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sensors Mode-S transponder

4082B5

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-PMMC · AGUSTA AW-139

Hex
4082B5
Octal
20101265
Decimal
4,227,765
Country
GB
Tail
G-PMMC
Type
A139
No current signal · last broadcast Jul 26, 16:10 UTC
Flights observed
446
Distinct callsigns
1
Country
GB
Last broadcast
Jul 26, 16:10 UTC

Last known position

Most recent position reported by Mode-S 4082B5.

Country allocation

The ICAO 24-bit address 4082B5 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 1 distinct

Callsign Airline Flights Last seen
GPMMC - 446 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GPMMC - Jul 26, 15:40 UTCJul 26, 16:10 UTC30m
2026-07-26 GPMMC - Jul 26, 14:55 UTCJul 26, 15:10 UTC15m
2026-07-26 GPMMC - Jul 26, 07:35 UTCJul 26, 08:10 UTC35m
2026-07-26 GPMMC - Jul 26, 06:15 UTCJul 26, 06:50 UTC36m
2026-07-25 GPMMC - Jul 25, 17:50 UTCJul 25, 18:25 UTC35m
2026-07-25 GPMMC - Jul 25, 16:35 UTCJul 25, 17:20 UTC45m
2026-07-25 GPMMC NWI → NWI Jul 25, 05:45 UTCJul 25, 06:55 UTC1h 10m
2026-07-24 GPMMC - Jul 24, 17:25 UTCJul 24, 18:10 UTC45m
2026-07-24 GPMMC - Jul 24, 16:15 UTCJul 24, 16:50 UTC35m
2026-07-24 GPMMC NWI → NWI Jul 24, 08:25 UTCJul 24, 09:25 UTC1h 0m
2026-07-24 GPMMC - Jul 24, 07:00 UTCJul 24, 07:40 UTC40m
2026-07-24 GPMMC - Jul 24, 05:50 UTCJul 24, 06:25 UTC35m
2026-07-23 GPMMC NWI → NWI Jul 23, 14:50 UTCJul 23, 17:00 UTC2h 10m
2026-07-23 GPMMC - Jul 23, 07:55 UTCJul 23, 09:20 UTC1h 25m
2026-07-23 GPMMC - Jul 23, 06:50 UTCJul 23, 07:00 UTC10m
2026-07-23 GPMMC - Jul 23, 06:05 UTCJul 23, 06:20 UTC15m
2026-07-22 GPMMC - Jul 22, 12:15 UTCJul 22, 15:25 UTC3h 10m
2026-07-21 GPMMC - Jul 21, 16:30 UTCJul 21, 16:50 UTC20m
2026-07-21 GPMMC - Jul 21, 15:15 UTCJul 21, 15:35 UTC20m
2026-07-21 GPMMC - Jul 21, 11:10 UTCJul 21, 12:50 UTC1h 40m
2026-07-21 GPMMC - Jul 21, 09:15 UTCJul 21, 11:05 UTC1h 50m
2026-07-21 GPMMC - Jul 21, 07:45 UTCJul 21, 07:50 UTC5m
2026-07-21 GPMMC - Jul 21, 06:20 UTCJul 21, 06:45 UTC25m
2026-07-20 GPMMC - Jul 20, 15:35 UTCJul 20, 16:15 UTC40m
2026-07-20 GPMMC - Jul 20, 14:25 UTCJul 20, 14:45 UTC20m
2026-07-20 GPMMC - Jul 20, 10:05 UTCJul 20, 10:50 UTC45m
2026-07-20 GPMMC - Jul 20, 08:45 UTCJul 20, 09:25 UTC40m
2026-07-20 GPMMC - Jul 20, 06:25 UTCJul 20, 07:35 UTC1h 10m
2026-07-19 GPMMC NWI → NWI Jul 19, 14:10 UTCJul 19, 16:05 UTC1h 55m
2026-07-19 GPMMC - Jul 19, 07:05 UTCJul 19, 08:00 UTC55m
2026-07-19 GPMMC - Jul 19, 05:50 UTCJul 19, 06:25 UTC35m
2026-07-18 GPMMC - Jul 18, 14:30 UTCJul 18, 16:25 UTC1h 55m
2026-07-18 GPMMC - Jul 18, 08:35 UTCJul 18, 08:50 UTC15m
2026-07-18 GPMMC - Jul 18, 07:45 UTCJul 18, 07:55 UTC10m
2026-07-18 GPMMC - Jul 18, 05:50 UTCJul 18, 06:40 UTC50m
2026-07-17 GPMMC - Jul 17, 15:44 UTCJul 17, 16:15 UTC30m
2026-07-17 GPMMC - Jul 17, 14:00 UTCJul 17, 14:39 UTC40m
2026-07-17 GPMMC - Jul 17, 10:10 UTCJul 17, 10:50 UTC40m
2026-07-17 GPMMC - Jul 17, 08:59 UTCJul 17, 09:35 UTC35m
2026-07-17 GPMMC - Jul 17, 07:44 UTCJul 17, 08:20 UTC35m
2026-07-17 GPMMC - Jul 17, 05:55 UTCJul 17, 06:35 UTC40m
2026-07-16 GPMMC - Jul 16, 16:05 UTCJul 16, 16:49 UTC45m
2026-07-16 GPMMC - Jul 16, 14:15 UTCJul 16, 15:00 UTC45m
2026-07-16 GPMMC - Jul 16, 11:05 UTCJul 16, 12:55 UTC1h 50m
2026-07-16 GPMMC - Jul 16, 07:30 UTCJul 16, 08:05 UTC35m
2026-07-16 GPMMC - Jul 16, 05:40 UTCJul 16, 06:25 UTC45m
2026-07-15 GPMMC NWI → NWI Jul 15, 14:30 UTCJul 15, 16:35 UTC2h 5m
2026-07-15 GPMMC NWI → NWI Jul 15, 08:50 UTCJul 15, 12:20 UTC3h 30m
2026-07-15 GPMMC - Jul 15, 07:25 UTCJul 15, 07:40 UTC15m
2026-07-15 GPMMC - Jul 15, 06:25 UTCJul 15, 06:40 UTC15m

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

Mode-S 4082B5 frequently asked

What is Mode-S code 4082B5?
4082B5 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-PMMC.
Where is Mode-S 4082B5 registered?
Mode-S code 4082B5 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 4082B5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4082B5, octal 20101265, decimal 4,227,765.
What flights does 4082B5 operate?
Mode-S 4082B5 has broadcast 1 distinct callsign, including GPMMC.