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sensors Mode-S transponder

40813B

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-CMVD

Hex
40813B
Octal
20100473
Decimal
4,227,387
Country
GB
Tail
G-CMVD
Type
C42
No current signal · last broadcast Jul 25, 14:45 UTC
Flights observed
95
Distinct callsigns
1
Country
GB
Last broadcast
Jul 25, 14:45 UTC

Last known position

Most recent position reported by Mode-S 40813B.

Country allocation

The ICAO 24-bit address 40813B 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
GCMVD - 95 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 GCMVD HYC → HYC Jul 25, 13:50 UTCJul 25, 14:45 UTC55m
2026-07-25 GCMVD HYC → HYC Jul 25, 11:20 UTCJul 25, 11:55 UTC35m
2026-07-25 GCMVD HYC → HYC Jul 25, 08:50 UTCJul 25, 09:40 UTC50m
2026-07-23 GCMVD - Jul 23, 13:35 UTCJul 23, 14:20 UTC45m
2026-07-23 GCMVD HYC → HYC Jul 23, 11:20 UTCJul 23, 12:30 UTC1h 10m
2026-07-23 GCMVD HYC → HYC Jul 23, 09:00 UTCJul 23, 09:45 UTC45m
2026-07-21 GCMVD HYC → HYC Jul 21, 13:20 UTCJul 21, 14:10 UTC50m
2026-07-21 GCMVD HYC → HYC Jul 21, 11:30 UTCJul 21, 12:20 UTC50m
2026-07-21 GCMVD HYC → HYC Jul 21, 09:10 UTCJul 21, 10:30 UTC1h 20m
2026-07-19 GCMVD HYC → HYC Jul 19, 08:40 UTCJul 19, 09:20 UTC40m
2026-07-18 GCMVD - Jul 18, 14:30 UTCJul 18, 15:00 UTC30m
2026-07-18 GCMVD - Jul 18, 12:15 UTCJul 18, 12:50 UTC35m
2026-07-18 GCMVD HYC → HYC Jul 18, 08:50 UTCJul 18, 09:30 UTC40m
2026-07-17 GCMVD HYC → HYC Jul 17, 11:15 UTCJul 17, 12:04 UTC50m
2026-07-17 GCMVD HYC → HYC Jul 17, 09:10 UTCJul 17, 10:05 UTC55m
2026-07-16 GCMVD HYC → HYC Jul 16, 12:55 UTCJul 16, 13:40 UTC45m
2026-07-16 GCMVD HYC → HYC Jul 16, 10:29 UTCJul 16, 11:30 UTC1h 0m
2026-07-16 GCMVD HYC → HYC Jul 16, 08:50 UTCJul 16, 09:45 UTC55m
2026-07-15 GCMVD HYC → HYC Jul 15, 13:25 UTCJul 15, 14:15 UTC50m
2026-07-15 GCMVD HYC → HYC Jul 15, 11:30 UTCJul 15, 12:15 UTC45m
2026-07-11 GCMVD HYC → HYC Jul 11, 13:45 UTCJul 11, 14:20 UTC35m
2026-07-11 GCMVD HYC → HYC Jul 11, 11:25 UTCJul 11, 12:10 UTC45m
2026-07-11 GCMVD - Jul 11, 09:50 UTCJul 11, 10:30 UTC40m
2026-07-11 GCMVD - Jul 11, 08:30 UTCJul 11, 09:05 UTC35m
2026-07-07 GCMVD HYC → HYC Jul 7, 13:20 UTCJul 7, 13:50 UTC30m
2026-07-07 GCMVD HYC → HYC Jul 7, 11:00 UTCJul 7, 11:40 UTC40m
2026-07-04 GCMVD - Jul 4, 13:40 UTCJul 4, 14:35 UTC55m
2026-07-04 GCMVD - Jul 4, 12:15 UTCJul 4, 12:55 UTC40m
2026-07-03 GCMVD HYC → HYC Jul 3, 12:55 UTCJul 3, 13:25 UTC30m
2026-07-03 GCMVD HYC → HYC Jul 3, 10:35 UTCJul 3, 11:15 UTC40m
2026-06-30 GCMVD HYC → HYC Jun 30, 13:20 UTCJun 30, 14:00 UTC40m
2026-06-30 GCMVD HYC → HYC Jun 30, 11:05 UTCJun 30, 11:40 UTC35m
2026-06-27 GCMVD HYC → HYC Jun 27, 11:44 UTCJun 27, 12:34 UTC50m
2026-06-27 GCMVD - Jun 27, 10:14 UTCJun 27, 10:50 UTC35m
2026-06-27 GCMVD - Jun 27, 08:44 UTCJun 27, 09:15 UTC30m
2026-06-23 GCMVD HYC → HYC Jun 23, 08:59 UTCJun 23, 09:54 UTC55m
2026-06-20 GCMVD HYC → HYC Jun 20, 09:59 UTCJun 20, 10:59 UTC1h 0m
2026-06-19 GCMVD - Jun 19, 12:59 UTCJun 19, 13:50 UTC50m
2026-06-19 GCMVD HYC → HYC Jun 19, 10:29 UTCJun 19, 12:25 UTC1h 55m
2026-06-16 GCMVD HYC → HYC Jun 16, 13:25 UTCJun 16, 14:20 UTC55m
2026-06-16 GCMVD HYC → HYC Jun 16, 11:15 UTCJun 16, 12:00 UTC45m
2026-06-13 GCMVD HYC → HYC Jun 13, 14:15 UTCJun 13, 14:50 UTC35m
2026-06-13 GCMVD HYC → HYC Jun 13, 09:50 UTCJun 13, 10:50 UTC1h 0m
2026-06-07 GCMVD - Jun 7, 14:25 UTCJun 7, 15:15 UTC50m
2026-06-05 GCMVD HYC → HYC Jun 5, 14:45 UTCJun 5, 15:25 UTC40m
2026-06-05 GCMVD - Jun 5, 13:35 UTCJun 5, 14:05 UTC30m
2026-06-05 GCMVD - Jun 5, 12:15 UTCJun 5, 12:45 UTC30m
2026-05-30 GCMVD HYC → HYC May 30, 13:55 UTCMay 30, 14:40 UTC45m
2026-05-30 GCMVD - May 30, 10:35 UTCMay 30, 11:10 UTC35m
2026-05-30 GCMVD - May 30, 09:20 UTCMay 30, 09:45 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 G-CMVD page for operator, model, and routing details .

Mode-S 40813B frequently asked

What is Mode-S code 40813B?
40813B is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-CMVD.
Where is Mode-S 40813B registered?
Mode-S code 40813B 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 40813B broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 14:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40813B, octal 20100473, decimal 4,227,387.
What flights does 40813B operate?
Mode-S 40813B has broadcast 1 distinct callsign, including GCMVD.