Apparatus

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sensors Mode-S transponder

408320

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-DKNR · AERO L-159 Albatros 2

Hex
408320
Octal
20101440
Decimal
4,227,872
Country
GB
Tail
G-DKNR
Type
L159
No current signal · last broadcast 4d ago
Flights observed
75
Distinct callsigns
20
Country
GB
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 408320.

Country allocation

The ICAO 24-bit address 408320 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
SAVAGE11 - 10 2026-07-03
SAVAGE91 - 8 2026-06-10
GONZO21 - 6 2026-07-01
COUGAR11 - 5 2026-05-12
GONZO11 - 4 2026-06-16
SAVAGE21 - 3 2026-05-19
PIRATE11 - 3 2026-07-06
GONZO91 - 3 2026-06-25
COUGAR91 - 3 2026-07-07
COUGAR12 - 3 2026-07-08
PIRATE71 - 2 2026-06-08
PIRATE13 - 2 2026-05-21
GONZO92 - 2 2026-06-24
COUGAR21 - 2 2026-06-17
COUGAR13 - 2 2026-07-09
SAVAVE12 - 1 2026-07-08
SAVAGE94 - 1 2026-05-07
SAVAGE82 - 1 2026-06-22
SAVAGE41 - 1 2026-06-17
SAVAGE32 - 1 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 COUGAR13 MME → MME Jul 9, 20:45 UTCJul 9, 22:00 UTC1h 15m
2026-07-09 COUGAR13 MME → MME Jul 9, 16:55 UTCJul 9, 18:45 UTC1h 50m
2026-07-08 COUGAR12 - Jul 8, 20:55 UTCJul 8, 22:40 UTC1h 45m
2026-07-08 SAVAVE12 - Jul 8, 14:45 UTCJul 8, 16:30 UTC1h 45m
2026-07-07 COUGAR91 - Jul 7, 16:50 UTCJul 7, 18:45 UTC1h 55m
2026-07-06 COUGAR91 - Jul 6, 20:50 UTCJul 6, 22:15 UTC1h 25m
2026-07-06 PIRATE11 - Jul 6, 16:35 UTCJul 6, 18:00 UTC1h 25m
2026-07-03 SAVAGE11 - Jul 3, 10:55 UTCJul 3, 12:25 UTC1h 30m
2026-07-01 GONZO21 - Jul 1, 08:40 UTCJul 1, 09:50 UTC1h 10m
2026-06-30 COUGAR12 - Jun 30, 07:45 UTCJun 30, 08:55 UTC1h 10m
2026-06-29 GONZO21 - Jun 29, 14:50 UTCJun 29, 16:00 UTC1h 10m
2026-06-29 FRA63 - Jun 29, 09:00 UTCJun 29, 10:04 UTC1h 5m
2026-06-26 COUGAR01 - Jun 26, 15:25 UTCJun 26, 16:35 UTC1h 10m
2026-06-25 GONZO91 - Jun 25, 13:50 UTCJun 25, 15:29 UTC1h 40m
2026-06-24 GONZO92 MME → MME Jun 24, 10:55 UTCJun 24, 12:14 UTC1h 20m
2026-06-23 GONZO21 - Jun 23, 09:59 UTCJun 23, 10:59 UTC1h 0m
2026-06-22 PIRATE12 - Jun 22, 14:55 UTCJun 22, 16:20 UTC1h 25m
2026-06-22 SAVAGE82 - Jun 22, 11:14 UTCJun 22, 12:49 UTC1h 35m
2026-06-18 SAVAGE32 - Jun 18, 13:50 UTCJun 18, 15:15 UTC1h 25m
2026-06-18 SAVAGE11 - Jun 18, 08:45 UTCJun 18, 10:20 UTC1h 35m
2026-06-17 SAVAGE41 MME → MME Jun 17, 14:40 UTCJun 17, 16:10 UTC1h 30m
