sensors Mode-S transponder

408281

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-ISLP · ATR-72-600

Hex
408281
Octal
20101201
Decimal
4,227,713
Country
GB
Tail
G-ISLP
Type
AT76
No current signal · last broadcast 13h ago
Flights observed
16
Distinct callsigns
13
Country
GB
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 408281.

Country allocation

The ICAO 24-bit address 408281 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 13 distinct

Callsign Airline Flights Last seen
AUR8LG - 3 2026-04-13
AUR2BM - 2 2026-04-13
AUR9LG - 1 2026-04-13
AUR611Y - 1 2026-04-12
AUR610A - 1 2026-04-12
AUR604A - 1 2026-04-14
AUR601Y - 1 2026-04-14
AUR600A - 1 2026-04-14
AUR51H - 1 2026-04-13
AUR50H Aurigny Air Services 1 2026-04-13
AUR3LG - 1 2026-04-13
AUR3BM - 1 2026-04-13
AUR2LG - 1 2026-04-13

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 AUR604A GCI → LGW Apr 14, 09:20 UTCApr 14, 10:00 UTC40m
2026-04-14 AUR601Y LGW → GCI Apr 14, 07:45 UTCApr 14, 08:30 UTC45m
2026-04-14 AUR600A GCI → LGW Apr 14, 06:05 UTCApr 14, 06:50 UTC45m
2026-04-13 AUR9LG LGW → GCI Apr 13, 17:20 UTCApr 13, 18:00 UTC40m
2026-04-13 AUR8LG - Apr 13, 16:15 UTCApr 13, 16:20 UTC5m
2026-04-13 AUR8LG - Apr 13, 15:50 UTCApr 13, 16:20 UTC30m
2026-04-13 AUR8LG - Apr 13, 15:40 UTCApr 13, 16:15 UTC35m
2026-04-13 AUR3BM - Apr 13, 13:55 UTCApr 13, 14:50 UTC55m
2026-04-13 AUR2BM - Apr 13, 12:20 UTCApr 13, 12:55 UTC35m
2026-04-13 AUR2BM - Apr 13, 12:00 UTCApr 13, 12:15 UTC15m
2026-04-13 AUR3LG LGW → GCI Apr 13, 10:15 UTCApr 13, 10:55 UTC40m
2026-04-13 AUR2LG GCI → LGW Apr 13, 08:25 UTCApr 13, 09:10 UTC45m
2026-04-13 AUR51H SOU → GCI Apr 13, 07:00 UTCApr 13, 07:35 UTC35m
2026-04-13 AUR50H GCI → SOU Apr 13, 05:45 UTCApr 13, 06:15 UTC30m
2026-04-12 AUR611Y - Apr 12, 19:05 UTCApr 12, 19:45 UTC40m
2026-04-12 AUR610A - Apr 12, 17:35 UTCApr 12, 18:15 UTC40m

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

Mode-S 408281 frequently asked

What is Mode-S code 408281?
408281 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-ISLP.
Where is Mode-S 408281 registered?
Mode-S code 408281 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 408281 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408281, octal 20101201, decimal 4,227,713.
What flights does 408281 operate?
Mode-S 408281 has broadcast 13 distinct callsigns, including AUR8LG, AUR2BM, AUR9LG, AUR611Y, AUR610A.