Apparatus

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sensors Mode-S transponder

408251

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
408251
Octal
20101121
Decimal
4,227,665
Country
GB
Tail
G-LMTJ
Type
AT76
No current signal · last broadcast 1h ago
Flights observed
312
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 408251.

Country allocation

The ICAO 24-bit address 408251 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
LOG7NC Loganair 16 2026-05-04
LOG8ML Loganair 15 2026-05-04
LOG74H Loganair 15 2026-05-03
LOG71Y Loganair 15 2026-05-04
LOG9CT Loganair 14 2026-05-03
LOG581H Loganair 14 2026-05-04
LOG96LP Loganair 13 2026-05-24
LOG47RC Loganair 13 2026-05-29
LOG23CG Loganair 13 2026-05-04
LOG10HF Loganair 13 2026-05-24
LOG82HT Loganair 12 2026-05-30
LOG72MV Loganair 12 2026-05-24
LOG71DP Loganair 12 2026-05-30
LOG53MA Loganair 12 2026-05-24
LOG53GT Loganair 12 2026-05-02
LOG18FR Loganair 12 2026-05-29
LOG87YU Loganair 11 2026-05-23
LOG41EG Loganair 11 2026-05-23
LOG556N Loganair 9 2026-05-01
LOG555 Loganair 9 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 LOG82HT LSI → EDI May 30, 10:00 UTCMay 30, 10:15 UTC15m
2026-05-30 LOG71DP EDI → LSI May 30, 06:45 UTCMay 30, 07:25 UTC40m
2026-05-29 LOG49FW LSI → EDI May 29, 18:25 UTCMay 29, 19:05 UTC40m
2026-05-29 LOG42YM EDI → LSI May 29, 15:55 UTCMay 29, 16:35 UTC40m
2026-05-29 LOG47RC EXT → EDI May 29, 13:00 UTCMay 29, 14:30 UTC1h 30m
2026-05-29 LOG18FR EDI → EXT May 29, 10:30 UTCMay 29, 11:55 UTC1h 25m
2026-05-29 LOG82HT LSI → EDI May 29, 08:50 UTCMay 29, 09:30 UTC40m
2026-05-29 LOG71DP EDI → LSI May 29, 06:25 UTCMay 29, 07:00 UTC35m
2026-05-28 LOG49FW LSI → EDI May 28, 18:25 UTCMay 28, 19:05 UTC40m
2026-05-28 LOG42YM EDI → LSI May 28, 16:05 UTCMay 28, 16:45 UTC40m
2026-05-28 LOG47RC EXT → EDI May 28, 12:35 UTCMay 28, 13:55 UTC1h 20m
2026-05-28 LOG18FR EDI → EXT May 28, 10:20 UTCMay 28, 11:55 UTC1h 35m
2026-05-28 LOG82HT LSI → EDI May 28, 08:20 UTCMay 28, 09:10 UTC50m
2026-05-28 LOG71DP EDI → LSI May 28, 06:10 UTCMay 28, 06:50 UTC40m
2026-05-27 LOG49FW LSI → EDI May 27, 18:05 UTCMay 27, 18:45 UTC40m
2026-05-27 LOG42YM EDI → LSI May 27, 16:00 UTCMay 27, 16:35 UTC35m
2026-05-27 LOG47RC EXT → EDI May 27, 12:55 UTCMay 27, 14:15 UTC1h 20m
2026-05-27 LOG18FR EDI → EXT May 27, 10:15 UTCMay 27, 11:40 UTC1h 25m
2026-05-27 LOG82HT LSI → EDI May 27, 08:25 UTCMay 27, 09:00 UTC35m
2026-05-27 LOG71DP EDI → LSI May 27, 06:04 UTCMay 27, 06:40 UTC35m
2026-05-26 LOG49FW LSI → EDI May 26, 18:55 UTCMay 26, 19:40 UTC45m
