Apparatus

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sensors Mode-S transponder

40833C

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-XLRD · AIRBUS A-321neo

Hex
40833C
Octal
20101474
Decimal
4,227,900
Country
GB
Tail
G-XLRD
Type
A21N
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
365
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S 40833C.

Country allocation

The ICAO 24-bit address 40833C 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 20 distinct

Callsign Airline Flights Last seen
WUK6587 - 39 2026-07-26
WUK2TN - 39 2026-07-26
WUK825 - 24 2026-07-26
WUK597 Wizz Air UK 23 2026-07-26
WUK9836 - 18 2026-07-22
WUK9224 - 17 2026-07-22
WUK7VJ - 16 2026-07-20
WUK6090 - 16 2026-07-20
WUK441 - 16 2026-07-09
WUK75 Wizz Air UK 15 2026-07-09
WUK8PY - 13 2026-07-22
WUK312 - 13 2026-07-22
WUK975 - 12 2026-07-22
WUK8YM - 12 2026-07-22
WUK7PY - 10 2026-07-25
WUK73 - 10 2026-07-25
WUK6J - 10 2026-07-14
WUK7DB - 9 2026-07-14
WUK5608 Wizz Air UK 8 2026-04-22
WUK5607 Wizz Air UK 5 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WUK597 SZG → LTN Jul 26, 22:10 UTCJul 26, 23:00 UTC50m
2026-07-26 WUK825 - Jul 26, 17:10 UTCJul 26, 20:35 UTC3h 25m
2026-07-26 WUK6587 VLC → LGW Jul 26, 13:25 UTCJul 26, 15:30 UTC2h 5m
2026-07-26 WUK2TN LGW → VLC Jul 26, 07:20 UTCJul 26, 09:00 UTC1h 40m
2026-07-25 WUK7PY - Jul 25, 21:40 UTCJul 26, 01:25 UTC3h 45m
2026-07-25 WUK73 - Jul 25, 16:50 UTCJul 25, 20:10 UTC3h 20m
2026-07-25 WUK6587 - Jul 25, 13:25 UTCJul 25, 15:35 UTC2h 10m
2026-07-25 WUK2TN - Jul 25, 09:55 UTCJul 25, 11:50 UTC1h 55m
2026-07-24 WUK89VK AGP → LGW Jul 24, 21:05 UTCJul 24, 23:15 UTC2h 10m
2026-07-24 WUK71KJ LGW → AGP Jul 24, 17:20 UTCJul 24, 19:50 UTC2h 30m
2026-07-24 WUK6587 VLC → LGW Jul 24, 12:55 UTCJul 24, 14:50 UTC1h 55m
2026-07-24 WUK2TN LGW → VLC Jul 24, 09:10 UTCJul 24, 11:05 UTC1h 55m
2026-07-23 WUK7PY - Jul 23, 21:55 UTCJul 24, 01:50 UTC3h 55m
2026-07-23 WUK73 - Jul 23, 16:40 UTCJul 23, 20:00 UTC3h 20m
2026-07-23 WUK6587 VLC → LGW Jul 23, 13:00 UTCJul 23, 15:05 UTC2h 5m
2026-07-23 WUK2TN LGW → VLC Jul 23, 10:00 UTCJul 23, 11:50 UTC1h 50m
2026-07-22 WUK8YM - Jul 22, 22:15 UTCJul 23, 00:55 UTC2h 40m
2026-07-22 WUK975 - Jul 22, 18:50 UTCJul 22, 20:45 UTC1h 55m
2026-07-22 WUK312 PRG → LGW Jul 22, 15:45 UTCJul 22, 17:30 UTC1h 45m
2026-07-22 WUK8PY LGW → PRG Jul 22, 13:00 UTCJul 22, 14:35 UTC1h 35m
2026-07-22 WUK9224 - Jul 22, 11:10 UTCJul 22, 11:25 UTC15m
