Apparatus

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sensors Mode-S transponder

A25865

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N250KF · EUROCOPTER BK117 C-1/2 · operated by AIR METHODS LLC

Hex
A25865
Octal
50454145
Decimal
10,639,461
Country
US
Tail
N250KF
Type
BK17
No current signal · last broadcast 1d ago
Flights observed
90
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A25865.

Country allocation

The ICAO 24-bit address A25865 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
N250KF - 90 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N250KF - Jul 13, 01:15 UTCJul 13, 02:10 UTC55m
2026-07-12 N250KF - Jul 12, 23:55 UTCJul 13, 00:25 UTC30m
2026-07-12 N250KF - Jul 12, 23:00 UTCJul 12, 23:30 UTC30m
2026-07-12 N250KF - Jul 12, 22:05 UTCJul 12, 22:15 UTC10m
2026-07-11 N250KF - Jul 11, 20:05 UTCJul 11, 20:55 UTC50m
2026-07-11 N250KF - Jul 11, 19:15 UTCJul 11, 19:25 UTC10m
2026-07-11 N250KF - Jul 11, 18:00 UTCJul 11, 18:40 UTC40m
2026-07-11 N250KF - Jul 11, 16:55 UTCJul 11, 17:05 UTC10m
2026-07-08 N250KF - Jul 8, 11:50 UTCJul 8, 12:15 UTC25m
2026-07-08 N250KF - Jul 8, 08:35 UTCJul 8, 08:50 UTC15m
2026-07-08 N250KF - Jul 8, 06:00 UTCJul 8, 06:15 UTC15m
2026-07-07 N250KF - Jul 7, 18:20 UTCJul 7, 19:15 UTC55m
2026-07-07 N250KF - Jul 7, 16:25 UTCJul 7, 16:40 UTC15m
2026-06-30 N250KF - Jun 30, 18:30 UTCJun 30, 19:00 UTC30m
2026-06-19 N250KF - Jun 19, 15:24 UTCJun 19, 15:54 UTC30m
2026-06-19 N250KF - Jun 19, 11:09 UTCJun 19, 11:39 UTC30m
2026-06-19 N250KF - Jun 19, 06:44 UTCJun 19, 07:29 UTC45m
2026-06-19 N250KF - Jun 19, 01:59 UTCJun 19, 02:09 UTC10m
2026-06-18 N250KF - Jun 18, 22:20 UTCJun 18, 22:30 UTC10m
2026-06-18 N250KF - Jun 18, 21:40 UTCJun 18, 21:50 UTC10m
2026-06-18 N250KF - Jun 18, 06:55 UTCJun 18, 08:05 UTC1h 10m
2026-06-17 N250KF - Jun 17, 00:15 UTCJun 17, 00:45 UTC30m
2026-06-16 N250KF - Jun 16, 22:55 UTCJun 16, 23:10 UTC15m
2026-06-16 N250KF - Jun 16, 18:45 UTCJun 16, 19:10 UTC25m
2026-06-16 N250KF - Jun 16, 01:04 UTCJun 16, 02:09 UTC1h 5m
2026-06-15 N250KF - Jun 15, 21:30 UTCJun 15, 22:40 UTC1h 10m
2026-06-15 N250KF - Jun 15, 05:20 UTCJun 15, 05:55 UTC35m
2026-06-13 N250KF - Jun 13, 08:55 UTCJun 13, 09:05 UTC10m
2026-06-13 N250KF - Jun 13, 08:00 UTCJun 13, 08:10 UTC10m
2026-06-12 N250KF - Jun 12, 18:30 UTCJun 12, 19:05 UTC35m
2026-06-12 N250KF - Jun 12, 05:30 UTCJun 12, 05:45 UTC15m
2026-06-12 N250KF - Jun 12, 04:30 UTCJun 12, 04:55 UTC25m
2026-06-11 N250KF - Jun 11, 16:05 UTCJun 11, 16:20 UTC15m
2026-06-09 N250KF - Jun 9, 20:10 UTCJun 9, 20:20 UTC10m
2026-06-09 N250KF - Jun 9, 19:10 UTCJun 9, 19:30 UTC20m
2026-06-08 N250KF - Jun 8, 23:05 UTCJun 8, 23:45 UTC40m
2026-06-08 N250KF - Jun 8, 22:15 UTCJun 8, 22:30 UTC15m
2026-06-08 N250KF - Jun 8, 00:50 UTCJun 8, 01:10 UTC20m
2026-06-07 N250KF - Jun 7, 04:30 UTCJun 7, 05:05 UTC35m
2026-06-07 N250KF - Jun 7, 03:35 UTCJun 7, 03:50 UTC15m
2026-06-06 N250KF - Jun 6, 05:25 UTCJun 6, 06:25 UTC1h 0m
2026-06-05 N250KF - Jun 5, 12:15 UTCJun 5, 12:50 UTC35m
2026-06-05 N250KF - Jun 5, 11:30 UTCJun 5, 11:40 UTC10m
2026-06-05 N250KF - Jun 5, 09:15 UTCJun 5, 09:25 UTC10m
2026-06-05 N250KF - Jun 5, 08:15 UTCJun 5, 08:45 UTC30m
2026-06-05 N250KF - Jun 5, 05:45 UTCJun 5, 06:05 UTC20m
2026-06-04 N250KF - Jun 4, 07:15 UTCJun 4, 08:05 UTC50m
2026-06-04 N250KF - Jun 4, 01:45 UTCJun 4, 01:55 UTC10m
2026-06-03 N250KF - Jun 3, 01:10 UTCJun 3, 01:40 UTC30m
2026-06-02 N250KF - Jun 2, 19:55 UTCJun 2, 20:20 UTC25m

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 N250KF page for operator, model, and routing details .

Mode-S A25865 frequently asked

What is Mode-S code A25865?
A25865 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N250KF.
Where is Mode-S A25865 registered?
Mode-S code A25865 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 A25865 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 A25865, octal 50454145, decimal 10,639,461.
What flights does A25865 operate?
Mode-S A25865 has broadcast 1 distinct callsign, including N250KF.