Apparatus

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sensors Mode-S transponder

4B4408

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-ZTW · KAMAN K-Max

Hex
4B4408
Octal
22642010
Decimal
4,932,616
Country
CH
Tail
HB-ZTW
Type
KMAX
No current signal · last broadcast 10d ago
Flights observed
57
Distinct callsigns
1
Country
CH
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S 4B4408.

Country allocation

The ICAO 24-bit address 4B4408 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
HBZTW - 57 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 HBZTW - Jul 16, 08:15 UTCJul 16, 08:45 UTC30m
2026-07-15 HBZTW - Jul 15, 13:25 UTCJul 15, 14:15 UTC50m
2026-07-13 HBZTW - Jul 13, 11:20 UTCJul 13, 12:10 UTC50m
2026-07-13 HBZTW - Jul 13, 07:10 UTCJul 13, 08:01 UTC50m
2026-07-10 HBZTW - Jul 10, 09:30 UTCJul 10, 09:40 UTC10m
2026-07-03 HBZTW - Jul 3, 13:05 UTCJul 3, 13:20 UTC15m
2026-06-25 HBZTW - Jun 25, 13:59 UTCJun 25, 14:20 UTC20m
2026-06-25 HBZTW - Jun 25, 10:35 UTCJun 25, 11:50 UTC1h 15m
2026-06-25 HBZTW - Jun 25, 09:34 UTCJun 25, 09:59 UTC25m
2026-06-24 HBZTW - Jun 24, 15:35 UTCJun 24, 15:59 UTC25m
2026-06-24 HBZTW - Jun 24, 07:30 UTCJun 24, 08:39 UTC1h 10m
2026-06-24 HBZTW - Jun 24, 06:15 UTCJun 24, 06:29 UTC15m
2026-06-18 HBZTW - Jun 18, 13:15 UTCJun 18, 13:45 UTC30m
2026-06-18 HBZTW - Jun 18, 11:10 UTCJun 18, 11:40 UTC30m
2026-06-15 HBZTW - Jun 15, 14:00 UTCJun 15, 14:30 UTC30m
2026-06-15 HBZTW - Jun 15, 12:39 UTCJun 15, 13:25 UTC45m
2026-06-15 HBZTW - Jun 15, 12:00 UTCJun 15, 12:35 UTC35m
2026-06-15 HBZTW - Jun 15, 10:09 UTCJun 15, 10:15 UTC5m
2026-06-15 HBZTW - Jun 15, 08:29 UTCJun 15, 08:40 UTC10m
2026-06-15 HBZTW - Jun 15, 07:35 UTCJun 15, 07:50 UTC15m
2026-06-15 HBZTW - Jun 15, 06:49 UTCJun 15, 06:55 UTC5m
2026-06-11 HBZTW - Jun 11, 13:25 UTCJun 11, 13:45 UTC20m
2026-06-11 HBZTW - Jun 11, 08:35 UTCJun 11, 09:00 UTC25m
2026-06-11 HBZTW - Jun 11, 08:10 UTCJun 11, 08:15 UTC5m
2026-06-11 HBZTW - Jun 11, 05:30 UTCJun 11, 05:40 UTC10m
2026-06-10 HBZTW - Jun 10, 06:25 UTCJun 10, 06:45 UTC20m
2026-06-08 HBZTW - Jun 8, 05:40 UTCJun 8, 05:50 UTC10m
2026-06-03 HBZTW - Jun 3, 15:20 UTCJun 3, 15:55 UTC35m
2026-06-03 HBZTW - Jun 3, 14:20 UTCJun 3, 14:55 UTC35m
2026-06-03 HBZTW - Jun 3, 12:55 UTCJun 3, 13:00 UTC5m
2026-06-03 HBZTW - Jun 3, 11:50 UTCJun 3, 12:20 UTC30m
2026-06-02 HBZTW - Jun 2, 09:40 UTCJun 2, 10:55 UTC1h 15m
2026-05-29 HBZTW - May 29, 10:15 UTCMay 29, 10:25 UTC10m
2026-05-29 HBZTW - May 29, 09:55 UTCMay 29, 10:00 UTC5m
2026-05-29 HBZTW - May 29, 09:25 UTCMay 29, 09:50 UTC25m
2026-05-29 HBZTW - May 29, 05:15 UTCMay 29, 05:50 UTC35m
2026-05-28 HBZTW - May 28, 14:15 UTCMay 28, 15:20 UTC1h 5m
2026-05-28 HBZTW - May 28, 13:45 UTCMay 28, 14:00 UTC15m
2026-05-28 HBZTW - May 28, 11:55 UTCMay 28, 12:05 UTC10m
2026-05-28 HBZTW - May 28, 10:10 UTCMay 28, 10:30 UTC20m
2026-05-28 HBZTW - May 28, 08:35 UTCMay 28, 09:55 UTC1h 20m
2026-05-28 HBZTW - May 28, 06:25 UTCMay 28, 07:15 UTC50m
2026-05-27 HBZTW - May 27, 13:10 UTCMay 27, 13:20 UTC10m
2026-05-27 HBZTW - May 27, 11:45 UTCMay 27, 11:55 UTC10m
2026-05-13 HBZTW - May 13, 13:45 UTCMay 13, 14:00 UTC15m
2026-05-11 HBZTW - May 11, 09:55 UTCMay 11, 10:20 UTC25m
2026-05-11 HBZTW - May 11, 07:35 UTCMay 11, 08:45 UTC1h 10m
2026-05-11 HBZTW - May 11, 06:50 UTCMay 11, 07:00 UTC10m
2026-05-11 HBZTW - May 11, 06:25 UTCMay 11, 06:35 UTC10m
2026-05-08 HBZTW - May 8, 13:30 UTCMay 8, 14:00 UTC30m

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

Mode-S 4B4408 frequently asked

What is Mode-S code 4B4408?
4B4408 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-ZTW.
Where is Mode-S 4B4408 registered?
Mode-S code 4B4408 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B4408 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B4408, octal 22642010, decimal 4,932,616.
What flights does 4B4408 operate?
Mode-S 4B4408 has broadcast 1 distinct callsign, including HBZTW.