:40 UTCJul 7, 04:00 UTC20m
2026-07-07 SKW4325 SLC → TWF Jul 7, 03:31 UTCJul 7, 04:05 UTC34m
2026-07-07 SKW4327 - Jul 7, 01:25 UTCJul 7, 02:00 UTC35m

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?
No active broadcast right now. Last signal was 3h ago.
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, SKW4323, SKW4326, SKW4310, SKW4246.