Apparatus

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sensors Mode-S transponder

405A4A

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EUYB · AIRBUS A-320

Hex
405A4A
Octal
20055112
Decimal
4,217,418
Country
GB
Tail
G-EUYB
Type
A320
No current signal · last broadcast 5h ago
Flights observed
208
Distinct callsigns
20
Country
GB
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 405A4A.

Country allocation

The ICAO 24-bit address 405A4A 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
BAW86LG British Airways 4 2026-05-20
BAW879 British Airways 3 2026-05-09
BAW878 British Airways 3 2026-05-08
BAW816 British Airways 3 2026-05-23
SHT7Y - 2 2026-04-14
SHT7T - 2 2026-05-28
SHT6L - 2 2026-05-28
SHT2T - 2 2026-05-29
BAW965 British Airways 2 2026-05-22
BAW964H British Airways 2 2026-05-22
BAW934 British Airways 2 2026-04-17
BAW893 British Airways 2 2026-05-06
BAW892 British Airways 2 2026-05-06
BAW87PC British Airways 2 2026-05-15
BAW875 British Airways 2 2026-04-23
BAW874 British Airways 2 2026-04-23
BAW867 British Airways 2 2026-05-09
BAW866H British Airways 2 2026-05-09
BAW851 British Airways 2 2026-05-08
BAW850T British Airways 2 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SHT2T LHR → MAN May 29, 21:35 UTCMay 29, 22:05 UTC30m
2026-05-29 BAW845 DBV → LHR May 29, 17:55 UTCMay 29, 20:05 UTC2h 10m
2026-05-29 BAW844 LHR → DBV May 29, 14:35 UTCMay 29, 16:35 UTC2h 0m
2026-05-29 BAW787 GVA → LHR May 29, 10:20 UTCMay 29, 12:00 UTC1h 40m
2026-05-29 BAW786 LHR → ARN May 29, 07:40 UTCMay 29, 09:10 UTC1h 30m
2026-05-28 BAW907 FRA → LHR May 28, 18:45 UTCMay 28, 19:50 UTC1h 5m
2026-05-28 BAW906 LHR → FRA May 28, 16:20 UTCMay 28, 17:30 UTC1h 10m
2026-05-28 SHT7T GLA → LHR May 28, 13:30 UTCMay 28, 14:45 UTC1h 15m
2026-05-28 SHT6L - May 28, 11:30 UTCMay 28, 12:25 UTC55m
2026-05-28 SHT3G MAN → LHR May 28, 08:45 UTCMay 28, 09:20 UTC35m
2026-05-27 SHT2T - May 27, 20:45 UTCMay 27, 21:20 UTC35m
2026-05-27 BAW495 PMI → LHR May 27, 17:10 UTCMay 27, 19:05 UTC1h 55m
2026-05-27 BAW494 LHR → AGP May 27, 13:45 UTCMay 27, 15:35 UTC1h 50m
2026-05-27 BAW547 FCO → LHR May 27, 09:30 UTCMay 27, 11:40 UTC2h 10m
2026-05-27 BAW5PQ LHR → FCO May 27, 05:55 UTCMay 27, 07:55 UTC2h 0m
2026-05-26 BAW539 FCO → LHR May 26, 16:50 UTCMay 26, 19:20 UTC2h 30m
2026-05-26 BAW538 LHR → FCO May 26, 13:15 UTCMay 26, 15:45 UTC2h 30m
2026-05-26 BAW745 HER → LHR May 26, 10:05 UTCMay 26, 11:24 UTC1h 20m
2026-05-26 BAW744 LHR → HER May 26, 07:34 UTCMay 26, 08:50 UTC1h 15m
2026-05-25 BAW835W DUB → LHR May 25, 20:04 UTCMay 25, 20:50 UTC45m
