Apparatus

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sensors Mode-S transponder

4B43E5

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-ZSN · AEROSPATIALE AS-350 Ecureuil

Hex
4B43E5
Octal
22641745
Decimal
4,932,581
Country
CH
Tail
HB-ZSN
Type
AS50
No current signal · last broadcast 1d ago
Flights observed
76
Distinct callsigns
1
Country
CH
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4B43E5.

Country allocation

The ICAO 24-bit address 4B43E5 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
HBZSN - 76 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 HBZSN - Jul 21, 12:50 UTCJul 21, 14:05 UTC1h 15m
2026-07-21 HBZSN - Jul 21, 10:20 UTCJul 21, 10:55 UTC35m
2026-07-16 HBZSN - Jul 16, 12:44 UTCJul 16, 13:10 UTC25m
2026-07-16 HBZSN - Jul 16, 11:54 UTCJul 16, 12:14 UTC20m
2026-07-16 HBZSN - Jul 16, 08:15 UTCJul 16, 08:25 UTC10m
2026-07-16 HBZSN - Jul 16, 06:10 UTCJul 16, 07:15 UTC1h 5m
2026-07-15 HBZSN - Jul 15, 12:20 UTCJul 15, 13:30 UTC1h 10m
2026-07-15 HBZSN - Jul 15, 11:45 UTCJul 15, 12:10 UTC25m
2026-07-15 HBZSN - Jul 15, 08:30 UTCJul 15, 10:00 UTC1h 30m
2026-07-13 HBZSN - Jul 13, 14:00 UTCJul 13, 14:25 UTC25m
2026-07-13 HBZSN - Jul 13, 06:30 UTCJul 13, 07:01 UTC30m
2026-07-10 HBZSN - Jul 10, 11:50 UTCJul 10, 12:20 UTC30m
2026-07-10 HBZSN - Jul 10, 09:55 UTCJul 10, 10:50 UTC55m
2026-07-10 HBZSN - Jul 10, 06:25 UTCJul 10, 07:00 UTC35m
2026-07-07 HBZSN - Jul 7, 15:10 UTCJul 7, 15:30 UTC20m
2026-07-07 HBZSN - Jul 7, 13:30 UTCJul 7, 13:45 UTC15m
2026-07-07 HBZSN - Jul 7, 12:10 UTCJul 7, 12:30 UTC20m
2026-07-02 HBZSN - Jul 2, 09:55 UTCJul 2, 10:10 UTC15m
2026-07-02 HBZSN - Jul 2, 08:05 UTCJul 2, 08:45 UTC40m
2026-07-02 HBZSN - Jul 2, 07:20 UTCJul 2, 07:55 UTC35m
2026-06-29 HBZSN - Jun 29, 13:00 UTCJun 29, 14:04 UTC1h 5m
2026-06-25 HBZSN - Jun 25, 10:09 UTCJun 25, 10:25 UTC15m
2026-06-25 HBZSN - Jun 25, 06:35 UTCJun 25, 07:00 UTC25m
2026-06-24 HBZSN - Jun 24, 07:54 UTCJun 24, 09:55 UTC2h 0m
2026-06-23 HBZSN - Jun 23, 14:55 UTCJun 23, 15:04 UTC10m
2026-06-23 HBZSN - Jun 23, 06:55 UTCJun 23, 07:15 UTC20m
2026-06-18 HBZSN - Jun 18, 09:50 UTCJun 18, 10:10 UTC20m
2026-06-18 HBZSN - Jun 18, 08:20 UTCJun 18, 09:15 UTC55m
2026-06-18 HBZSN - Jun 18, 07:00 UTCJun 18, 07:40 UTC40m
2026-06-16 HBZSN - Jun 16, 12:14 UTCJun 16, 12:45 UTC30m
2026-06-16 HBZSN - Jun 16, 07:15 UTCJun 16, 07:45 UTC30m
2026-06-11 HBZSN - Jun 11, 12:55 UTCJun 11, 13:25 UTC30m
2026-06-11 HBZSN - Jun 11, 11:30 UTCJun 11, 11:40 UTC10m
2026-06-11 HBZSN - Jun 11, 09:50 UTCJun 11, 10:35 UTC45m
2026-06-10 HBZSN - Jun 10, 13:45 UTCJun 10, 14:10 UTC25m
2026-06-10 HBZSN - Jun 10, 13:10 UTCJun 10, 13:40 UTC30m
2026-06-10 HBZSN - Jun 10, 12:15 UTCJun 10, 13:05 UTC50m
2026-06-10 HBZSN BRN → BRN Jun 10, 08:00 UTCJun 10, 09:05 UTC1h 5m
2026-06-08 HBZSN - Jun 8, 09:50 UTCJun 8, 10:35 UTC45m
2026-06-08 HBZSN - Jun 8, 06:15 UTCJun 8, 06:50 UTC35m
2026-06-05 HBZSN - Jun 5, 14:20 UTCJun 5, 14:30 UTC10m
2026-06-05 HBZSN - Jun 5, 13:55 UTCJun 5, 14:15 UTC20m
2026-06-05 HBZSN - Jun 5, 07:15 UTCJun 5, 08:15 UTC1h 0m
2026-06-03 HBZSN - Jun 3, 13:50 UTCJun 3, 14:15 UTC25m
2026-06-03 HBZSN - Jun 3, 12:20 UTCJun 3, 12:50 UTC30m
2026-06-03 HBZSN - Jun 3, 09:55 UTCJun 3, 10:30 UTC35m
2026-06-03 HBZSN - Jun 3, 07:00 UTCJun 3, 08:05 UTC1h 5m
2026-06-02 HBZSN - Jun 2, 08:20 UTCJun 2, 08:40 UTC20m
2026-06-02 HBZSN - Jun 2, 07:40 UTCJun 2, 08:15 UTC35m
2026-06-02 HBZSN - Jun 2, 07:00 UTCJun 2, 07:35 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-ZSN page for operator, model, and routing details .

Mode-S 4B43E5 frequently asked

What is Mode-S code 4B43E5?
4B43E5 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-ZSN.
Where is Mode-S 4B43E5 registered?
Mode-S code 4B43E5 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B43E5 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B43E5, octal 22641745, decimal 4,932,581.
What flights does 4B43E5 operate?
Mode-S 4B43E5 has broadcast 1 distinct callsign, including HBZSN.