Apparatus

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sensors Mode-S transponder

4075C1

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-CKWN · BOEING 787-9 Dreamliner

Hex
4075C1
Octal
20072701
Decimal
4,224,449
Country
GB
Tail
G-CKWN
Type
B789
No current signal · last broadcast 13h ago
Flights observed
146
Distinct callsigns
14
Country
GB
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 4075C1.

Country allocation

The ICAO 24-bit address 4075C1 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 14 distinct

Callsign Airline Flights Last seen
UBT70Z - 28 2026-07-09
UBT70A - 27 2026-07-09
UBT78T - 20 2026-07-06
UBT78G - 19 2026-07-05
NBT40S - 14 2026-07-01
NBT40H - 13 2026-06-30
UBT795 Norse Atlantic UK 9 2026-05-16
UBT796 Norse Atlantic UK 8 2026-05-16
UBT70M Norse Atlantic UK 2 2026-06-25
NBT022 - 2 2026-07-13
UBT902 Norse Atlantic UK 1 2026-07-01
UBT901 Norse Atlantic UK 1 2026-07-10
UBT70N Norse Atlantic UK 1 2026-06-10
NBT021 - 1 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 NBT022 - Jul 13, 06:01 UTCJul 13, 12:55 UTC6h 55m
2026-07-13 NBT022 - Jul 13, 04:20 UTCJul 13, 05:50 UTC1h 30m
2026-07-10 NBT021 - Jul 10, 17:25 UTCJul 11, 02:55 UTC9h 30m
2026-07-10 UBT901 LGW → MAN Jul 10, 13:00 UTCJul 10, 14:40 UTC1h 40m
2026-07-09 UBT70Z JFK → LGW Jul 9, 22:45 UTCJul 10, 05:05 UTC6h 20m
2026-07-09 UBT70A LGW → JFK Jul 9, 12:30 UTCJul 9, 19:35 UTC7h 5m
2026-07-07 UBT70Z JFK → LGW Jul 7, 23:05 UTCJul 8, 05:20 UTC6h 15m
2026-07-07 UBT70A LGW → JFK Jul 7, 12:15 UTCJul 7, 19:10 UTC6h 55m
2026-07-06 UBT78T MCO → LGW Jul 6, 00:50 UTCJul 6, 08:25 UTC7h 35m
2026-07-05 UBT78G LGW → MCO Jul 5, 13:40 UTCJul 5, 22:25 UTC8h 45m
2026-07-03 UBT70Z JFK → LGW Jul 3, 23:00 UTCJul 4, 05:10 UTC6h 10m
2026-07-03 UBT70A LGW → JFK Jul 3, 12:50 UTCJul 3, 19:55 UTC7h 5m
2026-07-01 UBT902 MAN → LGW Jul 1, 14:55 UTCJul 1, 16:50 UTC1h 55m
2026-07-01 NBT40S JFK → FCO Jul 1, 04:45 UTCJul 1, 12:20 UTC7h 35m
2026-06-30 NBT40H - Jun 30, 17:45 UTCJul 1, 02:15 UTC8h 30m
2026-06-30 NBT40S JFK → FCO Jun 30, 04:45 UTCJun 30, 12:15 UTC7h 30m
2026-06-29 NBT40H - Jun 29, 17:30 UTCJun 30, 02:00 UTC8h 31m
2026-06-29 NBT40S - Jun 29, 04:50 UTCJun 29, 12:00 UTC7h 10m
2026-06-28 NBT40H - Jun 28, 17:39 UTCJun 29, 02:20 UTC8h 40m
2026-06-28 NBT40S - Jun 28, 05:20 UTCJun 28, 12:39 UTC7h 20m
2026-06-27 NBT40H - Jun 27, 18:49 UTCJun 28, 03:09 UTC8h 20m
2026-06-27 NBT40S - Jun 27, 04:49 UTCJun 27, 12:09 UTC7h 20m
