Apparatus

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sensors Mode-S transponder

406A3D

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EUYT · AIRBUS A-320

Hex
406A3D
Octal
20065075
Decimal
4,221,501
Country
GB
Tail
G-EUYT
Type
A320
Broadcasting now · callsign SHT8V · 18,325 ft
Flights observed
216
Distinct callsigns
20
Country
GB
Last broadcast
2h ago

Current position

406A3D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 406A3D 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
BAW717 British Airways 7 2026-05-17
BAW716 British Airways 6 2026-05-17
BAW8TD British Airways 3 2026-05-28
BAW654 British Airways 3 2026-04-25
BAW617 British Airways 3 2026-05-08
BAW616 British Airways 3 2026-05-08
BAW50P British Airways 3 2026-04-13
BAW501 - 3 2026-04-13
SHT7J - 2 2026-05-11
SHT7A - 2 2026-05-29
SHT6K - 2 2026-05-11
SHT6A - 2 2026-05-28
SHT5N - 2 2026-05-04
SHT4YL - 2 2026-05-03
SHT17Y - 2 2026-05-28
SHT16C - 2 2026-05-28
BAW936D British Airways 2 2026-05-15
BAW8ER British Airways 2 2026-04-29
BAW828Y British Airways 2 2026-04-29
BAW819K British Airways 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BAW751 BSL → LHR May 30, 16:25 UTCMay 30, 17:45 UTC1h 20m
2026-05-30 BAW750 LHR → BSL May 30, 14:00 UTCMay 30, 15:05 UTC1h 5m
2026-05-30 BAW5GU BLQ → LHR May 30, 06:10 UTCMay 30, 07:55 UTC1h 45m
2026-05-29 BAW544K LHR → BLQ May 29, 21:05 UTCMay 29, 22:45 UTC1h 40m
2026-05-29 BAW43M MAD → LHR May 29, 17:35 UTCMay 29, 19:25 UTC1h 50m
2026-05-29 BAW462V LHR → MAD May 29, 14:25 UTCMay 29, 16:25 UTC2h 0m
2026-05-29 BAW759 VIE → LHR May 29, 10:25 UTCMay 29, 11:55 UTC1h 30m
2026-05-29 BAW758 LHR → SKG May 29, 08:05 UTCMay 29, 09:15 UTC1h 10m
2026-05-29 SHT7A GLA → LHR May 29, 05:10 UTCMay 29, 06:20 UTC1h 10m
2026-05-28 SHT6A - May 28, 20:40 UTCMay 28, 21:30 UTC50m
2026-05-28 BAW819K CPH → LHR May 28, 17:25 UTCMay 28, 19:00 UTC1h 35m
2026-05-28 BAW8TD LHR → CPH May 28, 14:45 UTCMay 28, 16:10 UTC1h 25m
2026-05-28 SHT17Y - May 28, 11:30 UTCMay 28, 13:00 UTC1h 30m
2026-05-28 SHT16C - May 28, 09:10 UTCMay 28, 10:15 UTC1h 5m
2026-05-27 BAW333 NCE → LHR May 27, 16:20 UTCMay 27, 18:10 UTC1h 50m
2026-05-27 BAW332 LHR → NCE May 27, 13:35 UTCMay 27, 15:10 UTC1h 35m
2026-05-27 BAW759 VIE → LHR May 27, 10:45 UTCMay 27, 12:05 UTC1h 20m
2026-05-27 BAW758 LHR → SKG May 27, 08:25 UTCMay 27, 09:35 UTC1h 10m
2026-05-26 BAW551G FCO → LHR May 26, 19:25 UTCMay 26, 21:20 UTC1h 55m
2026-05-26 BAW550 LHR → VCE May 26, 15:49 UTCMay 26, 17:55 UTC2h 5m
2026-05-26 BAW525 FLR → LHR May 26, 11:34 UTCMay 26, 13:40 UTC2h 5m
