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 8h ago
Flights observed
396
Distinct callsigns
20
Country
GB
Last broadcast
8h 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
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
2026-07-14 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
2026-07-13 BAW732 - Jul 13, 08:55 UTCJul 13, 10:15 UTC1h 20m
2026-07-13 BAW315 - Jul 13, 06:05 UTCJul 13, 06:55 UTC50m
2026-07-12 BAW314S - Jul 12, 20:35 UTCJul 12, 21:10 UTC35m
2026-07-12 SHT9Q - Jul 12, 18:20 UTCJul 12, 19:15 UTC55m
2026-07-12 SHT8Q LHR → EDI Jul 12, 16:01 UTCJul 12, 16:55 UTC55m
2026-07-12 BAW585 MXP → LHR Jul 12, 12:15 UTCJul 12, 13:55 UTC1h 40m
2026-07-12 BAW584 LHR → MXP Jul 12, 09:10 UTCJul 12, 10:45 UTC1h 35m
2026-07-12 BAW315 - Jul 12, 06:05 UTCJul 12, 06:55 UTC50m
2026-07-11 BAW314S - Jul 11, 20:05 UTCJul 11, 20:45 UTC40m
2026-07-11 SHT7Y GLA → LHR Jul 11, 16:35 UTCJul 11, 17:35 UTC1h 0m
2026-07-11 SHT6E LHR → GLA Jul 11, 14:20 UTCJul 11, 15:20 UTC1h 0m
2026-07-11 BAW601Y VCE → LHR Jul 11, 10:50 UTCJul 11, 12:35 UTC1h 45m
2026-07-11 BAW600 - Jul 11, 07:45 UTCJul 11, 09:30 UTC1h 45m
2026-07-10 BAW645 - Jul 10, 15:50 UTCJul 10, 18:35 UTC2h 45m
2026-07-10 BAW644 - Jul 10, 12:00 UTCJul 10, 14:25 UTC2h 25m
2026-07-10 SHT9A EDI → LHR Jul 10, 09:05 UTCJul 10, 10:10 UTC1h 5m
2026-07-10 SHT8D LHR → EDI Jul 10, 06:50 UTCJul 10, 07:45 UTC55m
2026-07-09 SHT9L EDI → LHR Jul 9, 20:20 UTCJul 9, 21:20 UTC1h 0m
2026-07-09 SHT8K - Jul 9, 18:10 UTCJul 9, 19:00 UTC50m
2026-07-09 SHT19M ABZ → LHR Jul 9, 14:15 UTCJul 9, 15:25 UTC1h 10m
2026-07-09 SHT18V LHR → ABZ Jul 9, 12:00 UTCJul 9, 13:00 UTC1h 0m
2026-07-09 BAW919 - Jul 9, 08:40 UTCJul 9, 09:45 UTC1h 5m
2026-07-09 BAW918 - Jul 9, 06:20 UTCJul 9, 07:15 UTC55m
2026-07-08 SHT5V - Jul 8, 18:40 UTCJul 8, 19:30 UTC50m
2026-07-08 SHT4C - Jul 8, 16:50 UTCJul 8, 17:40 UTC50m
2026-07-08 BAW675 - Jul 8, 12:05 UTCJul 8, 15:10 UTC3h 5m
2026-07-08 BAW674 - Jul 8, 07:25 UTCJul 8, 09:55 UTC2h 30m
2026-07-07 SHT9Y - Jul 7, 17:55 UTCJul 7, 19:00 UTC1h 5m
2026-07-07 SHT8C - Jul 7, 16:00 UTCJul 7, 16:55 UTC55m
2026-07-07 BAW563 - Jul 7, 10:35 UTCJul 7, 12:35 UTC2h 0m
2026-07-06 BAW562 - Jul 6, 19:30 UTCJul 6, 21:30 UTC2h 0m
2026-07-06 BAW603 PSA → LHR Jul 6, 15:10 UTCJul 6, 16:50 UTC1h 40m
2026-07-06 BAW602 - Jul 6, 11:45 UTCJul 6, 13:25 UTC1h 40m
2026-07-06 SHT17Q - Jul 6, 09:05 UTCJul 6, 10:10 UTC1h 5m
2026-07-05 SHT16H - Jul 5, 19:30 UTCJul 5, 20:40 UTC1h 10m
2026-07-05 BAW911U FRA → LHR Jul 5, 05:20 UTCJul 5, 06:40 UTC1h 20m
2026-07-04 BAW910N LHR → FRA Jul 4, 18:35 UTCJul 4, 19:40 UTC1h 5m
2026-07-04 BAW437Z AMS → LHR Jul 4, 16:15 UTCJul 4, 17:00 UTC45m
2026-07-04 BAW3KG - Jul 4, 14:15 UTCJul 4, 14:55 UTC40m
2026-07-04 BAW747 GVA → LHR Jul 4, 10:30 UTCJul 4, 11:50 UTC1h 20m
2026-07-04 BAW746G - Jul 4, 08:15 UTCJul 4, 09:25 UTC1h 10m

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 8h 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 BAW851, BAW850T, BAW879, BAW878, BAW875.