Apparatus

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sensors Mode-S transponder

4009C5

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EUUH · AIRBUS A-320

Hex
4009C5
Octal
20004705
Decimal
4,196,805
Country
GB
Tail
G-EUUH
Type
A320
No current signal · last broadcast 1h ago
Flights observed
234
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4009C5.

Country allocation

The ICAO 24-bit address 4009C5 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
BAW789 British Airways 3 2026-04-30
BAW788 British Airways 3 2026-04-30
BAW744 - 3 2026-04-13
BAW727G British Airways 3 2026-04-27
BAW726P British Airways 3 2026-04-27
BAW601Y - 3 2026-04-13
SHT7B - 2 2026-05-10
SHT6U - 2 2026-05-09
SHT5R - 2 2026-05-02
SHT4H - 2 2026-05-02
SHT13E - 2 2026-05-22
SHT13C - 2 2026-04-17
SHT12K - 2 2026-05-22
SHT12H - 2 2026-04-17
BAW925 British Airways 2 2026-05-28
BAW924 British Airways 2 2026-05-27
BAW911U British Airways 2 2026-05-27
BAW910N British Airways 2 2026-05-26
BAW88LP British Airways 2 2026-04-28
BAW889 British Airways 2 2026-04-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BAW531 SPU → LHR May 30, 06:35 UTCMay 30, 07:15 UTC40m
2026-05-29 BAW530 LHR → SPU May 29, 18:10 UTCMay 29, 20:15 UTC2h 5m
2026-05-29 BAW553C FCO → LHR May 29, 14:25 UTCMay 29, 16:30 UTC2h 6m
2026-05-29 BAW552F LHR → FCO May 29, 10:15 UTCMay 29, 12:15 UTC2h 0m
2026-05-29 BAW379 TLS → LHR May 29, 05:20 UTCMay 29, 08:15 UTC2h 55m
2026-05-28 BAW378 LHR → TLS May 28, 18:50 UTCMay 28, 21:05 UTC2h 15m
2026-05-28 BAW387 MRS → LHR May 28, 15:00 UTCMay 28, 15:50 UTC50m
2026-05-28 BAW386 LHR → BRU May 28, 12:45 UTCMay 28, 13:25 UTC40m
2026-05-28 SHT3R MAN → LHR May 28, 10:20 UTCMay 28, 11:15 UTC55m
2026-05-28 SHT2P - May 28, 08:10 UTCMay 28, 08:40 UTC30m
2026-05-28 BAW925 NUE → LHR May 28, 05:40 UTCMay 28, 06:40 UTC1h 0m
2026-05-27 BAW924 LHR → HAJ May 27, 18:05 UTCMay 27, 18:55 UTC50m
2026-05-27 BAW719 ZRH → LHR May 27, 13:10 UTCMay 27, 16:40 UTC3h 30m
2026-05-27 BAW718 LHR → ZRH May 27, 08:45 UTCMay 27, 11:35 UTC2h 50m
2026-05-27 BAW911U FRA → LHR May 27, 04:55 UTCMay 27, 06:15 UTC1h 20m
2026-05-26 BAW910N LHR → FRA May 26, 19:15 UTCMay 26, 20:20 UTC1h 5m
2026-05-26 SHT15B JER → LHR May 26, 16:20 UTCMay 26, 16:55 UTC35m
2026-05-26 SHT14G - May 26, 14:45 UTCMay 26, 15:20 UTC35m
2026-05-26 BAW45EM MAD → LHR May 26, 10:29 UTCMay 26, 12:14 UTC1h 45m
2026-05-26 BAW4MJ LHR → MAD May 26, 07:10 UTCMay 26, 09:15 UTC2h 5m
2026-05-25 BAW58XP MXP → LHR May 25, 18:00 UTCMay 25, 19:30 UTC1h 30m
