Apparatus

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sensors Mode-S transponder

4079D3

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
4079D3
Octal
20074723
Decimal
4,225,491
Country
GB
Tail
G-LCAH
Type
E190
Broadcasting now · callsign CFE33W · 7,900 ft
Flights observed
503
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 20:25 UTC

Current position

4079D3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4079D3 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
CFE844 BA CityFlyer 10 2026-07-20
CFE36Y BA CityFlyer 9 2026-07-20
CFE939 - 8 2026-07-23
CFE6Z BA CityFlyer 8 2026-07-23
CFE301 - 8 2026-07-23
CFE03C BA CityFlyer 8 2026-07-23
CFE74H - 7 2026-07-15
CFE664 - 7 2026-07-12
CFE603 BA CityFlyer 7 2026-07-25
CFE53A BA CityFlyer 7 2026-07-24
CFE39R - 7 2026-07-12
CFE92Q BA CityFlyer 6 2026-06-08
CFE86WF BA CityFlyer 6 2026-06-18
CFE78PG BA CityFlyer 6 2026-07-22
CFE62N BA CityFlyer 6 2026-07-20
CFE322 - 6 2026-06-21
CFE95E - 5 2026-07-17
CFE93AU BA CityFlyer 5 2026-07-05
CFE908 - 5 2026-07-13
CFE8712 BA CityFlyer 5 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CFE80NJ FLR → LCY Jul 26, 18:35 UTCJul 26, 20:25 UTC1h 50m
2026-07-26 CFE56D LCY → FLR Jul 26, 15:30 UTCJul 26, 17:10 UTC1h 40m
2026-07-25 CFE72JF FLR → LCY Jul 25, 09:30 UTCJul 25, 11:15 UTC1h 45m
2026-07-25 CFE603 SEN → JER Jul 25, 06:30 UTCJul 25, 08:25 UTC1h 55m
2026-07-24 CFE88C AMS → LCY Jul 24, 18:35 UTCJul 24, 19:10 UTC35m
2026-07-24 CFE67W LCY → AMS Jul 24, 16:45 UTCJul 24, 17:30 UTC45m
2026-07-24 CFE49N BCN → LCY Jul 24, 13:40 UTCJul 24, 15:25 UTC1h 45m
2026-07-24 CFE8759 LCY → BCN Jul 24, 10:35 UTCJul 24, 12:20 UTC1h 45m
2026-07-24 CFE53A BHD → LCY Jul 24, 06:00 UTCJul 24, 07:00 UTC1h 0m
2026-07-23 CFE301 - Jul 23, 18:05 UTCJul 23, 19:00 UTC55m
2026-07-23 CFE939 LIN → LCY Jul 23, 15:05 UTCJul 23, 16:35 UTC1h 30m
2026-07-23 CFE03C LCY → LIN Jul 23, 12:35 UTCJul 23, 14:10 UTC1h 35m
2026-07-23 CFE6MW DUB → LCY Jul 23, 10:35 UTCJul 23, 11:35 UTC1h 0m
2026-07-23 CFE91C LCY → DUB Jul 23, 08:50 UTCJul 23, 09:40 UTC50m
2026-07-23 CFE6Z EDI → LCY Jul 23, 05:30 UTCJul 23, 06:40 UTC1h 10m
2026-07-22 CFE78PG LCY → EDI Jul 22, 19:55 UTCJul 22, 20:55 UTC1h 0m
2026-07-22 CFE75J ZRH → LCY Jul 22, 17:40 UTCJul 22, 19:00 UTC1h 20m
2026-07-22 CFE11L - Jul 22, 15:35 UTCJul 22, 16:45 UTC1h 10m
2026-07-22 CFE36A - Jul 22, 12:10 UTCJul 22, 14:10 UTC2h 0m
2026-07-21 CFE2342 GCI → EDI Jul 21, 17:40 UTCJul 21, 19:40 UTC2h 0m
2026-07-21 CFE65N - Jul 21, 14:40 UTCJul 21, 16:25 UTC1h 45m