2026-05-25 BAW834 LHR → DUB May 25, 17:45 UTCMay 25, 18:30 UTC45m
2026-05-25 BAW331 CDG → LHR May 25, 14:15 UTCMay 25, 15:50 UTC1h 35m
2026-05-25 BAW330U LHR → TBS May 25, 11:05 UTCMay 25, 12:45 UTC1h 40m
2026-05-25 BAW825 PRG → LHR May 25, 07:45 UTCMay 25, 08:50 UTC1h 5m
2026-05-25 BAW82DM LHR → DUB May 25, 05:35 UTCMay 25, 06:20 UTC45m
2026-05-24 BAW313 AMM → LHR May 24, 20:10 UTCMay 24, 20:55 UTC45m
2026-05-24 BAW312 LHR → AMM May 24, 18:20 UTCMay 24, 19:05 UTC45m
2026-05-24 SHT13K NCL → LHR May 24, 15:45 UTCMay 24, 16:40 UTC55m
2026-05-24 SHT12Z - May 24, 13:45 UTCMay 24, 14:25 UTC40m
2026-05-23 BAW816 LHR → CPH May 23, 15:40 UTCMay 23, 16:50 UTC1h 10m
2026-05-23 SHT7Z GLA → LHR May 23, 12:30 UTCMay 23, 13:30 UTC1h 0m
2026-05-23 SHT1480 LGW → GLA May 23, 10:25 UTCMay 23, 11:30 UTC1h 5m
2026-05-23 SHT1481 GLA → LGW May 23, 06:55 UTCMay 23, 08:00 UTC1h 5m
2026-05-22 SHT6C - May 22, 17:45 UTCMay 22, 18:50 UTC1h 5m
2026-05-22 BAW965 HAM → LHR May 22, 14:45 UTCMay 22, 16:05 UTC1h 20m
2026-05-22 BAW964H LHR → HAM May 22, 12:20 UTCMay 22, 13:25 UTC1h 5m
2026-05-22 BAW303 CDG → LHR May 22, 10:15 UTCMay 22, 10:55 UTC40m
2026-05-22 BAW302 CDG → LHR May 22, 08:10 UTCMay 22, 08:50 UTC40m
2026-05-21 BAW997T BER → LHR May 21, 19:45 UTCMay 21, 21:10 UTC1h 25m
2026-05-21 BAW996G LHR → BER May 21, 16:55 UTCMay 21, 18:20 UTC1h 25m
2026-05-21 BAW511 PMI → GIB May 21, 12:25 UTCMay 21, 14:40 UTC2h 15m
2026-05-21 BAW510 LHR → FAO May 21, 08:40 UTCMay 21, 11:05 UTC2h 25m
2026-05-21 SHT3T MAN → LHR May 21, 06:35 UTCMay 21, 07:20 UTC45m
2026-05-20 SHT2B - May 20, 20:25 UTCMay 20, 21:00 UTC35m
2026-05-20 BAW43M MAD → LHR May 20, 16:35 UTCMay 20, 18:35 UTC2h 0m
2026-05-20 BAW462V LHR → MAD May 20, 13:25 UTCMay 20, 15:15 UTC1h 50m
2026-05-20 BAW807K BLL → LHR May 20, 10:20 UTCMay 20, 11:45 UTC1h 25m
2026-05-20 BAW86LG LHR → BLL May 20, 08:05 UTCMay 20, 09:15 UTC1h 10m
2026-05-19 SHT19G ABZ → LHR May 19, 18:35 UTCMay 19, 19:40 UTC1h 5m
2026-05-19 SHT18E - May 19, 16:30 UTCMay 19, 17:30 UTC1h 0m

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

Mode-S 405A4A frequently asked

What is Mode-S code 405A4A?
405A4A is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EUYB.
Where is Mode-S 405A4A registered?
Mode-S code 405A4A 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 405A4A broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 405A4A, octal 20055112, decimal 4,217,418.
What flights does 405A4A operate?
Mode-S 405A4A has broadcast 20 distinct callsigns, including BAW86LG, BAW879, BAW878, BAW816, SHT7Y.