Apparatus

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sensors Mode-S transponder

4078EF

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-UZMI · AIRBUS A-321neo

Hex
4078EF
Octal
20074357
Decimal
4,225,263
Country
GB
Tail
G-UZMI
Type
A21N
No current signal · last broadcast Jul 26, 20:35 UTC
Flights observed
443
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 20:35 UTC

Last known position

Most recent position reported by Mode-S 4078EF.

Country allocation

The ICAO 24-bit address 4078EF 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
EZY91YL easyJet 10 2026-07-23
EZY93RC - 8 2026-07-23
EZY72UC easyJet 7 2026-05-29
EZY42VZ - 7 2026-06-16
EZY29CT easyJet 7 2026-05-29
EZY35YP - 6 2026-06-29
EZY34YT - 6 2026-06-29
EZY64CA easyJet 5 2026-07-18
EZY52DQ - 5 2026-05-20
EZY39CB easyJet 5 2026-06-16
EZY35VW easyJet 5 2026-04-17
EZY34QL - 5 2026-07-18
EZY18PK easyJet 5 2026-04-17
EZY17VD easyJet 5 2026-06-04
EZY98KH - 4 2026-06-26
EZY91QY - 4 2026-06-26
EZY76EZ easyJet 4 2026-07-26
EZY74WG easyJet 4 2026-07-26
EZY69UC easyJet 4 2026-06-04
EZY62NY easyJet 4 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZY41KP BER → LTN Jul 26, 19:00 UTCJul 26, 20:35 UTC1h 35m
2026-07-26 EZY74WG AYT → LGW Jul 26, 13:15 UTCJul 26, 17:45 UTC4h 30m
2026-07-26 EZY76EZ LGW → LIN Jul 26, 08:05 UTCJul 26, 11:45 UTC3h 40m
2026-07-25 EZY35GL EDI → LGW Jul 25, 21:05 UTCJul 26, 00:30 UTC3h 25m
2026-07-25 EZY59YF LGW → ACE Jul 25, 16:25 UTCJul 25, 19:25 UTC3h 0m
2026-07-25 EZY27JP LPL → MLA Jul 25, 11:25 UTCJul 25, 13:55 UTC2h 30m
2026-07-25 EZY18JU LGW → DBV Jul 25, 08:00 UTCJul 25, 10:15 UTC2h 15m
2026-07-25 EZY8266 ZTH → LGW Jul 25, 03:05 UTCJul 25, 06:10 UTC3h 5m
2026-07-24 EZY8265 LGW → CFU Jul 24, 23:05 UTCJul 25, 02:05 UTC3h 0m
2026-07-24 EZY74WG AYT → LGW Jul 24, 14:25 UTCJul 24, 18:25 UTC4h 0m
2026-07-24 EZY76EZ LGW → LIN Jul 24, 09:10 UTCJul 24, 13:00 UTC3h 50m
2026-07-23 EZY56UT - Jul 23, 20:15 UTCJul 23, 22:20 UTC2h 5m
2026-07-23 EZY81TN RHO → EDI Jul 23, 17:05 UTCJul 23, 19:00 UTC1h 55m
2026-07-23 EZY91YL ACE → LGW Jul 23, 11:00 UTCJul 23, 14:15 UTC3h 15m
2026-07-23 EZY93RC - Jul 23, 05:30 UTCJul 23, 08:45 UTC3h 15m
2026-07-22 EZY94RL BUD → LGW Jul 22, 19:05 UTCJul 22, 21:25 UTC2h 20m
2026-07-22 EZY12YT BFS → LTN Jul 22, 16:20 UTCJul 22, 18:15 UTC1h 55m
2026-07-22 EZY81QG JTR → LGW Jul 22, 11:10 UTCJul 22, 14:50 UTC3h 40m
2026-07-21 EZY15JF LCA → LGW Jul 21, 21:00 UTCJul 22, 01:40 UTC4h 40m
2026-07-21 EZY34BL - Jul 21, 15:50 UTCJul 21, 19:45 UTC3h 55m
2026-07-21 EZY43KP EFL → LGW Jul 21, 10:25 UTCJul 21, 13:40 UTC3h 15m
