Apparatus

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sensors Mode-S transponder

406B6D

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
406B6D
Octal
20065555
Decimal
4,221,805
Country
GB
Tail
G-LCYT
Type
E190
Broadcasting now · callsign CFE64H · 37,000 ft
Flights observed
529
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 20:15 UTC

Current position

406B6D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 406B6D 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
CFE8PR - 10 2026-07-10
CFE8495 - 10 2026-07-09
CFE53NR BA CityFlyer 9 2026-07-24
CFE389 - 8 2026-07-15
CFE3271 - 8 2026-06-24
CFE1ZF - 8 2026-07-15
CFE1LJ - 8 2026-06-23
CFE03C - 8 2026-07-06
CFE91C BA CityFlyer 7 2026-06-05
CFE6MW BA CityFlyer 7 2026-06-05
CFE65GM BA CityFlyer 7 2026-07-21
CFE635 - 7 2026-07-10
CFE62R BA CityFlyer 7 2026-07-24
CFE56D - 7 2026-06-16
CFE41R BA CityFlyer 7 2026-07-21
CFE229 - 7 2026-07-10
CFE94Z - 6 2026-07-01
CFE93G - 6 2026-07-14
CFE939 - 6 2026-07-06
CFE88C - 6 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CFE4MW AGP → LCY Jul 26, 17:35 UTCJul 26, 20:10 UTC2h 35m
2026-07-26 CFE23DB LCY → AGP Jul 26, 14:05 UTCJul 26, 16:20 UTC2h 15m
2026-07-26 CFE31J FLR → LCY Jul 26, 10:50 UTCJul 26, 12:45 UTC1h 55m
2026-07-26 CFE735 PSA → FLR Jul 26, 07:50 UTCJul 26, 09:35 UTC1h 45m
2026-07-25 CFE877 OLB → STN Jul 25, 13:30 UTCJul 25, 15:30 UTC2h 0m
2026-07-25 CFE33W LCY → OLB Jul 25, 09:00 UTCJul 25, 11:00 UTC2h 0m
2026-07-25 CFE9760 CWL → LGW Jul 25, 07:40 UTCJul 25, 07:55 UTC15m
2026-07-24 CFE75J DUS → LCY Jul 24, 20:20 UTCJul 24, 21:40 UTC1h 20m
2026-07-24 CFE11L LCY → ZRH Jul 24, 18:05 UTCJul 24, 19:25 UTC1h 20m
2026-07-24 CFE53NR BHD → LCY Jul 24, 13:50 UTCJul 24, 14:50 UTC1h 0m
2026-07-24 CFE62R LCY → BHD Jul 24, 12:00 UTCJul 24, 12:55 UTC55m
2026-07-24 CFE736 LGW → NCE Jul 24, 09:00 UTCJul 24, 11:05 UTC2h 5m
2026-07-24 CFE17Z LCY → IBZ Jul 24, 05:50 UTCJul 24, 08:00 UTC2h 10m
2026-07-23 CFE557 LCY → LCY Jul 23, 19:40 UTCJul 23, 20:30 UTC50m
2026-07-23 CFE37E LCY → DUB Jul 23, 17:50 UTCJul 23, 18:45 UTC55m
2026-07-23 CFE6LJ DUB → LCY Jul 23, 15:55 UTCJul 23, 16:55 UTC1h 0m
2026-07-23 CFE95E LCY → DUB Jul 23, 13:20 UTCJul 23, 14:30 UTC1h 10m
2026-07-23 CFE49N BCN → LCY Jul 23, 10:25 UTCJul 23, 12:15 UTC1h 50m
2026-07-23 CFE8759 LCY → BCN Jul 23, 07:20 UTCJul 23, 09:00 UTC1h 40m
2026-07-22 CFE4459 RTM → LCY Jul 22, 19:00 UTCJul 22, 19:35 UTC35m
2026-07-22 CFE705 LCY → RTM Jul 22, 17:30 UTCJul 22, 18:10 UTC40m
