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sensors Mode-S transponder

408319

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-DSCC · AGUSTA AW-169

Hex
408319
Octal
20101431
Decimal
4,227,865
Country
GB
Tail
G-DSCC
Type
A169
No current signal · last broadcast 13d ago
Flights observed
150
Distinct callsigns
1
Country
GB
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S 408319.

Country allocation

The ICAO 24-bit address 408319 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
HLE10 - 150 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 HLE10 - Jul 21, 19:10 UTCJul 21, 19:20 UTC10m
2026-07-19 HLE10 - Jul 19, 23:00 UTCJul 19, 23:20 UTC20m
2026-07-19 HLE10 - Jul 19, 22:10 UTCJul 19, 22:20 UTC10m
2026-07-19 HLE10 - Jul 19, 21:05 UTCJul 19, 21:30 UTC25m
2026-07-19 HLE10 - Jul 19, 18:30 UTCJul 19, 18:45 UTC15m
2026-07-19 HLE10 - Jul 19, 16:20 UTCJul 19, 16:35 UTC15m
2026-07-19 HLE10 - Jul 19, 15:00 UTCJul 19, 15:15 UTC15m
2026-07-19 HLE10 - Jul 19, 14:00 UTCJul 19, 14:10 UTC10m
2026-07-19 HLE10 - Jul 19, 13:00 UTCJul 19, 13:10 UTC10m
2026-07-19 HLE10 - Jul 19, 08:40 UTCJul 19, 08:55 UTC15m
2026-07-19 HLE10 - Jul 19, 07:10 UTCJul 19, 07:25 UTC15m
2026-07-18 HLE10 - Jul 18, 21:10 UTCJul 18, 21:20 UTC10m
2026-07-18 HLE10 - Jul 18, 18:55 UTCJul 18, 20:45 UTC1h 50m
2026-07-18 HLE10 - Jul 18, 16:10 UTCJul 18, 17:05 UTC55m
2026-07-18 HLE10 - Jul 18, 13:40 UTCJul 18, 14:00 UTC20m
2026-07-18 HLE10 - Jul 18, 12:10 UTCJul 18, 12:25 UTC15m
2026-07-17 HLE10 - Jul 17, 19:30 UTCJul 17, 20:10 UTC40m
2026-07-17 HLE10 - Jul 17, 18:15 UTCJul 17, 18:29 UTC15m
2026-07-17 HLE10 - Jul 17, 14:44 UTCJul 17, 14:50 UTC5m
2026-07-16 HLE10 - Jul 16, 12:40 UTCJul 16, 13:00 UTC20m
2026-07-12 HLE10 - Jul 12, 15:30 UTCJul 12, 15:50 UTC20m
2026-07-12 HLE10 - Jul 12, 14:10 UTCJul 12, 14:25 UTC15m
2026-07-12 HLE10 - Jul 12, 13:25 UTCJul 12, 13:55 UTC30m
2026-07-12 HLE10 - Jul 12, 12:10 UTCJul 12, 12:35 UTC25m
2026-07-12 HLE10 - Jul 12, 01:05 UTCJul 12, 01:15 UTC10m
2026-07-11 HLE10 - Jul 11, 23:40 UTCJul 11, 23:45 UTC5m
2026-07-11 HLE10 - Jul 11, 21:25 UTCJul 11, 21:45 UTC20m
2026-07-11 HLE10 - Jul 11, 20:25 UTCJul 11, 20:40 UTC15m
2026-07-11 HLE10 - Jul 11, 19:35 UTCJul 11, 19:50 UTC15m
2026-07-10 HLE10 - Jul 10, 22:05 UTCJul 10, 22:30 UTC25m
2026-07-10 HLE10 - Jul 10, 21:10 UTCJul 10, 21:20 UTC10m
2026-07-10 HLE10 - Jul 10, 12:00 UTCJul 10, 12:10 UTC10m
2026-07-10 HLE10 - Jul 10, 10:50 UTCJul 10, 11:05 UTC15m
2026-07-10 HLE10 - Jul 10, 08:50 UTCJul 10, 09:00 UTC10m
2026-07-09 HLE10 - Jul 9, 16:10 UTCJul 9, 16:20 UTC10m
2026-07-09 HLE10 - Jul 9, 10:25 UTCJul 9, 10:45 UTC20m
2026-07-09 HLE10 - Jul 9, 08:20 UTCJul 9, 08:40 UTC20m
2026-07-08 HLE10 - Jul 8, 18:55 UTCJul 8, 19:15 UTC20m
2026-07-08 HLE10 - Jul 8, 18:00 UTCJul 8, 18:15 UTC15m
2026-07-08 HLE10 - Jul 8, 16:40 UTCJul 8, 16:55 UTC15m
2026-07-08 HLE10 - Jul 8, 12:25 UTCJul 8, 12:45 UTC20m
2026-07-08 HLE10 - Jul 8, 07:25 UTCJul 8, 07:30 UTC5m
2026-07-07 HLE10 - Jul 7, 15:15 UTCJul 7, 15:30 UTC15m
2026-07-07 HLE10 - Jul 7, 14:35 UTCJul 7, 14:45 UTC10m
2026-07-07 HLE10 - Jul 7, 13:40 UTCJul 7, 13:55 UTC15m
2026-07-07 HLE10 - Jul 7, 11:25 UTCJul 7, 11:35 UTC10m
2026-07-07 HLE10 - Jul 7, 10:30 UTCJul 7, 10:40 UTC10m
2026-07-07 HLE10 - Jul 7, 09:50 UTCJul 7, 10:10 UTC20m
2026-07-07 HLE10 - Jul 7, 09:00 UTCJul 7, 09:15 UTC15m
2026-07-07 HLE10 - Jul 7, 02:55 UTCJul 7, 03:40 UTC45m

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

Mode-S 408319 frequently asked

What is Mode-S code 408319?
408319 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-DSCC.
Where is Mode-S 408319 registered?
Mode-S code 408319 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 408319 broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408319, octal 20101431, decimal 4,227,865.
What flights does 408319 operate?
Mode-S 408319 has broadcast 1 distinct callsign, including HLE10.