Apparatus

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sensors Mode-S transponder

4B1804

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JCM · AIRBUS A220-300

Hex
4B1804
Octal
22614004
Decimal
4,921,348
Country
CH
Tail
HB-JCM
Type
BCS3
Transponder active on ground
Flights observed
396
Distinct callsigns
20
Country
CH
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4B1804.

Country allocation

The ICAO 24-bit address 4B1804 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
SWR4EY - 11 2026-07-13
SWR59K - 10 2026-07-13
SWR57B - 10 2026-07-14
SWR28L - 10 2026-07-13
SWR8YE - 9 2026-07-07
SWR7H - 9 2026-06-28
SWR2CY - 9 2026-07-13
SWR1ZD - 9 2026-06-28
SWR9TV - 8 2026-07-13
SWR - 7 2026-06-18
SWR8MV - 6 2026-06-28
SWR7LW - 6 2026-06-28
SWR3WG - 6 2026-07-13
SWR104C - 6 2026-07-13
SWR9PW Swiss International Air Lines 5 2026-05-30
SWR9H - 5 2026-06-28
SWR5HX - 5 2026-07-09
SWR5CD Swiss International Air Lines 5 2026-05-30
SWR4KW - 5 2026-07-07
SWR49M - 5 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWR1820 - Jul 14, 08:40 UTCJul 14, 09:00 UTC20m
2026-07-14 SWR57B - Jul 14, 06:10 UTCJul 14, 07:20 UTC1h 10m
2026-07-13 SWR28L GVA → LHR Jul 13, 19:25 UTCJul 13, 20:40 UTC1h 15m
2026-07-13 SWR4EY - Jul 13, 17:10 UTCJul 13, 18:25 UTC1h 15m
2026-07-13 SWR59K - Jul 13, 14:25 UTCJul 13, 15:45 UTC1h 20m
2026-07-13 SWR9TV FRA → GVA Jul 13, 11:00 UTCJul 13, 11:50 UTC50m
2026-07-13 SWR2CY GVA → FRA Jul 13, 08:30 UTCJul 13, 09:25 UTC55m
2026-07-13 SWR3WG FRA → GVA Jul 13, 06:20 UTCJul 13, 07:15 UTC55m
2026-07-13 SWR104C - Jul 13, 04:15 UTCJul 13, 05:05 UTC50m
2026-07-12 SWR5PM - Jul 12, 17:40 UTCJul 12, 20:45 UTC3h 5m
2026-07-12 SWR5CQ GVA → RHO Jul 12, 13:25 UTCJul 12, 16:15 UTC2h 50m
2026-07-12 SWR8HD ATH → GVA Jul 12, 09:20 UTCJul 12, 11:50 UTC2h 30m
2026-07-12 SWR1820 GVA → ATH Jul 12, 05:20 UTCJul 12, 07:40 UTC2h 20m
2026-07-11 SWR2BZ - Jul 11, 19:10 UTCJul 11, 21:25 UTC2h 15m
2026-07-11 SWR3LZ - Jul 11, 16:00 UTCJul 11, 18:15 UTC2h 15m
2026-07-11 SWR7BL - Jul 11, 12:30 UTCJul 11, 14:20 UTC1h 50m
2026-07-11 SWR955M - Jul 11, 09:25 UTCJul 11, 11:05 UTC1h 40m
2026-07-11 SWR57B LHR → GVA Jul 11, 06:40 UTCJul 11, 07:55 UTC1h 15m
2026-07-10 SWR28L GVA → LHR Jul 10, 20:00 UTCJul 10, 21:10 UTC1h 10m
2026-07-10 SWR4EY LHR → GVA Jul 10, 16:55 UTCJul 10, 18:10 UTC1h 15m
2026-07-10 SWR59K - Jul 10, 14:25 UTCJul 10, 15:40 UTC1h 15m
