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sensors Mode-S transponder

400B8F

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-BJHB · MOONEY M-20

Hex
400B8F
Octal
20005617
Decimal
4,197,263
Country
GB
Tail
G-BJHB
Type
M20P
No current signal · last broadcast 1d ago
Flights observed
79
Distinct callsigns
1
Country
GB
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 400B8F.

Country allocation

The ICAO 24-bit address 400B8F 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
GBJHB - 79 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 GBJHB - Jul 12, 15:01 UTCJul 12, 15:10 UTC10m
2026-07-12 GBJHB - Jul 12, 12:30 UTCJul 12, 13:50 UTC1h 20m
2026-07-10 GBJHB HYC → JER Jul 10, 09:20 UTCJul 10, 10:45 UTC1h 25m
2026-07-09 GBJHB - Jul 9, 11:40 UTCJul 9, 13:05 UTC1h 25m
2026-07-08 GBJHB GCI → DNR Jul 8, 09:20 UTCJul 8, 09:50 UTC30m
2026-07-07 GBJHB HYC → GCI Jul 7, 09:10 UTCJul 7, 10:20 UTC1h 10m
2026-07-06 GBJHB - Jul 6, 17:00 UTCJul 6, 18:15 UTC1h 15m
2026-07-06 GBJHB - Jul 6, 14:40 UTCJul 6, 16:10 UTC1h 30m
2026-07-04 GBJHB HYC → LRH Jul 4, 15:00 UTCJul 4, 17:25 UTC2h 25m
2026-07-04 GBJHB - Jul 4, 08:50 UTCJul 4, 10:00 UTC1h 10m
2026-07-03 GBJHB - Jul 3, 11:00 UTCJul 3, 13:30 UTC2h 30m
2026-07-02 GBJHB - Jul 2, 09:05 UTCJul 2, 10:45 UTC1h 40m
2026-06-30 GBJHB - Jun 30, 11:15 UTCJun 30, 12:05 UTC50m
2026-06-29 GBJHB - Jun 29, 10:55 UTCJun 29, 11:45 UTC50m
2026-06-29 GBJHB - Jun 29, 08:50 UTCJun 29, 10:15 UTC1h 25m
2026-06-28 GBJHB - Jun 28, 15:20 UTCJun 28, 16:25 UTC1h 5m
2026-06-28 GBJHB HYC → HYC Jun 28, 12:29 UTCJun 28, 14:34 UTC2h 5m
2026-06-28 GBJHB HYC → HYC Jun 28, 09:55 UTCJun 28, 11:39 UTC1h 45m
2026-06-26 GBJHB - Jun 26, 14:39 UTCJun 26, 15:54 UTC1h 15m
2026-06-23 GBJHB - Jun 23, 08:30 UTCJun 23, 09:40 UTC1h 10m
2026-06-22 GBJHB - Jun 22, 13:39 UTCJun 22, 14:55 UTC1h 15m
2026-06-22 GBJHB HYC → DNR Jun 22, 10:25 UTCJun 22, 12:05 UTC1h 40m
2026-06-21 GBJHB - Jun 21, 15:15 UTCJun 21, 15:44 UTC30m
2026-06-21 GBJHB - Jun 21, 11:05 UTCJun 21, 11:30 UTC25m
2026-06-20 GBJHB - Jun 20, 16:44 UTCJun 20, 17:44 UTC1h 0m
2026-06-20 GBJHB HYC → HYC Jun 20, 15:24 UTCJun 20, 16:09 UTC45m
2026-06-18 GBJHB ACI → HYC Jun 18, 14:05 UTCJun 18, 15:00 UTC55m
2026-06-16 GBJHB HYC → ACI Jun 16, 12:14 UTCJun 16, 13:19 UTC1h 5m
2026-06-14 GBJHB HYC → HYC Jun 14, 12:40 UTCJun 14, 14:05 UTC1h 25m
2026-06-14 GBJHB HYC → HYC Jun 14, 10:45 UTCJun 14, 11:25 UTC40m
2026-06-13 GBJHB - Jun 13, 15:15 UTCJun 13, 16:15 UTC1h 0m
2026-06-13 GBJHB HYC → ACI Jun 13, 09:15 UTCJun 13, 10:20 UTC1h 5m
2026-06-05 GBJHB - Jun 5, 11:00 UTCJun 5, 11:10 UTC10m
2026-05-31 GBJHB - May 31, 11:00 UTCMay 31, 12:00 UTC1h 0m
2026-05-30 GBJHB - May 30, 17:20 UTCMay 30, 17:50 UTC30m
2026-05-30 GBJHB HYC → SEN May 30, 06:55 UTCMay 30, 07:25 UTC30m
2026-05-29 GBJHB - May 29, 16:10 UTCMay 29, 17:00 UTC50m
2026-05-29 GBJHB - May 29, 13:45 UTCMay 29, 14:00 UTC15m
2026-05-29 GBJHB - May 29, 08:45 UTCMay 29, 09:00 UTC15m
2026-05-28 GBJHB - May 28, 10:30 UTCMay 28, 11:40 UTC1h 10m
2026-05-27 GBJHB - May 27, 10:30 UTCMay 27, 11:30 UTC1h 0m
2026-05-26 GBJHB - May 26, 08:59 UTCMay 26, 10:20 UTC1h 20m
2026-05-25 GBJHB BYF → HYC May 25, 13:40 UTCMay 25, 15:00 UTC1h 20m
2026-05-25 GBJHB - May 25, 12:45 UTCMay 25, 12:55 UTC10m
2026-05-23 GBJHB - May 23, 10:40 UTCMay 23, 10:55 UTC15m
2026-05-23 GBJHB HYC → BYF May 23, 08:25 UTCMay 23, 09:40 UTC1h 15m
2026-05-22 GBJHB - May 22, 17:00 UTCMay 22, 18:05 UTC1h 5m
2026-05-22 GBJHB HYC → JER May 22, 08:55 UTCMay 22, 10:20 UTC1h 25m
2026-05-21 GBJHB - May 21, 15:00 UTCMay 21, 15:35 UTC35m
2026-05-21 GBJHB HYC → BBP May 21, 11:00 UTCMay 21, 11:40 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-BJHB page for operator, model, and routing details .

Mode-S 400B8F frequently asked

What is Mode-S code 400B8F?
400B8F is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-BJHB.
Where is Mode-S 400B8F registered?
Mode-S code 400B8F 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 400B8F broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400B8F, octal 20005617, decimal 4,197,263.
What flights does 400B8F operate?
Mode-S 400B8F has broadcast 1 distinct callsign, including GBJHB.