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 1h ago
Flights observed
79
Distinct callsigns
6
Country
GB
Last broadcast
1h 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 6 distinct

Callsign Airline Flights Last seen
UBT70Z Norse Atlantic UK 19 2026-05-29
UBT70A Norse Atlantic UK 18 2026-05-29
UBT78T Norse Atlantic UK 13 2026-05-29
UBT78G Norse Atlantic UK 12 2026-05-28
UBT795 Norse Atlantic UK 9 2026-05-16
UBT796 Norse Atlantic UK 8 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 UBT70Z JFK → LGW May 29, 22:25 UTCMay 30, 00:00 UTC1h 35m
2026-05-29 UBT70A LGW → JFK May 29, 12:35 UTCMay 29, 19:20 UTC6h 46m
2026-05-29 UBT78T MCO → LGW May 29, 01:10 UTCMay 29, 08:45 UTC7h 35m
2026-05-28 UBT78G LGW → MCO May 28, 13:40 UTCMay 28, 22:15 UTC8h 35m
2026-05-28 UBT78T MCO → LGW May 28, 00:50 UTCMay 28, 08:30 UTC7h 40m
2026-05-27 UBT78G LGW → MCO May 27, 13:30 UTCMay 27, 22:10 UTC8h 40m
2026-05-26 UBT70Z JFK → LGW May 26, 22:59 UTCMay 27, 05:24 UTC6h 25m
2026-05-26 UBT70A LGW → JFK May 26, 13:45 UTCMay 26, 20:34 UTC6h 50m
2026-05-26 UBT78T MCO → LGW May 26, 01:05 UTCMay 26, 08:59 UTC7h 55m
2026-05-25 UBT78G LGW → MCO May 25, 13:25 UTCMay 25, 21:54 UTC8h 29m
2026-05-24 UBT78T MCO → LGW May 24, 14:20 UTCMay 25, 09:15 UTC18h 55m
2026-05-24 UBT78G LGW → MCO May 24, 13:35 UTCMay 25, 09:15 UTC19h 40m
2026-05-23 UBT70Z JFK → LGW May 23, 23:10 UTCMay 24, 05:15 UTC6h 5m
2026-05-23 UBT70A LGW → JFK May 23, 12:20 UTCMay 23, 19:30 UTC7h 10m
2026-05-23 UBT78T MCO → LGW May 23, 01:20 UTCMay 23, 09:00 UTC7h 40m
2026-05-22 UBT78G LGW → MCO May 22, 13:40 UTCMay 22, 22:25 UTC8h 45m
2026-05-21 UBT70Z JFK → LGW May 21, 23:05 UTCMay 22, 05:05 UTC6h 0m
2026-05-21 UBT70A LGW → JFK May 21, 13:40 UTCMay 21, 20:50 UTC7h 10m
2026-05-20 UBT70Z JFK → LGW May 20, 01:00 UTCMay 20, 07:15 UTC6h 16m
2026-05-19 UBT70A LGW → JFK May 19, 12:45 UTCMay 19, 19:40 UTC6h 55m
2026-05-18 UBT78T MCO → LGW May 18, 00:55 UTCMay 18, 08:45 UTC7h 50m
2026-05-17 UBT78G LGW → MCO May 17, 13:25 UTCMay 17, 22:10 UTC8h 45m
2026-05-16 UBT796 CPT → LGW May 16, 21:30 UTCMay 17, 08:50 UTC11h 20m
2026-05-16 UBT795 LGW → CPT May 16, 08:16 UTCMay 16, 19:15 UTC11h 0m
2026-05-14 UBT796 CPT → LGW May 14, 21:50 UTCMay 15, 08:55 UTC11h 5m
2026-05-14 UBT795 LGW → CPT May 14, 08:15 UTCMay 14, 19:20 UTC11h 5m
2026-05-11 UBT78T MCO → LGW May 11, 00:49 UTCMay 11, 08:50 UTC8h 0m
2026-05-10 UBT78G LGW → MCO May 10, 13:19 UTCMay 10, 21:59 UTC8h 40m
2026-05-07 UBT796 CPT → LGW May 7, 21:40 UTCMay 8, 09:04 UTC11h 25m
2026-05-07 UBT795 LGW → CPT May 7, 08:35 UTCMay 7, 19:45 UTC11h 10m
2026-05-05 UBT70Z JFK → LGW May 5, 22:55 UTCMay 6, 05:10 UTC6h 15m
2026-05-05 UBT70A LGW → JFK May 5, 12:35 UTCMay 5, 19:30 UTC6h 55m
2026-05-04 UBT78T MCO → LGW May 4, 00:50 UTCMay 4, 08:15 UTC7h 25m
2026-05-03 UBT78G LGW → MCO May 3, 13:20 UTCMay 3, 22:25 UTC9h 5m
2026-05-02 UBT796 CPT → LGW May 2, 23:15 UTCMay 3, 10:25 UTC11h 9m
2026-05-02 UBT795 LGW → CPT May 2, 20:55 UTCMay 2, 21:20 UTC25m
2026-05-02 UBT795 LGW → CPT May 2, 10:25 UTCMay 2, 18:10 UTC7h 45m
2026-04-30 UBT70Z JFK → LGW Apr 30, 22:45 UTCMay 1, 05:10 UTC6h 25m
2026-04-30 UBT70A LGW → JFK Apr 30, 12:20 UTCApr 30, 19:00 UTC6h 40m
2026-04-30 UBT78T MCO → LGW Apr 30, 01:20 UTCApr 30, 09:45 UTC8h 25m
2026-04-29 UBT78G LGW → MCO Apr 29, 13:45 UTCApr 29, 22:15 UTC8h 30m
2026-04-28 UBT796 CPT → LGW Apr 28, 12:20 UTCApr 28, 20:40 UTC8h 20m
2026-04-28 UBT796 CPT → LGW Apr 28, 09:15 UTCApr 28, 09:30 UTC15m
2026-04-28 UBT795 LGW → CPT Apr 28, 06:50 UTCApr 28, 07:05 UTC15m
2026-04-27 UBT795 LGW → CPT Apr 27, 20:05 UTCApr 28, 04:00 UTC7h 55m
2026-04-25 UBT70Z JFK → LGW Apr 25, 22:40 UTCApr 26, 05:05 UTC6h 25m
2026-04-25 UBT70A LGW → JFK Apr 25, 13:10 UTCApr 25, 20:00 UTC6h 50m
2026-04-23 UBT70Z JFK → LGW Apr 23, 22:55 UTCApr 24, 05:40 UTC6h 45m
2026-04-23 UBT70A LGW → JFK Apr 23, 12:20 UTCApr 23, 18:50 UTC6h 29m
2026-04-21 UBT796 CPT → LGW Apr 21, 12:50 UTCApr 21, 21:20 UTC8h 30m

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 1h 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 6 distinct callsigns, including UBT70Z, UBT70A, UBT78T, UBT78G, UBT795.