2026-07-22 WUK9836 - Jul 22, 05:00 UTCJul 22, 10:25 UTC5h 25m
2026-07-21 WUK8YM - Jul 21, 19:15 UTCJul 21, 21:50 UTC2h 35m
2026-07-21 WUK975 - Jul 21, 15:20 UTCJul 21, 17:25 UTC2h 5m
2026-07-21 WUK6587 VLC → LGW Jul 21, 11:35 UTCJul 21, 13:40 UTC2h 5m
2026-07-21 WUK2TN LGW → VLC Jul 21, 07:20 UTCJul 21, 09:05 UTC1h 45m
2026-07-20 WUK597 - Jul 20, 19:45 UTCJul 20, 23:55 UTC4h 9m
2026-07-20 WUK825 LGW → AYT Jul 20, 14:45 UTCJul 20, 18:25 UTC3h 40m
2026-07-20 WUK6090 FAO → LGW Jul 20, 10:40 UTCJul 20, 13:10 UTC2h 30m
2026-07-20 WUK7VJ LGW → FAO Jul 20, 06:55 UTCJul 20, 09:25 UTC2h 30m
2026-07-19 WUK8YM - Jul 19, 23:05 UTCJul 20, 01:45 UTC2h 40m
2026-07-19 WUK975 - Jul 19, 19:40 UTCJul 19, 21:40 UTC2h 0m
2026-07-19 WUK312 PRG → LGW Jul 19, 16:10 UTCJul 19, 18:00 UTC1h 50m
2026-07-19 WUK8PY LGW → PRG Jul 19, 13:25 UTCJul 19, 14:50 UTC1h 25m
2026-07-19 WUK9224 - Jul 19, 08:50 UTCJul 19, 11:10 UTC2h 20m
2026-07-19 WUK9836 - Jul 19, 04:50 UTCJul 19, 07:15 UTC2h 25m
2026-07-18 WUK7PY - Jul 18, 22:20 UTCJul 19, 02:05 UTC3h 45m
2026-07-18 WUK73 - Jul 18, 17:25 UTCJul 18, 20:40 UTC3h 15m
2026-07-18 WUK6587 VLC → LGW Jul 18, 12:50 UTCJul 18, 15:00 UTC2h 10m
2026-07-18 WUK2TN LGW → VLC Jul 18, 09:55 UTCJul 18, 11:50 UTC1h 55m
2026-07-17 WUK597 AYT → LGW Jul 17, 19:45 UTCJul 18, 00:04 UTC4h 20m
2026-07-17 WUK825 LGW → AYT Jul 17, 14:39 UTCJul 17, 18:29 UTC3h 50m
2026-07-17 WUK6090 FAO → LGW Jul 17, 10:40 UTCJul 17, 12:50 UTC2h 10m
2026-07-17 WUK7VJ LGW → FAO Jul 17, 07:14 UTCJul 17, 09:40 UTC2h 25m
2026-07-16 WUK8YM - Jul 16, 20:35 UTCJul 16, 23:20 UTC2h 45m
2026-07-16 WUK975 - Jul 16, 15:55 UTCJul 16, 18:00 UTC2h 5m
2026-07-16 WUK6090 - Jul 16, 11:05 UTCJul 16, 13:25 UTC2h 20m
2026-07-16 WUK7VJ LGW → FAO Jul 16, 07:15 UTCJul 16, 09:50 UTC2h 35m
2026-07-15 WUK597 - Jul 15, 20:40 UTCJul 16, 01:00 UTC4h 20m
2026-07-15 WUK825 LGW → AYT Jul 15, 15:25 UTCJul 15, 19:05 UTC3h 40m

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

Mode-S 40833C frequently asked

What is Mode-S code 40833C?
40833C is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-XLRD.
Where is Mode-S 40833C registered?
Mode-S code 40833C 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 40833C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40833C, octal 20101474, decimal 4,227,900.
What flights does 40833C operate?
Mode-S 40833C has broadcast 20 distinct callsigns, including WUK6587, WUK2TN, WUK825, WUK597, WUK9836.