Apparatus

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sensors Mode-S transponder

A25EC5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N25187 · operated by CAREER TRACK 3 LLC

Hex
A25EC5
Octal
50457305
Decimal
10,641,093
Country
US
Tail
N25187
Type
C172
No current signal · last broadcast 5d ago
Flights observed
137
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A25EC5.

Country allocation

The ICAO 24-bit address A25EC5 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
CXK508 - 137 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CXK508 - Jul 25, 03:00 UTCJul 25, 05:15 UTC2h 15m
2026-07-24 CXK508 - Jul 24, 18:55 UTCJul 24, 20:30 UTC1h 35m
2026-07-24 CXK508 - Jul 24, 16:40 UTCJul 24, 17:50 UTC1h 10m
2026-07-23 CXK508 - Jul 23, 18:40 UTCJul 23, 19:25 UTC45m
2026-07-22 CXK508 - Jul 22, 17:50 UTCJul 22, 18:40 UTC50m
2026-07-22 CXK508 - Jul 22, 14:30 UTCJul 22, 16:20 UTC1h 50m
2026-07-22 CXK508 - Jul 22, 11:35 UTCJul 22, 13:55 UTC2h 20m
2026-07-21 CXK508 - Jul 21, 19:25 UTCJul 21, 21:10 UTC1h 45m
2026-07-21 CXK508 - Jul 21, 17:35 UTCJul 21, 18:25 UTC50m
2026-07-21 CXK508 - Jul 21, 14:10 UTCJul 21, 15:35 UTC1h 25m
2026-07-21 CXK508 - Jul 21, 12:00 UTCJul 21, 12:10 UTC10m
2026-07-20 CXK508 - Jul 20, 23:10 UTCJul 21, 00:25 UTC1h 15m
2026-07-20 CXK508 - Jul 20, 20:40 UTCJul 20, 21:35 UTC55m
2026-07-20 CXK508 - Jul 20, 16:30 UTCJul 20, 17:55 UTC1h 25m
2026-07-20 CXK508 - Jul 20, 14:15 UTCJul 20, 15:45 UTC1h 30m
2026-07-20 CXK508 - Jul 20, 12:40 UTCJul 20, 13:05 UTC25m
2026-07-20 CXK508 - Jul 20, 11:30 UTCJul 20, 11:50 UTC20m
2026-07-19 CXK508 - Jul 19, 21:25 UTCJul 19, 22:30 UTC1h 5m
2026-07-19 CXK508 - Jul 19, 17:25 UTCJul 19, 18:20 UTC55m
2026-07-19 CXK508 - Jul 19, 13:25 UTCJul 19, 14:55 UTC1h 30m
2026-07-18 CXK508 - Jul 18, 18:55 UTCJul 18, 19:30 UTC35m
2026-07-17 CXK508 - Jul 17, 22:15 UTCJul 17, 23:25 UTC1h 10m
2026-07-17 CXK508 - Jul 17, 19:49 UTCJul 17, 21:00 UTC1h 10m
2026-07-17 CXK508 - Jul 17, 16:00 UTCJul 17, 17:55 UTC1h 55m
2026-07-16 CXK508 - Jul 16, 11:25 UTCJul 16, 13:15 UTC1h 50m
2026-07-13 CXK508 - Jul 13, 19:25 UTCJul 13, 20:15 UTC50m
2026-07-12 CXK508 - Jul 12, 19:45 UTCJul 12, 21:20 UTC1h 35m
2026-07-12 CXK508 - Jul 12, 16:55 UTCJul 12, 18:20 UTC1h 25m
2026-07-12 CXK508 - Jul 12, 14:20 UTCJul 12, 15:50 UTC1h 30m
2026-07-12 CXK508 - Jul 12, 02:01 UTCJul 12, 02:20 UTC20m
2026-07-12 CXK508 - Jul 12, 00:55 UTCJul 12, 01:20 UTC25m
2026-07-11 CXK508 - Jul 11, 19:35 UTCJul 11, 20:05 UTC30m
2026-07-11 CXK508 - Jul 11, 18:00 UTCJul 11, 19:05 UTC1h 5m
2026-07-08 CXK508 - Jul 8, 13:55 UTCJul 8, 15:25 UTC1h 30m
2026-07-07 CXK508 - Jul 7, 19:25 UTCJul 7, 21:10 UTC1h 45m
2026-07-07 CXK508 - Jul 7, 17:00 UTCJul 7, 18:10 UTC1h 10m
2026-07-07 CXK508 - Jul 7, 11:45 UTCJul 7, 12:55 UTC1h 10m
2026-07-02 CXK508 - Jul 2, 16:20 UTCJul 2, 18:55 UTC2h 35m
2026-07-02 CXK508 - Jul 2, 13:25 UTCJul 2, 14:30 UTC1h 5m
2026-07-02 CXK508 - Jul 2, 00:30 UTCJul 2, 01:50 UTC1h 20m
2026-07-01 CXK508 - Jul 1, 21:50 UTCJul 1, 22:55 UTC1h 5m
2026-07-01 CXK508 - Jul 1, 15:15 UTCJul 1, 16:55 UTC1h 40m
2026-06-30 CXK508 - Jun 30, 21:00 UTCJun 30, 22:30 UTC1h 30m
2026-06-30 CXK508 - Jun 30, 17:00 UTCJun 30, 18:15 UTC1h 15m
2026-06-30 CXK508 - Jun 30, 12:35 UTCJun 30, 15:20 UTC2h 45m
2026-06-27 CXK508 - Jun 27, 14:35 UTCJun 27, 16:44 UTC2h 10m
2026-06-26 CXK508 PWA → PWA Jun 26, 21:35 UTCJun 26, 21:59 UTC25m
2026-06-26 CXK508 - Jun 26, 19:00 UTCJun 26, 20:20 UTC1h 20m
2026-06-26 CXK508 - Jun 26, 15:45 UTCJun 26, 17:09 UTC1h 25m
2026-06-25 CXK508 - Jun 25, 22:54 UTCJun 25, 23:49 UTC55m

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 N25187 page for operator, model, and routing details .

Mode-S A25EC5 frequently asked

What is Mode-S code A25EC5?
A25EC5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N25187.
Where is Mode-S A25EC5 registered?
Mode-S code A25EC5 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 A25EC5 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A25EC5, octal 50457305, decimal 10,641,093.
What flights does A25EC5 operate?
Mode-S A25EC5 has broadcast 1 distinct callsign, including CXK508.