Apparatus

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sensors Mode-S transponder

407424

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-RMAA · AIRBUS HELICOPTERS EC-145

Hex
407424
Octal
20072044
Decimal
4,224,036
Country
GB
Tail
G-RMAA
Type
EC45
No current signal · last broadcast 15h ago
Flights observed
264
Distinct callsigns
1
Country
GB
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 407424.

Country allocation

The ICAO 24-bit address 407424 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
HLE03 - 264 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 HLE03 - Jul 17, 11:15 UTCJul 17, 11:30 UTC15m
2026-07-17 HLE03 - Jul 17, 09:50 UTCJul 17, 10:05 UTC15m
2026-07-16 HLE03 - Jul 16, 07:10 UTCJul 16, 07:45 UTC35m
2026-07-15 HLE03 - Jul 15, 12:10 UTCJul 15, 12:25 UTC15m
2026-07-15 HLE03 - Jul 15, 10:35 UTCJul 15, 11:15 UTC40m
2026-07-12 HLE03 - Jul 12, 11:40 UTCJul 12, 13:10 UTC1h 30m
2026-07-12 HLE03 - Jul 12, 10:35 UTCJul 12, 11:10 UTC35m
2026-07-11 HLE03 - Jul 11, 15:00 UTCJul 11, 15:25 UTC25m
2026-07-11 HLE03 - Jul 11, 13:55 UTCJul 11, 14:05 UTC10m
2026-07-10 HLE03 - Jul 10, 15:50 UTCJul 10, 16:05 UTC15m
2026-07-10 HLE03 - Jul 10, 14:30 UTCJul 10, 14:40 UTC10m
2026-07-10 HLE03 - Jul 10, 13:20 UTCJul 10, 13:30 UTC10m
2026-07-10 HLE03 - Jul 10, 09:45 UTCJul 10, 09:55 UTC10m
2026-07-10 HLE03 - Jul 10, 08:45 UTCJul 10, 08:55 UTC10m
2026-07-10 HLE03 - Jul 10, 07:30 UTCJul 10, 07:45 UTC15m
2026-07-08 HLE03 - Jul 8, 14:45 UTCJul 8, 15:10 UTC25m
2026-07-08 HLE03 - Jul 8, 13:50 UTCJul 8, 14:00 UTC10m
2026-07-08 HLE03 - Jul 8, 12:45 UTCJul 8, 13:00 UTC15m
2026-07-08 HLE03 - Jul 8, 11:40 UTCJul 8, 11:50 UTC10m
2026-07-07 HLE03 - Jul 7, 19:15 UTCJul 7, 19:25 UTC10m
2026-07-07 HLE03 - Jul 7, 18:00 UTCJul 7, 18:25 UTC25m
2026-07-07 HLE03 - Jul 7, 16:20 UTCJul 7, 16:40 UTC20m
2026-07-07 HLE03 - Jul 7, 09:30 UTCJul 7, 10:20 UTC50m
2026-07-05 HLE03 - Jul 5, 18:30 UTCJul 5, 18:45 UTC15m
2026-07-05 HLE03 - Jul 5, 17:40 UTCJul 5, 17:55 UTC15m
2026-07-05 HLE03 - Jul 5, 16:05 UTCJul 5, 16:20 UTC15m
2026-07-04 HLE03 - Jul 4, 13:00 UTCJul 4, 13:10 UTC10m
2026-07-04 HLE03 - Jul 4, 11:40 UTCJul 4, 11:50 UTC10m
2026-07-03 HLE03 - Jul 3, 11:00 UTCJul 3, 11:10 UTC10m
2026-07-03 HLE03 - Jul 3, 09:55 UTCJul 3, 10:15 UTC20m
2026-07-03 HLE03 - Jul 3, 09:05 UTCJul 3, 09:20 UTC15m
2026-07-03 HLE03 - Jul 3, 08:00 UTCJul 3, 08:10 UTC10m
2026-07-02 HLE03 - Jul 2, 14:50 UTCJul 2, 15:00 UTC10m
2026-07-02 HLE03 - Jul 2, 13:25 UTCJul 2, 13:45 UTC20m
2026-07-02 HLE03 - Jul 2, 11:40 UTCJul 2, 11:55 UTC15m
2026-07-01 HLE03 - Jul 1, 13:50 UTCJul 1, 14:15 UTC25m
2026-07-01 HLE03 - Jul 1, 12:25 UTCJul 1, 12:45 UTC20m
2026-07-01 HLE03 - Jul 1, 07:45 UTCJul 1, 07:55 UTC10m
2026-06-30 HLE03 - Jun 30, 15:15 UTCJun 30, 15:30 UTC15m
2026-06-30 HLE03 - Jun 30, 13:40 UTCJun 30, 13:55 UTC15m
2026-06-30 HLE03 - Jun 30, 12:55 UTCJun 30, 13:05 UTC10m
2026-06-30 HLE03 - Jun 30, 12:15 UTCJun 30, 12:30 UTC15m
2026-06-29 HLE03 - Jun 29, 16:04 UTCJun 29, 16:15 UTC10m
2026-06-29 HLE03 - Jun 29, 13:49 UTCJun 29, 13:59 UTC10m
2026-06-29 HLE03 - Jun 29, 13:09 UTCJun 29, 13:19 UTC10m
2026-06-29 HLE03 - Jun 29, 11:45 UTCJun 29, 11:55 UTC10m
2026-06-29 HLE03 - Jun 29, 10:44 UTCJun 29, 10:55 UTC10m
2026-06-28 HLE03 - Jun 28, 17:30 UTCJun 28, 17:55 UTC25m
2026-06-28 HLE03 - Jun 28, 16:55 UTCJun 28, 17:04 UTC10m
2026-06-28 HLE03 - Jun 28, 16:00 UTCJun 28, 16:19 UTC20m

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

Mode-S 407424 frequently asked

What is Mode-S code 407424?
407424 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-RMAA.
Where is Mode-S 407424 registered?
Mode-S code 407424 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 407424 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407424, octal 20072044, decimal 4,224,036.
What flights does 407424 operate?
Mode-S 407424 has broadcast 1 distinct callsign, including HLE03.