Apparatus

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sensors Mode-S transponder

4B193E

ICAO 24-bit transponder address · allocated to Switzerland

Hex
4B193E
Octal
22614476
Decimal
4,921,662
Country
CH
No current signal · last broadcast 20d ago
Flights observed
106
Distinct callsigns
20
Country
CH
Last broadcast
20d ago

Last known position

Most recent position reported by Mode-S 4B193E.

Country allocation

The ICAO 24-bit address 4B193E 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 20 distinct

Callsign Airline Flights Last seen
CSW6KP - 12 2026-07-24
CSW1PM - 10 2026-07-26
CSW1EP - 10 2026-07-26
CSW1PR - 8 2026-07-26
CSW631 - 7 2026-07-25
CSW630 - 6 2026-07-23
CSW3PR - 6 2026-07-20
CSW2KP - 5 2026-07-24
ENT2621 DAT Enterprise Limited 4 2026-07-20
ENT2620 DAT Enterprise Limited 4 2026-07-20
CSW612 - 4 2026-07-20
CSW745 - 3 2026-07-26
CSW744 - 3 2026-07-26
CSW605 Worldwide Air Charter Systems 3 2026-07-21
CSW604 Worldwide Air Charter Systems 3 2026-07-21
CSW632 - 2 2026-07-22
CSW611 - 2 2026-07-20
CSW5611 - 2 2026-07-15
CSW5601 - 2 2026-07-16
CSW8HE - 1 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSW745 - Jul 26, 18:40 UTCJul 26, 20:10 UTC1h 30m
2026-07-26 CSW744 - Jul 26, 16:10 UTCJul 26, 17:10 UTC1h 0m
2026-07-26 CSW1PM - Jul 26, 13:30 UTCJul 26, 15:05 UTC1h 35m
2026-07-26 CSW1EP - Jul 26, 10:50 UTCJul 26, 12:20 UTC1h 30m
2026-07-26 CSW1PR - Jul 26, 04:05 UTCJul 26, 08:25 UTC4h 21m
2026-07-25 CSW631 ZRH → ZRH Jul 25, 16:30 UTCJul 25, 20:50 UTC4h 20m
2026-07-25 CSW1PM - Jul 25, 13:25 UTCJul 25, 15:00 UTC1h 35m
2026-07-25 CSW1EP - Jul 25, 10:15 UTCJul 25, 12:00 UTC1h 45m
2026-07-25 CSW1PR BSL → ZRH Jul 25, 04:15 UTCJul 25, 09:00 UTC4h 45m
2026-07-24 CSW615 - Jul 24, 19:50 UTCJul 24, 21:25 UTC1h 35m
2026-07-24 CSW2KP - Jul 24, 16:55 UTCJul 24, 18:10 UTC1h 15m
2026-07-24 CSW1PM - Jul 24, 14:10 UTCJul 24, 15:35 UTC1h 25m
2026-07-24 CSW1EP - Jul 24, 11:20 UTCJul 24, 12:50 UTC1h 30m
2026-07-24 CSW1PR - Jul 24, 08:30 UTCJul 24, 10:15 UTC1h 45m
2026-07-24 CSW6KP - Jul 24, 04:05 UTCJul 24, 05:25 UTC1h 20m
2026-07-23 CSW631 - Jul 23, 19:20 UTCJul 23, 21:00 UTC1h 40m
2026-07-23 CSW630 - Jul 23, 16:40 UTCJul 23, 18:00 UTC1h 20m
2026-07-23 CSW1PM - Jul 23, 14:00 UTCJul 23, 15:30 UTC1h 30m
2026-07-23 CSW1EP - Jul 23, 11:10 UTCJul 23, 12:40 UTC1h 30m
2026-07-23 CSW8HE - Jul 23, 06:50 UTCJul 23, 09:35 UTC2h 45m
2026-07-22 CSW8GJ - Jul 22, 14:30 UTCJul 22, 16:40 UTC2h 10m
