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sensors Mode-S transponder

4025BD

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-BMCV · CESSNA 152

Hex
4025BD
Octal
20022675
Decimal
4,203,965
Country
GB
Tail
G-BMCV
Type
C152
No current signal · last broadcast 10h ago
Flights observed
103
Distinct callsigns
1
Country
GB
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4025BD.

Country allocation

The ICAO 24-bit address 4025BD falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom 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
GBMCV - 99 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 GBMCV - Jul 17, 15:25 UTCJul 17, 15:55 UTC30m
2026-07-17 GBMCV - Jul 17, 14:30 UTCJul 17, 14:44 UTC15m
2026-07-14 GBMCV - Jul 14, 11:05 UTCJul 14, 11:30 UTC25m
2026-07-14 GBMCV - Jul 14, 09:30 UTCJul 14, 10:25 UTC55m
2026-07-09 GBMCV - Jul 9, 09:25 UTCJul 9, 10:15 UTC50m
2026-07-04 GBMCV - Jul 4, 14:15 UTCJul 4, 14:55 UTC40m
2026-07-04 GBMCV - Jul 4, 11:30 UTCJul 4, 11:55 UTC25m
2026-07-03 GBMCV - Jul 3, 14:10 UTCJul 3, 14:35 UTC25m
2026-07-03 GBMCV - Jul 3, 09:25 UTCJul 3, 10:05 UTC40m
2026-07-01 GBMCV - Jul 1, 11:45 UTCJul 1, 12:35 UTC50m
2026-07-01 GBMCV - Jul 1, 09:45 UTCJul 1, 10:15 UTC30m
2026-06-30 GBMCV - Jun 30, 14:35 UTCJun 30, 14:55 UTC20m
2026-06-30 GBMCV - Jun 30, 12:15 UTCJun 30, 12:25 UTC10m
2026-06-30 GBMCV - Jun 30, 09:45 UTCJun 30, 10:30 UTC45m
2026-06-28 GBMCV - Jun 28, 14:04 UTCJun 28, 14:50 UTC45m
2026-06-28 GBMCV - Jun 28, 12:29 UTCJun 28, 13:14 UTC45m
2026-06-27 GBMCV - Jun 27, 13:09 UTCJun 27, 13:44 UTC35m
2026-06-27 GBMCV - Jun 27, 10:50 UTCJun 27, 11:35 UTC45m
2026-06-27 GBMCV - Jun 27, 09:09 UTCJun 27, 10:00 UTC50m
2026-06-25 GBMCV - Jun 25, 10:30 UTCJun 25, 11:10 UTC40m
2026-06-25 GBMCV - Jun 25, 08:45 UTCJun 25, 09:29 UTC45m
2026-06-25 GBMCV - Jun 25, 07:19 UTCJun 25, 08:09 UTC50m
2026-06-23 GBMCV - Jun 23, 11:04 UTCJun 23, 11:45 UTC40m
2026-06-23 GBMCV - Jun 23, 09:34 UTCJun 23, 10:10 UTC35m
2026-06-18 - - Jun 18, 13:40 UTCJun 18, 13:55 UTC15m
2026-06-18 - - Jun 18, 12:00 UTCJun 18, 12:15 UTC15m
2026-06-18 GBMCV - Jun 18, 09:25 UTCJun 18, 09:55 UTC30m
2026-06-16 GBMCV - Jun 16, 12:45 UTCJun 16, 13:30 UTC45m
2026-06-16 GBMCV - Jun 16, 11:15 UTCJun 16, 11:55 UTC40m
2026-06-16 GBMCV - Jun 16, 09:25 UTCJun 16, 10:09 UTC45m
2026-06-14 GBMCV - Jun 14, 15:40 UTCJun 14, 16:20 UTC40m
2026-06-14 GBMCV - Jun 14, 14:05 UTCJun 14, 14:50 UTC45m
2026-06-14 GBMCV - Jun 14, 12:30 UTCJun 14, 13:10 UTC40m
2026-06-14 GBMCV - Jun 14, 10:50 UTCJun 14, 11:35 UTC45m
2026-06-14 GBMCV - Jun 14, 09:40 UTCJun 14, 10:10 UTC30m
2026-06-10 GBMCV - Jun 10, 14:35 UTCJun 10, 14:55 UTC20m
2026-06-10 GBMCV - Jun 10, 13:05 UTCJun 10, 13:30 UTC25m
2026-06-10 GBMCV - Jun 10, 11:15 UTCJun 10, 11:50 UTC35m
2026-06-10 GBMCV - Jun 10, 09:50 UTCJun 10, 10:10 UTC20m
2026-06-09 GBMCV - Jun 9, 11:10 UTCJun 9, 11:35 UTC25m
2026-06-07 GBMCV - Jun 7, 10:55 UTCJun 7, 11:10 UTC15m
2026-06-07 GBMCV - Jun 7, 09:20 UTCJun 7, 10:05 UTC45m
2026-06-05 GBMCV - Jun 5, 14:00 UTCJun 5, 14:40 UTC40m
2026-06-05 GBMCV - Jun 5, 12:55 UTCJun 5, 13:25 UTC30m
2026-06-05 GBMCV - Jun 5, 11:05 UTCJun 5, 11:45 UTC40m
2026-06-05 GBMCV - Jun 5, 09:35 UTCJun 5, 10:15 UTC40m
2026-05-31 GBMCV - May 31, 12:05 UTCMay 31, 12:45 UTC40m
2026-05-31 GBMCV - May 31, 10:35 UTCMay 31, 11:15 UTC40m
2026-05-31 GBMCV - May 31, 09:10 UTCMay 31, 09:20 UTC10m
2026-05-30 GBMCV - May 30, 14:30 UTCMay 30, 15:05 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 G-BMCV page for operator, model, and routing details .

Mode-S 4025BD frequently asked

What is Mode-S code 4025BD?
4025BD is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-BMCV.
Where is Mode-S 4025BD registered?
Mode-S code 4025BD is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4025BD broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4025BD, octal 20022675, decimal 4,203,965.
What flights does 4025BD operate?
Mode-S 4025BD has broadcast 1 distinct callsign, including GBMCV.