Apparatus

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sensors Mode-S transponder

403409

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-RVNC · PIPER PA-38 Tomahawk

Hex
403409
Octal
20032011
Decimal
4,207,625
Country
GB
Tail
G-RVNC
Type
PA38
No current signal · last broadcast 2d ago
Flights observed
169
Distinct callsigns
2
Country
GB
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 403409.

Country allocation

The ICAO 24-bit address 403409 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 2 distinct

Callsign Airline Flights Last seen
GRVNC - 93 2026-06-29
GRVNA - 76 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 GRVNA LPL → LPL Jul 11, 10:25 UTCJul 11, 12:30 UTC2h 5m
2026-06-30 GRVNA - Jun 30, 12:30 UTCJun 30, 13:10 UTC40m
2026-06-30 GRVNA - Jun 30, 10:25 UTCJun 30, 11:40 UTC1h 15m
2026-06-29 GRVNC - Jun 29, 14:14 UTCJun 29, 16:00 UTC1h 45m
2026-06-29 GRVNA - Jun 29, 08:24 UTCJun 29, 11:39 UTC3h 15m
2026-06-28 GRVNA - Jun 28, 17:50 UTCJun 28, 18:10 UTC20m
2026-06-28 GRVNA - Jun 28, 16:25 UTCJun 28, 17:04 UTC40m
2026-06-28 GRVNA - Jun 28, 14:39 UTCJun 28, 15:20 UTC40m
2026-06-28 GRVNA LPL → LPL Jun 28, 12:50 UTCJun 28, 13:25 UTC35m
2026-06-28 GRVNA - Jun 28, 11:00 UTCJun 28, 11:29 UTC30m
2026-06-28 GRVNA - Jun 28, 10:39 UTCJun 28, 10:55 UTC15m
2026-06-28 GRVNA - Jun 28, 08:44 UTCJun 28, 09:30 UTC45m
2026-06-28 GRVNA - Jun 28, 08:25 UTCJun 28, 08:39 UTC15m
2026-06-27 GRVNA - Jun 27, 08:05 UTCJun 27, 09:09 UTC1h 5m
2026-06-26 GRVNC - Jun 26, 08:40 UTCJun 26, 09:20 UTC40m
2026-06-25 GRVNC LPL → LPL Jun 25, 15:24 UTCJun 25, 16:14 UTC50m
2026-06-25 GRVNC LPL → LPL Jun 25, 13:40 UTCJun 25, 14:24 UTC45m
2026-06-25 GRVNC - Jun 25, 10:25 UTCJun 25, 11:35 UTC1h 10m
2026-06-25 GRVNC - Jun 25, 08:30 UTCJun 25, 09:14 UTC45m
2026-06-24 GRVNA - Jun 24, 14:24 UTCJun 24, 15:14 UTC50m
2026-06-24 GRVNC - Jun 24, 10:30 UTCJun 24, 12:25 UTC1h 55m
2026-06-23 GRVNA - Jun 23, 14:04 UTCJun 23, 15:15 UTC1h 10m
2026-06-23 GRVNC - Jun 23, 12:29 UTCJun 23, 13:19 UTC50m
2026-06-23 GRVNC - Jun 23, 10:19 UTCJun 23, 11:29 UTC1h 10m
2026-06-23 GRVNC - Jun 23, 08:20 UTCJun 23, 09:20 UTC1h 0m
2026-06-22 GRVNA - Jun 22, 13:54 UTCJun 22, 15:05 UTC1h 10m
2026-06-22 GRVNA - Jun 22, 13:29 UTCJun 22, 13:49 UTC20m
2026-06-21 GRVNA - Jun 21, 10:04 UTCJun 21, 13:00 UTC2h 55m
2026-06-21 GRVNC - Jun 21, 08:04 UTCJun 21, 09:29 UTC1h 25m
2026-06-20 GRVNA - Jun 20, 13:04 UTCJun 20, 14:54 UTC1h 50m
2026-06-20 GRVNA LPL → LPL Jun 20, 10:44 UTCJun 20, 11:49 UTC1h 5m
2026-06-18 GRVNC - Jun 18, 14:55 UTCJun 18, 15:45 UTC50m
2026-06-18 GRVNC - Jun 18, 13:00 UTCJun 18, 13:50 UTC50m
2026-06-18 GRVNC - Jun 18, 11:00 UTCJun 18, 11:55 UTC55m
2026-06-15 GRVNC LPL → LPL Jun 15, 14:24 UTCJun 15, 15:45 UTC1h 20m
2026-06-15 GRVNC - Jun 15, 12:45 UTCJun 15, 13:30 UTC45m
2026-06-14 GRVNA - Jun 14, 10:20 UTCJun 14, 11:10 UTC50m
2026-06-13 GRVNA - Jun 13, 14:30 UTCJun 13, 16:00 UTC1h 30m
2026-06-13 GRVNA - Jun 13, 12:05 UTCJun 13, 13:05 UTC1h 0m
2026-06-13 GRVNA - Jun 13, 08:30 UTCJun 13, 08:40 UTC10m
2026-06-13 GRVNA - Jun 13, 08:15 UTCJun 13, 08:25 UTC10m
2026-06-13 GRVNA LPL → LPL Jun 13, 08:05 UTCJun 13, 08:10 UTC5m
2026-06-07 GRVNA - Jun 7, 14:05 UTCJun 7, 14:55 UTC50m
2026-06-07 GRVNA - Jun 7, 12:15 UTCJun 7, 12:55 UTC40m
2026-06-07 GRVNA LPL → LPL Jun 7, 10:10 UTCJun 7, 11:10 UTC1h 0m
2026-06-07 GRVNA - Jun 7, 08:45 UTCJun 7, 09:00 UTC15m
2026-06-07 GRVNA - Jun 7, 08:05 UTCJun 7, 08:40 UTC35m
2026-06-06 GRVNA - Jun 6, 14:14 UTCJun 6, 14:59 UTC45m
2026-06-06 GRVNA LPL → LPL Jun 6, 10:25 UTCJun 6, 11:25 UTC1h 0m
2026-06-06 GRVNA - Jun 6, 08:40 UTCJun 6, 08:55 UTC15m

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

Mode-S 403409 frequently asked

What is Mode-S code 403409?
403409 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-RVNC.
Where is Mode-S 403409 registered?
Mode-S code 403409 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 403409 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 403409, octal 20032011, decimal 4,207,625.
What flights does 403409 operate?
Mode-S 403409 has broadcast 2 distinct callsigns, including GRVNC, GRVNA.