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sensors Mode-S transponder

408188

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-SPJT · CESSNA 550B Citation Bravo

Hex
408188
Octal
20100610
Decimal
4,227,464
Country
GB
Tail
G-SPJT
Type
C55B
No current signal · last broadcast Jul 26, 12:20 UTC
Flights observed
120
Distinct callsigns
1
Country
GB
Last broadcast
Jul 26, 12:20 UTC

Last known position

Most recent position reported by Mode-S 408188.

Country allocation

The ICAO 24-bit address 408188 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
CBM55 - 120 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CBM55 - Jul 26, 11:25 UTCJul 26, 12:15 UTC50m
2026-07-26 CBM55 - Jul 26, 09:15 UTCJul 26, 10:40 UTC1h 25m
2026-07-26 CBM55 - Jul 26, 08:00 UTCJul 26, 08:30 UTC30m
2026-07-23 CBM55 EMA → BHX Jul 23, 15:45 UTCJul 23, 16:05 UTC20m
2026-07-22 CBM55 - Jul 22, 19:45 UTCJul 22, 20:25 UTC40m
2026-07-22 CBM55 - Jul 22, 13:25 UTCJul 22, 14:15 UTC50m
2026-07-22 CBM55 OXF → EMA Jul 22, 11:35 UTCJul 22, 12:00 UTC25m
2026-07-20 CBM55 AHO → OXF Jul 20, 15:50 UTCJul 20, 18:20 UTC2h 30m
2026-07-20 CBM55 - Jul 20, 12:00 UTCJul 20, 14:20 UTC2h 20m
2026-07-19 CBM55 - Jul 19, 12:05 UTCJul 19, 12:40 UTC35m
2026-07-19 CBM55 - Jul 19, 10:50 UTCJul 19, 11:35 UTC45m
2026-07-17 CBM55 CBG → STN Jul 17, 12:50 UTCJul 17, 13:10 UTC20m
2026-07-17 CBM55 JER → CBG Jul 17, 11:00 UTCJul 17, 11:50 UTC50m
2026-07-16 CBM55 - Jul 16, 17:30 UTCJul 16, 18:19 UTC50m
2026-07-16 CBM55 - Jul 16, 15:40 UTCJul 16, 16:30 UTC50m
2026-07-15 CBM55 - Jul 15, 08:25 UTCJul 15, 09:30 UTC1h 5m
2026-07-14 CBM55 - Jul 14, 13:10 UTCJul 14, 14:00 UTC50m
2026-07-14 CBM55 - Jul 14, 12:00 UTCJul 14, 12:35 UTC35m
2026-07-14 CBM55 - Jul 14, 07:10 UTCJul 14, 07:50 UTC40m
2026-07-13 CBM55 - Jul 13, 14:35 UTCJul 13, 15:25 UTC50m
2026-07-13 CBM55 - Jul 13, 11:50 UTCJul 13, 12:50 UTC1h 0m
2026-07-13 CBM55 - Jul 13, 10:20 UTCJul 13, 11:10 UTC50m
2026-07-12 CBM55 - Jul 12, 19:05 UTCJul 12, 19:40 UTC35m
2026-07-12 CBM55 IOM → BQH Jul 12, 17:10 UTCJul 12, 18:15 UTC1h 5m
2026-07-12 CBM55 PIK → IOM Jul 12, 14:35 UTCJul 12, 15:05 UTC30m
2026-07-12 CBM55 - Jul 12, 12:25 UTCJul 12, 13:30 UTC1h 5m
2026-07-12 CBM55 - Jul 12, 10:01 UTCJul 12, 10:45 UTC45m
2026-07-11 CBM55 - Jul 11, 16:05 UTCJul 11, 16:40 UTC35m
2026-07-11 CBM55 - Jul 11, 12:40 UTCJul 11, 13:20 UTC40m
2026-07-11 CBM55 - Jul 11, 11:15 UTCJul 11, 11:45 UTC30m
2026-07-10 CBM55 - Jul 10, 15:00 UTCJul 10, 15:50 UTC50m
2026-07-10 CBM55 - Jul 10, 12:45 UTCJul 10, 13:30 UTC45m
2026-07-03 CBM55 - Jul 3, 12:25 UTCJul 3, 12:45 UTC20m
2026-07-03 CBM55 IBZ → BQH Jul 3, 09:00 UTCJul 3, 11:30 UTC2h 30m
2026-07-03 CBM55 - Jul 3, 05:35 UTCJul 3, 07:50 UTC2h 15m
2026-06-20 CBM55 - Jun 20, 14:09 UTCJun 20, 15:44 UTC1h 35m
2026-06-20 CBM55 - Jun 20, 11:40 UTCJun 20, 12:50 UTC1h 10m
2026-06-17 CBM55 EDI → OXF Jun 17, 12:35 UTCJun 17, 13:30 UTC55m
2026-06-17 CBM55 - Jun 17, 10:25 UTCJun 17, 11:25 UTC1h 0m
2026-06-17 CBM55 SOU → LTN Jun 17, 08:35 UTCJun 17, 09:05 UTC30m
2026-06-16 CBM55 GCI → SOU Jun 16, 09:50 UTCJun 16, 10:20 UTC30m
2026-06-15 CBM55 - Jun 15, 15:15 UTCJun 15, 16:45 UTC1h 30m
2026-06-15 CBM55 - Jun 15, 09:10 UTCJun 15, 11:39 UTC2h 30m
2026-06-14 CBM55 - Jun 14, 17:05 UTCJun 14, 18:00 UTC55m
2026-06-14 CBM55 - Jun 14, 09:00 UTCJun 14, 10:00 UTC1h 0m
2026-06-13 CBM55 - Jun 13, 16:05 UTCJun 13, 18:25 UTC2h 20m
2026-06-13 CBM55 - Jun 13, 11:05 UTCJun 13, 13:30 UTC2h 25m
2026-06-13 CBM55 - Jun 13, 09:25 UTCJun 13, 09:40 UTC15m
2026-06-11 CBM55 - Jun 11, 16:45 UTCJun 11, 17:25 UTC40m
2026-06-11 CBM55 - Jun 11, 15:00 UTCJun 11, 16:05 UTC1h 5m

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

Mode-S 408188 frequently asked

What is Mode-S code 408188?
408188 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-SPJT.
Where is Mode-S 408188 registered?
Mode-S code 408188 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 408188 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408188, octal 20100610, decimal 4,227,464.
What flights does 408188 operate?
Mode-S 408188 has broadcast 1 distinct callsign, including CBM55.