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 43m ago
Flights observed
550
Distinct callsigns
20
Country
GB
Last broadcast
43m 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
LOG8ML - 25 2026-07-13
LOG71Y - 25 2026-07-13
LOG47RC Loganair 23 2026-06-13
LOG18FR Loganair 21 2026-06-13
LOG82HT Loganair 20 2026-06-13
LOG7NC - 20 2026-07-14
LOG74H - 20 2026-07-12
LOG9CT - 19 2026-07-12
LOG71DP - 18 2026-06-13
LOG581H - 18 2026-07-14
LOG23CG - 17 2026-07-14
LOG96LP Loganair 16 2026-06-10
LOG53GT - 16 2026-07-14
LOG42YM Loganair 16 2026-06-12
LOG10HF Loganair 16 2026-06-10
LOG49FW Loganair 15 2026-06-12
LOG556N - 14 2026-07-12
LOG555 - 14 2026-07-12
LOG72MV Loganair 13 2026-06-01
LOG53MA Loganair 13 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 LOG62TM EMA → JER Jul 14, 15:15 UTCJul 14, 16:15 UTC1h 0m
2026-07-14 LOG33LJ - Jul 14, 13:10 UTCJul 14, 14:10 UTC1h 0m
2026-07-14 LOG53GT EXT → JER Jul 14, 11:05 UTCJul 14, 11:35 UTC30m
2026-07-14 LOG23CG JER → EXT Jul 14, 09:50 UTCJul 14, 10:25 UTC35m
2026-07-14 LOG7NC - Jul 14, 08:05 UTCJul 14, 08:50 UTC45m
2026-07-14 LOG581H JER → BRS Jul 14, 06:20 UTCJul 14, 07:05 UTC45m
2026-07-13 LOG62TM EMA → JER Jul 13, 16:40 UTCJul 13, 17:45 UTC1h 5m
2026-07-13 LOG33LJ - Jul 13, 14:50 UTCJul 13, 15:55 UTC1h 5m
2026-07-13 LOG8VM BOD → JER Jul 13, 12:50 UTCJul 13, 14:05 UTC1h 15m
2026-07-13 LOG4FQ JER → BOD Jul 13, 08:55 UTCJul 13, 10:50 UTC1h 55m
2026-07-13 LOG71Y - Jul 13, 07:30 UTCJul 13, 08:10 UTC40m
2026-07-13 LOG8ML JER → SOU Jul 13, 06:20 UTCJul 13, 06:50 UTC30m
2026-07-12 LOG74H SOU → JER Jul 12, 19:30 UTCJul 12, 20:05 UTC35m
2026-07-12 LOG9CT - Jul 12, 18:05 UTCJul 12, 18:40 UTC35m
2026-07-12 LOG556N SOU → JER Jul 12, 16:50 UTCJul 12, 17:25 UTC35m
2026-07-12 LOG555 - Jul 12, 15:20 UTCJul 12, 15:55 UTC35m
2026-07-12 LOG5AH CDG → JER Jul 12, 13:35 UTCJul 12, 14:30 UTC55m
2026-07-12 LOG14NM JER → CDG Jul 12, 11:30 UTCJul 12, 12:20 UTC50m
2026-07-12 LOG71Y SOU → JER Jul 12, 10:01 UTCJul 12, 10:35 UTC35m
2026-07-12 LOG8ML JER → SOU Jul 12, 07:25 UTCJul 12, 08:01 UTC35m
2026-07-11 LOG796A GCI → JER Jul 11, 16:10 UTCJul 11, 16:20 UTC10m
2026-07-11 LOG796 ZRH → GCI Jul 11, 13:10 UTCJul 11, 15:10 UTC2h 0m
2026-07-11 LOG795 - Jul 11, 09:50 UTCJul 11, 11:50 UTC2h 0m
2026-07-11 LOG795A - Jul 11, 08:55 UTCJul 11, 09:10 UTC15m
2026-07-11 LOG71Y SOU → JER Jul 11, 07:35 UTCJul 11, 08:10 UTC35m
2026-07-11 LOG8ML JER → SOU Jul 11, 06:05 UTCJul 11, 06:35 UTC30m
2026-07-10 LOG71DM BRS → JER Jul 10, 18:40 UTCJul 10, 19:25 UTC45m
2026-07-10 LOG8HM JER → BRS Jul 10, 17:10 UTCJul 10, 17:55 UTC45m
2026-07-10 LOG62TM EMA → JER Jul 10, 15:15 UTCJul 10, 16:15 UTC1h 0m
2026-07-10 LOG33LJ - Jul 10, 13:20 UTCJul 10, 14:25 UTC1h 5m
2026-07-10 LOG8VM BOD → JER Jul 10, 11:05 UTCJul 10, 12:15 UTC1h 10m
2026-07-10 LOG4FQ JER → BOD Jul 10, 08:55 UTCJul 10, 10:10 UTC1h 15m
2026-07-10 LOG71Y SOU → JER Jul 10, 07:45 UTCJul 10, 08:20 UTC35m
2026-07-10 LOG8ML - Jul 10, 06:25 UTCJul 10, 06:55 UTC30m
2026-07-09 LOG74H SOU → JER Jul 9, 19:00 UTCJul 9, 19:35 UTC35m
2026-07-09 LOG9CT JER → SOU Jul 9, 17:35 UTCJul 9, 18:10 UTC35m
2026-07-09 LOG556N SOU → JER Jul 9, 16:05 UTCJul 9, 16:40 UTC35m
2026-07-09 LOG555 JER → SOU Jul 9, 14:40 UTCJul 9, 15:15 UTC35m
2026-07-09 LOG5AH - Jul 9, 11:00 UTCJul 9, 12:00 UTC1h 0m
2026-07-09 LOG14NM - Jul 9, 09:10 UTCJul 9, 10:00 UTC50m
2026-07-09 LOG71Y SOU → JER Jul 9, 07:35 UTCJul 9, 08:10 UTC35m
2026-07-09 LOG8ML - Jul 9, 06:10 UTCJul 9, 06:45 UTC35m
2026-07-08 LOG62TM EMA → JER Jul 8, 15:10 UTCJul 8, 16:10 UTC1h 0m
2026-07-08 LOG33LJ JER → EMA Jul 8, 13:20 UTCJul 8, 14:25 UTC1h 5m
2026-07-08 LOG53GT - Jul 8, 10:45 UTCJul 8, 11:15 UTC30m
2026-07-08 LOG23CG - Jul 8, 09:25 UTCJul 8, 10:05 UTC40m
2026-07-08 LOG7NC BRS → JER Jul 8, 08:00 UTCJul 8, 08:45 UTC45m
2026-07-08 LOG581H JER → BRS Jul 8, 06:25 UTCJul 8, 07:10 UTC45m
2026-07-07 LOG71DM - Jul 7, 18:40 UTCJul 7, 19:25 UTC45m
2026-07-07 LOG8HM - Jul 7, 17:10 UTCJul 7, 18:00 UTC50m

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 43m 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 LOG8ML, LOG71Y, LOG47RC, LOG18FR, LOG82HT.