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sensors Mode-S transponder

400944

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-SAJD · EMBRAER ERJ-145

Hex
400944
Octal
20004504
Decimal
4,196,676
Country
GB
Tail
G-SAJD
Type
E145
No current signal · last broadcast 3h ago
Flights observed
561
Distinct callsigns
20
Country
GB
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 400944.

Country allocation

The ICAO 24-bit address 400944 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 20 distinct

Callsign Airline Flights Last seen
LOG4MG Loganair 28 2026-06-10
LOG539B Loganair 27 2026-06-01
LOG1LZ Loganair 27 2026-06-10
LOG19FR Loganair 26 2026-06-10
LOG22N Loganair 25 2026-06-10
LOG9CX Loganair 24 2026-06-10
LOG14WM Loganair 24 2026-06-10
LOG32MW - 23 2026-07-14
LOG28CN - 23 2026-07-14
LOG19KG Loganair 22 2026-06-10
LOG9KW Loganair 21 2026-06-01
LOG47ZL - 21 2026-07-13
LOG39GA - 21 2026-07-14
LOG26VG - 21 2026-07-13
LOG25CH - 21 2026-07-14
LOG22LW Loganair 21 2026-06-07
LOG64AN - 20 2026-07-13
LOG15C Loganair 20 2026-06-10
LOG27X Loganair 19 2026-06-11
LOG27VC - 19 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 LOG39GA - Jul 14, 10:30 UTCJul 14, 11:00 UTC30m
2026-07-14 LOG25CH - Jul 14, 09:00 UTCJul 14, 09:20 UTC20m
2026-07-14 LOG28CN - Jul 14, 07:30 UTCJul 14, 08:00 UTC30m
2026-07-14 LOG32MW - Jul 14, 06:05 UTCJul 14, 06:30 UTC25m
2026-07-13 LOG27VC - Jul 13, 18:30 UTCJul 13, 18:55 UTC25m
2026-07-13 LOG64AN - Jul 13, 17:10 UTCJul 13, 17:30 UTC20m
2026-07-13 LOG26VG - Jul 13, 15:30 UTCJul 13, 16:00 UTC30m
2026-07-13 LOG47ZL - Jul 13, 14:05 UTCJul 13, 14:30 UTC25m
2026-07-13 LOG39GA - Jul 13, 10:40 UTCJul 13, 11:05 UTC25m
2026-07-13 LOG25CH - Jul 13, 09:10 UTCJul 13, 09:35 UTC25m
2026-07-13 LOG28CN - Jul 13, 07:35 UTCJul 13, 08:05 UTC30m
2026-07-13 LOG32MW - Jul 13, 06:05 UTCJul 13, 06:30 UTC25m
2026-07-12 LOG17XY - Jul 12, 19:45 UTCJul 12, 20:10 UTC25m
2026-07-12 LOG9AW - Jul 12, 18:30 UTCJul 12, 19:01 UTC30m
2026-07-12 LOG54HJ - Jul 12, 16:55 UTCJul 12, 17:15 UTC20m
2026-07-12 LOG81BJ - Jul 12, 15:25 UTCJul 12, 15:50 UTC25m
2026-07-12 LOG43YD - Jul 12, 13:55 UTCJul 12, 14:25 UTC30m
2026-07-12 LOG75GR - Jul 12, 12:30 UTCJul 12, 12:50 UTC20m
2026-07-11 LOG49XC NQY → GLA Jul 11, 14:10 UTCJul 11, 15:20 UTC1h 10m
2026-07-11 LOG68GN GLA → NQY Jul 11, 12:20 UTCJul 11, 13:30 UTC1h 10m
2026-07-11 LOG39GA - Jul 11, 10:50 UTCJul 11, 11:15 UTC25m
2026-07-11 LOG25CH - Jul 11, 09:20 UTCJul 11, 09:45 UTC25m
2026-07-10 LOG27VC - Jul 10, 18:40 UTCJul 10, 19:15 UTC35m
2026-07-10 LOG64AN - Jul 10, 17:20 UTCJul 10, 17:45 UTC25m
2026-07-10 LOG26VG - Jul 10, 15:45 UTCJul 10, 16:20 UTC35m
2026-07-10 LOG47ZL - Jul 10, 14:15 UTCJul 10, 14:35 UTC20m
2026-07-10 LOG39GA - Jul 10, 10:45 UTCJul 10, 11:10 UTC25m
2026-07-10 LOG25CH - Jul 10, 09:10 UTCJul 10, 09:30 UTC20m
2026-07-10 LOG28CN - Jul 10, 07:45 UTCJul 10, 08:10 UTC25m
2026-07-10 LOG32MW - Jul 10, 06:15 UTCJul 10, 06:45 UTC30m
2026-07-09 LOG27VC - Jul 9, 18:50 UTCJul 9, 19:20 UTC30m
2026-07-09 LOG64AN - Jul 9, 17:25 UTCJul 9, 17:55 UTC30m
2026-07-09 LOG26VG - Jul 9, 15:35 UTCJul 9, 16:00 UTC25m
2026-07-09 LOG47ZL - Jul 9, 13:50 UTCJul 9, 14:20 UTC30m
2026-07-09 LOG28CN - Jul 9, 07:45 UTCJul 9, 08:15 UTC30m
2026-07-09 LOG32MW - Jul 9, 06:10 UTCJul 9, 06:35 UTC25m
2026-07-08 LOG27VC - Jul 8, 18:30 UTCJul 8, 19:00 UTC30m
2026-07-08 LOG64AN - Jul 8, 17:00 UTCJul 8, 17:25 UTC25m
2026-07-08 LOG26VG - Jul 8, 15:35 UTCJul 8, 16:05 UTC30m
2026-07-08 LOG47ZL - Jul 8, 14:00 UTCJul 8, 14:20 UTC20m
2026-07-08 LOG28CN - Jul 8, 07:40 UTCJul 8, 08:05 UTC25m
2026-07-08 LOG32MW - Jul 8, 06:00 UTCJul 8, 06:35 UTC35m
2026-07-07 LOG27VC - Jul 7, 18:30 UTCJul 7, 19:00 UTC30m
2026-07-07 LOG64AN - Jul 7, 17:00 UTCJul 7, 17:30 UTC30m
2026-07-07 LOG26VG - Jul 7, 15:20 UTCJul 7, 15:45 UTC25m
2026-07-07 LOG47ZL - Jul 7, 13:50 UTCJul 7, 14:20 UTC30m
2026-07-07 LOG28CN - Jul 7, 07:35 UTCJul 7, 08:00 UTC25m
2026-07-07 LOG32MW - Jul 7, 06:00 UTCJul 7, 06:30 UTC30m
2026-07-06 LOG27VC - Jul 6, 18:25 UTCJul 6, 18:50 UTC25m
2026-07-06 LOG64AN - Jul 6, 17:00 UTCJul 6, 17:25 UTC25m

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

Mode-S 400944 frequently asked

What is Mode-S code 400944?
400944 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-SAJD.
Where is Mode-S 400944 registered?
Mode-S code 400944 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 400944 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400944, octal 20004504, decimal 4,196,676.
What flights does 400944 operate?
Mode-S 400944 has broadcast 20 distinct callsigns, including LOG4MG, LOG539B, LOG1LZ, LOG19FR, LOG22N.