Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

40742E

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
40742E
Octal
20072056
Decimal
4,224,046
Country
GB
Tail
G-CKOF
Type
B789
No current signal · last broadcast 14h ago
Flights observed
54
Distinct callsigns
12
Country
GB
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 40742E.

Country allocation

The ICAO 24-bit address 40742E 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 12 distinct

Callsign Airline Flights Last seen
UBT795 Norse Atlantic UK 11 2026-04-26
UBT796 Norse Atlantic UK 10 2026-04-26
NBT40H Norse Atlantic Airways 8 2026-06-01
UBT792 Norse Atlantic UK 7 2026-04-15
NBT40S Norse Atlantic Airways 7 2026-06-01
UBT791 Norse Atlantic UK 5 2026-04-15
UBT902 Norse Atlantic UK 1 2026-05-22
UBT901 Norse Atlantic UK 1 2026-05-06
UBT70Z Norse Atlantic UK 1 2026-04-21
UBT70N Norse Atlantic UK 1 2026-06-02
UBT70A Norse Atlantic UK 1 2026-04-21
NBT50E Norse Atlantic Airways 1 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 UBT70N JFK → LGW Jun 2, 05:15 UTCJun 2, 11:05 UTC5h 50m
2026-06-01 NBT40H FCO → JFK Jun 1, 17:25 UTCJun 2, 01:45 UTC8h 20m
2026-06-01 NBT40S JFK → FCO Jun 1, 05:00 UTCJun 1, 12:10 UTC7h 10m
2026-05-31 NBT40H FCO → JFK May 31, 18:05 UTCJun 1, 02:40 UTC8h 35m
2026-05-30 NBT40H FCO → JFK May 30, 18:10 UTCMay 31, 12:25 UTC18h 15m
2026-05-30 NBT40S JFK → FCO May 30, 04:40 UTCMay 30, 12:05 UTC7h 25m
2026-05-29 NBT40H FCO → JFK May 29, 17:50 UTCMay 30, 02:06 UTC8h 16m
2026-05-29 NBT40S JFK → FCO May 29, 04:40 UTCMay 29, 12:10 UTC7h 30m
2026-05-28 NBT40H FCO → JFK May 28, 17:45 UTCMay 29, 02:00 UTC8h 15m
2026-05-27 NBT40S JFK → FCO May 27, 04:49 UTCMay 27, 12:35 UTC7h 45m
2026-05-26 NBT40H FCO → JFK May 26, 17:30 UTCMay 27, 01:24 UTC7h 55m
2026-05-26 NBT40S JFK → FCO May 26, 04:50 UTCMay 26, 12:40 UTC7h 50m
2026-05-25 NBT40H FCO → JFK May 25, 17:45 UTCMay 26, 02:15 UTC8h 30m
2026-05-25 NBT40S JFK → FCO May 25, 04:40 UTCMay 25, 12:35 UTC7h 55m
2026-05-24 NBT40H FCO → JFK May 24, 17:40 UTCMay 24, 19:50 UTC2h 10m
2026-05-24 NBT40S JFK → FCO May 24, 04:40 UTCMay 24, 12:25 UTC7h 45m
2026-05-23 NBT50E ATH → JFK May 23, 16:05 UTCMay 24, 01:50 UTC9h 46m
2026-05-22 UBT902 MAN → LGW May 22, 10:40 UTCMay 22, 13:50 UTC3h 10m
2026-05-06 UBT901 LGW → MAN May 6, 14:15 UTCMay 6, 16:10 UTC1h 55m
2026-04-26 UBT796 CPT → LGW Apr 26, 13:55 UTCApr 26, 20:30 UTC6h 35m
2026-04-26 UBT796 CPT → LGW Apr 26, 09:20 UTCApr 26, 09:30 UTC10m
