Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4B1942

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JOS · AIRBUS A-320

Hex
4B1942
Octal
22614502
Decimal
4,921,666
Country
CH
Tail
HB-JOS
Type
A320
No current signal · last broadcast 16m ago
Flights observed
453
Distinct callsigns
20
Country
CH
Last broadcast
16m ago

Last known position

Most recent position reported by Mode-S 4B1942.

Country allocation

The ICAO 24-bit address 4B1942 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
CSW612 - 35 2026-07-08
CSW1EP - 35 2026-07-13
CSW615 - 34 2026-07-13
ENT2621 DAT Enterprise Limited 33 2026-07-08
ENT2620 DAT Enterprise Limited 32 2026-07-08
CSW2KP - 31 2026-07-13
CSW1PR - 30 2026-07-13
CSW1PM - 30 2026-07-13
CSW6KP - 28 2026-07-08
CSW3PR - 28 2026-07-08
CSW631 - 26 2026-07-11
CSW630 - 26 2026-07-11
CSW444 - 22 2026-07-12
CSW445 - 11 2026-07-11
CSW638 - 8 2026-07-09
CSW639 - 6 2026-07-09
CSW610 - 5 2026-07-14
CSW782 - 4 2026-07-10
CSW632 - 3 2026-07-12
CSW5611 - 3 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSW5611 - Jul 14, 06:50 UTCJul 14, 08:30 UTC1h 40m
2026-07-14 CSW610 - Jul 14, 04:20 UTCJul 14, 05:40 UTC1h 20m
2026-07-13 CSW615 - Jul 13, 18:10 UTCJul 13, 20:00 UTC1h 50m
2026-07-13 CSW2KP - Jul 13, 15:10 UTCJul 13, 16:45 UTC1h 35m
2026-07-13 CSW1PM - Jul 13, 12:40 UTCJul 13, 14:10 UTC1h 30m
2026-07-13 CSW1EP - Jul 13, 09:20 UTCJul 13, 11:40 UTC2h 20m
2026-07-13 CSW1PR - Jul 13, 07:05 UTCJul 13, 08:50 UTC1h 45m
2026-07-13 CSW610 - Jul 13, 04:20 UTCJul 13, 05:45 UTC1h 25m
2026-07-13 CSW1615 - Jul 13, 01:30 UTCJul 13, 03:15 UTC1h 45m
2026-07-12 CSW2KP - Jul 12, 20:15 UTCJul 12, 22:10 UTC1h 55m
2026-07-12 CSW444 ZRH → ZRH Jul 12, 09:40 UTCJul 12, 19:30 UTC9h 50m
2026-07-12 CSW633 SKP → ZRH Jul 12, 07:15 UTCJul 12, 09:05 UTC1h 50m
2026-07-12 CSW632 - Jul 12, 04:30 UTCJul 12, 05:50 UTC1h 20m
2026-07-11 CSW631 - Jul 11, 19:35 UTCJul 11, 21:20 UTC1h 45m
2026-07-11 CSW630 - Jul 11, 16:30 UTCJul 11, 18:05 UTC1h 35m
2026-07-11 CSW445 - Jul 11, 12:30 UTCJul 11, 15:25 UTC2h 55m
2026-07-11 CSW444 - Jul 11, 05:40 UTCJul 11, 12:10 UTC6h 30m
2026-07-11 CSW444 ZRH → ZRH Jul 11, 04:40 UTCJul 11, 05:01 UTC20m
2026-07-11 CSW5605 - Jul 11, 02:55 UTCJul 11, 04:35 UTC1h 40m
2026-07-10 CSW1602 - Jul 10, 20:55 UTCJul 10, 22:10 UTC1h 15m
2026-07-10 CSW631 - Jul 10, 17:55 UTCJul 10, 20:30 UTC2h 35m
