Apparatus

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sensors Mode-S transponder

406531

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EUYL · AIRBUS A-320

Hex
406531
Octal
20062461
Decimal
4,220,209
Country
GB
Tail
G-EUYL
Type
A320
No current signal · last broadcast 4h ago
Flights observed
347
Distinct callsigns
20
Country
GB
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 406531.

Country allocation

The ICAO 24-bit address 406531 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 20 distinct

Callsign Airline Flights Last seen
BAW493U - 5 2026-07-12
BAW492 - 5 2026-07-12
SHT7Z - 4 2026-07-01
SHT6C - 4 2026-06-30
SHT5U - 4 2026-06-10
SHT4D - 4 2026-06-10
SHT1481 - 4 2026-07-01
SHT1480 - 4 2026-07-01
BAW895 - 4 2026-07-13
BAW894 - 4 2026-07-13
BAW875 - 4 2026-07-09
BAW874 - 4 2026-07-09
SHT7T - 3 2026-05-30
SHT6L - 3 2026-05-30
BAW88LP - 3 2026-07-11
BAW889 - 3 2026-07-11
BAW856Z - 3 2026-07-10
BAW795 - 3 2026-07-13
BAW794 - 3 2026-07-13
BAW5B - 3 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BAW895 HAJ → LHR Jul 13, 21:25 UTCJul 13, 22:30 UTC1h 5m
2026-07-13 BAW894 - Jul 13, 17:50 UTCJul 13, 18:50 UTC1h 0m
2026-07-13 BAW795 - Jul 13, 13:20 UTCJul 13, 15:20 UTC2h 0m
2026-07-13 BAW794 - Jul 13, 10:20 UTCJul 13, 12:00 UTC1h 40m
2026-07-13 BAW879 - Jul 13, 05:25 UTCJul 13, 08:30 UTC3h 5m
2026-07-12 BAW878 - Jul 12, 18:50 UTCJul 12, 21:25 UTC2h 35m
2026-07-12 BAW493U GIB → LHR Jul 12, 14:20 UTCJul 12, 16:35 UTC2h 15m
2026-07-12 BAW492 LHR → GIB Jul 12, 10:45 UTCJul 12, 13:25 UTC2h 40m
2026-07-12 BAW879 - Jul 12, 05:15 UTCJul 12, 08:25 UTC3h 10m
2026-07-11 BAW878 - Jul 11, 18:05 UTCJul 11, 20:40 UTC2h 35m
2026-07-11 BAW889 HAJ → LHR Jul 11, 14:35 UTCJul 11, 15:50 UTC1h 15m
2026-07-11 BAW88LP LHR → HAJ Jul 11, 12:15 UTCJul 11, 13:15 UTC1h 0m
2026-07-11 BAW39P - Jul 11, 09:10 UTCJul 11, 10:45 UTC1h 35m
2026-07-11 BAW348K LHR → MRS Jul 11, 06:10 UTCJul 11, 07:40 UTC1h 30m
2026-07-10 BAW34V PRG → LHR Jul 10, 19:25 UTCJul 10, 21:00 UTC1h 35m
2026-07-10 BAW856Z LHR → PRG Jul 10, 16:55 UTCJul 10, 18:25 UTC1h 30m
2026-07-10 BAW893 - Jul 10, 11:35 UTCJul 10, 14:45 UTC3h 10m
2026-07-10 BAW892 - Jul 10, 07:30 UTCJul 10, 09:55 UTC2h 25m
2026-07-09 BAW895 HAJ → LHR Jul 9, 20:10 UTCJul 9, 21:15 UTC1h 5m
2026-07-09 BAW894 - Jul 9, 18:05 UTCJul 9, 19:10 UTC1h 5m
2026-07-09 BAW875 - Jul 9, 12:55 UTCJul 9, 16:00 UTC3h 5m