2026-04-26 UBT795 LGW → CPT Apr 26, 06:30 UTCApr 26, 06:55 UTC25m
2026-04-25 UBT795 LGW → CPT Apr 25, 19:55 UTCApr 26, 02:20 UTC6h 25m
2026-04-23 UBT796 CPT → LGW Apr 23, 12:01 UTCApr 23, 20:20 UTC8h 19m
2026-04-23 UBT796 CPT → LGW Apr 23, 09:01 UTCApr 23, 09:15 UTC15m
2026-04-23 UBT795 LGW → CPT Apr 23, 06:01 UTCApr 23, 06:20 UTC20m
2026-04-22 UBT795 LGW → CPT Apr 22, 19:40 UTCApr 23, 03:20 UTC7h 40m
2026-04-21 UBT70Z JFK → LGW Apr 21, 22:45 UTCApr 22, 05:25 UTC6h 40m
2026-04-21 UBT70A LGW → JFK Apr 21, 12:25 UTCApr 21, 19:15 UTC6h 50m
2026-04-19 UBT796 CPT → LGW Apr 19, 09:20 UTCApr 19, 20:40 UTC11h 20m
2026-04-19 UBT795 LGW → CPT Apr 19, 06:25 UTCApr 19, 06:45 UTC20m
2026-04-18 UBT795 LGW → CPT Apr 18, 19:55 UTCApr 19, 03:45 UTC7h 50m
2026-04-16 UBT796 - Apr 16, 19:15 UTCApr 16, 20:25 UTC1h 10m
2026-04-16 UBT796 - Apr 16, 18:10 UTCApr 16, 19:10 UTC1h 0m
2026-04-16 UBT796 - Apr 16, 13:50 UTCApr 16, 14:20 UTC30m
2026-04-16 UBT796 - Apr 16, 12:09 UTCApr 16, 13:00 UTC50m
2026-04-16 UBT796 - Apr 16, 09:10 UTCApr 16, 09:29 UTC20m
2026-04-16 UBT795 LGW → CPT Apr 16, 06:10 UTCApr 16, 06:25 UTC15m
2026-04-16 UBT795 LGW → CPT Apr 16, 03:09 UTCApr 16, 03:19 UTC10m
2026-04-16 UBT795 LGW → CPT Apr 16, 01:15 UTCApr 16, 03:04 UTC1h 50m
2026-04-15 UBT795 LGW → CPT Apr 15, 21:05 UTCApr 15, 21:30 UTC25m
2026-04-15 UBT795 LGW → CPT Apr 15, 19:35 UTCApr 15, 21:00 UTC1h 25m
2026-04-15 UBT792 BKK → LGW Apr 15, 17:05 UTCApr 15, 17:25 UTC20m
2026-04-15 UBT792 BKK → LGW Apr 15, 15:05 UTCApr 15, 17:00 UTC1h 55m
2026-04-15 UBT792 BKK → LGW Apr 15, 13:01 UTCApr 15, 14:55 UTC1h 54m
2026-04-15 UBT792 BKK → LGW Apr 15, 12:10 UTCApr 15, 12:50 UTC40m
2026-04-15 UBT792 BKK → LGW Apr 15, 07:01 UTCApr 15, 08:45 UTC1h 45m
2026-04-15 UBT792 BKK → LGW Apr 15, 05:00 UTCApr 15, 06:55 UTC1h 55m
2026-04-15 UBT791 LGW → BKK Apr 15, 00:55 UTCApr 15, 02:35 UTC1h 40m
2026-04-14 UBT791 LGW → BKK Apr 14, 22:55 UTCApr 15, 00:50 UTC1h 55m

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

Mode-S 40742E frequently asked

What is Mode-S code 40742E?
40742E is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-CKOF.
Where is Mode-S 40742E registered?
Mode-S code 40742E 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 40742E broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40742E, octal 20072056, decimal 4,224,046.
What flights does 40742E operate?
Mode-S 40742E has broadcast 12 distinct callsigns, including UBT795, UBT796, NBT40H, UBT792, NBT40S.