Apparatus

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sensors Mode-S transponder

402BB6

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
402BB6
Octal
20025666
Decimal
4,205,494
Country
GB
Tail
G-BOOF
Type
P28A
No current signal · last broadcast 2h ago
Flights observed
157
Distinct callsigns
1
Country
GB
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 402BB6.

Country allocation

The ICAO 24-bit address 402BB6 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
GBOOF - 157 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 GBOOF - Jul 14, 10:45 UTCJul 14, 11:35 UTC50m
2026-07-13 GBOOF NQY → NQY Jul 13, 09:15 UTCJul 13, 10:20 UTC1h 5m
2026-07-12 GBOOF NQY → NQY Jul 12, 12:50 UTCJul 12, 13:55 UTC1h 5m
2026-07-12 GBOOF NQY → NQY Jul 12, 11:10 UTCJul 12, 11:40 UTC30m
2026-07-12 GBOOF NQY → NQY Jul 12, 08:55 UTCJul 12, 09:45 UTC50m
2026-07-11 GBOOF NQY → NQY Jul 11, 08:25 UTCJul 11, 09:40 UTC1h 15m
2026-07-10 GBOOF - Jul 10, 13:20 UTCJul 10, 13:55 UTC35m
2026-07-10 GBOOF - Jul 10, 10:35 UTCJul 10, 11:20 UTC45m
2026-07-10 GBOOF - Jul 10, 08:40 UTCJul 10, 09:25 UTC45m
2026-07-09 GBOOF - Jul 9, 13:35 UTCJul 9, 14:20 UTC45m
2026-07-09 GBOOF NQY → NQY Jul 9, 11:55 UTCJul 9, 12:40 UTC45m
2026-07-09 GBOOF NQY → NQY Jul 9, 09:30 UTCJul 9, 10:30 UTC1h 0m
2026-07-08 GBOOF NQY → NQY Jul 8, 14:00 UTCJul 8, 14:45 UTC45m
2026-07-08 GBOOF - Jul 8, 12:40 UTCJul 8, 13:10 UTC30m
2026-07-08 GBOOF - Jul 8, 10:50 UTCJul 8, 11:05 UTC15m
2026-07-08 GBOOF NQY → NQY Jul 8, 09:00 UTCJul 8, 09:50 UTC50m
2026-07-07 GBOOF NQY → NQY Jul 7, 13:40 UTCJul 7, 14:25 UTC45m
2026-07-03 GBOOF NQY → NQY Jul 3, 14:05 UTCJul 3, 14:55 UTC50m
2026-07-03 GBOOF - Jul 3, 12:05 UTCJul 3, 12:55 UTC50m
2026-07-03 GBOOF - Jul 3, 10:25 UTCJul 3, 11:10 UTC45m
2026-07-03 GBOOF NQY → NQY Jul 3, 08:15 UTCJul 3, 09:05 UTC50m
2026-07-02 GBOOF NQY → NQY Jul 2, 15:40 UTCJul 2, 16:10 UTC30m
2026-07-02 GBOOF NQY → NQY Jul 2, 13:30 UTCJul 2, 14:15 UTC45m
2026-07-01 GBOOF NQY → NQY Jul 1, 15:10 UTCJul 1, 16:05 UTC55m
2026-07-01 GBOOF - Jul 1, 13:20 UTCJul 1, 14:25 UTC1h 5m
2026-07-01 GBOOF NQY → NQY Jul 1, 10:50 UTCJul 1, 11:45 UTC55m
2026-06-20 GBOOF - Jun 20, 13:14 UTCJun 20, 13:44 UTC30m
2026-06-14 GBOOF - Jun 14, 16:45 UTCJun 14, 17:15 UTC30m
2026-06-14 GBOOF - Jun 14, 14:10 UTCJun 14, 15:05 UTC55m
2026-06-14 GBOOF - Jun 14, 13:00 UTCJun 14, 13:35 UTC35m
2026-06-14 GBOOF NQY → NQY Jun 14, 10:35 UTCJun 14, 11:25 UTC50m
2026-06-14 GBOOF NQY → NQY Jun 14, 08:10 UTCJun 14, 09:25 UTC1h 15m
2026-06-13 GBOOF - Jun 13, 17:05 UTCJun 13, 17:40 UTC35m
2026-06-13 GBOOF - Jun 13, 16:10 UTCJun 13, 16:25 UTC15m
2026-06-13 GBOOF - Jun 13, 15:00 UTCJun 13, 15:25 UTC25m
2026-06-13 GBOOF - Jun 13, 12:45 UTCJun 13, 13:35 UTC50m
2026-06-13 GBOOF - Jun 13, 11:05 UTCJun 13, 11:45 UTC40m
2026-06-13 GBOOF NQY → NQY Jun 13, 08:55 UTCJun 13, 09:35 UTC40m
2026-06-10 GBOOF NQY → NQY Jun 10, 15:35 UTCJun 10, 16:15 UTC40m
2026-06-10 GBOOF - Jun 10, 14:20 UTCJun 10, 14:30 UTC10m
2026-06-10 GBOOF - Jun 10, 12:45 UTCJun 10, 13:20 UTC35m
2026-06-09 GBOOF - Jun 9, 10:50 UTCJun 9, 11:35 UTC45m
2026-06-09 GBOOF NQY → NQY Jun 9, 10:25 UTCJun 9, 10:30 UTC5m
2026-06-08 GBOOF - Jun 8, 10:40 UTCJun 8, 11:20 UTC40m
2026-06-05 GBOOF NQY → NQY Jun 5, 13:55 UTCJun 5, 14:40 UTC45m
2026-06-05 GBOOF - Jun 5, 11:35 UTCJun 5, 12:35 UTC1h 0m
2026-05-31 GBOOF NQY → NQY May 31, 15:45 UTCMay 31, 16:05 UTC20m
2026-05-31 GBOOF - May 31, 11:15 UTCMay 31, 12:15 UTC1h 0m
2026-05-31 GBOOF NQY → NQY May 31, 09:30 UTCMay 31, 10:15 UTC45m
2026-05-30 GBOOF NQY → NQY May 30, 15:40 UTCMay 30, 16:25 UTC45m

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

Mode-S 402BB6 frequently asked

What is Mode-S code 402BB6?
402BB6 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-BOOF.
Where is Mode-S 402BB6 registered?
Mode-S code 402BB6 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 402BB6 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 402BB6, octal 20025666, decimal 4,205,494.
What flights does 402BB6 operate?
Mode-S 402BB6 has broadcast 1 distinct callsign, including GBOOF.