2026-05-26 LOG42YM EDI → LSI May 26, 16:20 UTCMay 26, 17:09 UTC50m
2026-05-26 LOG47RC EXT → EDI May 26, 12:45 UTCMay 26, 14:09 UTC1h 25m
2026-05-26 LOG18FR EDI → EXT May 26, 10:20 UTCMay 26, 11:44 UTC1h 25m
2026-05-26 LOG82HT LSI → EDI May 26, 08:34 UTCMay 26, 09:19 UTC45m
2026-05-26 LOG71DP EDI → LSI May 26, 06:10 UTCMay 26, 06:54 UTC45m
2026-05-25 LOG49FW LSI → EDI May 25, 18:35 UTCMay 25, 19:25 UTC49m
2026-05-25 LOG42YM EDI → LSI May 25, 16:10 UTCMay 25, 17:00 UTC50m
2026-05-25 LOG47RC EXT → EDI May 25, 13:15 UTCMay 25, 14:35 UTC1h 20m
2026-05-25 LOG18FR EDI → EXT May 25, 10:50 UTCMay 25, 12:15 UTC1h 25m
2026-05-25 LOG82HT LSI → EDI May 25, 08:50 UTCMay 25, 09:45 UTC55m
2026-05-25 LOG71DP EDI → LSI May 25, 06:50 UTCMay 25, 07:30 UTC40m
2026-05-24 LOG53MA KOI → EDI May 24, 19:05 UTCMay 24, 19:45 UTC40m
2026-05-24 LOG72MV EDI → KOI May 24, 17:10 UTCMay 24, 17:45 UTC35m
2026-05-24 LOG10HF SYY → EDI May 24, 15:45 UTCMay 24, 16:20 UTC35m
2026-05-24 LOG17DN INV → SYY May 24, 14:20 UTCMay 24, 14:30 UTC10m
2026-05-24 LOG96LP EDI → SYY May 24, 11:10 UTCMay 24, 11:45 UTC35m
2026-05-23 LOG87YU KOI → EDI May 23, 15:30 UTCMay 23, 16:15 UTC45m
2026-05-23 LOG41EG EDI → KOI May 23, 13:25 UTCMay 23, 14:00 UTC35m
2026-05-23 LOG10HF SYY → EDI May 23, 11:40 UTCMay 23, 12:25 UTC45m
2026-05-23 LOG41CK INV → SYY May 23, 10:15 UTCMay 23, 10:25 UTC10m
2026-05-23 LOG96LP EDI → SYY May 23, 07:30 UTCMay 23, 08:10 UTC40m
2026-05-22 LOG53MA KOI → EDI May 22, 18:15 UTCMay 22, 18:55 UTC40m
2026-05-22 LOG72MV EDI → KOI May 22, 16:30 UTCMay 22, 17:05 UTC35m
2026-05-22 LOG10HF SYY → EDI May 22, 11:35 UTCMay 22, 12:05 UTC30m
2026-05-22 LOG96LP EDI → SYY May 22, 09:40 UTCMay 22, 10:15 UTC35m
2026-05-22 LOG87YU KOI → EDI May 22, 08:10 UTCMay 22, 08:50 UTC40m
2026-05-22 LOG41EG EDI → KOI May 22, 06:20 UTCMay 22, 06:55 UTC35m
2026-05-21 LOG53MA KOI → EDI May 21, 18:35 UTCMay 21, 19:10 UTC35m
2026-05-21 LOG72MV EDI → KOI May 21, 16:40 UTCMay 21, 17:15 UTC35m

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

Mode-S 408251 frequently asked

What is Mode-S code 408251?
408251 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LMTJ.
Where is Mode-S 408251 registered?
Mode-S code 408251 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 408251 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408251, octal 20101121, decimal 4,227,665.
What flights does 408251 operate?
Mode-S 408251 has broadcast 20 distinct callsigns, including LOG7NC, LOG8ML, LOG74H, LOG71Y, LOG9CT.