Apparatus

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sensors Mode-S transponder

4B4443

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-ZWD · BELL 505 JetRanger X

Hex
4B4443
Octal
22642103
Decimal
4,932,675
Country
CH
Tail
HB-ZWD
Type
B505
No current signal · last broadcast 10h ago
Flights observed
128
Distinct callsigns
1
Country
CH
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4B4443.

Country allocation

The ICAO 24-bit address 4B4443 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
HBZWD - 128 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 HBZWD - Jul 17, 13:35 UTCJul 17, 16:00 UTC2h 25m
2026-07-17 HBZWD - Jul 17, 11:10 UTCJul 17, 12:55 UTC1h 45m
2026-07-17 HBZWD - Jul 17, 10:15 UTCJul 17, 10:30 UTC15m
2026-07-17 HBZWD - Jul 17, 08:25 UTCJul 17, 08:54 UTC30m
2026-07-17 HBZWD - Jul 17, 08:10 UTCJul 17, 08:20 UTC10m
2026-07-17 HBZWD BRN → BRN Jul 17, 06:50 UTCJul 17, 07:35 UTC45m
2026-07-16 HBZWD - Jul 16, 12:09 UTCJul 16, 13:25 UTC1h 15m
2026-07-16 HBZWD - Jul 16, 09:40 UTCJul 16, 10:00 UTC20m
2026-07-16 HBZWD - Jul 16, 08:35 UTCJul 16, 09:00 UTC25m
2026-07-15 HBZWD - Jul 15, 09:20 UTCJul 15, 10:15 UTC55m
2026-07-15 HBZWD - Jul 15, 07:35 UTCJul 15, 07:55 UTC20m
2026-07-14 HBZWD - Jul 14, 13:20 UTCJul 14, 14:00 UTC40m
2026-07-14 HBZWD - Jul 14, 11:35 UTCJul 14, 12:30 UTC55m
2026-07-14 HBZWD BRN → BRN Jul 14, 07:05 UTCJul 14, 09:45 UTC2h 40m
2026-07-13 HBZWD - Jul 13, 13:45 UTCJul 13, 14:25 UTC40m
2026-07-13 HBZWD - Jul 13, 13:00 UTCJul 13, 13:40 UTC40m
2026-07-13 HBZWD - Jul 13, 11:50 UTCJul 13, 12:55 UTC1h 5m
2026-07-13 HBZWD - Jul 13, 07:20 UTCJul 13, 10:00 UTC2h 40m
2026-07-12 HBZWD BRN → BRN Jul 12, 12:10 UTCJul 12, 12:30 UTC20m
2026-07-12 HBZWD - Jul 12, 08:40 UTCJul 12, 08:55 UTC15m
2026-07-12 HBZWD - Jul 12, 07:10 UTCJul 12, 07:20 UTC10m
2026-07-12 HBZWD - Jul 12, 06:40 UTCJul 12, 07:05 UTC25m
2026-07-09 HBZWD BRN → BRN Jul 9, 08:45 UTCJul 9, 09:50 UTC1h 5m
2026-07-08 HBZWD - Jul 8, 14:05 UTCJul 8, 15:10 UTC1h 5m
2026-07-08 HBZWD - Jul 8, 12:15 UTCJul 8, 13:20 UTC1h 5m
2026-07-08 HBZWD BRN → BRN Jul 8, 09:15 UTCJul 8, 10:05 UTC50m
2026-07-08 HBZWD BRN → BRN Jul 8, 07:30 UTCJul 8, 08:30 UTC1h 0m
2026-07-07 HBZWD BRN → BRN Jul 7, 15:05 UTCJul 7, 15:55 UTC50m
2026-07-07 HBZWD - Jul 7, 13:00 UTCJul 7, 13:45 UTC45m
2026-07-04 HBZWD - Jul 4, 10:35 UTCJul 4, 10:55 UTC20m
2026-07-04 HBZWD - Jul 4, 09:00 UTCJul 4, 09:25 UTC25m
2026-07-04 HBZWD - Jul 4, 07:20 UTCJul 4, 07:40 UTC20m
2026-07-03 HBZWD - Jul 3, 10:10 UTCJul 3, 10:40 UTC30m
2026-07-03 HBZWD - Jul 3, 09:00 UTCJul 3, 09:30 UTC30m
2026-06-29 HBZWD BRN → BRN Jun 29, 15:04 UTCJun 29, 15:19 UTC15m
2026-06-28 HBZWD - Jun 28, 11:19 UTCJun 28, 11:39 UTC20m
2026-06-26 HBZWD - Jun 26, 13:30 UTCJun 26, 13:59 UTC30m
2026-06-26 HBZWD - Jun 26, 12:14 UTCJun 26, 12:34 UTC20m
2026-06-25 HBZWD - Jun 25, 12:04 UTCJun 25, 12:25 UTC20m
2026-06-25 HBZWD - Jun 25, 11:04 UTCJun 25, 11:25 UTC20m
2026-06-24 HBZWD - Jun 24, 14:15 UTCJun 24, 14:29 UTC15m
2026-06-24 HBZWD - Jun 24, 12:44 UTCJun 24, 13:05 UTC20m
2026-06-23 HBZWD - Jun 23, 15:55 UTCJun 23, 16:54 UTC1h 0m
2026-06-22 HBZWD - Jun 22, 08:35 UTCJun 22, 09:04 UTC30m
2026-06-22 HBZWD - Jun 22, 08:10 UTCJun 22, 08:29 UTC20m
2026-06-21 HBZWD - Jun 21, 14:05 UTCJun 21, 14:44 UTC40m
2026-06-21 HBZWD - Jun 21, 10:40 UTCJun 21, 10:54 UTC15m
2026-06-21 HBZWD - Jun 21, 09:29 UTCJun 21, 09:49 UTC20m
2026-06-19 HBZWD BRN → BRN Jun 19, 11:09 UTCJun 19, 12:14 UTC1h 5m
2026-06-16 HBZWD - Jun 16, 16:30 UTCJun 16, 17:15 UTC45m

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

Mode-S 4B4443 frequently asked

What is Mode-S code 4B4443?
4B4443 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-ZWD.
Where is Mode-S 4B4443 registered?
Mode-S code 4B4443 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B4443 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 4B4443, octal 22642103, decimal 4,932,675.
What flights does 4B4443 operate?
Mode-S 4B4443 has broadcast 1 distinct callsign, including HBZWD.