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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
Broadcasting now · callsign GBOOF · 4,000 ft
Flights observed
187
Distinct callsigns
1
Country
GB
Last broadcast
Jul 26, 17:10 UTC

Current position

402BB6 is currently broadcasting. Map zoomed to live position.

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 - 187 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GBOOF NQY → NQY Jul 26, 16:20 UTCJul 26, 17:10 UTC50m
2026-07-26 GBOOF NQY → NQY Jul 26, 12:00 UTCJul 26, 12:45 UTC45m
2026-07-25 GBOOF NQY → NQY Jul 25, 15:15 UTCJul 25, 15:50 UTC35m
2026-07-25 GBOOF NQY → NQY Jul 25, 10:50 UTCJul 25, 11:45 UTC55m
2026-07-24 GBOOF - Jul 24, 14:55 UTCJul 24, 16:00 UTC1h 5m
2026-07-24 GBOOF - Jul 24, 12:30 UTCJul 24, 13:20 UTC50m
2026-07-24 GBOOF - Jul 24, 08:55 UTCJul 24, 09:25 UTC30m
2026-07-23 GBOOF - Jul 23, 15:00 UTCJul 23, 15:25 UTC25m
2026-07-23 GBOOF NQY → LEQ Jul 23, 13:30 UTCJul 23, 14:00 UTC30m
2026-07-23 GBOOF NQY → NQY Jul 23, 09:40 UTCJul 23, 10:50 UTC1h 10m
2026-07-21 GBOOF NQY → NQY Jul 21, 15:10 UTCJul 21, 15:50 UTC40m
2026-07-21 GBOOF - Jul 21, 12:20 UTCJul 21, 13:05 UTC45m
2026-07-21 GBOOF - Jul 21, 09:20 UTCJul 21, 11:15 UTC1h 55m
2026-07-19 GBOOF - Jul 19, 16:10 UTCJul 19, 16:45 UTC35m
2026-07-19 GBOOF NQY → NQY Jul 19, 14:30 UTCJul 19, 15:20 UTC50m
2026-07-19 GBOOF - Jul 19, 10:55 UTCJul 19, 11:30 UTC35m
2026-07-19 GBOOF - Jul 19, 08:45 UTCJul 19, 09:25 UTC40m
2026-07-18 GBOOF - Jul 18, 14:35 UTCJul 18, 15:00 UTC25m
2026-07-18 GBOOF - Jul 18, 12:30 UTCJul 18, 12:55 UTC25m
2026-07-18 GBOOF - Jul 18, 11:20 UTCJul 18, 11:50 UTC30m
2026-07-18 GBOOF - Jul 18, 09:45 UTCJul 18, 10:10 UTC25m
2026-07-18 GBOOF NQY → LEQ Jul 18, 08:20 UTCJul 18, 08:45 UTC25m
2026-07-17 GBOOF NQY → NQY Jul 17, 13:50 UTCJul 17, 14:50 UTC1h 0m
2026-07-17 GBOOF EXT → NQY Jul 17, 11:15 UTCJul 17, 12:04 UTC50m
2026-07-15 GBOOF - Jul 15, 15:05 UTCJul 15, 16:00 UTC55m
2026-07-15 GBOOF NQY → NQY Jul 15, 13:05 UTCJul 15, 14:05 UTC1h 0m
2026-07-15 GBOOF - Jul 15, 11:20 UTCJul 15, 12:05 UTC45m
2026-07-15 GBOOF NQY → EXT Jul 15, 09:10 UTCJul 15, 10:05 UTC55m
2026-07-14 GBOOF - Jul 14, 15:30 UTCJul 14, 15:45 UTC15m
2026-07-14 GBOOF - Jul 14, 14:40 UTCJul 14, 15:10 UTC30m
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

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?
Yes. Mode-S 402BB6 is currently airborne.
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.