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sensors Mode-S transponder

406D4E

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
406D4E
Octal
20066516
Decimal
4,222,286
Country
GB
Tail
G-LCYV
Type
E190
No current signal · last broadcast 1d ago
Flights observed
415
Distinct callsigns
20
Country
GB
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 406D4E.

Country allocation

The ICAO 24-bit address 406D4E 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
CFE1T BA CityFlyer 14 2026-06-21
CFE91C BA CityFlyer 10 2026-06-01
CFE6MW BA CityFlyer 10 2026-06-01
CFE36Y - 9 2026-07-06
CFE844 - 8 2026-07-06
CFE93AU BA CityFlyer 7 2026-06-01
CFE78X - 7 2026-07-09
CFE61X BA CityFlyer 7 2026-06-01
CFE221 - 7 2026-07-09
CFE95E - 6 2026-06-19
CFE88C - 6 2026-07-09
CFE75J - 6 2026-06-17
CFE74H - 6 2026-06-22
CFE6LJ - 6 2026-06-19
CFE67W - 6 2026-07-09
CFE5C - 6 2026-06-22
CFE37Y - 6 2026-07-08
CFE34H BA CityFlyer 6 2026-07-08
CFE11L - 6 2026-06-17
CFE92Q - 5 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 CFE736 IBZ → LCY Jul 12, 16:40 UTCJul 12, 18:50 UTC2h 10m
2026-07-12 CFE17Z - Jul 12, 13:20 UTCJul 12, 15:35 UTC2h 15m
2026-07-12 CFE9762 - Jul 12, 12:10 UTCJul 12, 12:25 UTC15m
2026-07-11 CFE9760 - Jul 11, 16:45 UTCJul 11, 18:50 UTC2h 5m
2026-07-10 CFE85XP - Jul 10, 14:35 UTCJul 10, 16:30 UTC1h 55m
2026-07-10 CFE7026 BER → LCY Jul 10, 11:40 UTCJul 10, 13:10 UTC1h 30m
2026-07-10 CFE27PM LCY → BER Jul 10, 09:05 UTCJul 10, 10:35 UTC1h 30m
2026-07-10 CFE48D DUB → LCY Jul 10, 06:55 UTCJul 10, 08:00 UTC1h 5m
2026-07-09 CFE221 LCY → DUB Jul 9, 20:55 UTCJul 9, 21:55 UTC1h 0m
2026-07-09 CFE88C - Jul 9, 19:20 UTCJul 9, 20:00 UTC40m
2026-07-09 CFE67W - Jul 9, 17:30 UTCJul 9, 18:10 UTC40m
2026-07-09 CFE229 - Jul 9, 15:20 UTCJul 9, 16:05 UTC45m
2026-07-09 CFE635 - Jul 9, 13:35 UTCJul 9, 14:15 UTC40m
2026-07-09 CFE71LK - Jul 9, 11:15 UTCJul 9, 12:25 UTC1h 10m
2026-07-09 CFE408 - Jul 9, 08:55 UTCJul 9, 10:10 UTC1h 15m
2026-07-09 CFE78X DUB → LCY Jul 9, 06:35 UTCJul 9, 07:40 UTC1h 5m
2026-07-08 CFE221 LCY → DUB Jul 8, 20:15 UTCJul 8, 21:05 UTC50m
2026-07-08 CFE88C - Jul 8, 18:30 UTCJul 8, 19:15 UTC45m
2026-07-08 CFE67W LCY → AMS Jul 8, 16:15 UTCJul 8, 16:55 UTC40m
2026-07-08 CFE34H ZRH → LCY Jul 8, 13:25 UTCJul 8, 14:40 UTC1h 15m
2026-07-08 CFE37Y LCY → ZRH Jul 8, 11:15 UTCJul 8, 12:25 UTC1h 10m
