Apparatus

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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
Broadcasting now · callsign CFE2906 · 36,000 ft
Flights observed
519
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 19:30 UTC

Current position

406C43 is currently broadcasting. Map zoomed to live position.

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
CFE8712 BA CityFlyer 7 2026-07-17
CFE844 BA CityFlyer 7 2026-07-24
CFE736 BA CityFlyer 7 2026-07-19
CFE389 BA CityFlyer 7 2026-07-03
CFE36Y BA CityFlyer 7 2026-07-24
CFE1TJ BA CityFlyer 7 2026-07-21
CFE17Z BA CityFlyer 7 2026-07-19
CFE89W BA CityFlyer 6 2026-06-12
CFE62N - 6 2026-07-14
CFE60M BA CityFlyer 6 2026-06-12
CFE53A - 6 2026-07-09
CFE35L BA CityFlyer 6 2026-07-26
CFE34H BA CityFlyer 6 2026-07-21
CFE33T - 6 2026-06-29
CFE31L - 6 2026-06-29
CFE301 - 6 2026-07-08
CFE2L - 6 2026-07-16
CFE2GH - 6 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CFE8495 LCY → BER Jul 26, 18:10 UTCJul 26, 19:30 UTC1h 20m
2026-07-26 CFE68E EAS → LCY Jul 26, 15:55 UTCJul 26, 17:20 UTC1h 25m
2026-07-26 CFE35L LCY → EAS Jul 26, 13:20 UTCJul 26, 14:30 UTC1h 10m
2026-07-26 CFE54M SKG → LCY Jul 26, 09:00 UTCJul 26, 12:15 UTC3h 15m
2026-07-25 CFE9AG LCY → SKG Jul 25, 12:00 UTCJul 25, 14:50 UTC2h 50m
2026-07-25 CFE71LK EGC → LCY Jul 25, 09:10 UTCJul 25, 10:30 UTC1h 20m
2026-07-25 CFE408 LCY → EGC Jul 25, 06:50 UTCJul 25, 08:00 UTC1h 10m
2026-07-24 CFE36Y LIN → LCY Jul 24, 18:40 UTCJul 24, 20:05 UTC1h 25m
2026-07-24 CFE844 LCY → LIN Jul 24, 16:15 UTCJul 24, 17:45 UTC1h 30m
2026-07-24 CFE68E EAS → LCY Jul 24, 13:50 UTCJul 24, 15:10 UTC1h 20m
2026-07-24 CFE35L LCY → EAS Jul 24, 11:05 UTCJul 24, 12:35 UTC1h 30m
2026-07-24 CFE74H EDI → LCY Jul 24, 09:05 UTCJul 24, 10:10 UTC1h 5m
2026-07-23 CFE787 LCY → EDI Jul 23, 18:20 UTCJul 23, 19:15 UTC55m
2026-07-23 CFE99B EDI → LCY Jul 23, 15:25 UTCJul 23, 16:25 UTC1h 0m
2026-07-23 CFE98G LCY → EDI Jul 23, 13:30 UTCJul 23, 14:30 UTC1h 0m
2026-07-23 CFE71KL - Jul 23, 11:05 UTCJul 23, 12:20 UTC1h 15m
2026-07-23 CFE408 LCY → EGC Jul 23, 08:50 UTCJul 23, 09:55 UTC1h 5m
2026-07-23 CFE73YU GLA → LCY Jul 23, 05:45 UTCJul 23, 06:55 UTC1h 10m
2026-07-22 CFE93G LCY → GLA Jul 22, 18:50 UTCJul 22, 19:50 UTC1h 0m
2026-07-22 CFE8FN NCE → LCY Jul 22, 16:20 UTCJul 22, 18:00 UTC1h 40m