2026-05-26 BAW524 LHR → FLR May 26, 07:24 UTCMay 26, 09:40 UTC2h 15m
2026-05-25 BAW719 ZRH → LHR May 25, 18:00 UTCMay 25, 21:04 UTC3h 5m
2026-05-25 BAW718 LHR → ZRH May 25, 12:35 UTCMay 25, 15:40 UTC3h 5m
2026-05-25 BAW927E MUC → LHR May 25, 09:10 UTCMay 25, 10:45 UTC1h 35m
2026-05-25 BAW926C LHR → MUC May 25, 06:40 UTCMay 25, 08:05 UTC1h 25m
2026-05-24 BAW669R RAK → LHR May 24, 17:30 UTCMay 24, 21:05 UTC3h 35m
2026-05-24 BAW668R LHR → RAK May 24, 12:10 UTCMay 24, 15:35 UTC3h 25m
2026-05-24 SHT7T GLA → LHR May 24, 09:20 UTCMay 24, 10:20 UTC1h 0m
2026-05-24 SHT6L - May 24, 07:25 UTCMay 24, 08:25 UTC1h 0m
2026-05-23 BAW661 LCA → LHR May 23, 17:50 UTCMay 23, 20:50 UTC3h 0m
2026-05-23 BAW66GA ATH → LHR May 23, 13:10 UTCMay 23, 16:10 UTC3h 0m
2026-05-23 BAW9277 LHR → PIK May 23, 10:35 UTCMay 23, 11:30 UTC55m
2026-05-21 SHT8J - May 21, 18:05 UTCMay 21, 18:55 UTC50m
2026-05-21 BAW951L MUC → LHR May 21, 14:20 UTCMay 21, 16:30 UTC2h 10m
2026-05-21 BAW950M LHR → MUC May 21, 11:00 UTCMay 21, 12:45 UTC1h 45m
2026-05-21 BAW61XM PMO → LHR May 21, 07:20 UTCMay 21, 09:20 UTC2h 0m
2026-05-20 BAW87PC LHR → PMO May 20, 18:25 UTCMay 20, 20:05 UTC1h 40m
2026-05-20 BAW935 DUS → LHR May 20, 15:30 UTCMay 20, 17:05 UTC1h 35m
2026-05-20 BAW934 LHR → HAJ May 20, 12:55 UTCMay 20, 14:20 UTC1h 25m
2026-05-20 BAW41R AMS → LHR May 20, 10:30 UTCMay 20, 11:25 UTC55m
2026-05-20 BAW430A LHR → AMS May 20, 08:15 UTCMay 20, 08:55 UTC40m
2026-05-19 BAW543Q BLQ → LHR May 19, 18:10 UTCMay 19, 20:05 UTC1h 55m
2026-05-19 BAW542W LHR → BLQ May 19, 15:20 UTCMay 19, 17:00 UTC1h 40m
2026-05-19 BAW511 PMI → GIB May 19, 11:10 UTCMay 19, 13:40 UTC2h 30m
2026-05-19 BAW510 LHR → FAO May 19, 07:30 UTCMay 19, 09:55 UTC2h 25m
2026-05-18 BAW43HA AMS → LHR May 18, 20:00 UTCMay 18, 20:45 UTC45m
2026-05-18 BAW442K LHR → AMS May 18, 17:50 UTCMay 18, 18:30 UTC39m
2026-05-18 BAW603 PSA → LHR May 18, 14:10 UTCMay 18, 16:05 UTC1h 55m
2026-05-18 BAW602 LHR → PSA May 18, 11:10 UTCMay 18, 12:55 UTC1h 45m

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

Mode-S 406A3D frequently asked

What is Mode-S code 406A3D?
406A3D is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EUYT.
Where is Mode-S 406A3D registered?
Mode-S code 406A3D 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 406A3D broadcasting right now?
Yes. Mode-S 406A3D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406A3D, octal 20065075, decimal 4,221,501.
What flights does 406A3D operate?
Mode-S 406A3D has broadcast 20 distinct callsigns, including BAW717, BAW716, BAW8TD, BAW654, BAW617.