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sensors Mode-S transponder

400846

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-SAJN · EMBRAER ERJ-145

Hex
400846
Octal
20004106
Decimal
4,196,422
Country
GB
Tail
G-SAJN
Type
E145
No current signal · last broadcast Jul 26, 20:20 UTC
Flights observed
608
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 20:20 UTC

Last known position

Most recent position reported by Mode-S 400846.

Country allocation

The ICAO 24-bit address 400846 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
LOG52L Loganair 43 2026-07-23
LOG4MU - 43 2026-07-22
LOG51D Loganair 42 2026-07-23
LOG18D - 42 2026-07-22
LOG93Y Loganair 38 2026-07-22
LOG92W Loganair 37 2026-07-22
LOG9AW Loganair 24 2026-07-26
LOG17XY Loganair 23 2026-07-26
LOG9LB - 12 2026-06-24
LOG22MP - 12 2026-06-24
LOG26U - 11 2026-06-24
LOG14ZT - 11 2026-06-24
LOG539B Loganair 10 2026-06-14
LOG9KW Loganair 9 2026-06-16
LOG9CX Loganair 9 2026-06-15
LOG8BI - 9 2026-06-24
LOG4ZH Loganair 9 2026-06-24
LOG3HP - 9 2026-06-25
LOG2FD Loganair 9 2026-06-24
LOG29JK - 9 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LOG17XY LDY → GLA Jul 26, 19:45 UTCJul 26, 20:15 UTC30m
2026-07-26 LOG9AW GLA → LDY Jul 26, 18:35 UTCJul 26, 18:55 UTC20m
2026-07-26 LOG54HJ BEB → GLA Jul 26, 17:05 UTCJul 26, 17:25 UTC20m
2026-07-26 LOG81BJ GLA → BEB Jul 26, 15:25 UTCJul 26, 15:50 UTC25m
2026-07-26 LOG43YD SYY → GLA Jul 26, 14:00 UTCJul 26, 14:25 UTC25m
2026-07-26 LOG75GR GLA → SYY Jul 26, 12:30 UTCJul 26, 12:55 UTC25m
2026-07-25 LOG43YD - Jul 25, 14:15 UTCJul 25, 14:40 UTC25m
2026-07-25 LOG75GR GLA → SYY Jul 25, 12:40 UTCJul 25, 13:05 UTC25m
2026-07-25 LOG39GA BEB → GLA Jul 25, 11:00 UTCJul 25, 11:20 UTC20m
2026-07-25 LOG25CH GLA → BEB Jul 25, 09:30 UTCJul 25, 09:55 UTC25m
2026-07-25 LOG28CN SYY → GLA Jul 25, 08:10 UTCJul 25, 08:40 UTC30m
2026-07-25 LOG32MW GLA → SYY Jul 25, 06:25 UTCJul 25, 06:50 UTC25m
2026-07-24 LOG27VC SYY → GLA Jul 24, 18:40 UTCJul 24, 19:05 UTC25m
2026-07-24 LOG64AN - Jul 24, 17:15 UTCJul 24, 17:40 UTC25m
2026-07-24 LOG26VG - Jul 24, 15:40 UTCJul 24, 15:55 UTC15m
2026-07-24 LOG47ZL - Jul 24, 13:55 UTCJul 24, 14:20 UTC25m
2026-07-24 LOG39GA BEB → GLA Jul 24, 10:35 UTCJul 24, 11:00 UTC25m
2026-07-24 LOG25CH GLA → BEB Jul 24, 09:05 UTCJul 24, 09:30 UTC25m
2026-07-24 LOG28CN SYY → GLA Jul 24, 07:50 UTCJul 24, 08:15 UTC25m
2026-07-24 LOG32MW GLA → SYY Jul 24, 06:20 UTCJul 24, 06:45 UTC25m
