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
457
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:00 UTC

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 Swiss International Air Lines 12 2026-07-26
SWR59K Swiss International Air Lines 11 2026-07-26
SWR28L Swiss International Air Lines 11 2026-07-26
SWR57B - 10 2026-07-14
SWR2CY Swiss International Air Lines 10 2026-07-20
SWR9TV Swiss International Air Lines 9 2026-07-20
SWR8YE - 9 2026-07-07
SWR7H - 9 2026-06-28
SWR1ZD - 9 2026-06-28
SWR3WG Swiss International Air Lines 8 2026-07-25
SWR104C Swiss International Air Lines 8 2026-07-25
SWR8MV - 7 2026-07-18
SWR7LW Swiss International Air Lines 7 2026-07-24
SWR357 - 7 2026-07-19
SWR316T Swiss International Air Lines 7 2026-07-19
SWR - 7 2026-06-18
SWR9PW - 6 2026-07-16
SWR9H Swiss International Air Lines 6 2026-07-24
SWR8YB - 6 2026-07-24
SWR5CD - 6 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR28L GVA → LHR Jul 26, 19:40 UTCJul 26, 21:00 UTC1h 20m
2026-07-26 SWR4EY LHR → GVA Jul 26, 17:05 UTCJul 26, 18:15 UTC1h 10m
2026-07-26 SWR59K GVA → LHR Jul 26, 14:15 UTCJul 26, 15:40 UTC1h 25m
2026-07-26 SWR8KM FAO → GVA Jul 26, 08:00 UTCJul 26, 10:20 UTC2h 20m
2026-07-26 SWR273M GVA → FAO Jul 26, 04:45 UTCJul 26, 06:45 UTC2h 1m
2026-07-25 SWR2BZ ZTH → GVA Jul 25, 19:10 UTCJul 25, 21:30 UTC2h 20m
2026-07-25 SWR3LZ GVA → ZTH Jul 25, 16:15 UTCJul 25, 18:05 UTC1h 50m
2026-07-25 SWR7BL PRN → GVA Jul 25, 09:45 UTCJul 25, 14:45 UTC5h 0m
2026-07-25 SWR3WG FRA → GVA Jul 25, 06:35 UTCJul 25, 07:25 UTC50m
2026-07-25 SWR104C GVA → FRA Jul 25, 04:30 UTCJul 25, 05:20 UTC50m
2026-07-24 SWR7LW NCE → GVA Jul 24, 19:30 UTCJul 24, 20:25 UTC55m
2026-07-24 SWR9H GVA → NCE Jul 24, 17:50 UTCJul 24, 18:40 UTC50m
2026-07-24 SWR8YB LIS → GVA Jul 24, 14:10 UTCJul 24, 16:00 UTC1h 50m
2026-07-24 SWR32F GVA → LIS Jul 24, 10:30 UTCJul 24, 13:10 UTC2h 40m
2026-07-23 SWR96B ZRH → GVA Jul 23, 20:50 UTCJul 23, 21:25 UTC35m
2026-07-23 SWR9GD - Jul 23, 18:00 UTCJul 23, 19:30 UTC1h 30m
2026-07-23 SWR3WZ ZRH → WAW Jul 23, 15:30 UTCJul 23, 17:10 UTC1h 40m
2026-07-23 SWR241D MAD → ZRH Jul 23, 08:40 UTCJul 23, 10:35 UTC1h 55m
2026-07-23 SWR430H ZRH → MAD Jul 23, 05:30 UTCJul 23, 07:25 UTC1h 55m
2026-07-21 SWR8KY PRG → ZRH Jul 21, 18:05 UTCJul 21, 18:55 UTC50m
2026-07-21 SWR1488 ZRH → PRG Jul 21, 16:15 UTCJul 21, 17:10 UTC55m
2026-07-21 SWR868L BEG → ZRH Jul 21, 13:05 UTCJul 21, 14:45 UTC1h 40m
2026-07-21 SWR4WG ZRH → BEG Jul 21, 10:45 UTCJul 21, 12:00 UTC1h 15m
2026-07-21 SWR3KH PRG → ZRH Jul 21, 08:05 UTCJul 21, 09:00 UTC55m
2026-07-21 SWR4WF ZRH → PRG Jul 21, 05:20 UTCJul 21, 06:10 UTC50m
2026-07-20 SWR57Z MAD → ZRH Jul 20, 19:15 UTCJul 20, 21:00 UTC1h 45m
2026-07-20 SWR465K ZRH → MAD Jul 20, 15:05 UTCJul 20, 17:25 UTC2h 20m
2026-07-20 SWR8PV - Jul 20, 13:00 UTCJul 20, 13:35 UTC35m
2026-07-20 SWR9TV FRA → GVA Jul 20, 11:05 UTCJul 20, 11:50 UTC45m
2026-07-20 SWR2CY GVA → FRA Jul 20, 08:40 UTCJul 20, 09:35 UTC55m
2026-07-20 SWR3WG FRA → GVA Jul 20, 06:30 UTCJul 20, 07:25 UTC55m
2026-07-20 SWR104C GVA → FRA Jul 20, 04:25 UTCJul 20, 05:20 UTC55m
2026-07-19 SWR357 - Jul 19, 19:00 UTCJul 19, 20:10 UTC1h 10m
2026-07-19 SWR316T GVA → LHR Jul 19, 16:25 UTCJul 19, 17:45 UTC1h 20m
2026-07-19 SWR330P - Jul 19, 11:10 UTCJul 19, 14:00 UTC2h 50m
2026-07-19 SWR9AV - Jul 19, 07:15 UTCJul 19, 09:50 UTC2h 35m
2026-07-18 SWR357 - Jul 18, 20:25 UTCJul 18, 21:30 UTC1h 5m
2026-07-18 SWR316T GVA → LHR Jul 18, 18:10 UTCJul 18, 19:25 UTC1h 15m
2026-07-18 SWR8HD ATH → GVA Jul 18, 14:30 UTCJul 18, 17:05 UTC2h 35m
2026-07-18 SWR1820 GVA → ATH Jul 18, 11:00 UTCJul 18, 13:20 UTC2h 20m
2026-07-18 SWR8MV LHR → GVA Jul 18, 08:20 UTCJul 18, 09:30 UTC1h 10m
2026-07-18 SWR49M GVA → LHR Jul 18, 05:50 UTCJul 18, 07:20 UTC1h 30m
2026-07-17 SWR448G DUB → GVA Jul 17, 19:45 UTCJul 17, 21:20 UTC1h 35m
2026-07-17 SWR48X - Jul 17, 16:49 UTCJul 17, 18:34 UTC1h 45m
2026-07-17 SWR13Y - Jul 17, 14:15 UTCJul 17, 15:25 UTC1h 10m
2026-07-17 SWR29K - Jul 17, 11:35 UTCJul 17, 12:50 UTC1h 15m
2026-07-17 SWR885C - Jul 17, 07:50 UTCJul 17, 10:10 UTC2h 20m
2026-07-17 SWR2AH - Jul 17, 04:44 UTCJul 17, 06:40 UTC1h 55m
2026-07-16 SWR5CD PMI → GVA Jul 16, 20:55 UTCJul 16, 22:25 UTC1h 30m
2026-07-16 SWR9PW - Jul 16, 18:34 UTCJul 16, 19:45 UTC1h 10m

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, SWR28L, SWR57B, SWR2CY.