Apparatus

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sensors Mode-S transponder

A4CE25

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N409AW · BOMBARDIER Regional Jet CRJ-200 · operated by AIR WISCONSIN AIRLINES LLC

Hex
A4CE25
Octal
51147045
Decimal
10,800,677
Country
US
Tail
N409AW
Type
CRJ2
No current signal · last broadcast 1d ago
Flights observed
126
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A4CE25.

Country allocation

The ICAO 24-bit address A4CE25 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
AWI7314 Air Wisconsin 3 2026-07-03
AWI7214 Air Wisconsin 3 2026-07-03
AWI7114 Air Wisconsin 3 2026-07-03
AWI7378 - 2 2026-06-26
AWI7377 - 2 2026-06-25
AWI7319 Air Wisconsin 2 2026-07-15
AWI7278 - 2 2026-06-26
AWI7277 Air Wisconsin 2 2026-06-25
AWI7276 Air Wisconsin 2 2026-06-24
AWI7233 Air Wisconsin 2 2026-07-09
AWI7178 - 2 2026-06-26
AWI7177 Air Wisconsin 2 2026-06-25
AWI7155 Air Wisconsin 2 2026-04-14
AWI7133 Air Wisconsin 2 2026-07-07
AWI7110 Air Wisconsin 2 2026-07-05
AWI2402 Air Wisconsin 2 2026-05-10
AWI2401 Air Wisconsin 2 2026-06-13
AWI7843 - 1 2026-06-12
AWI7743 - 1 2026-06-11
AWI7643 - 1 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 AWI7448 - Jul 16, 17:10 UTCJul 16, 18:44 UTC1h 35m
2026-07-16 AWI7348 - Jul 16, 13:40 UTCJul 16, 16:00 UTC2h 20m
2026-07-15 AWI7319 HRL → GRK Jul 15, 21:45 UTCJul 15, 22:35 UTC50m
2026-07-15 AWI7465 BWI → JAX Jul 15, 17:35 UTCJul 15, 18:50 UTC1h 15m
2026-07-15 AWI7365 - Jul 15, 15:45 UTCJul 15, 16:50 UTC1h 5m
2026-07-15 AWI7165 MKE → BWI Jul 15, 12:20 UTCJul 15, 14:30 UTC2h 10m
2026-07-14 AWI7460 - Jul 14, 20:35 UTCJul 14, 21:25 UTC50m
2026-07-14 AWI7360 - Jul 14, 18:25 UTCJul 14, 19:15 UTC50m
2026-07-14 AWI7260 TNT → AEX Jul 14, 16:35 UTCJul 14, 17:05 UTC30m
2026-07-14 AWI7160 AEX → TNT Jul 14, 14:20 UTCJul 14, 14:50 UTC30m
2026-07-14 AWI7405 - Jul 14, 00:05 UTCJul 14, 01:20 UTC1h 15m
2026-07-13 AWI7305 - Jul 13, 20:30 UTCJul 13, 21:50 UTC1h 20m
2026-07-13 AWI7205 - Jul 13, 16:15 UTCJul 13, 18:05 UTC1h 50m
2026-07-13 AWI7105 - Jul 13, 13:25 UTCJul 13, 15:05 UTC1h 40m
2026-07-12 AWI7350 HRL → GRK Jul 12, 21:35 UTCJul 12, 22:45 UTC1h 10m
2026-07-12 AWI7250 CXO → HRL Jul 12, 17:20 UTCJul 12, 18:35 UTC1h 15m
2026-07-12 AWI7150 GRK → CXO Jul 12, 14:10 UTCJul 12, 15:05 UTC55m
2026-07-10 AWI7382 - Jul 10, 01:15 UTCJul 10, 03:05 UTC1h 50m
2026-07-09 AWI7282 - Jul 9, 22:10 UTCJul 10, 00:20 UTC2h 10m
2026-07-09 AWI7182 - Jul 9, 20:05 UTCJul 9, 21:10 UTC1h 5m
