Apparatus

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sensors Mode-S transponder

406DCE

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-LMRD · ATR-42-500

Hex
406DCE
Octal
20066716
Decimal
4,222,414
Country
GB
Tail
G-LMRD
Type
AT45
No current signal · last broadcast Jul 26, 20:10 UTC
Flights observed
405
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 20:10 UTC

Last known position

Most recent position reported by Mode-S 406DCE.

Country allocation

The ICAO 24-bit address 406DCE 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
LOG2WF Loganair 42 2026-07-26
LOG26PQ Loganair 35 2026-07-25
LOG17ZA Loganair 35 2026-07-23
LOG34CF Loganair 26 2026-07-25
LOG56LK - 17 2026-07-08
LOG78LC Loganair 15 2026-07-23
LOG29JK Loganair 15 2026-07-26
LOG17DN Loganair 15 2026-07-23
LOG82WR - 14 2026-07-03
LOG65KL - 14 2026-07-05
LOG28RW - 14 2026-07-03
LOG59QN - 12 2026-07-16
LOG12BK - 10 2026-07-16
LOG8MU Loganair 9 2026-07-26
LOG1DL - 9 2026-07-03
LOG8BI Loganair 8 2026-07-25
LOG33B Loganair 8 2026-07-26
LOG2LD - 8 2026-07-03
LOG93YE Loganair 7 2026-07-25
LOG8JZ Loganair 7 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LOG2WF MAN → INV Jul 26, 19:00 UTCJul 26, 20:10 UTC1h 10m
2026-07-26 LOG8MU INV → MAN Jul 26, 16:55 UTCJul 26, 17:55 UTC1h 0m
2026-07-26 LOG4CQ KOI → INV Jul 26, 15:30 UTCJul 26, 15:55 UTC25m
2026-07-26 LOG8JZ INV → KOI Jul 26, 12:05 UTCJul 26, 12:25 UTC20m
2026-07-26 LOG33B EDI → CWL Jul 26, 10:25 UTCJul 26, 11:20 UTC55m
2026-07-26 LOG29JK INV → BHD Jul 26, 08:50 UTCJul 26, 09:35 UTC45m
2026-07-25 LOG8BI BHD → INV Jul 25, 17:40 UTCJul 25, 18:30 UTC50m
2026-07-25 LOG29JK INV → BHD Jul 25, 16:10 UTCJul 25, 16:55 UTC45m
2026-07-25 LOG34CF KOI → INV Jul 25, 15:00 UTCJul 25, 15:25 UTC25m
2026-07-25 LOG44BM BGO → LSI Jul 25, 11:50 UTCJul 25, 12:15 UTC25m
2026-07-25 LOG93YE LSI → BGO Jul 25, 10:25 UTCJul 25, 11:00 UTC35m
2026-07-25 LOG26PQ INV → KOI Jul 25, 07:55 UTCJul 25, 08:15 UTC20m
2026-07-24 LOG855P - Jul 24, 12:25 UTCJul 24, 12:45 UTC20m
2026-07-24 LOG55S LSI → ABZ Jul 24, 11:20 UTCJul 24, 11:50 UTC30m
2026-07-24 LOG54S ABZ → LSI Jul 24, 08:15 UTCJul 24, 08:40 UTC25m
2026-07-24 LOG854P SYY → GLA Jul 24, 06:10 UTCJul 24, 06:30 UTC20m
2026-07-23 LOG2WF MAN → INV Jul 23, 19:05 UTCJul 23, 20:10 UTC1h 5m
2026-07-23 LOG17ZA INV → MAN Jul 23, 17:00 UTCJul 23, 18:05 UTC1h 5m
2026-07-23 LOG78LC MAN → NQY Jul 23, 15:50 UTCJul 23, 16:00 UTC10m
2026-07-23 LOG17DN INV → SYY Jul 23, 14:35 UTCJul 23, 14:45 UTC10m
