Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

406C43

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-LCYU · EMBRAER ERJ-190-100

Hex
406C43
Octal
20066103
Decimal
4,222,019
Country
GB
Tail
G-LCYU
Type
E190
No current signal · last broadcast 1h ago
Flights observed
465
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 406C43.

Country allocation

The ICAO 24-bit address 406C43 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
CFE3271 - 11 2026-07-06
CFE1LJ - 9 2026-07-05
CFE389 BA CityFlyer 7 2026-07-03
CFE89W BA CityFlyer 6 2026-06-12
CFE844 - 6 2026-07-14
CFE62N - 6 2026-07-14
CFE60M BA CityFlyer 6 2026-06-12
CFE53A - 6 2026-07-09
CFE36Y - 6 2026-07-14
CFE33T - 6 2026-06-29
CFE31L - 6 2026-06-29
CFE301 - 6 2026-07-08
CFE1ZF - 6 2026-07-03
CFE102 - 6 2026-07-14
CFE95E - 5 2026-07-13
CFE909 - 5 2026-06-12
CFE8712 - 5 2026-06-30
CFE736 BA CityFlyer 5 2026-06-13
CFE705 - 5 2026-07-03
CFE6LJ - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CFE36Y LIN → LCY Jul 14, 18:55 UTCJul 14, 20:30 UTC1h 35m
2026-07-14 CFE844 LCY → LIN Jul 14, 16:05 UTCJul 14, 17:30 UTC1h 25m
2026-07-14 CFE102 - Jul 14, 13:40 UTCJul 14, 14:50 UTC1h 10m
2026-07-14 CFE62N - Jul 14, 11:30 UTCJul 14, 12:25 UTC55m
2026-07-14 CFE801 LIN → LCY Jul 14, 08:55 UTCJul 14, 10:30 UTC1h 35m
2026-07-14 CFE92Q LCY → LIN Jul 14, 06:10 UTCJul 14, 07:35 UTC1h 25m
2026-07-13 CFE557 DUB → LCY Jul 13, 19:20 UTCJul 13, 20:15 UTC55m
2026-07-13 CFE37E - Jul 13, 17:20 UTCJul 13, 18:15 UTC55m
2026-07-13 CFE6LJ - Jul 13, 15:10 UTCJul 13, 16:15 UTC1h 5m
2026-07-13 CFE95E - Jul 13, 12:55 UTCJul 13, 13:50 UTC55m
2026-07-13 CFE61T RTM → LCY Jul 13, 11:00 UTCJul 13, 11:40 UTC40m
2026-07-13 CFE75V LCY → RTM Jul 13, 09:05 UTCJul 13, 09:45 UTC40m
2026-07-13 CFE9760 SEN → LCY Jul 13, 07:30 UTCJul 13, 07:50 UTC20m
2026-07-12 CFE316 IBZ → SEN Jul 12, 19:35 UTCJul 12, 21:35 UTC2h 0m
2026-07-12 CFE7309 STN → IBZ Jul 12, 16:20 UTCJul 12, 18:35 UTC2h 15m
2026-07-12 CFE118 - Jul 12, 12:35 UTCJul 12, 14:45 UTC2h 10m
2026-07-12 CFE882 - Jul 12, 09:55 UTCJul 12, 11:35 UTC1h 40m
2026-07-11 CFE9767 AHO → STN Jul 11, 19:30 UTCJul 11, 21:40 UTC2h 10m
2026-07-11 CFE42A - Jul 11, 13:45 UTCJul 11, 16:05 UTC2h 20m
2026-07-11 CFE7308 IBZ → STN Jul 11, 09:15 UTCJul 11, 11:30 UTC2h 15m
2026-07-11 CFE63BB LCY → IBZ Jul 11, 06:01 UTCJul 11, 08:05 UTC2h 5m
