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sensors Mode-S transponder

4B1B11

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-KGN · BRM AERO Bristell B23

Hex
4B1B11
Octal
22615421
Decimal
4,922,129
Country
CH
Tail
HB-KGN
Type
BR23
No current signal · last broadcast Jul 26, 13:05 UTC
Flights observed
269
Distinct callsigns
1
Country
CH
Last broadcast
Jul 26, 13:05 UTC

Last known position

Most recent position reported by Mode-S 4B1B11.

Country allocation

The ICAO 24-bit address 4B1B11 falls within the block assigned to Switzerland (CH) by ICAO Annex 10, Volume III. Every aircraft registered in Switzerland 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
HBKGN - 269 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HBKGN BRN → BRN Jul 26, 12:15 UTCJul 26, 13:00 UTC45m
2026-07-25 HBKGN - Jul 25, 08:50 UTCJul 25, 09:10 UTC20m
2026-07-25 HBKGN - Jul 25, 07:45 UTCJul 25, 08:15 UTC30m
2026-07-24 HBKGN BRN → BRN Jul 24, 15:45 UTCJul 24, 16:15 UTC30m
2026-07-24 HBKGN - Jul 24, 10:35 UTCJul 24, 11:10 UTC35m
2026-07-24 HBKGN - Jul 24, 08:50 UTCJul 24, 09:55 UTC1h 5m
2026-07-24 HBKGN - Jul 24, 07:40 UTCJul 24, 08:10 UTC30m
2026-07-24 HBKGN BRN → BRN Jul 24, 06:30 UTCJul 24, 06:50 UTC20m
2026-07-23 HBKGN BRN → BRN Jul 23, 16:05 UTCJul 23, 18:25 UTC2h 20m
2026-07-23 HBKGN BRN → BRN Jul 23, 12:00 UTCJul 23, 13:00 UTC1h 0m
2026-07-23 HBKGN - Jul 23, 09:10 UTCJul 23, 09:45 UTC35m
2026-07-23 HBKGN - Jul 23, 07:10 UTCJul 23, 07:55 UTC45m
2026-07-22 HBKGN BRN → BRN Jul 22, 18:00 UTCJul 22, 18:35 UTC35m
2026-07-22 HBKGN - Jul 22, 13:15 UTCJul 22, 14:00 UTC45m
2026-07-22 HBKGN - Jul 22, 11:45 UTCJul 22, 12:20 UTC35m
2026-07-21 HBKGN BRN → BRN Jul 21, 12:15 UTCJul 21, 12:50 UTC35m
2026-07-21 HBKGN BRN → BRN Jul 21, 09:25 UTCJul 21, 09:50 UTC25m
2026-07-21 HBKGN BRN → BRN Jul 21, 08:55 UTCJul 21, 09:20 UTC25m
2026-07-21 HBKGN BRN → BRN Jul 21, 07:40 UTCJul 21, 08:35 UTC55m
2026-07-21 HBKGN - Jul 21, 06:50 UTCJul 21, 07:15 UTC25m
2026-07-21 HBKGN BRN → BRN Jul 21, 06:10 UTCJul 21, 06:45 UTC35m
2026-07-20 HBKGN BRN → BRN Jul 20, 17:05 UTCJul 20, 18:00 UTC55m
2026-07-20 HBKGN BRN → BRN Jul 20, 12:55 UTCJul 20, 13:35 UTC40m
2026-07-20 HBKGN - Jul 20, 08:50 UTCJul 20, 09:45 UTC55m
2026-07-20 HBKGN BRN → BRN Jul 20, 07:30 UTCJul 20, 08:25 UTC55m
2026-07-20 HBKGN BRN → BRN Jul 20, 06:15 UTCJul 20, 07:00 UTC45m
2026-07-19 HBKGN BRN → BRN Jul 19, 15:55 UTCJul 19, 16:30 UTC35m
2026-07-19 HBKGN - Jul 19, 09:25 UTCJul 19, 09:45 UTC20m
2026-07-19 HBKGN - Jul 19, 08:15 UTCJul 19, 08:35 UTC20m
2026-07-18 HBKGN BRN → BRN Jul 18, 13:55 UTCJul 18, 14:10 UTC15m
2026-07-18 HBKGN BRN → BRN Jul 18, 11:50 UTCJul 18, 12:30 UTC40m
2026-07-18 HBKGN - Jul 18, 08:45 UTCJul 18, 09:15 UTC30m
2026-07-18 HBKGN - Jul 18, 07:10 UTCJul 18, 07:50 UTC40m
2026-07-17 HBKGN - Jul 17, 08:30 UTCJul 17, 09:10 UTC40m
2026-07-17 HBKGN - Jul 17, 07:25 UTCJul 17, 08:04 UTC40m
2026-07-17 HBKGN BRN → BRN Jul 17, 06:15 UTCJul 17, 07:00 UTC45m
2026-07-16 HBKGN BRN → BRN Jul 16, 15:45 UTCJul 16, 16:49 UTC1h 5m
2026-07-16 HBKGN - Jul 16, 14:05 UTCJul 16, 14:40 UTC35m
2026-07-16 HBKGN BRN → BRN Jul 16, 13:05 UTCJul 16, 13:45 UTC40m
2026-07-16 HBKGN BRN → BRN Jul 16, 12:09 UTCJul 16, 12:44 UTC35m
2026-07-16 HBKGN - Jul 16, 08:40 UTCJul 16, 09:25 UTC45m
2026-07-16 HBKGN - Jul 16, 07:30 UTCJul 16, 08:15 UTC45m
2026-07-16 HBKGN BRN → BRN Jul 16, 06:15 UTCJul 16, 07:05 UTC50m
2026-07-15 HBKGN BRN → BRN Jul 15, 13:05 UTCJul 15, 13:35 UTC30m
2026-07-15 HBKGN BRN → BRN Jul 15, 09:05 UTCJul 15, 09:50 UTC45m
2026-07-15 HBKGN BRN → BRN Jul 15, 07:40 UTCJul 15, 08:35 UTC55m
2026-07-15 HBKGN BRN → BRN Jul 15, 06:15 UTCJul 15, 07:10 UTC55m
2026-07-14 HBKGN BRN → BRN Jul 14, 11:40 UTCJul 14, 11:45 UTC5m
2026-07-14 HBKGN BRN → BRN Jul 14, 08:35 UTCJul 14, 09:15 UTC40m
2026-07-14 HBKGN BRN → BRN Jul 14, 07:20 UTCJul 14, 07:55 UTC35m

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 HB-KGN page for operator, model, and routing details .

Mode-S 4B1B11 frequently asked

What is Mode-S code 4B1B11?
4B1B11 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-KGN.
Where is Mode-S 4B1B11 registered?
Mode-S code 4B1B11 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1B11 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1B11, octal 22615421, decimal 4,922,129.
What flights does 4B1B11 operate?
Mode-S 4B1B11 has broadcast 1 distinct callsign, including HBKGN.