2026-05-25 BAW586M LHR → LIN May 25, 14:50 UTCMay 25, 16:25 UTC1h 35m
2026-05-25 BAW571 MXP → LHR May 25, 11:55 UTCMay 25, 13:20 UTC1h 25m
2026-05-25 BAW7RL LHR → LIN May 25, 08:55 UTCMay 25, 10:25 UTC1h 30m
2026-05-25 BAW315 CDG → LHR May 25, 06:05 UTCMay 25, 06:55 UTC50m
2026-05-24 BAW314S LHR → CDG May 24, 20:25 UTCMay 24, 21:05 UTC40m
2026-05-24 BAW453 IBZ → LHR May 24, 16:45 UTCMay 24, 18:45 UTC2h 0m
2026-05-24 BAW452 LHR → IBZ May 24, 13:40 UTCMay 24, 15:40 UTC2h 0m
2026-05-24 BAW525 FLR → LHR May 24, 09:50 UTCMay 24, 11:55 UTC2h 5m
2026-05-24 BAW524 LHR → FLR May 24, 05:50 UTCMay 24, 08:15 UTC2h 25m
2026-05-23 BAW667 CHQ → LHR May 23, 12:40 UTCMay 23, 16:05 UTC3h 25m
2026-05-23 BAW66K LHR → JMK May 23, 07:55 UTCMay 23, 11:10 UTC3h 15m
2026-05-22 BAW579V VCE → LHR May 22, 18:20 UTCMay 22, 19:55 UTC1h 35m
2026-05-22 BAW578 LHR → VCE May 22, 15:35 UTCMay 22, 17:05 UTC1h 30m
2026-05-22 SHT13E NCL → LHR May 22, 10:10 UTCMay 22, 11:00 UTC50m
2026-05-22 SHT12K - May 22, 08:05 UTCMay 22, 08:45 UTC40m
2026-05-22 BAW99C BER → LHR May 22, 05:00 UTCMay 22, 06:30 UTC1h 30m
2026-05-21 BAW998 LHR → BER May 21, 18:50 UTCMay 21, 20:15 UTC1h 25m
2026-05-21 SHT7Y GLA → LHR May 21, 15:45 UTCMay 21, 16:45 UTC1h 0m
2026-05-21 SHT6E - May 21, 13:35 UTCMay 21, 14:30 UTC55m
2026-05-21 BAW541A BLQ → LHR May 21, 09:45 UTCMay 21, 11:40 UTC1h 55m
2026-05-21 BAW5B LHR → BLQ May 21, 06:45 UTCMay 21, 08:25 UTC1h 40m
2026-05-20 BAW391 BRU → LHR May 20, 19:35 UTCMay 20, 20:20 UTC45m
2026-05-20 BAW9CJ - May 20, 17:50 UTCMay 20, 18:35 UTC45m
2026-05-20 BAW735 GVA → LHR May 20, 14:05 UTCMay 20, 15:30 UTC1h 25m
2026-05-20 BAW734 LHR → GVA May 20, 11:40 UTCMay 20, 12:55 UTC1h 15m
2026-05-20 BAW61XM PMO → LHR May 20, 07:20 UTCMay 20, 09:25 UTC2h 5m
2026-05-19 BAW87PC LHR → PMO May 19, 18:20 UTCMay 19, 19:55 UTC1h 35m
2026-05-19 BAW817 CPH → LHR May 19, 15:10 UTCMay 19, 16:50 UTC1h 40m
2026-05-19 BAW816 LHR → CPH May 19, 12:10 UTCMay 19, 13:35 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-EUUH page for operator, model, and routing details .

Mode-S 4009C5 frequently asked

What is Mode-S code 4009C5?
4009C5 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EUUH.
Where is Mode-S 4009C5 registered?
Mode-S code 4009C5 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 4009C5 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4009C5, octal 20004705, decimal 4,196,805.
What flights does 4009C5 operate?
Mode-S 4009C5 has broadcast 20 distinct callsigns, including BAW789, BAW788, BAW744, BAW727G, BAW726P.