sensors Mode-S transponder

400FDB

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EZBJ · AIRBUS A-319

Hex
400FDB
Octal
20007733
Decimal
4,198,363
Country
GB
Tail
G-EZBJ
Type
A319
Transponder active on ground
Flights observed
609
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 22:25 UTC

Last known position

Most recent position reported by Mode-S 400FDB.

Country allocation

The ICAO 24-bit address 400FDB 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
EZY258Y easyJet 14 2026-07-22
EZY18YZ easyJet 14 2026-07-22
EZY825U easyJet 8 2026-07-23
EZY49TF easyJet 8 2026-07-23
EZY42JA easyJet 8 2026-07-21
EZY14HN easyJet 8 2026-07-22
EZY58KW easyJet 7 2026-06-10
EZY94ZH - 6 2026-06-16
EZY63ZD - 6 2026-07-21
EZY63BG - 6 2026-07-05
EZY59WD - 6 2026-07-05
EZY46HL - 6 2026-07-02
EZY25CU - 6 2026-07-02
EZY16VL - 6 2026-06-16
EZY96QE - 5 2026-07-06
EZY95PL - 5 2026-07-01
EZY93HL easyJet 5 2026-07-16
EZY87KZ easyJet 5 2026-07-24
EZY78DG - 5 2026-07-14
EZY57AF - 5 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZY51GZ MXP → LGW Jul 26, 20:45 UTCJul 26, 22:15 UTC1h 30m
2026-07-26 EZY63HB CDG → BCN Jul 26, 18:20 UTCJul 26, 19:40 UTC1h 20m
2026-07-26 EZY34YK JER → LGW Jul 26, 16:15 UTCJul 26, 16:55 UTC40m
2026-07-26 EZY84MF LGW → JER Jul 26, 14:50 UTCJul 26, 15:25 UTC35m
2026-07-26 EZY46AJ GLA → GVA Jul 26, 11:45 UTCJul 26, 13:50 UTC2h 5m
2026-07-26 EZY67FY LTN → TFS Jul 26, 08:00 UTCJul 26, 10:10 UTC2h 10m
2026-07-25 EZY8353 LGW → BDS Jul 25, 18:45 UTCJul 25, 20:10 UTC1h 25m
2026-07-25 EZY8354 VCE → LGW Jul 25, 16:15 UTCJul 25, 17:40 UTC1h 25m
2026-07-25 EZY79NW MAN → FCO Jul 25, 13:30 UTCJul 25, 14:25 UTC55m
2026-07-25 EZY298K LGW → BHD Jul 25, 11:10 UTCJul 25, 12:10 UTC1h 0m
2026-07-25 EZY67LM ACE → LTN Jul 25, 08:55 UTCJul 25, 10:05 UTC1h 10m
2026-07-25 EZY25XH MAN → CTA Jul 25, 06:30 UTCJul 25, 07:40 UTC1h 10m
2026-07-24 EZY17JK PRG → LGW Jul 24, 19:55 UTCJul 24, 21:30 UTC1h 35m
2026-07-24 EZY68XB LGW → JER Jul 24, 17:35 UTCJul 24, 19:05 UTC1h 30m
2026-07-24 EZY87KZ EDI → LGW Jul 24, 15:00 UTCJul 24, 16:20 UTC1h 20m
2026-07-24 EZY576N LGW → EDI Jul 24, 12:55 UTCJul 24, 13:55 UTC1h 0m
2026-07-24 EZY82JC KRK → LGW Jul 24, 09:10 UTCJul 24, 11:25 UTC2h 15m
2026-07-24 EZY75DM LGW → KRK Jul 24, 06:10 UTCJul 24, 08:10 UTC2h 0m
2026-07-23 EZY766 BHD → LGW Jul 23, 18:45 UTCJul 23, 19:45 UTC1h 0m
2026-07-23 EZY756 LGW → BHD Jul 23, 16:50 UTCJul 23, 17:50 UTC1h 0m
2026-07-23 EZY49TF LPL → CDG Jul 23, 14:05 UTCJul 23, 15:30 UTC1h 25m
2026-07-23 EZY825U LGW → INV Jul 23, 11:40 UTCJul 23, 12:50 UTC1h 10m