2026-07-23 LOG27VC - Jul 23, 18:40 UTCJul 23, 19:05 UTC25m
2026-07-23 LOG64AN - Jul 23, 17:10 UTCJul 23, 17:35 UTC25m
2026-07-23 LOG26VG - Jul 23, 15:30 UTCJul 23, 15:55 UTC25m
2026-07-23 LOG47ZL - Jul 23, 13:55 UTCJul 23, 14:20 UTC25m
2026-07-23 LOG17XY LDY → GLA Jul 23, 09:40 UTCJul 23, 10:15 UTC35m
2026-07-23 LOG52L LDY → LHR Jul 23, 07:55 UTCJul 23, 09:00 UTC1h 5m
2026-07-23 LOG51D LDY → STN Jul 23, 05:30 UTCJul 23, 06:40 UTC1h 10m
2026-07-22 LOG93Y STN → LDY Jul 22, 19:50 UTCJul 22, 20:50 UTC1h 0m
2026-07-22 LOG92W LDY → STN Jul 22, 17:45 UTCJul 22, 18:50 UTC1h 5m
2026-07-22 LOG4MU - Jul 22, 16:05 UTCJul 22, 17:05 UTC1h 0m
2026-07-22 LOG18D - Jul 22, 13:05 UTCJul 22, 14:20 UTC1h 15m
2026-07-21 LOG93Y STN → LDY Jul 21, 19:35 UTCJul 21, 20:35 UTC1h 0m
2026-07-21 LOG92W LDY → STN Jul 21, 17:25 UTCJul 21, 18:35 UTC1h 10m
2026-07-21 LOG4MU - Jul 21, 15:40 UTCJul 21, 16:40 UTC1h 0m
2026-07-21 LOG18D - Jul 21, 13:05 UTCJul 21, 14:05 UTC1h 0m
2026-07-21 LOG52L LDY → LHR Jul 21, 08:25 UTCJul 21, 09:25 UTC1h 0m
2026-07-21 LOG51D LDY → STN Jul 21, 05:35 UTCJul 21, 06:45 UTC1h 10m
2026-07-20 LOG93Y STN → LDY Jul 20, 19:35 UTCJul 20, 20:40 UTC1h 5m
2026-07-20 LOG92W - Jul 20, 17:20 UTCJul 20, 18:35 UTC1h 15m
2026-07-20 LOG4MU - Jul 20, 15:35 UTCJul 20, 16:40 UTC1h 5m
2026-07-20 LOG18D - Jul 20, 13:05 UTCJul 20, 14:05 UTC1h 0m
2026-07-20 LOG9AW - Jul 20, 11:30 UTCJul 20, 11:50 UTC20m
2026-07-20 LOG17XY - Jul 20, 10:10 UTCJul 20, 10:40 UTC30m
2026-07-20 LOG52L LDY → LHR Jul 20, 08:15 UTCJul 20, 09:15 UTC1h 0m
2026-07-20 LOG51D LDY → STN Jul 20, 05:40 UTCJul 20, 06:45 UTC1h 5m
2026-07-19 LOG93Y STN → LDY Jul 19, 19:50 UTCJul 19, 20:55 UTC1h 5m
2026-07-19 LOG92W - Jul 19, 17:45 UTCJul 19, 18:55 UTC1h 10m
2026-07-19 LOG4MU - Jul 19, 16:00 UTCJul 19, 17:00 UTC1h 0m
2026-07-19 LOG18D - Jul 19, 13:00 UTCJul 19, 14:20 UTC1h 20m
2026-07-19 LOG52L - Jul 19, 10:40 UTCJul 19, 11:55 UTC1h 15m

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

Mode-S 400846 frequently asked

What is Mode-S code 400846?
400846 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-SAJN.
Where is Mode-S 400846 registered?
Mode-S code 400846 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 400846 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400846, octal 20004106, decimal 4,196,422.
What flights does 400846 operate?
Mode-S 400846 has broadcast 20 distinct callsigns, including LOG52L, LOG4MU, LOG51D, LOG18D, LOG93Y.