2026-06-26 NBT40H - Jun 26, 17:40 UTCJun 27, 02:04 UTC8h 25m
2026-06-26 NBT40S - Jun 26, 05:24 UTCJun 26, 12:59 UTC7h 35m
2026-06-25 UBT70M LGW → JFK Jun 25, 19:34 UTCJun 26, 02:54 UTC7h 20m
2026-06-25 UBT78T MCO → LGW Jun 25, 01:50 UTCJun 25, 09:29 UTC7h 40m
2026-06-24 UBT78G LGW → MCO Jun 24, 14:55 UTCJun 24, 23:24 UTC8h 30m
2026-06-24 UBT78T MCO → LGW Jun 24, 01:44 UTCJun 24, 09:24 UTC7h 40m
2026-06-23 UBT78G LGW → MCO Jun 23, 13:29 UTCJun 23, 22:49 UTC9h 20m
2026-06-21 UBT70Z - Jun 21, 22:54 UTCJun 22, 05:04 UTC6h 10m
2026-06-21 UBT70A LGW → JFK Jun 21, 13:24 UTCJun 21, 20:24 UTC7h 0m
2026-06-21 UBT78T MCO → LGW Jun 21, 00:55 UTCJun 21, 08:40 UTC7h 45m
2026-06-20 UBT78G LGW → MCO Jun 20, 13:29 UTCJun 20, 22:30 UTC9h 0m
2026-06-19 UBT70Z JFK → LGW Jun 19, 22:45 UTCJun 20, 05:04 UTC6h 20m
2026-06-19 UBT70A LGW → JFK Jun 19, 12:34 UTCJun 19, 19:45 UTC7h 10m
2026-06-18 UBT70Z JFK → LGW Jun 18, 22:40 UTCJun 19, 05:09 UTC6h 29m
2026-06-18 UBT70A LGW → JFK Jun 18, 12:25 UTCJun 18, 19:25 UTC7h 0m
2026-06-18 UBT78T MCO → LGW Jun 18, 00:55 UTCJun 18, 08:40 UTC7h 45m
2026-06-17 UBT78G LGW → MCO Jun 17, 13:15 UTCJun 17, 21:55 UTC8h 40m
2026-06-17 UBT78T MCO → LGW Jun 17, 01:05 UTCJun 17, 08:35 UTC7h 30m
2026-06-16 UBT78G LGW → MCO Jun 16, 13:25 UTCJun 16, 22:40 UTC9h 16m
2026-06-12 UBT70Z JFK → LGW Jun 12, 23:45 UTCJun 13, 06:00 UTC6h 14m
2026-06-12 UBT70A LGW → JFK Jun 12, 12:20 UTCJun 12, 19:20 UTC7h 0m
2026-06-11 UBT70Z JFK → LGW Jun 11, 23:45 UTCJun 12, 05:55 UTC6h 11m
2026-06-11 UBT70A LGW → JFK Jun 11, 12:35 UTCJun 11, 19:30 UTC6h 55m
2026-06-10 UBT70N JFK → LGW Jun 10, 05:20 UTCJun 10, 11:30 UTC6h 10m
2026-06-09 NBT40H FCO → JFK Jun 9, 17:30 UTCJun 10, 02:00 UTC8h 30m
2026-06-09 NBT40S JFK → FCO Jun 9, 04:55 UTCJun 9, 12:25 UTC7h 30m
2026-06-08 NBT40H FCO → JFK Jun 8, 17:25 UTCJun 9, 01:50 UTC8h 25m
2026-06-08 NBT40S JFK → FCO Jun 8, 05:00 UTCJun 8, 12:25 UTC7h 25m

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

Mode-S 4075C1 frequently asked

What is Mode-S code 4075C1?
4075C1 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-CKWN.
Where is Mode-S 4075C1 registered?
Mode-S code 4075C1 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 4075C1 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4075C1, octal 20072701, decimal 4,224,449.
What flights does 4075C1 operate?
Mode-S 4075C1 has broadcast 14 distinct callsigns, including UBT70Z, UBT70A, UBT78T, UBT78G, NBT40S.