Apparatus

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sensors Mode-S transponder

40484B

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-RDCO · JABIRU J200-450

Hex
40484B
Octal
20044113
Decimal
4,212,811
Country
GB
Tail
G-RDCO
Type
JAB4
No current signal · last broadcast 6d ago
Flights observed
43
Distinct callsigns
1
Country
GB
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 40484B.

Country allocation

The ICAO 24-bit address 40484B 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
G RDCO - 43 2026-07-12

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-07-12 G RDCO - Jul 12, 11:45 UTCJul 12, 12:40 UTC55m
2026-07-11 G RDCO - Jul 11, 10:30 UTCJul 11, 11:25 UTC55m
2026-06-27 G RDCO - Jun 27, 13:24 UTCJun 27, 13:44 UTC20m
2026-06-27 G RDCO - Jun 27, 11:09 UTCJun 27, 11:20 UTC10m
2026-06-26 G RDCO - Jun 26, 09:00 UTCJun 26, 09:14 UTC15m
2026-06-15 G RDCO - Jun 15, 11:24 UTCJun 15, 14:10 UTC2h 45m
2026-06-14 G RDCO - Jun 14, 12:05 UTCJun 14, 15:30 UTC3h 25m
2026-06-14 G RDCO - Jun 14, 08:45 UTCJun 14, 10:15 UTC1h 30m
2026-06-13 G RDCO - Jun 13, 12:25 UTCJun 13, 13:05 UTC40m
2026-06-13 G RDCO - Jun 13, 11:20 UTCJun 13, 11:40 UTC20m
2026-06-13 G RDCO - Jun 13, 09:45 UTCJun 13, 10:05 UTC20m
2026-06-12 G RDCO - Jun 12, 10:45 UTCJun 12, 11:00 UTC15m
2026-06-11 G RDCO - Jun 11, 12:15 UTCJun 11, 14:10 UTC1h 55m
2026-06-08 G RDCO - Jun 8, 09:05 UTCJun 8, 09:15 UTC10m
2026-06-08 G RDCO - Jun 8, 07:50 UTCJun 8, 08:20 UTC30m
2026-06-07 G RDCO - Jun 7, 08:45 UTCJun 7, 10:15 UTC1h 30m
2026-06-06 G RDCO - Jun 6, 15:15 UTCJun 6, 15:30 UTC15m
2026-06-06 G RDCO - Jun 6, 14:04 UTCJun 6, 14:40 UTC35m
2026-06-06 G RDCO - Jun 6, 12:49 UTCJun 6, 13:09 UTC20m
2026-06-06 G RDCO - Jun 6, 09:04 UTCJun 6, 10:45 UTC1h 40m
2026-06-05 G RDCO - Jun 5, 15:00 UTCJun 5, 17:15 UTC2h 15m
2026-06-05 G RDCO - Jun 5, 10:55 UTCJun 5, 13:20 UTC2h 25m
2026-05-31 G RDCO - May 31, 16:00 UTCMay 31, 17:15 UTC1h 15m
2026-05-29 G RDCO - May 29, 10:20 UTCMay 29, 11:35 UTC1h 15m
2026-05-24 G RDCO - May 24, 19:10 UTCMay 24, 19:35 UTC25m
2026-05-24 G RDCO - May 24, 13:00 UTCMay 24, 13:50 UTC50m
2026-05-24 G RDCO - May 24, 11:45 UTCMay 24, 11:55 UTC10m
2026-05-21 G RDCO - May 21, 11:40 UTCMay 21, 12:05 UTC25m
2026-05-15 G RDCO - May 15, 15:00 UTCMay 15, 16:10 UTC1h 10m
2026-05-15 G RDCO - May 15, 10:30 UTCMay 15, 11:30 UTC1h 0m
2026-05-12 G RDCO - May 12, 18:50 UTCMay 12, 18:55 UTC5m
2026-05-06 G RDCO - May 6, 17:15 UTCMay 6, 17:40 UTC24m
2026-05-06 G RDCO - May 6, 14:45 UTCMay 6, 15:20 UTC35m
2026-05-06 G RDCO - May 6, 13:50 UTCMay 6, 14:10 UTC20m
2026-05-01 G RDCO - May 1, 15:15 UTCMay 1, 15:40 UTC25m
2026-04-27 G RDCO - Apr 27, 17:50 UTCApr 27, 18:20 UTC30m
2026-04-26 G RDCO - Apr 26, 15:15 UTCApr 26, 15:40 UTC25m
2026-04-19 G RDCO - Apr 19, 15:25 UTCApr 19, 15:35 UTC10m
2026-04-19 G RDCO - Apr 19, 14:05 UTCApr 19, 14:35 UTC30m
2026-04-16 G RDCO - Apr 16, 15:45 UTCApr 16, 16:05 UTC20m
2026-04-16 G RDCO - Apr 16, 11:39 UTCApr 16, 12:00 UTC20m
2026-04-13 G RDCO - Apr 13, 15:25 UTCApr 13, 15:45 UTC20m
2026-04-13 G RDCO - Apr 13, 13:40 UTCApr 13, 14:05 UTC25m

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

Mode-S 40484B frequently asked

What is Mode-S code 40484B?
40484B is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-RDCO.
Where is Mode-S 40484B registered?
Mode-S code 40484B 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 40484B broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40484B, octal 20044113, decimal 4,212,811.
What flights does 40484B operate?
Mode-S 40484B has broadcast 1 distinct callsign, including G RDCO.