Apparatus

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sensors Mode-S transponder

4B1801

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JCJ · AIRBUS A220-300

Hex
4B1801
Octal
22614001
Decimal
4,921,345
Country
CH
Tail
HB-JCJ
Type
BCS3
No current signal · last broadcast 9h ago
Flights observed
233
Distinct callsigns
20
Country
CH
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 4B1801.

Country allocation

The ICAO 24-bit address 4B1801 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
SWR9TV Swiss International Air Lines 5 2026-05-17
SWR461V Swiss International Air Lines 5 2026-05-28
SWR2CY Swiss International Air Lines 5 2026-05-17
SWR104C Swiss International Air Lines 5 2026-05-17
SWR9D Swiss International Air Lines 4 2026-05-10
SWR4ZW Swiss International Air Lines 4 2026-05-05
SWR3WG Swiss International Air Lines 4 2026-05-17
SWR3CX Swiss International Air Lines 4 2026-05-24
SWR357 - 4 2026-04-15
SWR2MB Swiss International Air Lines 4 2026-05-28
SWR8YE Swiss International Air Lines 3 2026-05-07
SWR8GY Swiss International Air Lines 3 2026-05-17
SWR82P Swiss International Air Lines 3 2026-05-06
SWR7BL Swiss International Air Lines 3 2026-05-27
SWR70W Swiss International Air Lines 3 2026-05-17
SWR5BW Swiss International Air Lines 3 2026-05-22
SWR59K Swiss International Air Lines 3 2026-05-27
SWR57B Swiss International Air Lines 3 2026-05-28
SWR4EY Swiss International Air Lines 3 2026-05-27
SWR3TA - 3 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SWR8HD ATH → GVA May 29, 13:40 UTCMay 29, 16:15 UTC2h 35m
2026-05-29 SWR1820 GVA → ATH May 29, 09:50 UTCMay 29, 12:20 UTC2h 30m
2026-05-28 SWR2MB FRA → GVA May 28, 20:20 UTCMay 28, 21:10 UTC50m
2026-05-28 SWR461V GVA → FRA May 28, 17:00 UTCMay 28, 17:55 UTC55m
2026-05-28 SWR13Y LHR → GVA May 28, 14:05 UTCMay 28, 15:20 UTC1h 15m
2026-05-28 SWR29K GVA → LHR May 28, 11:20 UTCMay 28, 12:50 UTC1h 30m
2026-05-28 SWR57B LHR → GVA May 28, 06:25 UTCMay 28, 07:35 UTC1h 10m
2026-05-27 SWR28L GVA → LHR May 27, 19:00 UTCMay 27, 20:15 UTC1h 15m
2026-05-27 SWR4EY LHR → GVA May 27, 16:50 UTCMay 27, 17:55 UTC1h 5m
2026-05-27 SWR59K GVA → LHR May 27, 14:00 UTCMay 27, 15:20 UTC1h 20m
2026-05-27 SWR7BL PRN → GVA May 27, 08:10 UTCMay 27, 10:00 UTC1h 50m
2026-05-27 SWR955M GVA → PRN May 27, 05:04 UTCMay 27, 06:49 UTC1h 45m
2026-05-26 SWR8YB LIS → GVA May 26, 14:24 UTCMay 26, 16:24 UTC2h 0m
2026-05-26 SWR32F GVA → LIS May 26, 10:29 UTCMay 26, 12:50 UTC2h 20m
2026-05-26 SWR57B LHR → GVA May 26, 06:20 UTCMay 26, 07:40 UTC1h 20m
2026-05-25 SWR28L GVA → LHR May 25, 19:10 UTCMay 25, 20:19 UTC1h 10m
2026-05-25 SWR4EY LHR → GVA May 25, 16:50 UTCMay 25, 18:15 UTC1h 25m
