Apparatus

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sensors Mode-S transponder

4B443D

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B443D
Octal
22642075
Decimal
4,932,669
Country
CH
Tail
HB-ZVX
Type
AS50
Broadcasting now · callsign HBZVX · 1,375 ft
Flights observed
119
Distinct callsigns
1
Country
CH
Last broadcast
14h ago

Current position

4B443D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B443D 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
HBZVX - 119 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 HBZVX - Jul 17, 15:29 UTCJul 17, 15:49 UTC20m
2026-07-16 HBZVX - Jul 16, 13:49 UTCJul 16, 15:05 UTC1h 15m
2026-07-16 HBZVX - Jul 16, 11:50 UTCJul 16, 12:20 UTC30m
2026-07-16 HBZVX - Jul 16, 05:40 UTCJul 16, 10:10 UTC4h 30m
2026-07-14 HBZVX - Jul 14, 19:25 UTCJul 14, 20:05 UTC40m
2026-07-14 HBZVX - Jul 14, 12:25 UTCJul 14, 12:45 UTC20m
2026-07-14 HBZVX - Jul 14, 05:40 UTCJul 14, 05:50 UTC10m
2026-07-13 HBZVX - Jul 13, 05:40 UTCJul 13, 05:50 UTC10m
2026-07-10 HBZVX - Jul 10, 14:40 UTCJul 10, 15:20 UTC40m
2026-07-10 HBZVX - Jul 10, 11:55 UTCJul 10, 12:30 UTC35m
2026-07-10 HBZVX - Jul 10, 05:50 UTCJul 10, 09:10 UTC3h 20m
2026-07-09 HBZVX - Jul 9, 14:05 UTCJul 9, 14:15 UTC10m
2026-07-09 HBZVX - Jul 9, 05:40 UTCJul 9, 05:55 UTC15m
2026-07-08 HBZVX - Jul 8, 05:35 UTCJul 8, 06:35 UTC1h 0m
2026-07-07 HBZVX - Jul 7, 05:50 UTCJul 7, 06:00 UTC10m
2026-07-06 HBZVX - Jul 6, 09:15 UTCJul 6, 09:30 UTC15m
2026-07-06 HBZVX - Jul 6, 05:35 UTCJul 6, 06:05 UTC30m
2026-07-04 HBZVX - Jul 4, 08:00 UTCJul 4, 08:25 UTC25m
2026-07-03 HBZVX - Jul 3, 10:05 UTCJul 3, 10:15 UTC10m
2026-07-03 HBZVX - Jul 3, 06:05 UTCJul 3, 06:40 UTC35m
2026-07-02 HBZVX - Jul 2, 11:30 UTCJul 2, 12:15 UTC45m
2026-07-02 HBZVX - Jul 2, 05:00 UTCJul 2, 05:35 UTC35m
2026-07-01 HBZVX - Jul 1, 14:30 UTCJul 1, 14:50 UTC20m
2026-07-01 HBZVX - Jul 1, 12:00 UTCJul 1, 13:40 UTC1h 40m
2026-07-01 HBZVX - Jul 1, 08:30 UTCJul 1, 09:35 UTC1h 5m
2026-07-01 HBZVX - Jul 1, 05:45 UTCJul 1, 06:45 UTC1h 0m
2026-06-30 HBZVX - Jun 30, 15:20 UTCJun 30, 18:15 UTC2h 55m
2026-06-30 HBZVX - Jun 30, 09:45 UTCJun 30, 14:20 UTC4h 35m
2026-06-30 HBZVX - Jun 30, 03:35 UTCJun 30, 08:55 UTC5h 20m
2026-06-25 HBZVX - Jun 25, 06:25 UTCJun 25, 09:20 UTC2h 55m
2026-06-24 HBZVX - Jun 24, 05:40 UTCJun 24, 06:10 UTC30m
2026-06-20 HBZVX - Jun 20, 12:50 UTCJun 20, 14:29 UTC1h 40m
2026-06-20 HBZVX - Jun 20, 11:54 UTCJun 20, 12:14 UTC20m
2026-06-20 HBZVX - Jun 20, 08:14 UTCJun 20, 10:25 UTC2h 10m
2026-06-18 HBZVX - Jun 18, 06:25 UTCJun 18, 09:40 UTC3h 15m
2026-06-17 HBZVX - Jun 17, 11:35 UTCJun 17, 12:30 UTC55m
2026-06-17 HBZVX - Jun 17, 05:20 UTCJun 17, 05:45 UTC25m
2026-06-16 HBZVX - Jun 16, 15:35 UTCJun 16, 15:50 UTC15m
2026-06-16 HBZVX - Jun 16, 13:19 UTCJun 16, 14:15 UTC55m
2026-06-13 HBZVX - Jun 13, 13:45 UTCJun 13, 15:10 UTC1h 25m
2026-06-13 HBZVX - Jun 13, 11:40 UTCJun 13, 11:55 UTC15m
2026-06-13 HBZVX - Jun 13, 09:45 UTCJun 13, 10:20 UTC35m
2026-06-13 HBZVX - Jun 13, 08:00 UTCJun 13, 09:05 UTC1h 5m
2026-06-13 HBZVX - Jun 13, 05:50 UTCJun 13, 06:20 UTC30m
2026-06-12 HBZVX - Jun 12, 12:30 UTCJun 12, 16:15 UTC3h 45m
2026-06-12 HBZVX - Jun 12, 06:50 UTCJun 12, 10:05 UTC3h 15m
2026-06-12 HBZVX - Jun 12, 05:40 UTCJun 12, 06:00 UTC20m
2026-06-08 HBZVX - Jun 8, 15:15 UTCJun 8, 15:25 UTC10m
2026-06-05 HBZVX - Jun 5, 07:05 UTCJun 5, 08:55 UTC1h 50m
2026-06-05 HBZVX - Jun 5, 05:40 UTCJun 5, 06:15 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-ZVX page for operator, model, and routing details .

Mode-S 4B443D frequently asked

What is Mode-S code 4B443D?
4B443D is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-ZVX.
Where is Mode-S 4B443D registered?
Mode-S code 4B443D is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B443D broadcasting right now?
Yes. Mode-S 4B443D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B443D, octal 22642075, decimal 4,932,669.
What flights does 4B443D operate?
Mode-S 4B443D has broadcast 1 distinct callsign, including HBZVX.