sensors Mode-S transponder

4082AC

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
4082AC
Octal
20101254
Decimal
4,227,756
Country
GB
Tail
G-UZMM
Type
A21N
No current signal · last broadcast 14h ago
Flights observed
13
Distinct callsigns
7
Country
GB
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4082AC.

Country allocation

The ICAO 24-bit address 4082AC 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 7 distinct

Callsign Airline Flights Last seen
EZY76HE - 3 2026-04-13
EZY73BD easyJet 2 2026-04-13
EZY49YR easyJet 2 2026-04-14
EZY48FK - 2 2026-04-13
EZY37FX - 2 2026-04-13
EZY79GK easyJet 1 2026-04-14
EZY56HR - 1 2026-04-12

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 EZY79GK NCE → LTN Apr 14, 09:40 UTCApr 14, 11:05 UTC1h 25m
2026-04-14 EZY49YR LGW → MLA Apr 14, 07:10 UTCApr 14, 08:20 UTC1h 10m
2026-04-14 EZY49YR LGW → MLA Apr 14, 05:30 UTCApr 14, 07:10 UTC1h 40m
2026-04-13 EZY48FK - Apr 13, 19:50 UTCApr 13, 21:55 UTC2h 5m
2026-04-13 EZY48FK - Apr 13, 19:20 UTCApr 13, 20:10 UTC50m
2026-04-13 EZY73BD LGW → SVQ Apr 13, 16:15 UTCApr 13, 18:10 UTC1h 55m
2026-04-13 EZY73BD LGW → SVQ Apr 13, 16:00 UTCApr 13, 16:15 UTC15m
2026-04-13 EZY76HE - Apr 13, 12:20 UTCApr 13, 14:35 UTC2h 15m
2026-04-13 EZY76HE - Apr 13, 11:55 UTCApr 13, 14:35 UTC2h 40m
2026-04-13 EZY76HE - Apr 13, 08:20 UTCApr 13, 12:15 UTC3h 55m
2026-04-13 EZY37FX - Apr 13, 07:55 UTCApr 13, 11:50 UTC3h 55m
2026-04-13 EZY37FX - Apr 13, 06:00 UTCApr 13, 08:15 UTC2h 15m
2026-04-12 EZY56HR - Apr 12, 17:40 UTCApr 12, 20:15 UTC2h 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-UZMM page for operator, model, and routing details .

Mode-S 4082AC frequently asked

What is Mode-S code 4082AC?
4082AC is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-UZMM.
Where is Mode-S 4082AC registered?
Mode-S code 4082AC 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 4082AC broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4082AC, octal 20101254, decimal 4,227,756.
What flights does 4082AC operate?
Mode-S 4082AC has broadcast 7 distinct callsigns, including EZY76HE, EZY73BD, EZY49YR, EZY48FK, EZY37FX.