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
No current signal · last broadcast 8h ago
Flights observed
399
Distinct callsigns
20
Country
GB
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 406A3D.

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 8 2026-06-01
BAW716 British Airways 7 2026-06-01
BAW654 - 4 2026-06-19
BAW617 British Airways 4 2026-06-11
BAW616 British Airways 4 2026-06-11
BAW379 - 4 2026-06-15
BAW378 - 4 2026-06-14
SHT7A - 3 2026-06-25
SHT6A - 3 2026-06-24
SHT5N - 3 2026-07-02
SHT4YL - 3 2026-07-01
BAW997T - 3 2026-07-14
BAW996G - 3 2026-07-14
BAW8TD British Airways 3 2026-05-28
BAW8ER British Airways 3 2026-05-31
BAW87PC British Airways 3 2026-06-06
BAW84NT - 3 2026-07-08
BAW846W - 3 2026-07-07
BAW828Y British Airways 3 2026-05-31
BAW669R British Airways 3 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BAW997T BER → LHR Jul 14, 19:25 UTCJul 14, 20:55 UTC1h 30m
2026-07-14 BAW996G - Jul 14, 16:40 UTCJul 14, 18:00 UTC1h 20m
2026-07-14 BAW627 ATH → LHR Jul 14, 11:50 UTCJul 14, 15:20 UTC3h 30m
2026-07-14 BAW626 - Jul 14, 07:15 UTCJul 14, 10:10 UTC2h 55m
2026-07-13 BAW619 PMO → LHR Jul 13, 18:20 UTCJul 13, 21:05 UTC2h 45m
2026-07-13 BAW618 - Jul 13, 14:30 UTCJul 13, 16:50 UTC2h 20m
2026-07-13 BAW45EM MAD → LHR Jul 13, 10:55 UTCJul 13, 12:40 UTC1h 45m
2026-07-13 BAW4MJ - Jul 13, 07:10 UTCJul 13, 09:25 UTC2h 15m
2026-07-12 SHT5Q BHD → LHR Jul 12, 19:15 UTCJul 12, 20:10 UTC55m
2026-07-12 SHT4J - Jul 12, 17:35 UTCJul 12, 18:25 UTC50m
2026-07-12 BAW43XP - Jul 12, 14:45 UTCJul 12, 15:40 UTC55m
2026-07-12 BAW3ET LHR → AMS Jul 12, 12:20 UTCJul 12, 13:01 UTC40m
2026-07-12 SHT9A EDI → LHR Jul 12, 09:25 UTCJul 12, 10:25 UTC1h 0m
2026-07-12 SHT8D LHR → EDI Jul 12, 07:15 UTCJul 12, 08:10 UTC55m
2026-07-11 BAW777C ARN → LHR Jul 11, 20:10 UTCJul 11, 22:15 UTC2h 5m
2026-07-11 BAW776F LHR → ARN Jul 11, 17:05 UTCJul 11, 18:55 UTC1h 50m
2026-07-11 SHT7Z GLA → LHR Jul 11, 14:15 UTCJul 11, 15:20 UTC1h 5m
2026-07-11 SHT1480 LGW → GLA Jul 11, 11:10 UTCJul 11, 12:10 UTC1h 0m
2026-07-11 SHT1481 GLA → LGW Jul 11, 08:35 UTCJul 11, 09:40 UTC1h 5m
2026-07-10 SHT6C LHR → GLA Jul 10, 19:25 UTCJul 10, 20:25 UTC1h 0m
2026-07-10 BAW553C - Jul 10, 15:30 UTCJul 10, 17:55 UTC2h 25m
2026-07-10 BAW552F - Jul 10, 10:55 UTCJul 10, 12:55 UTC2h 0m
2026-07-10 BAW563 - Jul 10, 05:15 UTCJul 10, 07:35 UTC2h 20m
2026-07-09 BAW562 - Jul 9, 21:05 UTCJul 9, 23:15 UTC2h 10m
2026-07-08 BAW465M - Jul 8, 20:35 UTCJul 8, 22:20 UTC1h 45m
2026-07-08 BAW46BL - Jul 8, 17:25 UTCJul 8, 19:20 UTC1h 55m
2026-07-08 SHT9G EDI → LHR Jul 8, 13:20 UTCJul 8, 14:25 UTC1h 5m
2026-07-08 SHT8Y - Jul 8, 10:50 UTCJul 8, 11:50 UTC1h 0m
2026-07-08 BAW84NT WAW → LHR Jul 8, 06:35 UTCJul 8, 08:55 UTC2h 20m
2026-07-07 BAW846W - Jul 7, 20:30 UTCJul 7, 22:20 UTC1h 50m
2026-07-07 SHT5V - Jul 7, 13:35 UTCJul 7, 14:30 UTC55m
2026-07-07 SHT4C - Jul 7, 11:15 UTCJul 7, 12:10 UTC55m
2026-07-05 BAW453 IBZ → LHR Jul 5, 16:20 UTCJul 5, 18:30 UTC2h 10m
2026-07-05 BAW452 - Jul 5, 13:05 UTCJul 5, 15:00 UTC1h 55m
2026-07-05 BAW7WN VIE → LHR Jul 5, 09:40 UTCJul 5, 11:35 UTC1h 55m
2026-07-05 BAW722 - Jul 5, 06:15 UTCJul 5, 08:00 UTC1h 45m
2026-07-04 BAW725 VIE → LHR Jul 4, 17:00 UTCJul 4, 18:50 UTC1h 50m
2026-07-04 BAW72J - Jul 4, 14:20 UTCJul 4, 15:55 UTC1h 35m
2026-07-04 BAW7WN VIE → LHR Jul 4, 09:55 UTCJul 4, 12:00 UTC2h 5m
2026-07-04 BAW722 - Jul 4, 07:00 UTCJul 4, 08:40 UTC1h 40m
2026-07-03 BAW409 VLC → LHR Jul 3, 18:30 UTCJul 3, 20:30 UTC2h 0m
2026-07-03 BAW408 LHR → VLC Jul 3, 15:25 UTCJul 3, 17:20 UTC1h 55m
2026-07-03 BAW863Z BUD → LHR Jul 3, 11:10 UTCJul 3, 13:30 UTC2h 20m
2026-07-03 BAW862U - Jul 3, 07:45 UTCJul 3, 09:35 UTC1h 50m
2026-07-02 BAW997T - Jul 2, 19:15 UTCJul 2, 20:50 UTC1h 35m
2026-07-02 BAW996G LHR → BER Jul 2, 16:40 UTCJul 2, 18:00 UTC1h 20m
2026-07-02 BAW511 FAO → LHR Jul 2, 12:30 UTCJul 2, 14:55 UTC2h 25m
2026-07-02 BAW510 - Jul 2, 08:25 UTCJul 2, 10:40 UTC2h 15m
2026-07-02 SHT5N - Jul 2, 05:45 UTCJul 2, 06:35 UTC50m
2026-07-01 SHT4YL - Jul 1, 18:50 UTCJul 1, 19:45 UTC55m

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?
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 406A3D, octal 20065075, decimal 4,221,501.
What flights does 406A3D operate?
Mode-S 406A3D has broadcast 20 distinct callsigns, including BAW717, BAW716, BAW654, BAW617, BAW616.