Apparatus

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sensors Mode-S transponder

4B0ACB

ICAO 24-bit transponder address · allocated to Switzerland

Hex
4B0ACB
Octal
22605313
Decimal
4,917,963
Country
CH
No current signal · last broadcast 16h ago
Flights observed
47
Distinct callsigns
1
Country
CH
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 4B0ACB.

Country allocation

The ICAO 24-bit address 4B0ACB 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
HBECH - 47 2026-07-24

Recent flights last 47

DateFlightRouteTakeoffLandingDuration
2026-07-24 HBECH - Jul 24, 10:15 UTCJul 24, 11:00 UTC45m
2026-07-24 HBECH - Jul 24, 08:45 UTCJul 24, 09:25 UTC40m
2026-07-23 HBECH - Jul 23, 15:25 UTCJul 23, 15:50 UTC25m
2026-07-23 HBECH - Jul 23, 14:10 UTCJul 23, 14:40 UTC30m
2026-07-23 HBECH - Jul 23, 12:25 UTCJul 23, 12:45 UTC20m
2026-07-23 HBECH - Jul 23, 11:20 UTCJul 23, 11:50 UTC30m
2026-07-22 HBECH - Jul 22, 14:50 UTCJul 22, 15:00 UTC10m
2026-07-22 HBECH - Jul 22, 13:15 UTCJul 22, 13:25 UTC10m
2026-07-20 HBECH - Jul 20, 14:25 UTCJul 20, 14:55 UTC30m
2026-07-20 HBECH - Jul 20, 12:15 UTCJul 20, 13:15 UTC1h 0m
2026-07-20 HBECH - Jul 20, 09:20 UTCJul 20, 09:35 UTC15m
2026-07-20 HBECH - Jul 20, 08:05 UTCJul 20, 08:20 UTC15m
2026-07-17 HBECH - Jul 17, 09:40 UTCJul 17, 10:15 UTC35m
2026-07-17 HBECH BRN → ACH Jul 17, 07:44 UTCJul 17, 08:35 UTC50m
2026-07-17 HBECH - Jul 17, 06:00 UTCJul 17, 06:45 UTC45m
2026-07-16 HBECH - Jul 16, 09:45 UTCJul 16, 10:40 UTC55m
2026-07-16 HBECH - Jul 16, 07:45 UTCJul 16, 08:05 UTC20m
2026-07-15 HBECH - Jul 15, 09:25 UTCJul 15, 10:00 UTC35m
2026-07-15 HBECH - Jul 15, 07:15 UTCJul 15, 07:45 UTC30m
2026-07-11 HBECH - Jul 11, 09:00 UTCJul 11, 10:30 UTC1h 30m
2026-07-10 HBECH - Jul 10, 17:55 UTCJul 10, 18:25 UTC30m
2026-07-10 HBECH - Jul 10, 16:45 UTCJul 10, 17:40 UTC55m
2026-07-10 HBECH - Jul 10, 14:20 UTCJul 10, 15:40 UTC1h 20m
2026-07-10 HBECH - Jul 10, 12:15 UTCJul 10, 12:40 UTC25m
2026-07-09 HBECH - Jul 9, 14:45 UTCJul 9, 15:30 UTC45m
2026-07-09 HBECH - Jul 9, 12:50 UTCJul 9, 13:30 UTC40m
2026-07-09 HBECH - Jul 9, 09:30 UTCJul 9, 10:05 UTC35m
2026-07-09 HBECH - Jul 9, 07:40 UTCJul 9, 08:05 UTC25m
2026-07-08 HBECH - Jul 8, 13:45 UTCJul 8, 14:30 UTC45m
2026-07-08 HBECH - Jul 8, 06:05 UTCJul 8, 07:00 UTC55m
2026-07-07 HBECH - Jul 7, 13:30 UTCJul 7, 13:40 UTC10m
2026-07-07 HBECH - Jul 7, 12:25 UTCJul 7, 12:35 UTC10m
2026-07-06 HBECH - Jul 6, 05:15 UTCJul 6, 06:35 UTC1h 20m
2026-07-04 HBECH - Jul 4, 12:30 UTCJul 4, 13:25 UTC55m
2026-07-04 HBECH - Jul 4, 11:10 UTCJul 4, 11:25 UTC15m
2026-07-04 HBECH - Jul 4, 07:10 UTCJul 4, 08:50 UTC1h 40m
2026-06-30 HBECH - Jun 30, 10:15 UTCJun 30, 10:30 UTC15m
2026-06-30 HBECH - Jun 30, 08:25 UTCJun 30, 08:40 UTC15m
2026-06-29 HBECH - Jun 29, 12:55 UTCJun 29, 13:14 UTC20m
2026-06-24 HBECH - Jun 24, 15:00 UTCJun 24, 15:14 UTC15m
2026-06-24 HBECH - Jun 24, 13:50 UTCJun 24, 14:24 UTC35m
2026-06-23 HBECH - Jun 23, 08:50 UTCJun 23, 09:09 UTC20m
2026-06-23 HBECH - Jun 23, 07:09 UTCJun 23, 07:55 UTC45m
2026-06-22 HBECH - Jun 22, 08:54 UTCJun 22, 09:49 UTC55m
2026-06-10 HBECH - Jun 10, 13:50 UTCJun 10, 14:25 UTC35m
2026-06-10 HBECH - Jun 10, 09:10 UTCJun 10, 12:10 UTC3h 0m
2026-06-09 HBECH - Jun 9, 14:30 UTCJun 9, 14:45 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.

Mode-S 4B0ACB frequently asked

What is Mode-S code 4B0ACB?
4B0ACB is an ICAO 24-bit transponder address. Allocated to Switzerland.
Where is Mode-S 4B0ACB registered?
Mode-S code 4B0ACB is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B0ACB broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B0ACB, octal 22605313, decimal 4,917,963.
What flights does 4B0ACB operate?
Mode-S 4B0ACB has broadcast 1 distinct callsign, including HBECH.