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sensors Mode-S transponder

40799C

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
40799C
Octal
20074634
Decimal
4,225,436
Country
GB
Tail
G-LCAD
Type
E190
Broadcasting now · callsign CFE47X · 37,000 ft
Flights observed
507
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 21:40 UTC

Current position

40799C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 40799C 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
CFE4MW BA CityFlyer 9 2026-07-20
CFE23DB BA CityFlyer 9 2026-07-20
CFE8495 - 7 2026-07-15
CFE78X - 7 2026-07-14
CFE65GM - 7 2026-07-10
CFE301 - 7 2026-07-19
CFE221 - 7 2026-07-13
CFE93AU - 6 2026-07-15
CFE939 - 6 2026-07-14
CFE78PG - 6 2026-07-16
CFE736 BA CityFlyer 6 2026-07-23
CFE7026 - 6 2026-07-03
CFE692 - 6 2026-05-13
CFE635 - 6 2026-07-12
CFE61X - 6 2026-07-15
CFE53A - 6 2026-07-20
CFE36P - 6 2026-07-17
CFE35K BA CityFlyer 6 2026-05-13
CFE33T - 6 2026-07-09
CFE31L - 6 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CFE86WF PMI → LCY Jul 26, 19:25 UTCJul 26, 21:40 UTC2h 15m
2026-07-26 CFE4505 GCI → PMI Jul 26, 12:50 UTCJul 26, 14:35 UTC1h 45m
2026-07-26 CFE79U PMI → GCI Jul 26, 06:30 UTCJul 26, 08:55 UTC2h 26m
2026-07-25 CFE99K IOM → PMI Jul 25, 14:35 UTCJul 25, 16:55 UTC2h 20m
2026-07-25 CFE52L PMI → IOM Jul 25, 10:05 UTCJul 25, 12:35 UTC2h 30m
2026-07-24 CFE66D LCY → PMI Jul 24, 16:50 UTCJul 24, 19:00 UTC2h 10m
2026-07-24 CFE34H ZRH → LCY Jul 24, 14:00 UTCJul 24, 15:20 UTC1h 20m
2026-07-24 CFE37Y LCY → ZRH Jul 24, 11:30 UTCJul 24, 12:55 UTC1h 25m
2026-07-24 CFE801 LIN → LCY Jul 24, 08:55 UTCJul 24, 10:30 UTC1h 35m
2026-07-24 CFE92Q LCY → LIN Jul 24, 06:05 UTCJul 24, 07:35 UTC1h 30m
2026-07-23 CFE2L EDI → LCY Jul 23, 18:45 UTCJul 23, 19:45 UTC1h 0m
2026-07-23 CFE8712 LCY → EDI Jul 23, 16:50 UTCJul 23, 17:45 UTC55m
2026-07-23 CFE736 LGW → NCE Jul 23, 13:30 UTCJul 23, 15:35 UTC2h 5m
2026-07-23 CFE17Z LCY → IBZ Jul 23, 10:20 UTCJul 23, 12:15 UTC1h 55m
2026-07-23 CFE2GH EDI → LCY Jul 23, 08:05 UTCJul 23, 09:05 UTC1h 0m
2026-07-23 CFE1TJ LCY → EDI Jul 23, 06:10 UTCJul 23, 07:10 UTC1h 0m
2026-07-22 CFE94Z FLR → LCY Jul 22, 19:15 UTCJul 22, 21:15 UTC2h 0m
2026-07-22 CFE82DC LCY → FLR Jul 22, 16:30 UTCJul 22, 18:10 UTC1h 40m
2026-07-21 CFE93G LCY → GLA Jul 21, 19:25 UTCJul 21, 20:25 UTC1h 0m
2026-07-21 CFE71LK EGC → LCY Jul 21, 17:15 UTCJul 21, 18:40 UTC1h 25m
2026-07-21 CFE408 LCY → EGC Jul 21, 15:05 UTCJul 21, 16:15 UTC1h 10m
2026-07-21 CFE25C JSI → LCY Jul 21, 10:50 UTCJul 21, 14:00 UTC3h 10m
