Apparatus

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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
Broadcasting now · callsign HBKGN · 3,100 ft
Flights observed
218
Distinct callsigns
1
Country
CH
Last broadcast
13h ago

Current position

4B1B11 is currently broadcasting. Map zoomed to live position.

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 - 218 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 HBKGN BRN → BRN Jul 13, 15:20 UTCJul 13, 16:35 UTC1h 15m
2026-07-13 HBKGN - Jul 13, 13:00 UTCJul 13, 13:35 UTC35m
2026-07-13 HBKGN - Jul 13, 11:45 UTCJul 13, 12:15 UTC30m
2026-07-12 HBKGN - Jul 12, 07:25 UTCJul 12, 08:50 UTC1h 25m
2026-07-11 HBKGN BRN → BRN Jul 11, 08:05 UTCJul 11, 08:50 UTC45m
2026-07-10 HBKGN BRN → BRN Jul 10, 13:25 UTCJul 10, 14:10 UTC45m
2026-07-10 HBKGN BRN → BRN Jul 10, 08:00 UTCJul 10, 08:25 UTC25m
2026-07-09 HBKGN - Jul 9, 08:15 UTCJul 9, 08:55 UTC40m
2026-07-09 HBKGN - Jul 9, 06:45 UTCJul 9, 07:25 UTC40m
2026-07-08 HBKGN BRN → BRN Jul 8, 15:05 UTCJul 8, 16:05 UTC1h 0m
2026-07-06 HBKGN BRN → BRN Jul 6, 14:35 UTCJul 6, 15:05 UTC30m
2026-07-06 HBKGN BRN → BRN Jul 6, 09:50 UTCJul 6, 10:20 UTC30m
2026-07-06 HBKGN BRN → BRN Jul 6, 07:15 UTCJul 6, 07:25 UTC10m
2026-07-06 HBKGN BRN → BRN Jul 6, 06:40 UTCJul 6, 07:05 UTC25m
2026-07-05 HBKGN - Jul 5, 12:10 UTCJul 5, 12:30 UTC20m
2026-07-05 HBKGN - Jul 5, 10:00 UTCJul 5, 10:25 UTC25m
2026-07-05 HBKGN BRN → BRN Jul 5, 08:05 UTCJul 5, 09:05 UTC1h 0m
2026-07-04 HBKGN BRN → BRN Jul 4, 07:10 UTCJul 4, 08:05 UTC55m
2026-07-03 HBKGN - Jul 3, 16:20 UTCJul 3, 17:00 UTC40m
2026-07-03 HBKGN BRN → BRN Jul 3, 15:50 UTCJul 3, 15:55 UTC5m
2026-07-03 HBKGN BRN → BRN Jul 3, 11:05 UTCJul 3, 12:00 UTC55m
2026-07-03 HBKGN - Jul 3, 09:10 UTCJul 3, 09:45 UTC35m
2026-07-03 HBKGN - Jul 3, 07:55 UTCJul 3, 08:10 UTC15m
2026-07-03 HBKGN - Jul 3, 06:30 UTCJul 3, 07:25 UTC55m
2026-07-02 HBKGN - Jul 2, 17:35 UTCJul 2, 17:55 UTC20m
2026-07-02 HBKGN - Jul 2, 16:10 UTCJul 2, 16:45 UTC35m
2026-07-02 HBKGN BRN → BRN Jul 2, 13:55 UTCJul 2, 14:05 UTC10m
2026-07-02 HBKGN BRN → BRN Jul 2, 13:35 UTCJul 2, 13:45 UTC10m
2026-07-02 HBKGN BRN → BRN Jul 2, 11:55 UTCJul 2, 12:30 UTC35m
2026-07-02 HBKGN BRN → BRN Jul 2, 09:40 UTCJul 2, 09:50 UTC10m
2026-07-02 HBKGN - Jul 2, 09:10 UTCJul 2, 09:25 UTC15m
2026-07-02 HBKGN - Jul 2, 07:05 UTCJul 2, 08:05 UTC1h 0m
2026-07-01 HBKGN BRN → BRN Jul 1, 14:40 UTCJul 1, 15:30 UTC50m
2026-07-01 HBKGN BRN → BRN Jul 1, 12:45 UTCJul 1, 13:30 UTC45m
2026-07-01 HBKGN BRN → BRN Jul 1, 09:25 UTCJul 1, 09:30 UTC5m
2026-07-01 HBKGN BRN → BRN Jul 1, 06:50 UTCJul 1, 06:55 UTC5m
2026-06-30 HBKGN BRN → BRN Jun 30, 10:35 UTCJun 30, 11:45 UTC1h 10m
2026-06-30 HBKGN BRN → BRN Jun 30, 08:40 UTCJun 30, 09:40 UTC1h 0m
2026-06-30 HBKGN BRN → BRN Jun 30, 06:45 UTCJun 30, 07:20 UTC35m
2026-06-29 HBKGN BRN → BRN Jun 29, 13:14 UTCJun 29, 14:25 UTC1h 10m
2026-06-29 HBKGN BRN → BRN Jun 29, 11:50 UTCJun 29, 12:29 UTC40m
2026-06-29 HBKGN - Jun 29, 08:50 UTCJun 29, 09:40 UTC50m
2026-06-29 HBKGN - Jun 29, 07:25 UTCJun 29, 08:09 UTC45m
2026-06-27 HBKGN BRN → BRN Jun 27, 07:04 UTCJun 27, 08:05 UTC1h 0m
2026-06-26 HBKGN BRN → BRN Jun 26, 07:20 UTCJun 26, 08:24 UTC1h 5m
2026-06-25 HBKGN BRN → BRN Jun 25, 07:25 UTCJun 25, 08:14 UTC50m
2026-06-24 HBKGN - Jun 24, 16:59 UTCJun 24, 17:45 UTC45m
2026-06-24 HBKGN - Jun 24, 15:39 UTCJun 24, 16:14 UTC35m
2026-06-24 HBKGN BRN → BRN Jun 24, 13:00 UTCJun 24, 14:00 UTC1h 0m
2026-06-24 HBKGN - Jun 24, 09:00 UTCJun 24, 09:15 UTC15m

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?
Yes. Mode-S 4B1B11 is currently airborne.
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.