Apparatus

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sensors Mode-S transponder

4B1803

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JCL · AIRBUS A220-300

Hex
4B1803
Octal
22614003
Decimal
4,921,347
Country
CH
Tail
HB-JCL
Type
BCS3
Broadcasting now · callsign SWR5YD · 24,600 ft
Flights observed
446
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 20:40 UTC

Current position

4B1803 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B1803 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
SWR8YE - 7 2026-06-30
SWR74D - 7 2026-07-16
SWR357 - 7 2026-07-11
SWR29K - 7 2026-07-11
SWR - 7 2026-07-18
SWR82P - 6 2026-07-15
SWR5HX Swiss International Air Lines 6 2026-07-20
SWR461V - 6 2026-06-26
SWR3WG Swiss International Air Lines 6 2026-07-23
SWR316T - 6 2026-07-11
SWR2MB - 6 2026-06-26
SWR15Y - 6 2026-07-17
SWR13Y - 6 2026-07-11
SWR104C Swiss International Air Lines 6 2026-07-23
SWR9D Swiss International Air Lines 5 2026-07-20
SWR8MV - 5 2026-06-26
SWR89T - 5 2026-07-20
SWR7LW Swiss International Air Lines 5 2026-07-26
SWR736 - 5 2026-06-19
SWR5MW Swiss International Air Lines 5 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR7LW NCE → GVA Jul 26, 20:00 UTCJul 26, 20:40 UTC40m
2026-07-26 SWR9H GVA → NCE Jul 26, 18:00 UTCJul 26, 18:55 UTC55m
2026-07-26 SWR8YB LIS → GVA Jul 26, 14:35 UTCJul 26, 16:50 UTC2h 15m
2026-07-26 SWR32F GVA → LIS Jul 26, 10:30 UTCJul 26, 12:30 UTC2h 0m
2026-07-26 SWR5CD PMI → GVA Jul 26, 07:10 UTCJul 26, 08:25 UTC1h 15m
2026-07-26 SWR9PW GOT → ZRH Jul 26, 04:45 UTCJul 26, 06:05 UTC1h 20m
2026-07-25 SWR237E CFU → GVA Jul 25, 19:40 UTCJul 25, 21:40 UTC2h 0m
2026-07-25 SWR9DF GVA → CFU Jul 25, 16:45 UTCJul 25, 18:15 UTC1h 30m
2026-07-25 SWR1ZD OPO → GVA Jul 25, 13:55 UTCJul 25, 15:45 UTC1h 50m
2026-07-25 SWR7H GVA → OPO Jul 25, 10:30 UTCJul 25, 12:35 UTC2h 5m
2026-07-25 SWR5CD PMI → GVA Jul 25, 07:30 UTCJul 25, 08:55 UTC1h 25m
2026-07-25 SWR9PW GOT → ZRH Jul 25, 04:50 UTCJul 25, 06:05 UTC1h 15m
2026-07-24 SWR885C SKG → GVA Jul 24, 07:55 UTCJul 24, 10:10 UTC2h 15m
2026-07-24 SWR2AH GVA → SKG Jul 24, 04:50 UTCJul 24, 06:50 UTC2h 0m
2026-07-23 SWR5PM RHO → GVA Jul 23, 16:50 UTCJul 23, 20:00 UTC3h 10m
2026-07-23 SWR5CQ - Jul 23, 12:40 UTCJul 23, 15:30 UTC2h 50m
2026-07-23 SWR9TV FRA → GVA Jul 23, 10:50 UTCJul 23, 11:45 UTC55m
2026-07-23 SWR2CY GVA → FRA Jul 23, 08:30 UTCJul 23, 09:30 UTC1h 0m
2026-07-23 SWR3WG FRA → GVA Jul 23, 06:20 UTCJul 23, 07:10 UTC50m
2026-07-23 SWR104C GVA → FRA Jul 23, 04:20 UTCJul 23, 05:15 UTC55m
