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
No current signal · last broadcast 1h ago
Flights observed
542
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

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 - 13 2026-07-12
EZY18YZ - 13 2026-07-12
EZY58KW easyJet 7 2026-06-10
EZY14HN easyJet 7 2026-06-10
EZY94ZH - 6 2026-06-16
EZY825U - 6 2026-06-16
EZY63BG - 6 2026-07-05
EZY59WD - 6 2026-07-05
EZY49TF easyJet 6 2026-06-16
EZY46HL - 6 2026-07-02
EZY42JA - 6 2026-06-25
EZY25CU - 6 2026-07-02
EZY16VL - 6 2026-06-16
EZY96QE - 5 2026-07-06
EZY95PL - 5 2026-07-01
EZY78DG - 5 2026-07-14
EZY54ED - 5 2026-07-06
EZY54AH easyJet 5 2026-05-31
EZY45ZD - 5 2026-05-31
EZY39QX easyJet 5 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 EZY82NK - Jul 14, 21:15 UTCJul 14, 22:45 UTC1h 29m
2026-07-14 EZY65PM LGW → NCE Jul 14, 18:25 UTCJul 14, 20:10 UTC1h 45m
2026-07-14 EZY898 NQY → LGW Jul 14, 16:30 UTCJul 14, 17:15 UTC45m
2026-07-14 EZY897 LGW → NQY Jul 14, 14:40 UTCJul 14, 15:25 UTC45m
2026-07-14 EZY39HL LIN → LGW Jul 14, 11:40 UTCJul 14, 13:20 UTC1h 40m
2026-07-14 EZY41PQ LGW → LIN Jul 14, 09:15 UTCJul 14, 10:45 UTC1h 30m
2026-07-14 EZY78DG - Jul 14, 06:25 UTCJul 14, 07:55 UTC1h 30m
2026-07-13 EZY268A - Jul 13, 18:35 UTCJul 13, 19:45 UTC1h 10m
2026-07-13 EZY59NU - Jul 13, 14:45 UTCJul 13, 17:20 UTC2h 35m
2026-07-13 EZY36DH LGW → ALC Jul 13, 11:35 UTCJul 13, 13:45 UTC2h 10m
2026-07-13 EZY91HN - Jul 13, 08:50 UTCJul 13, 10:05 UTC1h 15m
2026-07-13 EZY56UC LGW → GVA Jul 13, 06:20 UTCJul 13, 07:35 UTC1h 15m
2026-07-12 EZY93HL - Jul 12, 19:40 UTCJul 12, 20:20 UTC40m
2026-07-12 EZY57AF LGW → CDG Jul 12, 17:45 UTCJul 12, 18:25 UTC40m
2026-07-12 EZY18YZ ABZ → LGW Jul 12, 14:50 UTCJul 12, 16:25 UTC1h 35m
2026-07-12 EZY258Y LGW → ABZ Jul 12, 11:45 UTCJul 12, 12:55 UTC1h 10m
2026-07-12 EZY86HC EDI → LGW Jul 12, 09:25 UTCJul 12, 10:30 UTC1h 5m
2026-07-12 EZY634M LGW → EDI Jul 12, 07:31 UTCJul 12, 08:30 UTC1h 0m
2026-07-11 EZY62HN - Jul 11, 21:55 UTCJul 11, 23:55 UTC2h 0m
2026-07-11 EZY8345 MXP → OLB Jul 11, 19:30 UTCJul 11, 20:30 UTC1h 0m
2026-07-11 EZY13LG LGW → MXP Jul 11, 13:25 UTCJul 11, 15:50 UTC2h 25m
2026-07-11 EZY12EU - Jul 11, 09:40 UTCJul 11, 11:45 UTC2h 5m
2026-07-11 EZY73CF - Jul 11, 05:45 UTCJul 11, 07:45 UTC2h 0m
2026-07-09 EZY8308 MXP → LGW Jul 9, 20:25 UTCJul 9, 21:45 UTC1h 20m
2026-07-09 EZY8307 LGW → MXP Jul 9, 17:45 UTCJul 9, 19:10 UTC1h 25m
2026-07-09 EZY18YZ ABZ → LGW Jul 9, 15:05 UTCJul 9, 16:20 UTC1h 15m
2026-07-09 EZY258Y LGW → ABZ Jul 9, 12:45 UTCJul 9, 13:55 UTC1h 10m
2026-07-09 EZY82GA CPH → LGW Jul 9, 09:15 UTCJul 9, 10:45 UTC1h 30m
2026-07-09 EZY21YK LGW → CPH Jul 9, 06:45 UTCJul 9, 08:15 UTC1h 30m
2026-07-08 EZY12EU OLB → LGW Jul 8, 16:25 UTCJul 8, 18:25 UTC2h 0m
2026-07-08 EZY73CF LGW → OLB Jul 8, 13:10 UTCJul 8, 15:10 UTC2h 0m
2026-07-08 EZY28KE - Jul 8, 10:05 UTCJul 8, 11:45 UTC1h 40m
2026-07-08 EZY38XR LGW → REU Jul 8, 07:15 UTCJul 8, 09:05 UTC1h 50m
2026-07-07 EZY48VW OLB → LGW Jul 7, 19:10 UTCJul 7, 21:15 UTC2h 5m
2026-07-07 EZY63AE LGW → OLB Jul 7, 16:05 UTCJul 7, 18:05 UTC2h 0m
2026-07-07 EZY79NW - Jul 7, 13:25 UTCJul 7, 14:25 UTC1h 0m
2026-07-07 EZY298K - Jul 7, 11:25 UTCJul 7, 12:25 UTC1h 0m
2026-07-07 EZY37PL - Jul 7, 09:25 UTCJul 7, 10:20 UTC55m
2026-07-07 EZY17HW - Jul 7, 07:35 UTCJul 7, 08:30 UTC55m
2026-07-06 EZY47ND PVK → LGW Jul 6, 15:00 UTCJul 6, 22:00 UTC7h 0m
2026-07-06 EZY38KQ - Jul 6, 12:10 UTCJul 6, 13:10 UTC1h 0m
2026-07-06 EZY71LY - Jul 6, 10:15 UTCJul 6, 11:10 UTC55m
2026-07-06 EZY96QE DUS → LGW Jul 6, 07:45 UTCJul 6, 08:45 UTC1h 0m
2026-07-06 EZY54ED LGW → DUS Jul 6, 05:25 UTCJul 6, 06:25 UTC1h 0m
2026-07-05 EZY62MU BUD → LGW Jul 5, 21:10 UTCJul 5, 23:25 UTC2h 15m
2026-07-05 EZY35CH LGW → BUD Jul 5, 18:15 UTCJul 5, 20:10 UTC1h 55m
2026-07-05 EZY59WD - Jul 5, 16:05 UTCJul 5, 17:00 UTC55m
2026-07-05 EZY63BG LGW → AMS Jul 5, 13:45 UTCJul 5, 14:35 UTC50m
2026-07-05 EZY61TU MRS → LGW Jul 5, 10:50 UTCJul 5, 12:30 UTC1h 40m
2026-07-05 EZY53JV LGW → MRS Jul 5, 08:15 UTCJul 5, 09:45 UTC1h 30m

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?
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 400FDB, octal 20007733, decimal 4,198,363.
What flights does 400FDB operate?
Mode-S 400FDB has broadcast 20 distinct callsigns, including EZY258Y, EZY18YZ, EZY58KW, EZY14HN, EZY94ZH.