Apparatus

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sensors Mode-S transponder

408331

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-SCLN · PILATUS PC-12

Hex
408331
Octal
20101461
Decimal
4,227,889
Country
GB
Tail
G-SCLN
Type
PC12
No current signal · last broadcast 17h ago
Flights observed
81
Distinct callsigns
1
Country
GB
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 408331.

Country allocation

The ICAO 24-bit address 408331 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
GSCLN - 80 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 GSCLN NQY → BQH Jul 13, 08:50 UTCJul 13, 10:10 UTC1h 20m
2026-07-13 GSCLN - Jul 13, 07:05 UTCJul 13, 08:05 UTC1h 0m
2026-07-12 GSCLN JER → BQH Jul 12, 19:10 UTCJul 12, 20:15 UTC1h 5m
2026-07-12 GSCLN MAN → JER Jul 12, 15:40 UTCJul 12, 16:55 UTC1h 15m
2026-07-11 GSCLN JER → MAN Jul 11, 11:15 UTCJul 11, 12:30 UTC1h 15m
2026-07-11 GSCLN - Jul 11, 09:20 UTCJul 11, 10:20 UTC1h 0m
2026-07-10 GSCLN - Jul 10, 12:55 UTCJul 10, 15:10 UTC2h 15m
2026-07-10 GSCLN - Jul 10, 09:55 UTCJul 10, 12:00 UTC2h 5m
2026-07-09 GSCLN LPL → BQH Jul 9, 08:35 UTCJul 9, 09:30 UTC55m
2026-07-09 GSCLN - Jul 9, 06:15 UTCJul 9, 07:45 UTC1h 30m
2026-07-08 GSCLN BQH → WIC Jul 8, 11:15 UTCJul 8, 13:20 UTC2h 5m
2026-07-06 GSCLN - Jul 6, 07:55 UTCJul 6, 08:50 UTC55m
2026-07-04 GSCLN - Jul 4, 08:15 UTCJul 4, 08:55 UTC40m
2026-07-01 GSCLN - Jul 1, 08:00 UTCJul 1, 09:10 UTC1h 10m
2026-06-29 GSCLN - Jun 29, 08:14 UTCJun 29, 09:25 UTC1h 10m
2026-06-27 GSCLN NCL → BQH Jun 27, 16:00 UTCJun 27, 17:14 UTC1h 15m
2026-06-26 GSCLN - Jun 26, 08:54 UTCJun 26, 09:59 UTC1h 5m
2026-06-24 - - Jun 24, 17:14 UTCJun 25, 07:54 UTC14h 40m
2026-06-24 GSCLN ZRH → BQH Jun 24, 14:45 UTCJun 24, 16:34 UTC1h 50m
2026-06-24 GSCLN MXP → ZRH Jun 24, 10:10 UTCJun 24, 10:59 UTC50m
2026-06-20 GSCLN - Jun 20, 08:25 UTCJun 20, 10:39 UTC2h 15m
2026-06-19 GSCLN - Jun 19, 11:04 UTCJun 19, 11:30 UTC25m
2026-06-19 GSCLN - Jun 19, 09:19 UTCJun 19, 10:29 UTC1h 10m
2026-06-19 GSCLN - Jun 19, 07:34 UTCJun 19, 08:24 UTC50m
2026-06-19 GSCLN - Jun 19, 05:40 UTCJun 19, 06:44 UTC1h 5m
2026-06-17 GSCLN - Jun 17, 09:55 UTCJun 17, 11:10 UTC1h 15m
2026-06-16 GSCLN - Jun 16, 14:00 UTCJun 16, 15:05 UTC1h 5m
2026-06-16 GSCLN - Jun 16, 10:35 UTCJun 16, 11:35 UTC1h 0m
2026-06-16 GSCLN - Jun 16, 09:15 UTCJun 16, 09:25 UTC10m
2026-06-15 GSCLN FAB → BQH Jun 15, 12:00 UTCJun 15, 12:15 UTC15m
2026-06-15 GSCLN JER → FAB Jun 15, 10:15 UTCJun 15, 10:55 UTC40m
2026-06-15 GSCLN - Jun 15, 08:00 UTCJun 15, 09:00 UTC1h 0m
2026-06-14 GSCLN - Jun 14, 14:50 UTCJun 14, 16:00 UTC1h 10m
2026-06-14 GSCLN - Jun 14, 10:40 UTCJun 14, 11:35 UTC55m
2026-06-12 GSCLN - Jun 12, 09:55 UTCJun 12, 10:50 UTC55m
2026-06-12 GSCLN - Jun 12, 07:55 UTCJun 12, 09:05 UTC1h 10m
2026-06-10 GSCLN CWL → BQH Jun 10, 11:20 UTCJun 10, 12:00 UTC40m
2026-06-10 GSCLN NQY → CWL Jun 10, 10:15 UTCJun 10, 10:40 UTC25m
2026-06-10 GSCLN - Jun 10, 07:30 UTCJun 10, 08:35 UTC1h 5m
2026-06-09 GSCLN - Jun 9, 09:50 UTCJun 9, 11:30 UTC1h 40m
2026-06-08 GSCLN - Jun 8, 09:45 UTCJun 8, 11:10 UTC1h 25m
2026-06-07 GSCLN - Jun 7, 12:45 UTCJun 7, 15:00 UTC2h 15m
2026-06-05 GSCLN - Jun 5, 15:40 UTCJun 5, 18:05 UTC2h 25m
2026-06-03 GSCLN - Jun 3, 11:55 UTCJun 3, 15:10 UTC3h 15m
2026-06-01 GSCLN - Jun 1, 13:45 UTCJun 1, 14:10 UTC25m
2026-06-01 GSCLN - Jun 1, 10:50 UTCJun 1, 12:40 UTC1h 50m
2026-06-01 GSCLN - Jun 1, 07:50 UTCJun 1, 09:45 UTC1h 55m
2026-05-31 GSCLN CAX → BQH May 31, 14:20 UTCMay 31, 15:35 UTC1h 15m
2026-05-31 GSCLN - May 31, 11:45 UTCMay 31, 13:05 UTC1h 20m
2026-05-29 GSCLN MME → BQH May 29, 19:10 UTCMay 29, 20:10 UTC1h 0m

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

Mode-S 408331 frequently asked

What is Mode-S code 408331?
408331 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-SCLN.
Where is Mode-S 408331 registered?
Mode-S code 408331 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 408331 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408331, octal 20101461, decimal 4,227,889.
What flights does 408331 operate?
Mode-S 408331 has broadcast 1 distinct callsign, including GSCLN.