2026-07-08 CFE909 RTM → LCY Jul 8, 09:35 UTCJul 8, 10:10 UTC35m
2026-07-08 CFE4450 LCY → RTM Jul 8, 07:45 UTCJul 8, 08:25 UTC40m
2026-07-07 CFE88C AMS → LCY Jul 7, 18:15 UTCJul 7, 18:55 UTC40m
2026-07-07 CFE67W LCY → AMS Jul 7, 16:15 UTCJul 7, 17:00 UTC45m
2026-07-07 CFE80NJ - Jul 7, 13:30 UTCJul 7, 15:20 UTC1h 50m
2026-07-07 CFE56D LCY → FLR Jul 7, 10:35 UTCJul 7, 12:25 UTC1h 50m
2026-07-06 CFE36Y LIN → LCY Jul 6, 18:45 UTCJul 6, 20:15 UTC1h 30m
2026-07-06 CFE844 LCY → LIN Jul 6, 16:10 UTCJul 6, 17:35 UTC1h 25m
2026-07-06 CFE102 - Jul 6, 13:50 UTCJul 6, 14:55 UTC1h 5m
2026-07-06 CFE62N - Jul 6, 11:35 UTCJul 6, 12:35 UTC1h 0m
2026-07-06 CFE801 LIN → LCY Jul 6, 08:55 UTCJul 6, 10:35 UTC1h 40m
2026-07-06 CFE92Q LCY → LIN Jul 6, 06:15 UTCJul 6, 07:45 UTC1h 30m
2026-07-05 CFE36Y LIN → LCY Jul 5, 17:45 UTCJul 5, 19:20 UTC1h 35m
2026-07-05 CFE844 LCY → LIN Jul 5, 15:05 UTCJul 5, 16:35 UTC1h 30m
2026-07-05 CFE69ZN - Jul 5, 10:45 UTCJul 5, 11:50 UTC1h 5m
2026-07-04 CFE31Y - Jul 4, 17:40 UTCJul 4, 20:25 UTC2h 45m
2026-07-04 CFE67V - Jul 4, 13:40 UTCJul 4, 16:05 UTC2h 25m
2026-07-03 CFE93G LCY → GLA Jul 3, 18:25 UTCJul 3, 19:25 UTC1h 0m
2026-07-03 CFE9760 - Jul 3, 16:30 UTCJul 3, 17:30 UTC1h 0m
2026-07-02 CFE72AN - Jul 2, 16:55 UTCJul 2, 18:00 UTC1h 5m
2026-07-02 CFE34H ZRH → LCY Jul 2, 13:05 UTCJul 2, 14:20 UTC1h 15m
2026-07-02 CFE37Y LCY → ZRH Jul 2, 10:55 UTCJul 2, 12:10 UTC1h 15m
2026-06-22 CFE65GM - Jun 22, 15:35 UTCJun 22, 17:29 UTC1h 55m
2026-06-22 CFE41R LCY → NCE Jun 22, 12:25 UTCJun 22, 14:05 UTC1h 40m
2026-06-22 CFE74H - Jun 22, 09:54 UTCJun 22, 11:04 UTC1h 10m
2026-06-22 CFE5C - Jun 22, 08:04 UTCJun 22, 09:00 UTC55m
2026-06-22 CFE6Z - Jun 22, 05:34 UTCJun 22, 06:45 UTC1h 10m
2026-06-21 CFE78PG - Jun 21, 20:45 UTCJun 21, 21:44 UTC1h 0m
2026-06-21 CFE36Y LIN → LCY Jun 21, 18:14 UTCJun 21, 19:45 UTC1h 30m

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

Mode-S 406D4E frequently asked

What is Mode-S code 406D4E?
406D4E is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LCYV.
Where is Mode-S 406D4E registered?
Mode-S code 406D4E 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 406D4E broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406D4E, octal 20066516, decimal 4,222,286.
What flights does 406D4E operate?
Mode-S 406D4E has broadcast 20 distinct callsigns, including CFE1T, CFE91C, CFE6MW, CFE36Y, CFE844.