2026-07-22 CSW632 - Jul 22, 04:55 UTCJul 22, 11:25 UTC6h 30m
2026-07-21 CSW631 - Jul 21, 18:00 UTCJul 21, 19:40 UTC1h 40m
2026-07-21 CSW630 - Jul 21, 14:45 UTCJul 21, 16:15 UTC1h 30m
2026-07-21 CSW605 PRN → ZRH Jul 21, 11:45 UTCJul 21, 13:35 UTC1h 50m
2026-07-21 CSW604 ZRH → PRN Jul 21, 08:55 UTCJul 21, 10:20 UTC1h 25m
2026-07-20 CSW3PR - Jul 20, 19:00 UTCJul 20, 20:45 UTC1h 45m
2026-07-20 ENT2621 STR → STR Jul 20, 15:55 UTCJul 20, 17:25 UTC1h 30m
2026-07-20 ENT2620 STR → STR Jul 20, 13:00 UTCJul 20, 14:55 UTC1h 55m
2026-07-20 CSW612 - Jul 20, 09:55 UTCJul 20, 11:30 UTC1h 35m
2026-07-20 CSW611 - Jul 20, 06:55 UTCJul 20, 08:40 UTC1h 45m
2026-07-20 CSW6KP - Jul 20, 04:15 UTCJul 20, 05:45 UTC1h 30m
2026-07-19 CSW745 - Jul 19, 18:20 UTCJul 19, 19:40 UTC1h 20m
2026-07-19 CSW744 - Jul 19, 15:55 UTCJul 19, 17:00 UTC1h 5m
2026-07-19 CSW1PM - Jul 19, 13:05 UTCJul 19, 14:25 UTC1h 20m
2026-07-19 CSW1EP - Jul 19, 10:15 UTCJul 19, 11:50 UTC1h 35m
2026-07-19 CSW1PR - Jul 19, 07:10 UTCJul 19, 08:50 UTC1h 40m
2026-07-19 CSW6KP - Jul 19, 04:05 UTCJul 19, 05:25 UTC1h 20m
2026-07-18 CSW3PR - Jul 18, 19:40 UTCJul 18, 21:30 UTC1h 50m
2026-07-18 ENT2621 STR → STR Jul 18, 16:40 UTCJul 18, 18:10 UTC1h 30m
2026-07-18 ENT2620 STR → STR Jul 18, 13:25 UTCJul 18, 15:00 UTC1h 35m
2026-07-18 CSW612 - Jul 18, 10:35 UTCJul 18, 11:55 UTC1h 20m
2026-07-18 CSW611 - Jul 18, 07:00 UTCJul 18, 08:45 UTC1h 45m
2026-07-18 CSW6KP - Jul 18, 04:10 UTCJul 18, 05:30 UTC1h 20m
2026-07-16 CSW3PR - Jul 16, 18:10 UTCJul 16, 19:50 UTC1h 40m
2026-07-16 CSW2KP - Jul 16, 15:19 UTCJul 16, 16:44 UTC1h 25m
2026-07-16 CSW1PM - Jul 16, 12:30 UTCJul 16, 14:05 UTC1h 35m
2026-07-16 CSW1EP - Jul 16, 09:50 UTCJul 16, 11:20 UTC1h 30m
2026-07-16 CSW5601 - Jul 16, 06:50 UTCJul 16, 08:30 UTC1h 40m
2026-07-16 CSW6KP - Jul 16, 04:05 UTCJul 16, 05:30 UTC1h 25m

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 4B193E frequently asked

What is Mode-S code 4B193E?
4B193E is an ICAO 24-bit transponder address. Allocated to Switzerland.
Where is Mode-S 4B193E registered?
Mode-S code 4B193E is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B193E broadcasting right now?
No active broadcast right now. Last signal was 20d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B193E, octal 22614476, decimal 4,921,662.
What flights does 4B193E operate?
Mode-S 4B193E has broadcast 20 distinct callsigns, including CSW6KP, CSW1PM, CSW1EP, CSW1PR, CSW631.