2026-07-10 CSW630 - Jul 10, 15:05 UTCJul 10, 16:30 UTC1h 25m
2026-07-10 CSW782 - Jul 10, 11:00 UTCJul 10, 13:00 UTC2h 0m
2026-07-10 CSW782 - Jul 10, 08:50 UTCJul 10, 09:05 UTC15m
2026-07-10 CSW782 - Jul 10, 06:10 UTCJul 10, 07:30 UTC1h 20m
2026-07-10 CSW782 ZRH → ZRH Jul 10, 05:35 UTCJul 10, 05:50 UTC15m
2026-07-10 CSW5633 - Jul 10, 03:00 UTCJul 10, 04:55 UTC1h 55m
2026-07-09 CSW632 - Jul 9, 20:05 UTCJul 9, 21:30 UTC1h 25m
2026-07-09 CSW639 - Jul 9, 17:05 UTCJul 9, 19:00 UTC1h 55m
2026-07-09 CSW638 - Jul 9, 14:05 UTCJul 9, 15:20 UTC1h 15m
2026-07-09 CSW805 - Jul 9, 09:45 UTCJul 9, 12:35 UTC2h 50m
2026-07-09 CSW804 ZRH → KGS Jul 9, 05:05 UTCJul 9, 07:30 UTC2h 25m
2026-07-08 CSW3PR - Jul 8, 18:40 UTCJul 8, 20:25 UTC1h 45m
2026-07-08 ENT2621 STR → STR Jul 8, 15:45 UTCJul 8, 17:00 UTC1h 15m
2026-07-08 ENT2620 STR → STR Jul 8, 12:40 UTCJul 8, 14:25 UTC1h 45m
2026-07-08 CSW612 - Jul 8, 09:30 UTCJul 8, 11:00 UTC1h 30m
2026-07-08 CSW5611 - Jul 8, 06:40 UTCJul 8, 08:25 UTC1h 45m
2026-07-08 CSW6KP - Jul 8, 03:30 UTCJul 8, 05:20 UTC1h 50m
2026-07-07 CSW3PR - Jul 7, 18:40 UTCJul 7, 20:30 UTC1h 50m
2026-07-07 CSW2KP - Jul 7, 15:40 UTCJul 7, 17:15 UTC1h 35m
2026-07-07 CSW1PM - Jul 7, 12:25 UTCJul 7, 14:05 UTC1h 40m
2026-07-07 CSW1EP - Jul 7, 09:10 UTCJul 7, 10:55 UTC1h 45m
2026-07-07 CSW1PR - Jul 7, 06:50 UTCJul 7, 08:35 UTC1h 45m
2026-07-07 CSW6KP - Jul 7, 04:15 UTCJul 7, 05:40 UTC1h 25m
2026-07-06 CSW631 - Jul 6, 18:45 UTCJul 6, 20:30 UTC1h 45m
2026-07-06 CSW630 - Jul 6, 15:55 UTCJul 6, 17:25 UTC1h 30m
2026-07-06 CSW444 ZRH → ZRH Jul 6, 04:10 UTCJul 6, 14:10 UTC10h 0m
2026-07-05 CSW631 - Jul 5, 17:35 UTCJul 5, 19:15 UTC1h 40m
2026-07-05 CSW630 - Jul 5, 14:30 UTCJul 5, 15:55 UTC1h 25m
2026-07-05 CSW639 - Jul 5, 07:05 UTCJul 5, 08:45 UTC1h 40m

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

Mode-S 4B1942 frequently asked

What is Mode-S code 4B1942?
4B1942 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JOS.
Where is Mode-S 4B1942 registered?
Mode-S code 4B1942 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1942 broadcasting right now?
No active broadcast right now. Last signal was 16m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1942, octal 22614502, decimal 4,921,666.
What flights does 4B1942 operate?
Mode-S 4B1942 has broadcast 20 distinct callsigns, including CSW612, CSW1EP, CSW615, ENT2621, ENT2620.