sensors Mode-S transponder

407FCB

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-TNEC · AIRBUS A-321neo

Hex
407FCB
Octal
20077713
Decimal
4,227,019
Country
GB
Tail
G-TNEC
Type
A21N
No current signal · last broadcast 14h ago
Flights observed
12
Distinct callsigns
10
Country
GB
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 407FCB.

Country allocation

The ICAO 24-bit address 407FCB 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 10 distinct

Callsign Airline Flights Last seen
BAW771C - 2 2026-04-13
BAW770 - 2 2026-04-13
SHT13Z - 1 2026-04-14
SHT12U - 1 2026-04-13
BAW8TD - 1 2026-04-13
BAW819K - 1 2026-04-13
BAW777C British Airways 1 2026-04-12
BAW776F - 1 2026-04-12
BAW430A - 1 2026-04-14
BAW41R - 1 2026-04-14

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 BAW41R - Apr 14, 09:55 UTCApr 14, 10:40 UTC45m
2026-04-14 BAW430A - Apr 14, 07:55 UTCApr 14, 08:35 UTC40m
2026-04-14 SHT13Z - Apr 14, 05:15 UTCApr 14, 06:05 UTC50m
2026-04-13 SHT12U - Apr 13, 20:05 UTCApr 13, 20:55 UTC50m
2026-04-13 BAW819K CPH → LHR Apr 13, 16:50 UTCApr 13, 18:30 UTC1h 40m
2026-04-13 BAW8TD - Apr 13, 13:50 UTCApr 13, 15:20 UTC1h 30m
2026-04-13 BAW771C LCY → LHR Apr 13, 11:55 UTCApr 13, 12:05 UTC10m
2026-04-13 BAW771C ARN → LHR Apr 13, 09:40 UTCApr 13, 12:05 UTC2h 25m
2026-04-13 BAW770 - Apr 13, 07:55 UTCApr 13, 08:15 UTC20m
2026-04-13 BAW770 - Apr 13, 06:15 UTCApr 13, 08:15 UTC2h 0m
2026-04-12 BAW777C ARN → LHR Apr 12, 19:10 UTCApr 12, 20:15 UTC1h 5m
2026-04-12 BAW776F - Apr 12, 17:15 UTCApr 12, 17:55 UTC40m

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

Mode-S 407FCB frequently asked

What is Mode-S code 407FCB?
407FCB is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-TNEC.
Where is Mode-S 407FCB registered?
Mode-S code 407FCB 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 407FCB broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407FCB, octal 20077713, decimal 4,227,019.
What flights does 407FCB operate?
Mode-S 407FCB has broadcast 10 distinct callsigns, including BAW771C, BAW770, SHT13Z, SHT12U, BAW8TD.