2026-07-21 CFE64H LCY → JSI Jul 21, 06:30 UTCJul 21, 09:20 UTC2h 50m
2026-07-20 CFE8FN NCE → LCY Jul 20, 18:30 UTCJul 20, 20:10 UTC1h 40m
2026-07-20 CFE3299 LCY → NCE Jul 20, 15:50 UTCJul 20, 17:20 UTC1h 30m
2026-07-20 CFE4MW AGP → LCY Jul 20, 12:25 UTCJul 20, 14:50 UTC2h 25m
2026-07-20 CFE23DB LCY → AGP Jul 20, 08:25 UTCJul 20, 11:10 UTC2h 45m
2026-07-20 CFE53A - Jul 20, 05:50 UTCJul 20, 06:45 UTC55m
2026-07-19 CFE301 - Jul 19, 19:15 UTCJul 19, 20:10 UTC55m
2026-07-19 CFE94Z - Jul 19, 16:25 UTCJul 19, 18:15 UTC1h 50m
2026-07-19 CFE82DC LCY → FLR Jul 19, 13:25 UTCJul 19, 15:05 UTC1h 40m
2026-07-19 CFE31J FLR → LCY Jul 19, 10:30 UTCJul 19, 12:25 UTC1h 55m
2026-07-19 CFE735 PSA → FLR Jul 19, 07:20 UTCJul 19, 09:00 UTC1h 40m
2026-07-18 CFE877 OLB → STN Jul 18, 10:35 UTCJul 18, 12:45 UTC2h 10m
2026-07-18 CFE33W LCY → OLB Jul 18, 07:15 UTCJul 18, 09:20 UTC2h 5m
2026-07-17 CFE88C AMS → LCY Jul 17, 18:29 UTCJul 17, 19:15 UTC45m
2026-07-17 CFE67W LCY → AMS Jul 17, 16:34 UTCJul 17, 17:20 UTC45m
2026-07-17 CFE4MW AGP → LCY Jul 17, 13:20 UTCJul 17, 15:35 UTC2h 15m
2026-07-17 CFE23DB - Jul 17, 09:20 UTCJul 17, 12:04 UTC2h 45m
2026-07-17 CFE36P - Jul 17, 06:54 UTCJul 17, 08:04 UTC1h 10m
2026-07-16 CFE78PG LCY → EDI Jul 16, 19:55 UTCJul 16, 20:49 UTC55m
2026-07-16 CFE908 - Jul 16, 18:05 UTCJul 16, 19:05 UTC1h 0m
2026-07-16 CFE561 LCY → EDI Jul 16, 16:15 UTCJul 16, 17:10 UTC55m
2026-07-16 CFE34E - Jul 16, 10:04 UTCJul 16, 11:25 UTC1h 20m
2026-07-16 CFE76JZ LCY → BER Jul 16, 07:35 UTCJul 16, 08:50 UTC1h 15m
2026-07-16 CFE8PR BER → LCY Jul 16, 05:10 UTCJul 16, 06:30 UTC1h 20m
2026-07-15 CFE8495 LCY → BER Jul 15, 17:35 UTCJul 15, 19:00 UTC1h 25m
2026-07-15 CFE61X BER → LCY Jul 15, 15:05 UTCJul 15, 16:30 UTC1h 25m
2026-07-15 CFE93AU LCY → BER Jul 15, 12:35 UTCJul 15, 14:00 UTC1h 25m
2026-07-15 CFE8732 GLA → LCY Jul 15, 10:10 UTCJul 15, 11:25 UTC1h 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-LCAD page for operator, model, and routing details .

Mode-S 40799C frequently asked

What is Mode-S code 40799C?
40799C is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-LCAD.
Where is Mode-S 40799C registered?
Mode-S code 40799C 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 40799C broadcasting right now?
Yes. Mode-S 40799C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40799C, octal 20074634, decimal 4,225,436.
What flights does 40799C operate?
Mode-S 40799C has broadcast 20 distinct callsigns, including CFE4MW, CFE23DB, CFE8495, CFE78X, CFE65GM.