2026-06-17 COUGAR21 - Jun 17, 08:50 UTCJun 17, 09:55 UTC1h 5m
2026-06-16 FRA55 MME → MME Jun 16, 17:24 UTCJun 16, 18:50 UTC1h 25m
2026-06-16 GONZO11 - Jun 16, 13:50 UTCJun 16, 15:09 UTC1h 20m
2026-06-16 SAVAGE11 - Jun 16, 07:40 UTCJun 16, 09:10 UTC1h 30m
2026-06-15 PIRATE93 MME → MME Jun 15, 13:00 UTCJun 15, 14:24 UTC1h 25m
2026-06-15 SAVAGE11 - Jun 15, 08:40 UTCJun 15, 10:05 UTC1h 25m
2026-06-11 COUGAR61 MME → MME Jun 11, 15:50 UTCJun 11, 17:40 UTC1h 50m
2026-06-10 SAVAGE91 - Jun 10, 21:00 UTCJun 10, 22:20 UTC1h 20m
2026-06-09 SAVAGE91 - Jun 9, 21:10 UTCJun 9, 22:15 UTC1h 5m
2026-06-09 PIRATE11 - Jun 9, 14:45 UTCJun 9, 15:50 UTC1h 5m
2026-06-08 PIRATE71 - Jun 8, 18:20 UTCJun 8, 19:25 UTC1h 5m
2026-06-08 GONZO93 - Jun 8, 12:45 UTCJun 8, 14:20 UTC1h 35m
2026-06-04 SAVAGE91 - Jun 4, 10:45 UTCJun 4, 12:05 UTC1h 20m
2026-06-03 SAVAGE91 MME → MME Jun 3, 10:50 UTCJun 3, 12:10 UTC1h 20m
2026-05-29 SAVAGE91 - May 29, 09:55 UTCMay 29, 11:15 UTC1h 20m
2026-05-28 SAVAGE11 - May 28, 13:25 UTCMay 28, 14:50 UTC1h 25m
2026-05-28 PIRATE11 - May 28, 09:40 UTCMay 28, 11:20 UTC1h 40m
2026-05-27 GONZO92 - May 27, 09:55 UTCMay 27, 11:35 UTC1h 40m
2026-05-21 SAVAGE13 - May 21, 14:50 UTCMay 21, 15:55 UTC1h 5m
2026-05-21 PIRATE13 - May 21, 09:35 UTCMay 21, 11:15 UTC1h 40m
2026-05-20 PIRATE13 - May 20, 09:30 UTCMay 20, 11:05 UTC1h 35m
2026-05-19 SAVAGE21 - May 19, 13:45 UTCMay 19, 15:10 UTC1h 25m
2026-05-19 SAVAGE91 - May 19, 08:55 UTCMay 19, 10:15 UTC1h 20m
2026-05-18 PIRATE71 - May 18, 13:45 UTCMay 18, 14:50 UTC1h 5m
2026-05-15 COUGAR94 MME → MME May 15, 10:55 UTCMay 15, 12:10 UTC1h 15m
2026-05-14 COUGAR12 MME → MME May 14, 11:05 UTCMay 14, 12:10 UTC1h 5m
2026-05-13 GONZO91 - May 13, 11:10 UTCMay 13, 11:25 UTC15m
2026-05-13 GONZO91 - May 13, 10:05 UTCMay 13, 10:20 UTC15m
2026-05-12 COUGAR11 MME → MME May 12, 09:45 UTCMay 12, 11:20 UTC1h 35m

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

Mode-S 408320 frequently asked

What is Mode-S code 408320?
408320 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-DKNR.
Where is Mode-S 408320 registered?
Mode-S code 408320 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 408320 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408320, octal 20101440, decimal 4,227,872.
What flights does 408320 operate?
Mode-S 408320 has broadcast 20 distinct callsigns, including SAVAGE11, SAVAGE91, GONZO21, COUGAR11, GONZO11.