2026-07-21 EZY82DN AGA → LGW Jul 21, 05:45 UTCJul 21, 08:55 UTC3h 10m
2026-07-20 EZY25CQ MLA → LGW Jul 20, 19:30 UTCJul 20, 22:20 UTC2h 50m
2026-07-20 EZY56ZC LGW → MLA Jul 20, 15:10 UTCJul 20, 17:50 UTC2h 40m
2026-07-20 EZY47JF LGW → LGW Jul 20, 06:10 UTCJul 20, 12:25 UTC6h 15m
2026-07-19 EZY56EJ KEF → LGW Jul 19, 21:50 UTCJul 19, 23:35 UTC1h 45m
2026-07-19 EZY41KP LGW → VCE Jul 19, 19:10 UTCJul 19, 20:45 UTC1h 35m
2026-07-19 EZY8454 GNB → LGW Jul 19, 16:20 UTCJul 19, 17:40 UTC1h 20m
2026-07-19 EZY35QH LGW → BOD Jul 19, 14:00 UTCJul 19, 15:10 UTC1h 10m
2026-07-18 EZY73GW MAN → NBE Jul 18, 20:45 UTCJul 19, 12:15 UTC15h 30m
2026-07-18 EZY64CA PFO → MAN Jul 18, 13:15 UTCJul 18, 18:05 UTC4h 50m
2026-07-18 EZY34QL - Jul 18, 07:45 UTCJul 18, 11:40 UTC3h 55m
2026-07-17 EZY52TN MAN → MAN Jul 17, 15:49 UTCJul 17, 23:05 UTC7h 15m
2026-07-17 EZY62ZA DJE → MAN Jul 17, 10:20 UTCJul 17, 13:25 UTC3h 5m
2026-07-17 EZY87NU MAN → DJE Jul 17, 05:15 UTCJul 17, 08:04 UTC2h 50m
2026-07-16 EZY95YX - Jul 16, 21:30 UTCJul 17, 01:45 UTC4h 15m
2026-07-16 EZY82EB - Jul 16, 16:19 UTCJul 16, 20:05 UTC3h 45m
2026-07-16 EZY68YJ NBE → MAN Jul 16, 10:35 UTCJul 16, 13:49 UTC3h 15m
2026-07-16 EZY53JD MAN → NBE Jul 16, 06:25 UTCJul 16, 09:15 UTC2h 50m
2026-07-15 EZY32GP ALC → MAN Jul 15, 21:50 UTCJul 16, 00:05 UTC2h 15m
2026-07-15 EZY41UF MAN → ALC Jul 15, 18:25 UTCJul 15, 20:50 UTC2h 25m
2026-07-15 EZY64CA - Jul 15, 12:30 UTCJul 15, 16:50 UTC4h 20m
2026-07-15 EZY34QL MAN → AYT Jul 15, 07:05 UTCJul 15, 11:10 UTC4h 5m
2026-07-14 EZY69TN RHO → MAN Jul 14, 17:45 UTCJul 14, 22:05 UTC4h 20m
2026-07-14 EZY57AZ MAN → RHO Jul 14, 12:40 UTCJul 14, 16:30 UTC3h 50m
2026-07-14 EZY92VH - Jul 14, 09:15 UTCJul 14, 11:20 UTC2h 5m
2026-07-14 EZY23UZ MAN → PSA Jul 14, 05:50 UTCJul 14, 07:45 UTC1h 55m
2026-07-13 EZY69TN RHO → MAN Jul 13, 18:55 UTCJul 13, 23:15 UTC4h 20m
2026-07-13 EZY57AZ MAN → RHO Jul 13, 14:00 UTCJul 13, 17:35 UTC3h 35m
2026-07-13 EZY83FX - Jul 13, 09:35 UTCJul 13, 12:15 UTC2h 40m

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

Mode-S 4078EF frequently asked

What is Mode-S code 4078EF?
4078EF is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-UZMI.
Where is Mode-S 4078EF registered?
Mode-S code 4078EF 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 4078EF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4078EF, octal 20074357, decimal 4,225,263.
What flights does 4078EF operate?
Mode-S 4078EF has broadcast 20 distinct callsigns, including EZY91YL, EZY93RC, EZY72UC, EZY42VZ, EZY29CT.