Apparatus

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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 22h ago
Flights observed
204
Distinct callsigns
2
Country
GB
Last broadcast
22h ago

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 - 203 2026-07-13
GFBPS - 1 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-06 HKS75 - Jul 6, 07:10 UTCJul 6, 07:45 UTC35m
2026-07-03 HKS75 - Jul 3, 16:00 UTCJul 3, 16:10 UTC10m
2026-07-03 HKS75 - Jul 3, 14:50 UTCJul 3, 15:05 UTC15m
2026-07-03 HKS75 - Jul 3, 13:20 UTCJul 3, 13:35 UTC15m
2026-07-03 HKS75 - Jul 3, 11:20 UTCJul 3, 11:40 UTC20m
2026-07-02 HKS75 - Jul 2, 08:55 UTCJul 2, 09:10 UTC15m
2026-07-02 HKS75 - Jul 2, 07:15 UTCJul 2, 07:30 UTC15m
2026-07-01 HKS75 - Jul 1, 14:05 UTCJul 1, 15:10 UTC1h 5m
2026-07-01 HKS75 - Jul 1, 11:55 UTCJul 1, 12:50 UTC55m
2026-07-01 HKS75 - Jul 1, 10:35 UTCJul 1, 11:00 UTC25m
2026-07-01 HKS75 - Jul 1, 07:05 UTCJul 1, 07:30 UTC25m
2026-06-29 HKS75 - Jun 29, 08:50 UTCJun 29, 09:10 UTC20m
2026-06-29 HKS75 - Jun 29, 07:30 UTCJun 29, 07:55 UTC25m
2026-06-25 HKS75 NWI → NWI Jun 25, 12:40 UTCJun 25, 15:04 UTC2h 25m
2026-06-25 HKS75 - Jun 25, 10:20 UTCJun 25, 11:04 UTC45m
2026-06-25 HKS75 - Jun 25, 09:20 UTCJun 25, 10:04 UTC45m
2026-06-24 HKS75 - Jun 24, 11:50 UTCJun 24, 12:20 UTC30m
2026-06-24 HKS75 - Jun 24, 10:04 UTCJun 24, 10:35 UTC30m
2026-06-24 HKS75 - Jun 24, 08:20 UTCJun 24, 08:45 UTC25m
2026-06-24 HKS75 - Jun 24, 07:05 UTCJun 24, 07:20 UTC15m
2026-06-22 HKS75 - Jun 22, 08:29 UTCJun 22, 08:44 UTC15m
2026-06-22 HKS75 - Jun 22, 07:10 UTCJun 22, 07:34 UTC25m
2026-06-19 HKS75 - Jun 19, 11:49 UTCJun 19, 12:29 UTC40m
2026-06-19 HKS75 - Jun 19, 10:09 UTCJun 19, 10:44 UTC35m
2026-06-19 HKS75 - Jun 19, 08:09 UTCJun 19, 08:44 UTC35m
2026-06-19 HKS75 - Jun 19, 07:09 UTCJun 19, 07:34 UTC25m
2026-06-18 HKS75 - Jun 18, 12:30 UTCJun 18, 12:40 UTC10m
2026-06-18 HKS75 - Jun 18, 10:20 UTCJun 18, 10:45 UTC25m
2026-06-18 HKS75 - Jun 18, 08:45 UTCJun 18, 09:05 UTC20m
2026-06-18 HKS75 - Jun 18, 07:10 UTCJun 18, 07:40 UTC30m

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 22h ago.
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.