Apparatus

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sensors Mode-S transponder

4B1B12

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-KGO · BRM AERO NG-5/6 Bristell

Hex
4B1B12
Octal
22615422
Decimal
4,922,130
Country
CH
Tail
HB-KGO
Type
NG5
No current signal · last broadcast 2d ago
Flights observed
74
Distinct callsigns
1
Country
CH
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 4B1B12.

Country allocation

The ICAO 24-bit address 4B1B12 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
HBKGO - 74 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 HBKGO - May 27, 18:25 UTCMay 27, 18:40 UTC15m
2026-05-27 HBKGO - May 27, 12:20 UTCMay 27, 12:50 UTC30m
2026-05-27 HBKGO BRN → BRN May 27, 07:55 UTCMay 27, 08:45 UTC50m
2026-05-26 HBKGO BRN → BRN May 26, 11:20 UTCMay 26, 12:10 UTC50m
2026-05-26 HBKGO BRN → BRN May 26, 08:45 UTCMay 26, 09:29 UTC45m
2026-05-25 HBKGO - May 25, 14:40 UTCMay 25, 14:55 UTC15m
2026-05-25 HBKGO - May 25, 12:35 UTCMay 25, 13:35 UTC1h 0m
2026-05-25 HBKGO - May 25, 08:30 UTCMay 25, 08:40 UTC10m
2026-05-25 HBKGO - May 25, 07:15 UTCMay 25, 07:30 UTC15m
2026-05-23 HBKGO BRN → BRN May 23, 12:10 UTCMay 23, 13:15 UTC1h 5m
2026-05-23 HBKGO - May 23, 09:30 UTCMay 23, 09:50 UTC20m
2026-05-23 HBKGO BRN → BRN May 23, 08:25 UTCMay 23, 09:00 UTC35m
2026-05-23 HBKGO BRN → BRN May 23, 07:50 UTCMay 23, 08:05 UTC15m
2026-05-22 HBKGO BRN → BRN May 22, 14:05 UTCMay 22, 14:55 UTC50m
2026-05-22 HBKGO BRN → BRN May 22, 11:55 UTCMay 22, 12:45 UTC50m
2026-05-22 HBKGO BRN → BRN May 22, 08:00 UTCMay 22, 08:45 UTC45m
2026-05-21 HBKGO - May 21, 16:50 UTCMay 21, 17:25 UTC35m
2026-05-21 HBKGO - May 21, 16:01 UTCMay 21, 16:20 UTC20m
2026-05-21 HBKGO - May 21, 15:00 UTCMay 21, 15:30 UTC30m
2026-05-21 HBKGO BRN → BRN May 21, 14:15 UTCMay 21, 14:25 UTC10m
2026-05-21 HBKGO BRN → BRN May 21, 12:00 UTCMay 21, 12:45 UTC45m
2026-05-21 HBKGO BRN → BRN May 21, 08:05 UTCMay 21, 08:50 UTC45m
2026-05-21 HBKGO BRN → BRN May 21, 06:20 UTCMay 21, 06:45 UTC25m
2026-05-20 HBKGO BRN → BRN May 20, 08:00 UTCMay 20, 08:25 UTC25m
2026-05-20 HBKGO BRN → BRN May 20, 06:50 UTCMay 20, 07:25 UTC35m
2026-05-18 HBKGO BRN → BRN May 18, 07:10 UTCMay 18, 07:40 UTC30m
2026-05-17 HBKGO BRN → BRN May 17, 13:50 UTCMay 17, 14:50 UTC1h 0m
2026-05-17 HBKGO BRN → BRN May 17, 08:45 UTCMay 17, 09:35 UTC50m
2026-05-13 HBKGO BRN → BRN May 13, 12:50 UTCMay 13, 13:20 UTC30m
2026-05-12 HBKGO BRN → BRN May 12, 15:40 UTCMay 12, 16:40 UTC1h 0m
2026-05-09 HBKGO BRN → BRN May 9, 14:55 UTCMay 9, 15:25 UTC30m
2026-05-09 HBKGO BRN → BRN May 9, 10:05 UTCMay 9, 11:00 UTC55m
2026-05-09 HBKGO BRN → BRN May 9, 07:55 UTCMay 9, 08:40 UTC45m
2026-05-08 HBKGO BRN → BRN May 8, 14:45 UTCMay 8, 15:15 UTC30m
2026-05-08 HBKGO BRN → BRN May 8, 12:10 UTCMay 8, 13:05 UTC55m
2026-05-08 HBKGO BRN → BRN May 8, 08:14 UTCMay 8, 08:59 UTC45m
2026-05-02 HBKGO BRN → BRN May 2, 10:10 UTCMay 2, 10:40 UTC30m
2026-05-02 HBKGO BRN → BRN May 2, 07:45 UTCMay 2, 08:10 UTC25m
2026-05-02 HBKGO BRN → BRN May 2, 07:00 UTCMay 2, 07:20 UTC20m
2026-05-01 HBKGO BRN → BRN May 1, 08:50 UTCMay 1, 09:40 UTC50m
2026-04-30 HBKGO BRN → BRN Apr 30, 12:30 UTCApr 30, 13:10 UTC40m
2026-04-30 HBKGO BRN → BRN Apr 30, 09:50 UTCApr 30, 10:50 UTC1h 0m
2026-04-29 HBKGO BRN → BRN Apr 29, 12:00 UTCApr 29, 13:00 UTC1h 0m
2026-04-29 HBKGO BRN → BRN Apr 29, 06:49 UTCApr 29, 07:40 UTC50m
2026-04-27 HBKGO BRN → BRN Apr 27, 07:40 UTCApr 27, 08:25 UTC45m
2026-04-26 HBKGO BRN → BRN Apr 26, 09:50 UTCApr 26, 11:25 UTC1h 35m
2026-04-25 HBKGO - Apr 25, 08:25 UTCApr 25, 09:15 UTC50m
2026-04-25 HBKGO - Apr 25, 07:30 UTCApr 25, 07:50 UTC20m
2026-04-24 HBKGO - Apr 24, 07:40 UTCApr 24, 08:25 UTC45m
2026-04-23 HBKGO BRN → BRN Apr 23, 07:45 UTCApr 23, 08:45 UTC1h 0m

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

Mode-S 4B1B12 frequently asked

What is Mode-S code 4B1B12?
4B1B12 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-KGO.
Where is Mode-S 4B1B12 registered?
Mode-S code 4B1B12 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1B12 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1B12, octal 22615422, decimal 4,922,130.
What flights does 4B1B12 operate?
Mode-S 4B1B12 has broadcast 1 distinct callsign, including HBKGO.