2026-07-10 SWR3LA - Jul 10, 10:25 UTCJul 10, 11:00 UTC35m
2026-07-10 SWR3LA ZRH → ZRH Jul 10, 10:10 UTCJul 10, 10:15 UTC5m
2026-07-10 SWR3LA ZRH → ZRH Jul 10, 09:50 UTCJul 10, 09:55 UTC5m
2026-07-09 SWR7DC BRU → ZRH Jul 9, 17:55 UTCJul 9, 18:50 UTC55m
2026-07-09 SWR8QE - Jul 9, 15:30 UTCJul 9, 16:35 UTC1h 5m
2026-07-09 SWR1KA PRG → ZRH Jul 9, 13:25 UTCJul 9, 14:15 UTC50m
2026-07-09 SWR5HX - Jul 9, 10:55 UTCJul 9, 11:55 UTC1h 0m
2026-07-09 SWR5HX ZRH → ZRH Jul 9, 10:10 UTCJul 9, 10:15 UTC5m
2026-07-09 SWR97Q - Jul 9, 08:45 UTCJul 9, 09:45 UTC1h 0m
2026-07-09 SWR187D - Jul 9, 06:45 UTCJul 9, 07:35 UTC50m
2026-07-09 SWR12K PRG → ZRH Jul 9, 04:15 UTCJul 9, 05:15 UTC1h 0m
2026-07-08 SWR5BW - Jul 8, 20:15 UTCJul 8, 21:15 UTC1h 0m
2026-07-08 SWR5BW - Jul 8, 17:55 UTCJul 8, 18:45 UTC50m
2026-07-08 SWR5MT ZRH → HAJ Jul 8, 15:50 UTCJul 8, 16:55 UTC1h 5m
2026-07-08 SWR3AV - Jul 8, 08:50 UTCJul 8, 10:25 UTC1h 35m
2026-07-08 SWR5P ZRH → MAN Jul 8, 05:30 UTCJul 8, 07:10 UTC1h 40m
2026-07-07 SWR259T FCO → ZRH Jul 7, 18:35 UTCJul 7, 19:45 UTC1h 10m
2026-07-07 SWR9BL - Jul 7, 16:15 UTCJul 7, 17:15 UTC1h 0m
2026-07-07 SWR9BL ZRH → ZRH Jul 7, 15:10 UTCJul 7, 15:20 UTC10m
2026-07-07 SWR4KW - Jul 7, 13:40 UTCJul 7, 14:35 UTC55m
2026-07-07 SWR8YE - Jul 7, 10:50 UTCJul 7, 12:10 UTC1h 20m
2026-07-07 SWR8YE - Jul 7, 07:45 UTCJul 7, 08:45 UTC1h 0m
2026-07-07 SWR97Y ZRH → BER Jul 7, 05:35 UTCJul 7, 06:45 UTC1h 10m
2026-07-06 SWR5PC ZRH → ZRH Jul 6, 19:55 UTCJul 6, 20:00 UTC5m
2026-07-06 SWR5PC LGW → ZRH Jul 6, 18:30 UTCJul 6, 19:45 UTC1h 15m
2026-07-06 SWR5GM - Jul 6, 15:40 UTCJul 6, 17:10 UTC1h 30m
2026-07-06 SWR5GM ZRH → ZRH Jul 6, 14:40 UTCJul 6, 14:45 UTC5m
2026-07-06 SWR1KA - Jul 6, 13:15 UTCJul 6, 14:10 UTC55m
2026-07-06 SWR5HX - Jul 6, 11:10 UTCJul 6, 12:10 UTC1h 0m

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

Mode-S 4B1804 frequently asked

What is Mode-S code 4B1804?
4B1804 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JCM.
Where is Mode-S 4B1804 registered?
Mode-S code 4B1804 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1804 broadcasting right now?
Mode-S 4B1804 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1804, octal 22614004, decimal 4,921,348.
What flights does 4B1804 operate?
Mode-S 4B1804 has broadcast 20 distinct callsigns, including SWR4EY, SWR59K, SWR57B, SWR28L, SWR8YE.