Apparatus

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sensors Mode-S transponder

4B1B13

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-KGP · BRM AERO Bristell B23

Hex
4B1B13
Octal
22615423
Decimal
4,922,131
Country
CH
Tail
HB-KGP
Type
BR23
No current signal · last broadcast 10h ago
Flights observed
99
Distinct callsigns
1
Country
CH
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4B1B13.

Country allocation

The ICAO 24-bit address 4B1B13 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
HBKGP - 99 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 HBKGP BRN → BRN Jun 2, 08:55 UTCJun 2, 09:25 UTC30m
2026-06-01 HBKGP BRN → BRN Jun 1, 06:50 UTCJun 1, 07:30 UTC40m
2026-05-30 HBKGP BRN → BRN May 30, 15:05 UTCMay 30, 15:40 UTC35m
2026-05-30 HBKGP BRN → BRN May 30, 08:25 UTCMay 30, 08:30 UTC5m
2026-05-30 HBKGP BRN → BRN May 30, 07:50 UTCMay 30, 08:05 UTC15m
2026-05-29 HBKGP BRN → BRN May 29, 13:50 UTCMay 29, 14:05 UTC15m
2026-05-26 HBKGP BRN → BRN May 26, 13:45 UTCMay 26, 13:54 UTC10m
2026-05-26 HBKGP BRN → BRN May 26, 06:49 UTCMay 26, 07:29 UTC40m
2026-05-25 HBKGP - May 25, 15:05 UTCMay 25, 15:45 UTC40m
2026-05-25 HBKGP - May 25, 13:00 UTCMay 25, 14:10 UTC1h 10m
2026-05-25 HBKGP - May 25, 11:25 UTCMay 25, 12:30 UTC1h 5m
2026-05-25 HBKGP - May 25, 10:20 UTCMay 25, 10:50 UTC30m
2026-05-25 HBKGP - May 25, 08:30 UTCMay 25, 08:55 UTC25m
2026-05-25 HBKGP - May 25, 07:15 UTCMay 25, 07:35 UTC20m
2026-05-23 HBKGP BRN → BRN May 23, 16:20 UTCMay 23, 17:05 UTC45m
2026-05-23 HBKGP BRN → BRN May 23, 12:50 UTCMay 23, 13:25 UTC35m
2026-05-23 HBKGP BRN → BRN May 23, 10:20 UTCMay 23, 11:15 UTC55m
2026-05-23 HBKGP BRN → BRN May 23, 07:50 UTCMay 23, 08:35 UTC45m
2026-05-22 HBKGP - May 22, 12:05 UTCMay 22, 12:15 UTC10m
2026-05-22 HBKGP BRN → BRN May 22, 11:15 UTCMay 22, 12:00 UTC45m
2026-05-22 HBKGP BRN → BRN May 22, 07:10 UTCMay 22, 08:25 UTC1h 15m
2026-05-21 HBKGP BRN → BRN May 21, 15:20 UTCMay 21, 15:55 UTC35m
2026-05-21 HBKGP BRN → BRN May 21, 12:15 UTCMay 21, 12:55 UTC40m
2026-05-21 HBKGP BRN → BRN May 21, 09:05 UTCMay 21, 09:25 UTC20m
2026-05-21 HBKGP BRN → BRN May 21, 06:50 UTCMay 21, 08:00 UTC1h 10m
2026-05-20 HBKGP BRN → BRN May 20, 14:45 UTCMay 20, 15:15 UTC30m
2026-05-20 HBKGP BRN → BRN May 20, 12:50 UTCMay 20, 13:00 UTC10m
2026-05-20 HBKGP BRN → BRN May 20, 11:55 UTCMay 20, 12:45 UTC50m
2026-05-20 HBKGP BRN → BRN May 20, 08:00 UTCMay 20, 08:30 UTC30m
2026-05-20 HBKGP BRN → BRN May 20, 06:45 UTCMay 20, 07:05 UTC20m
2026-05-19 HBKGP BRN → BRN May 19, 14:25 UTCMay 19, 15:15 UTC50m
2026-05-19 HBKGP BRN → BRN May 19, 12:15 UTCMay 19, 12:50 UTC35m
2026-05-19 HBKGP BRN → BRN May 19, 09:05 UTCMay 19, 10:00 UTC55m
2026-05-19 HBKGP BRN → BRN May 19, 06:50 UTCMay 19, 07:35 UTC45m
2026-05-18 HBKGP BRN → BRN May 18, 09:20 UTCMay 18, 09:40 UTC20m
2026-05-18 HBKGP BRN → BRN May 18, 07:40 UTCMay 18, 08:35 UTC55m
2026-05-17 HBKGP BRN → BRN May 17, 12:25 UTCMay 17, 13:20 UTC55m
2026-05-17 HBKGP BRN → BRN May 17, 09:05 UTCMay 17, 09:35 UTC30m
2026-05-13 HBKGP BRN → BRN May 13, 12:10 UTCMay 13, 12:25 UTC15m
2026-05-13 HBKGP BRN → BRN May 13, 09:25 UTCMay 13, 10:35 UTC1h 10m
2026-05-12 HBKGP BRN → BRN May 12, 16:00 UTCMay 12, 16:25 UTC25m
2026-05-09 HBKGP - May 9, 14:25 UTCMay 9, 14:40 UTC15m
2026-05-09 HBKGP - May 9, 13:20 UTCMay 9, 13:25 UTC5m
2026-05-09 HBKGP BRN → BRN May 9, 10:40 UTCMay 9, 11:50 UTC1h 10m
2026-05-09 HBKGP BRN → BRN May 9, 07:10 UTCMay 9, 08:35 UTC1h 25m
2026-05-08 HBKGP BRN → BRN May 8, 14:40 UTCMay 8, 15:10 UTC30m
2026-05-08 HBKGP BRN → BRN May 8, 12:25 UTCMay 8, 12:49 UTC25m
2026-05-08 HBKGP BRN → BRN May 8, 12:04 UTCMay 8, 12:10 UTC5m
2026-05-08 HBKGP - May 8, 09:30 UTCMay 8, 09:49 UTC20m
2026-05-08 HBKGP - May 8, 07:44 UTCMay 8, 08:49 UTC1h 5m

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

Mode-S 4B1B13 frequently asked

What is Mode-S code 4B1B13?
4B1B13 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-KGP.
Where is Mode-S 4B1B13 registered?
Mode-S code 4B1B13 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1B13 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1B13, octal 22615423, decimal 4,922,131.
What flights does 4B1B13 operate?
Mode-S 4B1B13 has broadcast 1 distinct callsign, including HBKGP.