sensors Mode-S transponder

408218

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VNEB · TECNAM P-2002 Sierra

Hex
408218
Octal
20101030
Decimal
4,227,608
Country
GB
Tail
G-VNEB
Type
SIRA
No current signal · last broadcast 17h ago
Flights observed
1
Distinct callsigns
1
Country
GB
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 408218.

Country allocation

The ICAO 24-bit address 408218 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 1 distinct

Callsign Airline Flights Last seen
GVNEB - 1 2026-04-14

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-14 GVNEB LBA → LBA Apr 14, 09:25 UTCApr 14, 10:30 UTC1h 5m

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

Mode-S 408218 frequently asked

What is Mode-S code 408218?
408218 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VNEB.
Where is Mode-S 408218 registered?
Mode-S code 408218 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 408218 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408218, octal 20101030, decimal 4,227,608.
What flights does 408218 operate?
Mode-S 408218 has broadcast 1 distinct callsign, including GVNEB.