2026-07-21 CFE389 - Jul 21, 12:25 UTCJul 21, 13:25 UTC1h 0m
2026-07-21 CFE14K GLA → LCY Jul 21, 08:05 UTCJul 21, 09:05 UTC1h 0m
2026-07-21 CFE8720 LCY → GLA Jul 21, 06:05 UTCJul 21, 07:05 UTC1h 0m
2026-07-20 CFE36Y LIN → LCY Jul 20, 19:05 UTCJul 20, 20:40 UTC1h 35m
2026-07-20 CFE844 LCY → LIN Jul 20, 16:20 UTCJul 20, 17:45 UTC1h 25m
2026-07-20 CFE102 BHD → LCY Jul 20, 13:50 UTCJul 20, 15:00 UTC1h 10m
2026-07-20 CFE62N LCY → BHD Jul 20, 11:35 UTCJul 20, 12:30 UTC55m
2026-07-20 CFE48D LCY → GLA Jul 20, 08:20 UTCJul 20, 09:25 UTC1h 5m
2026-07-20 CFE9TB LCY → DUB Jul 20, 05:55 UTCJul 20, 06:50 UTC55m
2026-07-19 CFE557 DUB → LCY Jul 19, 19:25 UTCJul 19, 20:25 UTC1h 0m
2026-07-19 CFE37E - Jul 19, 17:35 UTCJul 19, 18:30 UTC55m
2026-07-19 CFE65GM NCE → LCY Jul 19, 14:45 UTCJul 19, 16:40 UTC1h 55m
2026-07-19 CFE41R - Jul 19, 11:50 UTCJul 19, 13:30 UTC1h 40m
2026-07-18 CFE94H TLN → LCY Jul 18, 10:05 UTCJul 18, 11:50 UTC1h 45m
2026-07-18 CFE8747 LCY → UIP Jul 18, 06:10 UTCJul 18, 07:40 UTC1h 30m
2026-07-17 CFE557 DUB → LCY Jul 17, 19:25 UTCJul 17, 20:35 UTC1h 10m
2026-07-17 CFE37E - Jul 17, 17:09 UTCJul 17, 18:05 UTC55m
2026-07-17 CFE6LJ DUB → LCY Jul 17, 15:10 UTCJul 17, 16:10 UTC1h 0m
2026-07-17 CFE95E LCY → DUB Jul 17, 13:10 UTCJul 17, 14:15 UTC1h 5m
2026-07-17 CFE48A - Jul 17, 09:35 UTCJul 17, 11:35 UTC2h 0m
2026-07-17 CFE79SC - Jul 17, 06:00 UTCJul 17, 08:25 UTC2h 25m
2026-07-16 CFE4459 RTM → LCY Jul 16, 19:35 UTCJul 16, 20:15 UTC40m
2026-07-16 CFE705 LCY → RTM Jul 16, 18:10 UTCJul 16, 18:50 UTC40m
2026-07-16 CFE603 LCY → LCY Jul 16, 07:50 UTCJul 16, 08:35 UTC45m
2026-07-16 CFE6Z EDI → LCY Jul 16, 05:30 UTCJul 16, 06:40 UTC1h 10m
2026-07-15 CFE78PG LCY → EDI Jul 15, 19:05 UTCJul 15, 20:00 UTC55m
2026-07-15 CFE74H - Jul 15, 10:15 UTCJul 15, 11:00 UTC45m
2026-07-15 CFE74H - Jul 15, 09:50 UTCJul 15, 10:10 UTC20m
2026-07-15 CFE5C LCY → EDI Jul 15, 07:45 UTCJul 15, 08:45 UTC1h 0m

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

Mode-S 4079D3 frequently asked

What is Mode-S code 4079D3?
4079D3 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LCAH.
Where is Mode-S 4079D3 registered?
Mode-S code 4079D3 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 4079D3 broadcasting right now?
Yes. Mode-S 4079D3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4079D3, octal 20074723, decimal 4,225,491.
What flights does 4079D3 operate?
Mode-S 4079D3 has broadcast 20 distinct callsigns, including CFE844, CFE36Y, CFE939, CFE6Z, CFE301.