Apparatus

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sensors Mode-S transponder

A25DC9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N25110 · operated by CAREER TRACK 4 LLC

Hex
A25DC9
Octal
50456711
Decimal
10,640,841
Country
US
Tail
N25110
Type
C172
No current signal · last broadcast Jul 23, 15:10 UTC
Flights observed
119
Distinct callsigns
1
Country
US
Last broadcast
Jul 23, 15:10 UTC

Last known position

Most recent position reported by Mode-S A25DC9.

Country allocation

The ICAO 24-bit address A25DC9 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 1 distinct

Callsign Airline Flights Last seen
CXK492 - 118 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 CXK492 AUS → AUS Jul 23, 13:40 UTCJul 23, 15:10 UTC1h 30m
2026-07-22 CXK492 AUS → AUS Jul 22, 17:30 UTCJul 22, 19:25 UTC1h 55m
2026-07-16 CXK492 AUS → AUS Jul 16, 17:25 UTCJul 16, 19:14 UTC1h 50m
2026-07-12 CXK492 - Jul 12, 16:40 UTCJul 12, 17:30 UTC50m
2026-07-11 CXK492 - Jul 11, 16:55 UTCJul 11, 17:05 UTC10m
2026-07-11 CXK492 - Jul 11, 12:15 UTCJul 11, 13:05 UTC50m
2026-07-10 CXK492 - Jul 10, 23:55 UTCJul 11, 00:00 UTC5m
2026-07-10 CXK492 - Jul 10, 17:00 UTCJul 10, 18:30 UTC1h 30m
2026-07-10 CXK492 - Jul 10, 12:05 UTCJul 10, 13:15 UTC1h 10m
2026-07-09 CXK492 - Jul 9, 23:55 UTCJul 10, 00:20 UTC25m
2026-07-09 CXK492 - Jul 9, 19:45 UTCJul 9, 20:00 UTC15m
2026-07-08 CXK492 AUS → AUS Jul 8, 23:05 UTCJul 9, 00:40 UTC1h 35m
2026-07-08 CXK492 - Jul 8, 15:30 UTCJul 8, 15:45 UTC15m
2026-07-08 CXK492 - Jul 8, 14:35 UTCJul 8, 14:50 UTC15m
2026-07-08 CXK492 - Jul 8, 14:00 UTCJul 8, 14:10 UTC10m
2026-07-08 CXK492 - Jul 8, 13:00 UTCJul 8, 13:20 UTC20m
2026-07-08 CXK492 AUS → AUS Jul 8, 00:25 UTCJul 8, 01:55 UTC1h 30m
2026-07-07 CXK492 - Jul 7, 21:45 UTCJul 7, 21:55 UTC10m
2026-07-07 CXK492 - Jul 7, 18:55 UTCJul 7, 20:50 UTC1h 55m
2026-07-07 CXK492 - Jul 7, 17:25 UTCJul 7, 17:45 UTC20m
2026-07-07 CXK492 - Jul 7, 17:05 UTCJul 7, 17:20 UTC15m
2026-07-07 CXK492 - Jul 7, 01:20 UTCJul 7, 01:30 UTC10m
2026-07-06 CXK492 - Jul 6, 23:45 UTCJul 7, 00:00 UTC15m
2026-07-06 CXK492 - Jul 6, 23:20 UTCJul 6, 23:30 UTC10m
2026-07-06 CXK492 AUS → AUS Jul 6, 19:35 UTCJul 6, 20:20 UTC45m
2026-07-06 CXK492 AUS → AUS Jul 6, 17:20 UTCJul 6, 18:10 UTC50m
2026-07-04 CXK492 AUS → AUS Jul 4, 21:30 UTCJul 4, 23:10 UTC1h 40m
2026-07-04 CXK492 - Jul 4, 01:35 UTCJul 4, 01:45 UTC10m
2026-07-03 CXK492 - Jul 3, 21:35 UTCJul 4, 00:10 UTC2h 35m
2026-07-03 CXK492 - Jul 3, 19:15 UTCJul 3, 19:30 UTC15m
2026-07-03 CXK492 - Jul 3, 18:50 UTCJul 3, 19:05 UTC15m
2026-07-03 CXK492 - Jul 3, 18:20 UTCJul 3, 18:35 UTC15m
2026-07-02 CXK492 - Jul 2, 22:05 UTCJul 2, 22:15 UTC10m
2026-07-02 CXK492 - Jul 2, 20:10 UTCJul 2, 21:40 UTC1h 30m
2026-07-02 CXK492 - Jul 2, 18:45 UTCJul 2, 19:15 UTC30m
2026-07-02 CXK492 - Jul 2, 17:50 UTCJul 2, 18:00 UTC10m
2026-07-02 CXK492 - Jul 2, 17:35 UTCJul 2, 17:45 UTC10m
2026-07-01 CXK492 AUS → AUS Jul 1, 20:40 UTCJul 1, 22:05 UTC1h 25m
2026-06-30 CXK492 - Jun 30, 21:25 UTCJun 30, 22:45 UTC1h 20m
2026-06-30 CXK492 - Jun 30, 21:00 UTCJun 30, 21:15 UTC15m
2026-06-30 CXK492 AUS → AUS Jun 30, 00:20 UTCJun 30, 02:25 UTC2h 6m
2026-06-29 CXK492 AUS → AUS Jun 29, 17:05 UTCJun 29, 17:59 UTC55m
2026-06-28 CXK492 - Jun 28, 21:10 UTCJun 29, 00:00 UTC2h 50m
2026-06-28 CXK492 - Jun 28, 20:45 UTCJun 28, 20:59 UTC15m
2026-06-27 CXK492 - Jun 27, 13:55 UTCJun 27, 15:14 UTC1h 20m
2026-06-26 CXK492 - Jun 26, 19:24 UTCJun 26, 20:34 UTC1h 10m
2026-06-26 CXK492 - Jun 26, 00:10 UTCJun 26, 01:34 UTC1h 25m
2026-06-25 CXK492 - Jun 25, 13:59 UTCJun 25, 15:24 UTC1h 25m
2026-06-24 - - Jun 24, 23:50 UTCJun 25, 00:05 UTC15m
2026-06-24 CXK492 - Jun 24, 22:19 UTCJun 24, 22:39 UTC20m

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 N25110 page for operator, model, and routing details .

Mode-S A25DC9 frequently asked

What is Mode-S code A25DC9?
A25DC9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N25110.
Where is Mode-S A25DC9 registered?
Mode-S code A25DC9 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 A25DC9 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 15:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A25DC9, octal 50456711, decimal 10,640,841.
What flights does A25DC9 operate?
Mode-S A25DC9 has broadcast 1 distinct callsign, including CXK492.