2026-07-22 SWR2075 OPO → GVA Jul 22, 19:20 UTCJul 22, 21:05 UTC1h 45m
2026-07-22 SWR94C GVA → OPO Jul 22, 16:05 UTCJul 22, 18:10 UTC2h 5m
2026-07-21 SWR8X BER → ZRH Jul 21, 17:50 UTCJul 21, 18:50 UTC1h 0m
2026-07-21 SWR948D ZRH → BER Jul 21, 15:45 UTCJul 21, 16:55 UTC1h 10m
2026-07-21 SWR755 LUX → ZRH Jul 21, 13:40 UTCJul 21, 14:15 UTC35m
2026-07-21 SWR594C - Jul 21, 11:55 UTCJul 21, 12:35 UTC40m
2026-07-21 SWR594C BUD → ZRH Jul 21, 08:25 UTCJul 21, 09:45 UTC1h 20m
2026-07-21 SWR268A ZRH → BUD Jul 21, 05:55 UTCJul 21, 07:05 UTC1h 10m
2026-07-20 SWR105W HAM → ZRH Jul 20, 18:30 UTCJul 20, 19:45 UTC1h 15m
2026-07-20 SWR9D ZRH → HAM Jul 20, 16:30 UTCJul 20, 17:35 UTC1h 5m
2026-07-20 SWR1KA PRG → ZRH Jul 20, 13:40 UTCJul 20, 14:40 UTC1h 0m
2026-07-20 SWR5HX ZRH → PRG Jul 20, 11:45 UTCJul 20, 12:40 UTC55m
2026-07-20 SWR5MW TIA → ZRH Jul 20, 08:55 UTCJul 20, 10:30 UTC1h 35m
2026-07-20 SWR89T - Jul 20, 05:20 UTCJul 20, 06:30 UTC1h 10m
2026-07-19 SWR1CW PMI → ZRH Jul 19, 18:55 UTCJul 19, 20:25 UTC1h 30m
2026-07-19 SWR9EA - Jul 19, 16:00 UTCJul 19, 17:30 UTC1h 30m
2026-07-19 SWR9EA DUS → ZRH Jul 19, 13:30 UTCJul 19, 14:20 UTC50m
2026-07-19 SWR4ZW ZRH → DUS Jul 19, 11:30 UTCJul 19, 12:25 UTC55m
2026-07-19 SWR4ZW ZRH → DUS Jul 19, 09:15 UTCJul 19, 09:50 UTC35m
2026-07-19 SWR477V - Jul 19, 06:50 UTCJul 19, 07:50 UTC1h 0m
2026-07-19 SWR128K - Jul 19, 04:45 UTCJul 19, 05:50 UTC1h 5m
2026-07-18 SWR2BZ - Jul 18, 19:05 UTCJul 18, 21:25 UTC2h 20m
2026-07-18 SWR3LZ - Jul 18, 16:00 UTCJul 18, 18:05 UTC2h 5m
2026-07-18 SWR7BL - Jul 18, 13:05 UTCJul 18, 15:10 UTC2h 5m
2026-07-18 SWR955M - Jul 18, 09:45 UTCJul 18, 11:25 UTC1h 40m
2026-07-18 SWR ZRH → GVA Jul 18, 07:35 UTCJul 18, 08:10 UTC35m
2026-07-17 SWR829 HAJ → ZRH Jul 17, 19:40 UTCJul 17, 20:40 UTC1h 0m
2026-07-17 SWR5MT - Jul 17, 17:30 UTCJul 17, 18:25 UTC55m
2026-07-17 SWR5MT - Jul 17, 14:50 UTCJul 17, 15:44 UTC55m
2026-07-17 SWR15Y - Jul 17, 12:35 UTCJul 17, 13:35 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-JCL page for operator, model, and routing details .

Mode-S 4B1803 frequently asked

What is Mode-S code 4B1803?
4B1803 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JCL.
Where is Mode-S 4B1803 registered?
Mode-S code 4B1803 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1803 broadcasting right now?
Yes. Mode-S 4B1803 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1803, octal 22614003, decimal 4,921,347.
What flights does 4B1803 operate?
Mode-S 4B1803 has broadcast 20 distinct callsigns, including SWR8YE, SWR74D, SWR357, SWR29K, SWR.