Apparatus

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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 Jul 26, 20:50 UTC
Flights observed
437
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 20:50 UTC

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
BAW851 - 6 2026-06-26
BAW850T - 6 2026-06-26
BAW879 - 5 2026-06-22
BAW878 - 5 2026-06-21
BAW875 British Airways 4 2026-06-17
BAW874 - 4 2026-06-17
BAW871 British Airways 4 2026-06-11
BAW870 British Airways 4 2026-06-10
BAW863Z - 4 2026-06-19
BAW862U - 4 2026-06-19
BAW7WN British Airways 4 2026-05-28
BAW795 - 4 2026-06-22
BAW794 British Airways 4 2026-06-22
BAW78H - 4 2026-06-17
BAW781 - 4 2026-06-25
BAW780H - 4 2026-06-25
BAW747 - 4 2026-07-04
BAW729 - 4 2026-06-18
BAW722 British Airways 4 2026-05-28
BAW35R British Airways 4 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BAW617 PEG → LHR Jul 26, 19:00 UTCJul 26, 20:50 UTC1h 50m
2026-07-26 BAW616 PEG → LHR Jul 26, 15:40 UTCJul 26, 17:25 UTC1h 45m
2026-07-26 BAW541A BLQ → LHR Jul 26, 10:45 UTCJul 26, 12:35 UTC1h 50m
2026-07-26 BAW5B LHR → BLQ Jul 26, 07:45 UTCJul 26, 09:25 UTC1h 40m
2026-07-25 BAW845 DBV → LHR Jul 25, 17:10 UTCJul 25, 19:10 UTC2h 0m
2026-07-25 BAW844 LHR → WAW Jul 25, 14:00 UTCJul 25, 15:55 UTC1h 55m
2026-07-24 SHT5U - Jul 24, 15:55 UTCJul 24, 16:45 UTC50m
2026-07-24 SHT4D - Jul 24, 13:40 UTCJul 24, 14:30 UTC50m
2026-07-24 BAW759 VIE → LHR Jul 24, 10:00 UTCJul 24, 11:00 UTC1h 0m
2026-07-24 BAW758 LHR → SKG Jul 24, 07:35 UTCJul 24, 08:45 UTC1h 10m
2026-07-24 BAW971 BER → LHR Jul 24, 04:25 UTCJul 24, 05:30 UTC1h 5m
2026-07-23 BAW970 - Jul 23, 19:40 UTCJul 23, 20:45 UTC1h 5m
2026-07-23 BAW935 MUC → LHR Jul 23, 15:55 UTCJul 23, 17:30 UTC1h 35m
2026-07-23 BAW934 - Jul 23, 13:00 UTCJul 23, 14:25 UTC1h 25m
2026-07-23 BAW785 LHR → ARN Jul 23, 06:15 UTCJul 23, 08:05 UTC1h 50m
2026-07-22 BAW784 LHR → ARN Jul 22, 20:20 UTCJul 22, 22:15 UTC1h 55m
2026-07-22 BAW789 - Jul 22, 17:00 UTCJul 22, 18:40 UTC1h 40m
2026-07-22 BAW788 - Jul 22, 14:20 UTCJul 22, 15:50 UTC1h 30m
2026-07-22 BAW407 CAI → LHR Jul 22, 11:10 UTCJul 22, 12:05 UTC55m
2026-07-21 BAW41HA - Jul 21, 18:20 UTCJul 21, 19:10 UTC50m
2026-07-21 BAW44E LHR → AMS Jul 21, 16:00 UTCJul 21, 16:40 UTC40m
2026-07-21 BAW9279 MLA → LHR Jul 21, 09:45 UTCJul 21, 11:45 UTC2h 0m
2026-07-19 BAW486 LHR → BCN Jul 19, 19:25 UTCJul 19, 21:10 UTC1h 45m
2026-07-19 BAW751 GVA → LHR Jul 19, 16:10 UTCJul 19, 17:25 UTC1h 15m
2026-07-19 BAW750 - Jul 19, 13:25 UTCJul 19, 14:40 UTC1h 15m
2026-07-19 BAW327 NCE → LHR Jul 19, 10:00 UTCJul 19, 11:50 UTC1h 50m
2026-07-19 BAW326 LHR → NCE Jul 19, 07:10 UTCJul 19, 08:35 UTC1h 25m
2026-07-18 BAW455 IBZ → LHR Jul 18, 18:00 UTCJul 18, 20:00 UTC2h 0m
2026-07-18 BAW454 - Jul 18, 14:50 UTCJul 18, 16:50 UTC2h 0m
2026-07-17 BAW34V PRG → LHR Jul 17, 19:45 UTCJul 17, 21:25 UTC1h 40m
2026-07-17 BAW856Z - Jul 17, 17:09 UTCJul 17, 18:40 UTC1h 30m
2026-07-17 BAW853S - Jul 17, 12:19 UTCJul 17, 13:50 UTC1h 30m
2026-07-17 BAW852 LHR → PRG Jul 17, 09:45 UTCJul 17, 11:15 UTC1h 30m
2026-07-16 BAW969H - Jul 16, 19:14 UTCJul 16, 20:39 UTC1h 25m
2026-07-16 BAW968 - Jul 16, 17:05 UTCJul 16, 18:10 UTC1h 5m
2026-07-16 SHT19M ABZ → LHR Jul 16, 14:00 UTCJul 16, 15:10 UTC1h 10m
2026-07-16 SHT18V - Jul 16, 11:54 UTCJul 16, 13:00 UTC1h 5m
2026-07-16 BAW9255 LYS → LHR Jul 16, 09:10 UTCJul 16, 10:25 UTC1h 15m
2026-07-15 SHT6Y - Jul 15, 14:20 UTCJul 15, 15:15 UTC55m
2026-07-15 BAW569J LIN → LHR Jul 15, 09:50 UTCJul 15, 11:35 UTC1h 45m
2026-07-15 BAW568J - Jul 15, 06:30 UTCJul 15, 08:05 UTC1h 35m
2026-07-14 SHT19G ABZ → LHR Jul 14, 18:45 UTCJul 14, 19:50 UTC1h 5m
2026-07-14 SHT18E - Jul 14, 16:25 UTCJul 14, 17:25 UTC1h 0m
2026-07-14 SHT7C - Jul 14, 13:40 UTCJul 14, 14:45 UTC1h 5m
2026-07-14 SHT6N LHR → GLA Jul 14, 11:35 UTCJul 14, 12:35 UTC1h 0m
2026-07-14 BAW743 - Jul 14, 08:20 UTCJul 14, 09:40 UTC1h 20m
2026-07-14 BAW742 - Jul 14, 06:00 UTCJul 14, 07:05 UTC1h 5m
2026-07-13 BAW579V LIN → LHR Jul 13, 17:40 UTCJul 13, 19:15 UTC1h 35m
2026-07-13 BAW578 - Jul 13, 14:50 UTCJul 13, 16:15 UTC1h 25m
2026-07-13 BAW733 ZRH → LHR Jul 13, 11:40 UTCJul 13, 13:05 UTC1h 25m

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 Jul 26, 20:50 UTC.
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 BAW851, BAW850T, BAW879, BAW878, BAW875.