2026-07-09 BAW874 - Jul 9, 08:45 UTCJul 9, 11:25 UTC2h 40m
2026-07-09 BAW859 PRG → LHR Jul 9, 05:20 UTCJul 9, 07:00 UTC1h 40m
2026-07-08 BAW858V - Jul 8, 20:05 UTCJul 8, 21:35 UTC1h 30m
2026-07-08 BAW789 - Jul 8, 16:05 UTCJul 8, 17:40 UTC1h 35m
2026-07-08 BAW788 - Jul 8, 13:35 UTCJul 8, 15:05 UTC1h 30m
2026-07-08 BAW7WN VIE → LHR Jul 8, 09:30 UTCJul 8, 11:20 UTC1h 50m
2026-07-08 BAW722 - Jul 8, 06:05 UTCJul 8, 07:50 UTC1h 45m
2026-07-07 BAW351 - Jul 7, 18:35 UTCJul 7, 20:05 UTC1h 30m
2026-07-07 BAW35R - Jul 7, 15:50 UTCJul 7, 17:15 UTC1h 25m
2026-07-07 BAW347N - Jul 7, 11:30 UTCJul 7, 13:10 UTC1h 40m
2026-07-07 BAW346 - Jul 7, 08:10 UTCJul 7, 09:35 UTC1h 25m
2026-07-07 BAW859 PRG → LHR Jul 7, 04:55 UTCJul 7, 06:50 UTC1h 55m
2026-07-06 BAW858V - Jul 6, 19:50 UTCJul 6, 21:20 UTC1h 30m
2026-07-06 BAW493U GIB → LHR Jul 6, 15:45 UTCJul 6, 18:15 UTC2h 30m
2026-07-06 BAW492 - Jul 6, 12:00 UTCJul 6, 14:20 UTC2h 20m
2026-07-06 BAW851 PRG → LHR Jul 6, 08:35 UTCJul 6, 10:15 UTC1h 40m
2026-07-06 BAW850T LHR → PRG Jul 6, 05:45 UTCJul 6, 07:20 UTC1h 35m
2026-07-05 BAW34V PRG → LHR Jul 5, 19:40 UTCJul 5, 21:20 UTC1h 40m
2026-07-05 BAW856Z - Jul 5, 17:20 UTCJul 5, 18:50 UTC1h 30m
2026-07-05 BAW875 - Jul 5, 12:40 UTCJul 5, 15:50 UTC3h 10m
2026-07-05 BAW874 - Jul 5, 08:35 UTCJul 5, 11:15 UTC2h 40m
2026-07-04 BAW873 KRK → LHR Jul 4, 18:35 UTCJul 4, 20:40 UTC2h 5m
2026-07-04 BAW872 - Jul 4, 15:40 UTCJul 4, 17:30 UTC1h 50m
2026-07-04 BAW491 GIB → LHR Jul 4, 11:15 UTCJul 4, 13:40 UTC2h 25m
2026-07-04 BAW490 LHR → GIB Jul 4, 07:35 UTCJul 4, 10:00 UTC2h 25m
2026-07-03 BAW451 IBZ → LHR Jul 3, 16:55 UTCJul 3, 19:05 UTC2h 10m
2026-07-03 BAW450 - Jul 3, 13:30 UTCJul 3, 15:30 UTC2h 0m
2026-07-02 SHT19G ABZ → LHR Jul 2, 18:40 UTCJul 2, 19:50 UTC1h 10m
2026-07-02 SHT18E LHR → ABZ Jul 2, 16:15 UTCJul 2, 17:20 UTC1h 5m

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-EUYL page for operator, model, and routing details .

Mode-S 406531 frequently asked

What is Mode-S code 406531?
406531 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EUYL.
Where is Mode-S 406531 registered?
Mode-S code 406531 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 406531 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406531, octal 20062461, decimal 4,220,209.
What flights does 406531 operate?
Mode-S 406531 has broadcast 20 distinct callsigns, including BAW493U, BAW492, SHT7Z, SHT6C, SHT5U.