Apparatus

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sensors Mode-S transponder

400F2B

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-CDZT · BEECH 200 Super King Air

Hex
400F2B
Octal
20007453
Decimal
4,198,187
Country
GB
Tail
G-CDZT
Type
BE20
No current signal · last broadcast 24d ago
Flights observed
159
Distinct callsigns
20
Country
GB
Last broadcast
24d ago

Last known position

Most recent position reported by Mode-S 400F2B.

Country allocation

The ICAO 24-bit address 400F2B 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
REV902 - 38 2026-06-19
REV905 - 35 2026-06-20
REV903 - 32 2026-06-18
REV904 - 31 2026-06-19
REV1ZT - 7 2026-04-15
REV2140 - 2 2026-05-19
REV991P - 1 2026-04-20
REV991B - 1 2026-04-21
REV991A - 1 2026-04-21
REV986P - 1 2026-04-14
REV986 - 1 2026-04-15
REV982A - 1 2026-04-24
REV981 - 1 2026-04-19
REV923P - 1 2026-04-17
REV923B - 1 2026-04-18
REV923A - 1 2026-04-18
REV920P - 1 2026-04-24
REV902P - 1 2026-04-22
REV821 - 1 2026-05-19
REV214P - 1 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-20 REV905 EMA → EXT Jun 20, 08:05 UTCJun 20, 08:49 UTC45m
2026-06-19 REV905 - Jun 19, 18:54 UTCJun 19, 20:19 UTC1h 25m
2026-06-19 REV904 - Jun 19, 12:29 UTCJun 19, 12:39 UTC10m
2026-06-19 REV902 EMA → GCI Jun 19, 10:59 UTCJun 19, 11:59 UTC1h 0m
2026-06-18 REV905 - Jun 18, 19:35 UTCJun 18, 20:30 UTC55m
2026-06-18 REV903 JER → GCI Jun 18, 18:55 UTCJun 18, 19:00 UTC5m
2026-06-18 REV902 EMA → JER Jun 18, 11:00 UTCJun 18, 12:40 UTC1h 40m
2026-06-17 REV905 - Jun 17, 19:30 UTCJun 17, 20:25 UTC55m
2026-06-17 REV903 JER → GCI Jun 17, 18:55 UTCJun 17, 19:00 UTC5m
2026-06-17 REV904 GCI → JER Jun 17, 12:30 UTCJun 17, 12:45 UTC15m
2026-06-17 REV902 EMA → GCI Jun 17, 11:00 UTCJun 17, 12:00 UTC1h 0m
2026-06-16 REV905 - Jun 16, 19:25 UTCJun 16, 20:25 UTC1h 1m
2026-06-16 REV903 JER → GCI Jun 16, 18:50 UTCJun 16, 19:00 UTC10m
2026-06-16 REV904 - Jun 16, 12:25 UTCJun 16, 12:45 UTC20m
2026-06-16 REV902 EMA → GCI Jun 16, 10:49 UTCJun 16, 11:49 UTC1h 0m
2026-06-15 REV905 - Jun 15, 19:25 UTCJun 15, 20:30 UTC1h 5m
2026-06-15 REV903 - Jun 15, 18:45 UTCJun 15, 18:55 UTC10m
2026-06-15 REV904 - Jun 15, 12:19 UTCJun 15, 12:35 UTC15m
2026-06-15 REV902 EMA → GCI Jun 15, 10:50 UTCJun 15, 11:49 UTC1h 0m
2026-06-12 REV905 GCI → EMA Jun 12, 19:25 UTCJun 12, 20:30 UTC1h 5m
2026-06-12 REV903 - Jun 12, 18:50 UTCJun 12, 19:00 UTC10m
2026-06-12 REV904 - Jun 12, 12:25 UTCJun 12, 12:40 UTC15m
2026-06-12 REV902 EMA → GCI Jun 12, 10:50 UTCJun 12, 11:45 UTC55m
2026-06-11 REV905 - Jun 11, 19:25 UTCJun 11, 20:30 UTC1h 5m
2026-06-11 REV903 JER → GCI Jun 11, 18:50 UTCJun 11, 19:00 UTC10m
2026-06-11 REV904 - Jun 11, 12:20 UTCJun 11, 12:35 UTC15m
2026-06-11 REV902 EMA → GCI Jun 11, 10:55 UTCJun 11, 11:50 UTC55m
2026-06-10 REV905 - Jun 10, 19:35 UTCJun 10, 20:40 UTC1h 5m
2026-06-10 REV903 - Jun 10, 18:55 UTCJun 10, 19:00 UTC5m
2026-06-10 REV904 - Jun 10, 12:40 UTCJun 10, 12:55 UTC15m
2026-06-10 REV902 EMA → GCI Jun 10, 11:05 UTCJun 10, 12:00 UTC55m
2026-06-09 REV905 - Jun 9, 19:25 UTCJun 9, 20:25 UTC1h 0m
2026-06-09 REV903 JER → GCI Jun 9, 18:55 UTCJun 9, 19:00 UTC5m
2026-06-09 REV904 - Jun 9, 12:25 UTCJun 9, 12:30 UTC5m
2026-06-09 REV902 EMA → GCI Jun 9, 10:55 UTCJun 9, 11:55 UTC1h 0m
2026-06-08 REV905 - Jun 8, 19:35 UTCJun 8, 20:35 UTC1h 0m
2026-06-08 REV903 JER → GCI Jun 8, 18:55 UTCJun 8, 19:05 UTC10m
2026-06-08 REV904 GCI → JER Jun 8, 12:35 UTCJun 8, 12:45 UTC10m
2026-06-08 REV902 - Jun 8, 10:50 UTCJun 8, 11:55 UTC1h 5m
2026-06-05 REV905 - Jun 5, 19:30 UTCJun 5, 20:30 UTC1h 0m
2026-06-05 REV903 - Jun 5, 18:55 UTCJun 5, 19:00 UTC5m
2026-06-05 REV902 EMA → JER Jun 5, 11:10 UTCJun 5, 12:40 UTC1h 30m
2026-06-04 REV905 - Jun 4, 19:25 UTCJun 4, 20:25 UTC1h 0m
2026-06-04 REV903 JER → GCI Jun 4, 18:50 UTCJun 4, 19:00 UTC10m
2026-06-04 REV904 - Jun 4, 12:30 UTCJun 4, 12:45 UTC15m
2026-06-04 REV902 - Jun 4, 11:00 UTCJun 4, 11:55 UTC55m
2026-06-03 REV905 - Jun 3, 19:25 UTCJun 3, 20:20 UTC55m
2026-06-03 REV903 JER → GCI Jun 3, 18:50 UTCJun 3, 19:00 UTC10m
2026-06-03 REV904 - Jun 3, 12:35 UTCJun 3, 12:45 UTC10m
2026-06-03 REV902 EMA → GCI Jun 3, 10:40 UTCJun 3, 11:45 UTC1h 5m

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

Mode-S 400F2B frequently asked

What is Mode-S code 400F2B?
400F2B is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-CDZT.
Where is Mode-S 400F2B registered?
Mode-S code 400F2B 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 400F2B broadcasting right now?
No active broadcast right now. Last signal was 24d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400F2B, octal 20007453, decimal 4,198,187.
What flights does 400F2B operate?
Mode-S 400F2B has broadcast 20 distinct callsigns, including REV902, REV905, REV903, REV904, REV1ZT.