Apparatus

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sensors Mode-S transponder

403500

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-BTVX · CESSNA 152

Hex
403500
Octal
20032400
Decimal
4,207,872
Country
GB
Tail
G-BTVX
Type
C152
No current signal · last broadcast 7d ago
Flights observed
94
Distinct callsigns
1
Country
GB
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S 403500.

Country allocation

The ICAO 24-bit address 403500 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
GBTVX - 94 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 GBTVX - Jul 15, 12:10 UTCJul 15, 13:05 UTC55m
2026-07-13 GBTVX - Jul 13, 16:30 UTCJul 13, 17:25 UTC55m
2026-07-08 GBTVX - Jul 8, 12:20 UTCJul 8, 13:10 UTC50m
2026-07-06 GBTVX - Jul 6, 09:25 UTCJul 6, 10:05 UTC40m
2026-07-05 GBTVX - Jul 5, 16:00 UTCJul 5, 16:55 UTC55m
2026-07-05 GBTVX MME → MME Jul 5, 14:05 UTCJul 5, 14:55 UTC50m
2026-07-05 GBTVX - Jul 5, 12:00 UTCJul 5, 12:50 UTC50m
2026-07-04 GBTVX - Jul 4, 16:25 UTCJul 4, 17:05 UTC40m
2026-07-04 GBTVX - Jul 4, 15:05 UTCJul 4, 15:45 UTC40m
2026-07-04 GBTVX MME → MME Jul 4, 13:30 UTCJul 4, 13:50 UTC20m
2026-07-04 GBTVX - Jul 4, 10:55 UTCJul 4, 12:50 UTC1h 55m
2026-07-03 GBTVX - Jul 3, 13:50 UTCJul 3, 15:45 UTC1h 55m
2026-07-03 GBTVX - Jul 3, 10:10 UTCJul 3, 12:10 UTC2h 0m
2026-07-01 GBTVX MME → MME Jul 1, 12:10 UTCJul 1, 13:15 UTC1h 5m
2026-06-28 GBTVX MME → MME Jun 28, 19:09 UTCJun 28, 19:55 UTC45m
2026-06-27 GBTVX MME → MME Jun 27, 16:14 UTCJun 27, 16:49 UTC35m
2026-06-27 GBTVX - Jun 27, 14:14 UTCJun 27, 15:05 UTC50m
2026-06-27 GBTVX - Jun 27, 12:04 UTCJun 27, 12:50 UTC45m
2026-06-25 GBTVX - Jun 25, 14:59 UTCJun 25, 15:40 UTC40m
2026-06-25 GBTVX MME → MME Jun 25, 12:54 UTCJun 25, 13:59 UTC1h 5m
2026-06-22 GBTVX MME → MME Jun 22, 14:40 UTCJun 22, 15:29 UTC50m
2026-06-22 GBTVX - Jun 22, 12:49 UTCJun 22, 13:19 UTC30m
2026-06-21 GBTVX - Jun 21, 14:34 UTCJun 21, 14:50 UTC15m
2026-06-21 GBTVX - Jun 21, 10:44 UTCJun 21, 11:15 UTC30m
2026-06-20 GBTVX - Jun 20, 15:29 UTCJun 20, 16:19 UTC50m
2026-06-20 GBTVX - Jun 20, 13:19 UTCJun 20, 14:14 UTC55m
2026-06-20 GBTVX - Jun 20, 09:34 UTCJun 20, 10:20 UTC45m
2026-06-18 GBTVX - Jun 18, 12:30 UTCJun 18, 12:55 UTC25m
2026-06-18 GBTVX - Jun 18, 10:40 UTCJun 18, 11:15 UTC35m
2026-06-17 GBTVX - Jun 17, 11:05 UTCJun 17, 12:00 UTC55m
2026-06-14 GBTVX - Jun 14, 15:00 UTCJun 14, 15:55 UTC55m
2026-06-14 GBTVX - Jun 14, 13:40 UTCJun 14, 14:30 UTC50m
2026-06-14 GBTVX - Jun 14, 12:00 UTCJun 14, 12:50 UTC50m
2026-06-14 GBTVX - Jun 14, 10:15 UTCJun 14, 10:55 UTC40m
2026-06-13 GBTVX - Jun 13, 16:45 UTCJun 13, 17:20 UTC35m
2026-06-13 GBTVX - Jun 13, 14:45 UTCJun 13, 15:20 UTC35m
2026-06-13 GBTVX - Jun 13, 10:35 UTCJun 13, 11:40 UTC1h 5m
2026-06-13 GBTVX - Jun 13, 08:10 UTCJun 13, 08:55 UTC45m
2026-06-12 GBTVX - Jun 12, 13:10 UTCJun 12, 13:35 UTC25m
2026-06-10 GBTVX - Jun 10, 17:50 UTCJun 10, 18:55 UTC1h 5m
2026-06-08 GBTVX - Jun 8, 15:10 UTCJun 8, 16:35 UTC1h 25m
2026-06-08 GBTVX - Jun 8, 13:40 UTCJun 8, 14:25 UTC45m
2026-06-07 GBTVX - Jun 7, 16:55 UTCJun 7, 17:30 UTC35m
2026-06-07 GBTVX - Jun 7, 15:15 UTCJun 7, 15:40 UTC25m
2026-06-07 GBTVX - Jun 7, 14:05 UTCJun 7, 14:30 UTC25m
2026-06-07 GBTVX - Jun 7, 11:00 UTCJun 7, 13:15 UTC2h 15m
2026-06-07 GBTVX - Jun 7, 09:25 UTCJun 7, 10:15 UTC50m
2026-06-06 GBTVX - Jun 6, 08:50 UTCJun 6, 10:04 UTC1h 15m
2026-06-05 GBTVX - Jun 5, 15:55 UTCJun 5, 16:15 UTC20m
2026-06-05 GBTVX - Jun 5, 13:45 UTCJun 5, 14:35 UTC50m

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

Mode-S 403500 frequently asked

What is Mode-S code 403500?
403500 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-BTVX.
Where is Mode-S 403500 registered?
Mode-S code 403500 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 403500 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 403500, octal 20032400, decimal 4,207,872.
What flights does 403500 operate?
Mode-S 403500 has broadcast 1 distinct callsign, including GBTVX.