2026-07-10 CFE25C - Jul 10, 13:35 UTCJul 10, 16:55 UTC3h 20m
2026-07-10 CFE64H - Jul 10, 09:00 UTCJul 10, 12:15 UTC3h 15m
2026-07-10 CFE9764 - Jul 10, 07:45 UTCJul 10, 08:00 UTC15m
2026-07-09 CFE322 GLA → SEN Jul 9, 21:00 UTCJul 9, 22:05 UTC1h 5m
2026-07-09 CFE8724 - Jul 9, 16:30 UTCJul 9, 17:25 UTC55m
2026-07-09 CFE4MW - Jul 9, 12:40 UTCJul 9, 15:00 UTC2h 20m
2026-07-09 CFE23DB - Jul 9, 08:55 UTCJul 9, 11:25 UTC2h 30m
2026-07-09 CFE53A - Jul 9, 06:00 UTCJul 9, 07:00 UTC1h 0m
2026-07-08 CFE301 - Jul 8, 18:00 UTCJul 8, 18:55 UTC55m
2026-07-08 CFE939 LIN → LCY Jul 8, 15:15 UTCJul 8, 16:45 UTC1h 30m
2026-07-08 CFE03C LCY → LIN Jul 8, 12:45 UTCJul 8, 14:15 UTC1h 30m
2026-07-08 CFE74H EDI → LCY Jul 8, 09:55 UTCJul 8, 11:10 UTC1h 15m
2026-07-08 CFE5C LCY → EDI Jul 8, 07:55 UTCJul 8, 08:55 UTC1h 0m
2026-07-08 CFE6Z EDI → LCY Jul 8, 05:30 UTCJul 8, 06:35 UTC1h 5m
2026-07-07 CFE78PG LCY → EDI Jul 7, 18:55 UTCJul 7, 19:55 UTC1h 0m
2026-07-07 CFE908 EDI → LCY Jul 7, 16:55 UTCJul 7, 17:55 UTC1h 0m
2026-07-07 CFE561 EDI → LCY Jul 7, 15:00 UTCJul 7, 16:00 UTC1h 0m
2026-07-07 CFE25C - Jul 7, 10:40 UTCJul 7, 13:50 UTC3h 10m
2026-07-07 CFE64H - Jul 7, 06:35 UTCJul 7, 09:20 UTC2h 45m
2026-07-06 CFE8FN NCE → LCY Jul 6, 18:35 UTCJul 6, 20:10 UTC1h 35m
2026-07-06 CFE3299 LCY → NCE Jul 6, 15:45 UTCJul 6, 17:25 UTC1h 40m
2026-07-06 CFE7026 - Jul 6, 12:30 UTCJul 6, 14:00 UTC1h 30m
2026-07-06 CFE27PM LCY → BER Jul 6, 10:05 UTCJul 6, 11:30 UTC1h 25m
2026-07-06 CFE3271 MAD → LCY Jul 6, 05:55 UTCJul 6, 07:50 UTC1h 55m
2026-07-05 CFE1LJ - Jul 5, 18:30 UTCJul 5, 20:25 UTC1h 55m
2026-07-05 CFE65GM NCE → LCY Jul 5, 15:35 UTCJul 5, 17:15 UTC1h 40m
2026-07-05 CFE41R LCY → NCE Jul 5, 11:45 UTCJul 5, 13:30 UTC1h 45m
2026-07-04 CFE94H - Jul 4, 09:20 UTCJul 4, 11:15 UTC1h 55m
2026-07-04 CFE8747 - Jul 4, 06:25 UTCJul 4, 07:50 UTC1h 25m

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

Mode-S 406C43 frequently asked

What is Mode-S code 406C43?
406C43 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LCYU.
Where is Mode-S 406C43 registered?
Mode-S code 406C43 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 406C43 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 406C43, octal 20066103, decimal 4,222,019.
What flights does 406C43 operate?
Mode-S 406C43 has broadcast 20 distinct callsigns, including CFE3271, CFE1LJ, CFE389, CFE89W, CFE844.