2026-07-23 LOG855P - Jul 23, 11:50 UTCJul 23, 12:10 UTC20m
2026-07-23 LOG55S LSI → ABZ Jul 23, 10:45 UTCJul 23, 11:10 UTC25m
2026-07-23 LOG54S ABZ → LSI Jul 23, 07:25 UTCJul 23, 07:45 UTC20m
2026-07-23 LOG854P SYY → GLA Jul 23, 06:15 UTCJul 23, 06:35 UTC20m
2026-07-22 LOG2WF MAN → INV Jul 22, 18:55 UTCJul 22, 20:00 UTC1h 5m
2026-07-22 LOG17ZA INV → MAN Jul 22, 16:55 UTCJul 22, 17:55 UTC1h 0m
2026-07-22 LOG17DN INV → SYY Jul 22, 14:40 UTCJul 22, 14:50 UTC10m
2026-07-22 LOG855P - Jul 22, 12:40 UTCJul 22, 12:55 UTC15m
2026-07-22 LOG55S LSI → ABZ Jul 22, 11:35 UTCJul 22, 12:00 UTC25m
2026-07-21 LOG2WF MAN → INV Jul 21, 19:10 UTCJul 21, 20:15 UTC1h 5m
2026-07-21 LOG17ZA - Jul 21, 16:55 UTCJul 21, 17:55 UTC1h 0m
2026-07-21 LOG17DN INV → SYY Jul 21, 14:40 UTCJul 21, 14:50 UTC10m
2026-07-21 LOG855P - Jul 21, 12:30 UTCJul 21, 12:45 UTC15m
2026-07-21 LOG55S LSI → ABZ Jul 21, 11:25 UTCJul 21, 11:55 UTC30m
2026-07-21 LOG54S ABZ → LSI Jul 21, 08:05 UTCJul 21, 08:35 UTC30m
2026-07-21 LOG854P SYY → GLA Jul 21, 06:05 UTCJul 21, 06:30 UTC25m
2026-07-20 LOG2WF MAN → INV Jul 20, 19:00 UTCJul 20, 20:10 UTC1h 10m
2026-07-20 LOG17ZA - Jul 20, 16:50 UTCJul 20, 17:50 UTC1h 0m
2026-07-20 LOG78LC - Jul 20, 15:50 UTCJul 20, 16:00 UTC10m
2026-07-20 LOG855P - Jul 20, 11:35 UTCJul 20, 11:55 UTC20m
2026-07-20 LOG55S - Jul 20, 10:25 UTCJul 20, 10:50 UTC25m
2026-07-20 LOG54S - Jul 20, 07:35 UTCJul 20, 07:55 UTC20m
2026-07-20 LOG854P SYY → GLA Jul 20, 06:15 UTCJul 20, 06:40 UTC25m
2026-07-19 LOG2WF MAN → INV Jul 19, 19:20 UTCJul 19, 20:25 UTC1h 5m
2026-07-19 LOG8MU INV → MAN Jul 19, 16:55 UTCJul 19, 18:00 UTC1h 5m
2026-07-19 LOG4CQ - Jul 19, 15:40 UTCJul 19, 15:55 UTC15m
2026-07-19 LOG8JZ - Jul 19, 12:40 UTCJul 19, 13:45 UTC1h 5m
2026-07-19 LOG33B EDI → CWL Jul 19, 10:40 UTCJul 19, 11:50 UTC1h 10m
2026-07-19 LOG29JK INV → BHD Jul 19, 08:25 UTCJul 19, 09:15 UTC50m
2026-07-18 LOG8BI - Jul 18, 17:10 UTCJul 18, 18:20 UTC1h 10m

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

Mode-S 406DCE frequently asked

What is Mode-S code 406DCE?
406DCE is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LMRD.
Where is Mode-S 406DCE registered?
Mode-S code 406DCE 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 406DCE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406DCE, octal 20066716, decimal 4,222,414.
What flights does 406DCE operate?
Mode-S 406DCE has broadcast 20 distinct callsigns, including LOG2WF, LOG26PQ, LOG17ZA, LOG34CF, LOG56LK.