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sensors Mode-S transponder

40290B

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-BNNT · PIPER PA-28-140/150/160/180

Hex
40290B
Octal
20024413
Decimal
4,204,811
Country
GB
Tail
G-BNNT
Type
P28A
No current signal · last broadcast 2d ago
Flights observed
87
Distinct callsigns
1
Country
GB
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 40290B.

Country allocation

The ICAO 24-bit address 40290B 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
GBNNT - 87 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 GBNNT GLO → GLO Jul 11, 13:40 UTCJul 11, 14:20 UTC40m
2026-07-11 GBNNT - Jul 11, 11:15 UTCJul 11, 12:30 UTC1h 15m
2026-07-11 GBNNT - Jul 11, 09:35 UTCJul 11, 10:10 UTC35m
2026-07-10 GBNNT - Jul 10, 15:20 UTCJul 10, 16:15 UTC55m
2026-07-10 GBNNT - Jul 10, 13:45 UTCJul 10, 14:30 UTC45m
2026-07-10 GBNNT - Jul 10, 11:35 UTCJul 10, 12:15 UTC40m
2026-07-10 GBNNT GLO → GLO Jul 10, 09:20 UTCJul 10, 10:00 UTC40m
2026-07-09 GBNNT - Jul 9, 08:55 UTCJul 9, 10:40 UTC1h 45m
2026-07-07 GBNNT - Jul 7, 10:05 UTCJul 7, 11:30 UTC1h 25m
2026-07-06 GBNNT GLO → GLO Jul 6, 13:10 UTCJul 6, 13:50 UTC40m
2026-07-06 GBNNT - Jul 6, 10:25 UTCJul 6, 12:10 UTC1h 45m
2026-07-05 GBNNT - Jul 5, 13:25 UTCJul 5, 14:15 UTC50m
2026-07-04 GBNNT GLO → GLO Jul 4, 13:25 UTCJul 4, 14:15 UTC50m
2026-07-04 GBNNT - Jul 4, 11:15 UTCJul 4, 11:50 UTC35m
2026-07-04 GBNNT - Jul 4, 09:30 UTCJul 4, 10:10 UTC40m
2026-07-03 GBNNT - Jul 3, 14:10 UTCJul 3, 15:00 UTC50m
2026-07-03 GBNNT - Jul 3, 11:30 UTCJul 3, 12:15 UTC45m
2026-07-03 GBNNT - Jul 3, 09:45 UTCJul 3, 10:25 UTC40m
2026-07-03 GBNNT GLO → GLO Jul 3, 08:10 UTCJul 3, 08:55 UTC45m
2026-07-02 GBNNT - Jul 2, 15:55 UTCJul 2, 16:55 UTC1h 0m
2026-07-02 GBNNT - Jul 2, 14:20 UTCJul 2, 15:10 UTC50m
2026-07-02 GBNNT - Jul 2, 10:00 UTCJul 2, 11:35 UTC1h 35m
2026-07-02 GBNNT GLO → GLO Jul 2, 08:15 UTCJul 2, 08:55 UTC40m
2026-07-01 GBNNT - Jul 1, 11:40 UTCJul 1, 12:20 UTC40m
2026-06-30 GBNNT GLO → GLO Jun 30, 15:50 UTCJun 30, 16:50 UTC1h 0m
2026-06-30 GBNNT - Jun 30, 10:40 UTCJun 30, 12:00 UTC1h 20m
2026-06-29 GBNNT - Jun 29, 14:50 UTCJun 29, 15:39 UTC50m
2026-06-29 GBNNT - Jun 29, 13:19 UTCJun 29, 14:09 UTC50m
2026-06-29 GBNNT - Jun 29, 11:35 UTCJun 29, 12:05 UTC30m
2026-06-29 GBNNT - Jun 29, 08:39 UTCJun 29, 10:24 UTC1h 45m
2026-06-28 GBNNT - Jun 28, 15:24 UTCJun 28, 16:14 UTC50m
2026-06-27 GBNNT - Jun 27, 15:39 UTCJun 27, 16:44 UTC1h 5m
2026-06-27 GBNNT GLO → GLO Jun 27, 12:19 UTCJun 27, 13:04 UTC45m
2026-06-27 GBNNT GLO → GLO Jun 27, 11:09 UTCJun 27, 11:30 UTC20m
2026-06-26 GBNNT GLO → GLO Jun 26, 13:10 UTCJun 26, 13:49 UTC40m
2026-06-26 GBNNT - Jun 26, 11:20 UTCJun 26, 11:49 UTC30m
2026-06-26 GBNNT - Jun 26, 09:39 UTCJun 26, 10:39 UTC1h 0m
2026-06-25 GBNNT - Jun 25, 11:15 UTCJun 25, 11:25 UTC10m
2026-06-25 GBNNT - Jun 25, 09:29 UTCJun 25, 10:09 UTC40m
2026-06-24 GBNNT - Jun 24, 11:29 UTCJun 24, 11:59 UTC30m
2026-06-24 GBNNT - Jun 24, 09:09 UTCJun 24, 09:59 UTC50m
2026-06-05 GBNNT - Jun 5, 09:25 UTCJun 5, 09:40 UTC15m
2026-05-08 GBNNT GLO → GLO May 8, 13:35 UTCMay 8, 14:20 UTC45m
2026-05-08 GBNNT GLO → GLO May 8, 11:44 UTCMay 8, 12:44 UTC1h 0m
2026-05-08 GBNNT GLO → GLO May 8, 09:49 UTCMay 8, 10:19 UTC30m
2026-05-07 GBNNT - May 7, 09:25 UTCMay 7, 10:15 UTC50m
2026-05-06 GBNNT - May 6, 14:05 UTCMay 6, 14:50 UTC45m
2026-05-06 GBNNT - May 6, 12:40 UTCMay 6, 13:25 UTC45m
2026-05-06 GBNNT - May 6, 11:20 UTCMay 6, 11:35 UTC15m
2026-05-06 GBNNT - May 6, 09:35 UTCMay 6, 10:15 UTC40m

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

Mode-S 40290B frequently asked

What is Mode-S code 40290B?
40290B is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-BNNT.
Where is Mode-S 40290B registered?
Mode-S code 40290B 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 40290B broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40290B, octal 20024413, decimal 4,204,811.
What flights does 40290B operate?
Mode-S 40290B has broadcast 1 distinct callsign, including GBNNT.