sensors Mode-S transponder

406091

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EUYE · AIRBUS A-320

Hex
406091
Octal
20060221
Decimal
4,219,025
Country
GB
Tail
G-EUYE
Type
A320
No current signal · last broadcast 1h ago
Flights observed
220
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 406091.

Country allocation

The ICAO 24-bit address 406091 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
BAW879 British Airways 4 2026-04-24
BAW878 British Airways 4 2026-04-23
BAW7WN British Airways 4 2026-05-28
BAW722 British Airways 4 2026-05-28
BAW875 British Airways 3 2026-05-06
BAW874 British Airways 3 2026-05-06
BAW871 British Airways 3 2026-05-05
BAW870 British Airways 3 2026-05-04
BAW851 British Airways 3 2026-05-11
BAW850T British Airways 3 2026-05-11
BAW795 British Airways 3 2026-05-14
BAW794 British Airways 3 2026-05-14
SHT7Z - 2 2026-04-15
SHT7B - 2 2026-05-15
SHT6U - 2 2026-05-14
SHT6C - 2 2026-05-30
SHT1480 - 2 2026-04-15
SHT13W - 2 2026-05-28
SHT13H - 2 2026-04-15
SHT12T - 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SHT6C - May 30, 18:05 UTCMay 30, 18:55 UTC50m
2026-05-30 SHT5U - May 30, 15:30 UTCMay 30, 16:35 UTC1h 5m
2026-05-30 SHT4D - May 30, 13:35 UTCMay 30, 14:25 UTC50m
2026-05-30 BAW747 RAK → LHR May 30, 10:35 UTCMay 30, 12:00 UTC1h 25m
2026-05-30 BAW746 LHR → RAK May 30, 08:20 UTCMay 30, 09:30 UTC1h 10m
2026-05-30 BAW99C BER → LHR May 30, 05:15 UTCMay 30, 06:55 UTC1h 40m
2026-05-29 BAW998 LHR → BER May 29, 19:15 UTCMay 29, 20:35 UTC1h 20m
2026-05-29 SHT15B - May 29, 16:40 UTCMay 29, 17:20 UTC40m
2026-05-29 SHT14G - May 29, 15:10 UTCMay 29, 15:45 UTC35m
2026-05-29 BAW45EM MAD → LHR May 29, 10:55 UTCMay 29, 12:40 UTC1h 45m
2026-05-29 BAW4MJ LHR → MAD May 29, 07:35 UTCMay 29, 09:25 UTC1h 50m
2026-05-28 SHT13W - May 28, 20:55 UTCMay 28, 21:40 UTC45m
2026-05-28 SHT12T - May 28, 19:25 UTCMay 28, 20:00 UTC35m
2026-05-28 BAW831 DUB → LHR May 28, 16:50 UTCMay 28, 17:55 UTC1h 5m
2026-05-28 BAW830D LHR → DUB May 28, 14:30 UTCMay 28, 15:15 UTC45m
2026-05-28 BAW7WN GVA → LHR May 28, 09:40 UTCMay 28, 11:50 UTC2h 10m
2026-05-28 BAW722 LHR → GVA May 28, 06:30 UTCMay 28, 08:20 UTC1h 50m
2026-05-27 SHT3B MAN → LHR May 27, 13:55 UTCMay 27, 14:30 UTC35m
2026-05-27 SHT2D LHR → MAN May 27, 11:15 UTCMay 27, 11:50 UTC35m
2026-05-27 SHT7S GLA → LHR May 27, 08:35 UTCMay 27, 09:30 UTC55m
2026-05-27 SHT6G - May 27, 06:25 UTCMay 27, 07:20 UTC56m
2026-05-26 BAW351 NCE → LHR May 26, 20:00 UTCMay 26, 21:20 UTC1h 20m
2026-05-26 BAW35R LHR → MRS May 26, 17:20 UTCMay 26, 18:55 UTC1h 35m
2026-05-26 BAW9272 GLA → OSR May 26, 10:25 UTCMay 26, 12:40 UTC2h 15m
2026-05-25 BAW512 LHR → PMI May 25, 08:30 UTCMay 25, 10:50 UTC2h 20m
2026-05-25 BAW99C BER → LHR May 25, 05:15 UTCMay 25, 06:50 UTC1h 35m
2026-05-24 BAW998 LHR → BER May 24, 19:50 UTCMay 24, 21:15 UTC1h 25m
2026-05-24 BAW38DB DUB → LHR May 24, 16:45 UTCMay 24, 17:40 UTC55m
2026-05-24 BAW84W LHR → DUB May 24, 14:45 UTCMay 24, 15:30 UTC45m
2026-05-24 BAW947L MUC → LHR May 24, 10:45 UTCMay 24, 12:45 UTC2h 0m
2026-05-24 BAW946 LHR → DUS May 24, 07:00 UTCMay 24, 08:55 UTC1h 55m
2026-05-23 BAW673 CHQ → LHR May 23, 14:00 UTCMay 23, 17:05 UTC3h 5m
2026-05-23 BAW672 LHR → LCA May 23, 09:05 UTCMay 23, 12:10 UTC3h 5m
2026-05-23 SHT5N - May 23, 06:25 UTCMay 23, 07:35 UTC1h 10m
2026-05-22 SHT4YL - May 22, 18:40 UTCMay 22, 19:30 UTC50m
2026-05-22 SHT17L - May 22, 16:05 UTCMay 22, 17:20 UTC1h 15m
2026-05-22 SHT16E - May 22, 12:55 UTCMay 22, 14:05 UTC1h 10m
2026-05-22 SHT13Q NCL → LHR May 22, 09:30 UTCMay 22, 10:25 UTC55m
2026-05-22 SHT12N - May 22, 07:30 UTCMay 22, 08:10 UTC40m
2026-05-22 BAW971 BER → LHR May 22, 04:30 UTCMay 22, 05:45 UTC1h 15m
2026-05-21 BAW970 LHR → HAJ May 21, 19:45 UTCMay 21, 20:50 UTC1h 5m
2026-05-21 BAW923 STR → LHR May 21, 17:20 UTCMay 21, 18:10 UTC50m
2026-05-21 BAW922 LHR → STR May 21, 15:00 UTCMay 21, 16:01 UTC1h 0m
2026-05-21 BAW549 FCO → LHR May 21, 11:00 UTCMay 21, 13:15 UTC2h 15m
2026-05-21 BAW548 LHR → FCO May 21, 07:30 UTCMay 21, 09:30 UTC2h 0m
2026-05-20 BAW607M PSA → LHR May 20, 16:55 UTCMay 20, 19:00 UTC2h 5m
2026-05-20 BAW606 LHR → PSA May 20, 13:45 UTCMay 20, 15:25 UTC1h 40m
2026-05-20 BAW771C ARN → LHR May 20, 09:50 UTCMay 20, 12:05 UTC2h 15m
2026-05-20 BAW770 LHR → OSL May 20, 06:35 UTCMay 20, 08:30 UTC1h 55m
2026-05-19 BAW38DB DUB → LHR May 19, 19:05 UTCMay 19, 19:55 UTC50m

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

Mode-S 406091 frequently asked

What is Mode-S code 406091?
406091 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EUYE.
Where is Mode-S 406091 registered?
Mode-S code 406091 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 406091 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406091, octal 20060221, decimal 4,219,025.
What flights does 406091 operate?
Mode-S 406091 has broadcast 20 distinct callsigns, including BAW879, BAW878, BAW7WN, BAW722, BAW875.