2026-07-22 CFE3299 LCY → NCE Jul 22, 13:30 UTCJul 22, 15:05 UTC1h 35m
2026-07-22 CFE12G - Jul 22, 10:20 UTCJul 22, 12:20 UTC2h 0m
2026-07-21 CFE322 GLA → LCY Jul 21, 18:20 UTCJul 21, 19:30 UTC1h 10m
2026-07-21 CFE8724 LCY → GLA Jul 21, 16:20 UTCJul 21, 17:25 UTC1h 5m
2026-07-21 CFE34H ZRH → LCY Jul 21, 13:20 UTCJul 21, 14:30 UTC1h 10m
2026-07-21 CFE34H ZRH → LCY Jul 21, 13:10 UTCJul 21, 13:15 UTC5m
2026-07-21 CFE37Y LCY → ZRH Jul 21, 11:00 UTCJul 21, 12:05 UTC1h 5m
2026-07-21 CFE2GH EDI → LCY Jul 21, 08:15 UTCJul 21, 09:25 UTC1h 10m
2026-07-21 CFE1TJ LCY → EDI Jul 21, 06:30 UTCJul 21, 07:30 UTC1h 0m
2026-07-20 CFE75J ZRH → LCY Jul 20, 18:20 UTCJul 20, 19:40 UTC1h 20m
2026-07-20 CFE11L LCY → ZRH Jul 20, 16:10 UTCJul 20, 17:20 UTC1h 10m
2026-07-20 CFE36A MAD → LCY Jul 20, 12:35 UTCJul 20, 15:00 UTC2h 25m
2026-07-20 CFE728 LCY → MAD Jul 20, 08:55 UTCJul 20, 11:00 UTC2h 5m
2026-07-20 CFE772 LCY → GLA Jul 20, 07:00 UTCJul 20, 08:05 UTC1h 5m
2026-07-19 CFE72AN LCY → GLA Jul 19, 19:10 UTCJul 19, 20:10 UTC1h 0m
2026-07-19 CFE736 LGW → NCE Jul 19, 16:00 UTCJul 19, 18:15 UTC2h 15m
2026-07-19 CFE17Z LCY → IBZ Jul 19, 12:55 UTCJul 19, 15:00 UTC2h 5m
2026-07-19 CFE99B EDI → LCY Jul 19, 10:25 UTCJul 19, 11:55 UTC1h 30m
2026-07-18 CFE2906 ALC → SOU Jul 18, 11:55 UTCJul 18, 14:45 UTC2h 50m
2026-07-18 CFE2905 SOU → ALC Jul 18, 08:15 UTCJul 18, 10:10 UTC1h 55m
2026-07-17 CFE9760 - Jul 17, 20:04 UTCJul 17, 21:00 UTC55m
2026-07-17 CFE8712 LCY → EDI Jul 17, 18:05 UTCJul 17, 19:05 UTC1h 0m
2026-07-17 CFE80NJ FLR → LCY Jul 17, 14:50 UTCJul 17, 16:44 UTC1h 55m
2026-07-17 CFE56D LCY → FLR Jul 17, 11:50 UTCJul 17, 13:40 UTC1h 50m
2026-07-17 CFE71LK EGC → LCY Jul 17, 09:15 UTCJul 17, 10:30 UTC1h 15m
2026-07-17 CFE408 LCY → EGC Jul 17, 06:54 UTCJul 17, 08:04 UTC1h 10m
2026-07-16 CFE2L - Jul 16, 18:44 UTCJul 16, 19:50 UTC1h 5m
2026-07-16 CFE8712 LCY → EDI Jul 16, 17:05 UTCJul 16, 18:00 UTC55m
2026-07-16 CFE736 IBZ → LCY Jul 16, 14:10 UTCJul 16, 16:05 UTC1h 55m
2026-07-16 CFE17Z LCY → IBZ Jul 16, 10:04 UTCJul 16, 12:20 UTC2h 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-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?
Yes. Mode-S 406C43 is currently airborne.
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, CFE8712, CFE844, CFE736.