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sensors Mode-S transponder

404B35

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-HIJN · IKARUS C-42 Bison

Hex
404B35
Octal
20045465
Decimal
4,213,557
Country
GB
Tail
G-HIJN
Type
C42
No current signal · last broadcast 19h ago
Flights observed
97
Distinct callsigns
1
Country
GB
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 404B35.

Country allocation

The ICAO 24-bit address 404B35 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
GHIJN - 97 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 GHIJN - Jul 17, 12:40 UTCJul 17, 13:20 UTC40m
2026-07-17 GHIJN - Jul 17, 10:55 UTCJul 17, 11:35 UTC40m
2026-07-12 GHIJN - Jul 12, 14:50 UTCJul 12, 15:35 UTC45m
2026-07-11 GHIJN RCS → RCS Jul 11, 15:20 UTCJul 11, 15:35 UTC15m
2026-07-11 GHIJN RCS → RCS Jul 11, 14:25 UTCJul 11, 14:40 UTC15m
2026-07-11 GHIJN RCS → RCS Jul 11, 13:30 UTCJul 11, 13:45 UTC15m
2026-07-11 GHIJN - Jul 11, 11:35 UTCJul 11, 11:55 UTC20m
2026-07-11 GHIJN - Jul 11, 10:35 UTCJul 11, 10:50 UTC15m
2026-07-11 GHIJN - Jul 11, 09:35 UTCJul 11, 09:45 UTC10m
2026-07-05 GHIJN - Jul 5, 15:15 UTCJul 5, 15:55 UTC40m
2026-07-05 GHIJN - Jul 5, 13:15 UTCJul 5, 13:55 UTC40m
2026-07-04 GHIJN - Jul 4, 10:30 UTCJul 4, 10:45 UTC15m
2026-07-03 GHIJN - Jul 3, 13:10 UTCJul 3, 13:35 UTC25m
2026-07-01 GHIJN - Jul 1, 13:10 UTCJul 1, 14:10 UTC1h 0m
2026-07-01 GHIJN - Jul 1, 10:20 UTCJul 1, 11:10 UTC50m
2026-06-30 GHIJN - Jun 30, 14:55 UTCJun 30, 15:45 UTC50m
2026-06-30 GHIJN - Jun 30, 12:10 UTCJun 30, 13:10 UTC1h 0m
2026-06-29 GHIJN - Jun 29, 12:29 UTCJun 29, 13:00 UTC30m
2026-06-28 GHIJN - Jun 28, 13:00 UTCJun 28, 13:40 UTC40m
2026-06-28 GHIJN - Jun 28, 11:14 UTCJun 28, 11:50 UTC35m
2026-06-28 GHIJN - Jun 28, 10:04 UTCJun 28, 10:19 UTC15m
2026-06-27 GHIJN RCS → RCS Jun 27, 15:45 UTCJun 27, 16:04 UTC20m
2026-06-27 GHIJN - Jun 27, 13:40 UTCJun 27, 13:55 UTC15m
2026-06-27 GHIJN RCS → RCS Jun 27, 12:34 UTCJun 27, 12:50 UTC15m
2026-06-27 GHIJN RCS → RCS Jun 27, 11:35 UTCJun 27, 11:50 UTC15m
2026-06-27 GHIJN - Jun 27, 10:34 UTCJun 27, 10:50 UTC15m
2026-06-27 GHIJN RCS → RCS Jun 27, 09:24 UTCJun 27, 09:40 UTC15m
2026-06-26 GHIJN - Jun 26, 14:55 UTCJun 26, 15:34 UTC40m
2026-06-26 GHIJN - Jun 26, 13:15 UTCJun 26, 13:45 UTC30m
2026-06-24 GHIJN - Jun 24, 15:00 UTCJun 24, 15:44 UTC45m
2026-06-24 GHIJN RCS → RCS Jun 24, 10:30 UTCJun 24, 11:14 UTC45m
2026-06-21 GHIJN - Jun 21, 09:59 UTCJun 21, 10:25 UTC25m
2026-06-21 GHIJN - Jun 21, 08:44 UTCJun 21, 08:54 UTC10m
2026-06-20 GHIJN RCS → RCS Jun 20, 15:39 UTCJun 20, 16:14 UTC35m
2026-06-20 GHIJN - Jun 20, 13:55 UTCJun 20, 14:24 UTC30m
2026-06-20 GHIJN - Jun 20, 12:34 UTCJun 20, 12:45 UTC10m
2026-06-20 GHIJN - Jun 20, 10:29 UTCJun 20, 10:59 UTC30m
2026-06-19 GHIJN - Jun 19, 14:49 UTCJun 19, 15:09 UTC20m
2026-06-19 GHIJN - Jun 19, 13:04 UTCJun 19, 13:34 UTC30m
2026-06-19 GHIJN RCS → RCS Jun 19, 10:44 UTCJun 19, 11:20 UTC35m
2026-06-17 GHIJN - Jun 17, 12:00 UTCJun 17, 12:40 UTC40m
2026-06-14 GHIJN RCS → RCS Jun 14, 14:35 UTCJun 14, 15:10 UTC35m
2026-06-14 GHIJN - Jun 14, 12:40 UTCJun 14, 13:15 UTC35m
2026-06-14 GHIJN RCS → RCS Jun 14, 10:35 UTCJun 14, 11:15 UTC40m
2026-06-14 GHIJN - Jun 14, 08:40 UTCJun 14, 09:10 UTC30m
2026-06-13 GHIJN - Jun 13, 14:35 UTCJun 13, 14:50 UTC15m
2026-06-13 GHIJN RCS → RCS Jun 13, 13:20 UTCJun 13, 13:45 UTC25m
2026-06-13 GHIJN RCS → RCS Jun 13, 11:20 UTCJun 13, 11:40 UTC20m
2026-06-10 GHIJN - Jun 10, 10:00 UTCJun 10, 10:35 UTC35m
2026-06-07 GHIJN - Jun 7, 14:55 UTCJun 7, 15:30 UTC35m

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

Mode-S 404B35 frequently asked

What is Mode-S code 404B35?
404B35 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-HIJN.
Where is Mode-S 404B35 registered?
Mode-S code 404B35 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 404B35 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 404B35, octal 20045465, decimal 4,213,557.
What flights does 404B35 operate?
Mode-S 404B35 has broadcast 1 distinct callsign, including GHIJN.