2026-07-23 EZY45LQ LGW → NCE Jul 23, 08:30 UTCJul 23, 10:30 UTC2h 0m
2026-07-23 EZY95NK LGW → PUY Jul 23, 05:55 UTCJul 23, 07:35 UTC1h 40m
2026-07-22 EZY91QH EDI → LGW Jul 22, 21:45 UTCJul 22, 22:55 UTC1h 10m
2026-07-22 EZY959N MAN → BFS Jul 22, 19:20 UTCJul 22, 20:25 UTC1h 5m
2026-07-22 EZY18YZ LTN → AMS Jul 22, 16:50 UTCJul 22, 18:10 UTC1h 20m
2026-07-22 EZY258Y LGW → ABZ Jul 22, 14:05 UTCJul 22, 15:15 UTC1h 10m
2026-07-22 EZY14HN BIQ → LGW Jul 22, 11:10 UTCJul 22, 12:50 UTC1h 40m
2026-07-21 EZY63ZD AMS → LGW Jul 21, 19:15 UTCJul 21, 20:00 UTC45m
2026-07-21 EZY42JA LGW → AMS Jul 21, 17:25 UTCJul 21, 18:15 UTC50m
2026-07-21 EZY28KU - Jul 21, 14:30 UTCJul 21, 16:20 UTC1h 50m
2026-07-21 EZY48VN MAN → CDG Jul 21, 11:40 UTCJul 21, 13:25 UTC1h 45m
2026-07-21 EZY95BM - Jul 21, 08:25 UTCJul 21, 10:10 UTC1h 45m
2026-07-21 EZY45YM LGW → VRN Jul 21, 05:50 UTCJul 21, 07:20 UTC1h 30m
2026-07-20 EZY63ZD - Jul 20, 19:45 UTCJul 20, 20:25 UTC40m
2026-07-20 EZY42JA LGW → AMS Jul 20, 17:35 UTCJul 20, 18:20 UTC45m
2026-07-20 EZY38EN LRH → LGW Jul 20, 14:55 UTCJul 20, 16:05 UTC1h 10m
2026-07-20 EZY78JB LGW → LRH Jul 20, 12:30 UTCJul 20, 13:25 UTC55m
2026-07-20 EZY83GV VLC → LGW Jul 20, 08:35 UTCJul 20, 10:40 UTC2h 5m
2026-07-20 EZY39WY LGW → FCO Jul 20, 05:40 UTCJul 20, 07:30 UTC1h 50m
2026-07-19 EZY8366 MXP → LGW Jul 19, 20:00 UTCJul 19, 21:30 UTC1h 30m
2026-07-19 EZY59VW LPA → LGW Jul 19, 17:15 UTCJul 19, 18:45 UTC1h 30m
2026-07-19 EZY49TF LPL → CDG Jul 19, 14:20 UTCJul 19, 15:40 UTC1h 20m
2026-07-19 EZY825U LGW → INV Jul 19, 11:40 UTCJul 19, 12:55 UTC1h 15m
2026-07-19 EZY38KQ - Jul 19, 08:55 UTCJul 19, 09:50 UTC55m
2026-07-19 EZY71LY LGW → NTE Jul 19, 07:00 UTCJul 19, 07:55 UTC55m
2026-07-18 EZY84BE IBZ → LGW Jul 18, 17:00 UTCJul 18, 18:55 UTC1h 55m
2026-07-18 EZY32ZV LGW → IBZ Jul 18, 13:55 UTCJul 18, 16:00 UTC2h 5m
2026-07-18 EZY91XB - Jul 18, 10:35 UTCJul 18, 12:40 UTC2h 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-EZBJ page for operator, model, and routing details .

Mode-S 400FDB frequently asked

What is Mode-S code 400FDB?
400FDB is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EZBJ.
Where is Mode-S 400FDB registered?
Mode-S code 400FDB 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 400FDB broadcasting right now?
Mode-S 400FDB is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400FDB, octal 20007733, decimal 4,198,363.
What flights does 400FDB operate?
Mode-S 400FDB has broadcast 20 distinct callsigns, including EZY258Y, EZY18YZ, EZY825U, EZY49TF, EZY42JA.