2026-07-22 CFE99B EDI → LCY Jul 22, 15:10 UTCJul 22, 16:20 UTC1h 10m
2026-07-22 CFE98G LCY → EDI Jul 22, 13:10 UTCJul 22, 14:10 UTC1h 0m
2026-07-22 CFE8732 GLA → LCY Jul 22, 11:25 UTCJul 22, 11:35 UTC10m
2026-07-21 CFE787 - Jul 21, 18:00 UTCJul 21, 19:00 UTC1h 0m
2026-07-21 CFE65GM NCE → LCY Jul 21, 14:50 UTCJul 21, 16:45 UTC1h 55m
2026-07-21 CFE41R LCY → NCE Jul 21, 12:05 UTCJul 21, 13:45 UTC1h 40m
2026-07-21 CFE909 RTM → LCY Jul 21, 07:45 UTCJul 21, 08:25 UTC40m
2026-07-21 CFE4450 RTM → LCY Jul 21, 06:10 UTCJul 21, 06:45 UTC35m
2026-07-20 CFE2L - Jul 20, 18:45 UTCJul 20, 19:40 UTC55m
2026-07-20 CFE8712 LCY → EDI Jul 20, 16:55 UTCJul 20, 17:55 UTC1h 0m
2026-07-20 CFE736 LGW → NCE Jul 20, 13:55 UTCJul 20, 16:05 UTC2h 10m
2026-07-20 CFE17Z LCY → IBZ Jul 20, 10:10 UTCJul 20, 12:15 UTC2h 5m
2026-07-19 CFE98MN NCE → LCY Jul 19, 17:45 UTCJul 19, 19:25 UTC1h 40m
2026-07-19 CFE3299 - Jul 19, 15:00 UTCJul 19, 16:35 UTC1h 35m
2026-07-19 CFE7030 FAO → LCY Jul 19, 11:05 UTCJul 19, 13:25 UTC2h 20m
2026-07-18 CFE15L - Jul 18, 15:50 UTCJul 18, 18:35 UTC2h 45m
2026-07-18 CFE453 FAO → IOM Jul 18, 12:00 UTCJul 18, 14:30 UTC2h 30m
2026-07-17 CFE7029 LCY → BER Jul 17, 19:15 UTCJul 17, 21:44 UTC2h 30m
2026-07-17 CFE35K RTM → LCY Jul 17, 17:15 UTCJul 17, 18:05 UTC50m
2026-07-17 CFE692 LCY → RTM Jul 17, 15:40 UTCJul 17, 16:24 UTC45m
2026-07-17 CFE8FN NCE → LCY Jul 17, 12:55 UTCJul 17, 14:30 UTC1h 35m
2026-07-17 CFE3299 LCY → NCE Jul 17, 09:40 UTCJul 17, 11:10 UTC1h 30m
2026-07-17 CFE502 - Jul 17, 06:35 UTCJul 17, 07:44 UTC1h 10m
2026-07-16 CFE76D LCY → EDI Jul 16, 21:00 UTCJul 16, 21:55 UTC55m
2026-07-16 CFE75J ZRH → LCY Jul 16, 18:59 UTCJul 16, 20:15 UTC1h 15m
2026-07-16 CFE11L - Jul 16, 16:05 UTCJul 16, 17:20 UTC1h 15m
2026-07-16 CFE657 RTM → LCY Jul 16, 14:29 UTCJul 16, 15:10 UTC40m
2026-07-16 CFE4454 LCY → RTM Jul 16, 13:05 UTCJul 16, 13:40 UTC35m
2026-07-16 CFE65GM - Jul 16, 10:25 UTCJul 16, 12:05 UTC1h 40m

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

Mode-S 406B6D frequently asked

What is Mode-S code 406B6D?
406B6D is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LCYT.
Where is Mode-S 406B6D registered?
Mode-S code 406B6D 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 406B6D broadcasting right now?
Yes. Mode-S 406B6D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406B6D, octal 20065555, decimal 4,221,805.
What flights does 406B6D operate?
Mode-S 406B6D has broadcast 20 distinct callsigns, including CFE8PR, CFE8495, CFE53NR, CFE389, CFE3271.