2026-07-09 AWI7233 TNT → AEX Jul 9, 16:15 UTCJul 9, 17:05 UTC50m
2026-07-09 AWI7153 AEX → TCL Jul 9, 14:20 UTCJul 9, 15:05 UTC45m
2026-07-08 AWI7288 GAD → AEX Jul 8, 16:00 UTCJul 8, 17:55 UTC1h 55m
2026-07-08 AWI7188 AZA → TWF Jul 8, 12:40 UTCJul 8, 14:35 UTC1h 55m
2026-07-07 AWI7233 TNT → AEX Jul 7, 17:20 UTCJul 7, 18:35 UTC1h 15m
2026-07-07 AWI7133 AEX → TNT Jul 7, 14:40 UTCJul 7, 15:55 UTC1h 15m
2026-07-06 AWI7432 - Jul 6, 21:45 UTCJul 6, 22:40 UTC55m
2026-07-06 AWI7332 AEX → SCE Jul 6, 19:50 UTCJul 6, 20:45 UTC55m
2026-07-06 AWI7232 - Jul 6, 16:35 UTCJul 6, 18:25 UTC1h 50m
2026-07-06 AWI7132 - Jul 6, 14:00 UTCJul 6, 15:35 UTC1h 35m
2026-07-05 AWI7110 AZA → DEN Jul 5, 16:10 UTCJul 5, 16:45 UTC35m
2026-07-05 AWI7110 AZA → DEN Jul 5, 14:00 UTCJul 5, 14:40 UTC40m
2026-07-04 AWI7313 - Jul 4, 15:50 UTCJul 4, 16:35 UTC45m
2026-07-04 AWI7213 - Jul 4, 14:05 UTCJul 4, 14:50 UTC45m
2026-07-04 AWI7113 - Jul 4, 12:20 UTCJul 4, 12:45 UTC25m
2026-07-03 AWI7314 AEX → MKE Jul 3, 16:15 UTCJul 3, 17:05 UTC50m
2026-07-03 AWI7214 YIP → AEX Jul 3, 14:20 UTCJul 3, 15:00 UTC40m
2026-07-03 AWI7114 AEX → YIP Jul 3, 12:20 UTCJul 3, 12:50 UTC30m
2026-07-02 AWI7358 - Jul 2, 21:15 UTCJul 3, 00:50 UTC3h 35m
2026-07-02 AWI7158 GRK → CXO Jul 2, 15:25 UTCJul 2, 20:05 UTC4h 40m
2026-07-02 AWI7506 - Jul 2, 00:05 UTCJul 2, 02:30 UTC2h 25m
2026-07-01 AWI7406 GRK → AEX Jul 1, 19:40 UTCJul 1, 21:55 UTC2h 15m
2026-07-01 AWI7306 HRL → GRK Jul 1, 16:50 UTCJul 1, 18:50 UTC2h 0m
2026-06-26 AWI7378 - Jun 26, 18:15 UTCJun 26, 18:49 UTC35m
2026-06-26 AWI7278 - Jun 26, 16:20 UTCJun 26, 17:00 UTC40m
2026-06-26 AWI7178 - Jun 26, 14:25 UTCJun 26, 14:59 UTC35m
2026-06-25 AWI7477 - Jun 25, 22:24 UTCJun 26, 00:10 UTC1h 45m
2026-06-25 AWI7377 - Jun 25, 19:54 UTCJun 25, 21:25 UTC1h 30m
2026-06-25 AWI7277 TNT → AEX Jun 25, 17:49 UTCJun 25, 18:29 UTC40m
2026-06-25 AWI7177 AEX → TNT Jun 25, 15:44 UTCJun 25, 16:20 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 N409AW page for operator, model, and routing details .

Mode-S A4CE25 frequently asked

What is Mode-S code A4CE25?
A4CE25 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N409AW.
Where is Mode-S A4CE25 registered?
Mode-S code A4CE25 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 A4CE25 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4CE25, octal 51147045, decimal 10,800,677.
What flights does A4CE25 operate?
Mode-S A4CE25 has broadcast 20 distinct callsigns, including AWI7314, AWI7214, AWI7114, AWI7378, AWI7377.