2026-05-25 SWR59K GVA → LHR May 25, 14:05 UTCMay 25, 15:25 UTC1h 20m
2026-05-25 SWR3LA ZRH → GVA May 25, 10:35 UTCMay 25, 11:05 UTC30m
2026-05-25 SWR3LA ZRH → GVA May 25, 07:45 UTCMay 25, 08:40 UTC55m
2026-05-25 SWR4WF ZRH → PRG May 25, 05:45 UTCMay 25, 06:40 UTC55m
2026-05-25 SWR4WF ZRH → PRG May 25, 04:05 UTCMay 25, 04:40 UTC35m
2026-05-24 SWR7LW NCE → GVA May 24, 19:00 UTCMay 24, 19:40 UTC40m
2026-05-24 SWR9H GVA → NCE May 24, 17:15 UTCMay 24, 18:00 UTC45m
2026-05-24 SWR3CX ZRH → AGP May 24, 15:30 UTCMay 24, 16:05 UTC35m
2026-05-24 SWR7ZX WRO → ZRH May 24, 13:15 UTCMay 24, 14:20 UTC1h 5m
2026-05-24 SWR5TQ ZRH → WRO May 24, 10:15 UTCMay 24, 11:50 UTC1h 35m
2026-05-23 SWR9VE ZRH → OPO May 23, 18:10 UTCMay 23, 19:35 UTC1h 25m
2026-05-23 SWR3GH ZRH → BCN May 23, 15:40 UTCMay 23, 16:55 UTC1h 15m
2026-05-23 SWR2PA BRU → ZRH May 23, 13:35 UTCMay 23, 14:25 UTC50m
2026-05-23 SWR8WA ZRH → ATH May 23, 11:25 UTCMay 23, 12:15 UTC50m
2026-05-23 SWR8WA ZRH → ATH May 23, 09:00 UTCMay 23, 09:50 UTC50m
2026-05-23 SWR4EA - May 23, 06:45 UTCMay 23, 07:35 UTC50m
2026-05-23 SWR12K LHR → GVA May 23, 04:25 UTCMay 23, 05:20 UTC55m
2026-05-22 SWR5BW ZRH → PRG May 22, 20:25 UTCMay 22, 21:20 UTC55m
2026-05-22 SWR7DC BRU → ZRH May 22, 18:10 UTCMay 22, 18:55 UTC45m
2026-05-22 SWR7DC BRU → ZRH May 22, 15:50 UTCMay 22, 16:45 UTC55m
2026-05-22 SWR8QE ZRH → BRU May 22, 13:25 UTCMay 22, 14:15 UTC50m
2026-05-22 SWR9KL ZRH → BLQ May 22, 11:25 UTCMay 22, 12:05 UTC40m
2026-05-22 SWR5DA SJJ → ZRH May 22, 08:45 UTCMay 22, 10:05 UTC1h 20m
2026-05-22 SWR4PC ZRH → SJJ May 22, 06:30 UTCMay 22, 07:40 UTC1h 10m
2026-05-21 SWR52F DUS → ZRH May 21, 18:50 UTCMay 21, 19:45 UTC55m
2026-05-21 SWR4WP ZRH → DUS May 21, 16:50 UTCMay 21, 17:45 UTC55m
2026-05-21 SWR51D MAN → ZRH May 21, 13:55 UTCMay 21, 15:30 UTC1h 35m
2026-05-21 SWR2LB ZRH → MAN May 21, 10:45 UTCMay 21, 12:25 UTC1h 40m
2026-05-21 SWR2LB ZRH → MAN May 21, 08:25 UTCMay 21, 09:20 UTC55m
2026-05-21 SWR3PE ZRH → CDG May 21, 06:05 UTCMay 21, 07:00 UTC55m
2026-05-20 SWR1883 CLJ → ZRH May 20, 14:40 UTCMay 20, 15:55 UTC1h 15m
2026-05-20 SWR1882 ZRH → CLJ May 20, 10:20 UTCMay 20, 11:55 UTC1h 35m
2026-05-19 SWR1MH AMS → ZRH May 19, 17:55 UTCMay 19, 19:00 UTC1h 5m

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

Mode-S 4B1801 frequently asked

What is Mode-S code 4B1801?
4B1801 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JCJ.
Where is Mode-S 4B1801 registered?
Mode-S code 4B1801 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1801 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1801, octal 22614001, decimal 4,921,345.
What flights does 4B1801 operate?
Mode-S 4B1801 has broadcast 20 distinct callsigns, including SWR9TV, SWR461V, SWR2CY, SWR104C, SWR9D.