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sensors Mode-S transponder

407B24

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EMEI · AIRBUS HELICOPTERS EC-175 · operated by CHC Scotia

Hex
407B24
Octal
20075444
Decimal
4,225,828
Country
GB
Tail
G-EMEI
Type
EC75
No current signal · last broadcast Jul 26, 07:55 UTC
Flights observed
234
Distinct callsigns
2
Country
GB
Last broadcast
Jul 26, 07:55 UTC

Last known position

Most recent position reported by Mode-S 407B24.

Country allocation

The ICAO 24-bit address 407B24 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 2 distinct

Callsign Airline Flights Last seen
HKS75 - 233 2026-07-26
GFBPS - 1 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HKS75 NWI → NWI Jul 26, 07:40 UTCJul 26, 07:55 UTC15m
2026-07-24 HKS75 - Jul 24, 12:45 UTCJul 24, 13:10 UTC25m
2026-07-24 HKS75 - Jul 24, 10:35 UTCJul 24, 11:05 UTC30m
2026-07-24 HKS75 - Jul 24, 08:25 UTCJul 24, 08:45 UTC20m
2026-07-24 HKS75 - Jul 24, 07:00 UTCJul 24, 07:25 UTC25m
2026-07-23 HKS75 - Jul 23, 14:25 UTCJul 23, 14:35 UTC10m
2026-07-23 HKS75 - Jul 23, 13:25 UTCJul 23, 13:45 UTC20m
2026-07-23 HKS75 - Jul 23, 12:00 UTCJul 23, 12:25 UTC25m
2026-07-23 HKS75 - Jul 23, 10:05 UTCJul 23, 10:40 UTC35m
2026-07-23 HKS75 - Jul 23, 08:30 UTCJul 23, 08:45 UTC15m
2026-07-23 HKS75 - Jul 23, 07:05 UTCJul 23, 07:25 UTC20m
2026-07-22 HKS75 - Jul 22, 12:05 UTCJul 22, 12:40 UTC35m
2026-07-21 HKS75 - Jul 21, 11:20 UTCJul 21, 11:35 UTC15m
2026-07-21 HKS75 - Jul 21, 10:10 UTCJul 21, 10:30 UTC20m
2026-07-20 HKS75 - Jul 20, 11:25 UTCJul 20, 11:40 UTC15m
2026-07-20 HKS75 - Jul 20, 10:05 UTCJul 20, 10:25 UTC20m
2026-07-20 HKS75 NWI → NWI Jul 20, 07:00 UTCJul 20, 08:45 UTC1h 45m
2026-07-19 HKS75 NWI → NWI Jul 19, 08:25 UTCJul 19, 08:55 UTC30m
2026-07-17 HKS75 - Jul 17, 12:40 UTCJul 17, 12:55 UTC15m
2026-07-17 HKS75 - Jul 17, 10:35 UTCJul 17, 11:10 UTC35m
2026-07-17 HKS75 - Jul 17, 08:20 UTCJul 17, 08:40 UTC20m
2026-07-17 HKS75 - Jul 17, 07:00 UTCJul 17, 07:40 UTC40m
2026-07-16 HKS75 NWI → NWI Jul 16, 10:40 UTCJul 16, 13:05 UTC2h 25m
2026-07-16 HKS75 - Jul 16, 08:15 UTCJul 16, 08:55 UTC40m
2026-07-16 HKS75 - Jul 16, 07:10 UTCJul 16, 07:35 UTC25m
2026-07-15 HKS75 - Jul 15, 10:05 UTCJul 15, 12:30 UTC2h 25m
2026-07-15 HKS75 - Jul 15, 08:30 UTCJul 15, 08:55 UTC25m
2026-07-15 HKS75 - Jul 15, 07:10 UTCJul 15, 07:50 UTC40m
2026-07-14 HKS75 NWI → NWI Jul 14, 12:50 UTCJul 14, 14:00 UTC1h 10m
2026-07-14 HKS75 - Jul 14, 07:35 UTCJul 14, 08:35 UTC1h 0m
2026-07-13 HKS75 - Jul 13, 08:15 UTCJul 13, 08:45 UTC30m
2026-07-13 HKS75 - Jul 13, 07:01 UTCJul 13, 07:35 UTC35m
2026-07-10 HKS75 NWI → NWI Jul 10, 10:05 UTCJul 10, 12:30 UTC2h 25m
2026-07-10 HKS75 - Jul 10, 07:00 UTCJul 10, 08:35 UTC1h 35m
2026-07-09 HKS75 - Jul 9, 13:40 UTCJul 9, 15:15 UTC1h 35m
2026-07-09 HKS75 - Jul 9, 11:55 UTCJul 9, 12:45 UTC50m
2026-07-09 HKS75 - Jul 9, 10:20 UTCJul 9, 10:55 UTC35m
2026-07-09 HKS75 - Jul 9, 08:25 UTCJul 9, 08:50 UTC25m
2026-07-09 HKS75 - Jul 9, 07:10 UTCJul 9, 07:30 UTC20m
2026-07-08 HKS75 - Jul 8, 13:50 UTCJul 8, 14:05 UTC15m
2026-07-08 HKS75 - Jul 8, 11:45 UTCJul 8, 12:15 UTC30m
2026-07-08 HKS75 - Jul 8, 08:40 UTCJul 8, 09:00 UTC20m
2026-07-08 HKS75 - Jul 8, 07:15 UTCJul 8, 07:35 UTC20m
2026-07-07 HKS75 - Jul 7, 16:30 UTCJul 7, 17:00 UTC30m
2026-07-07 HKS75 - Jul 7, 14:55 UTCJul 7, 15:35 UTC40m
2026-07-07 HKS75 - Jul 7, 13:30 UTCJul 7, 13:50 UTC20m
2026-07-07 HKS75 - Jul 7, 11:25 UTCJul 7, 12:00 UTC35m
2026-07-07 HKS75 - Jul 7, 09:10 UTCJul 7, 09:40 UTC30m
2026-07-07 HKS75 - Jul 7, 07:15 UTCJul 7, 08:00 UTC45m
2026-07-06 HKS75 - Jul 6, 08:30 UTCJul 6, 08:55 UTC25m

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

Mode-S 407B24 frequently asked

What is Mode-S code 407B24?
407B24 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EMEI.
Where is Mode-S 407B24 registered?
Mode-S code 407B24 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 407B24 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 07:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407B24, octal 20075444, decimal 4,225,828.
What flights does 407B24 operate?
Mode-S 407B24 has broadcast 2 distinct callsigns, including HKS75, GFBPS.