Apparatus

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sensors Mode-S transponder

4B181C

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JDK · AIRBUS A-320neo

Hex
4B181C
Octal
22614034
Decimal
4,921,372
Country
CH
Tail
HB-JDK
Type
A20N
No current signal · last broadcast Jul 26, 19:50 UTC
Flights observed
594
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 19:50 UTC

Last known position

Most recent position reported by Mode-S 4B181C.

Country allocation

The ICAO 24-bit address 4B181C 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
SWR5AX Swiss International Air Lines 15 2026-07-25
SWR336L Swiss International Air Lines 15 2026-07-25
SWR49L - 13 2026-07-16
SWR438A Swiss International Air Lines 11 2026-06-09
SWR39L Swiss International Air Lines 11 2026-07-25
SWR1886 - 11 2026-07-15
SWR115Y Swiss International Air Lines 11 2026-07-25
SWR7DC - 10 2026-07-04
SWR21M Swiss International Air Lines 10 2026-06-09
SWR5AM - 9 2026-06-22
SWR1ZB - 9 2026-06-22
SWR98G - 8 2026-07-14
SWR8QE - 8 2026-07-04
SWR5YV - 8 2026-07-14
SWR3WL - 8 2026-07-05
SWR262C - 8 2026-07-05
SWR1KV Swiss International Air Lines 8 2026-06-09
SWR9LA Swiss International Air Lines 7 2026-07-23
SWR935L Swiss International Air Lines 7 2026-07-23
SWR7MV - 7 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR27M LHR → ZRH Jul 26, 18:35 UTCJul 26, 19:45 UTC1h 10m
2026-07-26 SWR9AM VIE → GVA Jul 26, 16:10 UTCJul 26, 17:25 UTC1h 15m
2026-07-26 SWR5CB BER → ZRH Jul 26, 13:50 UTCJul 26, 14:50 UTC1h 0m
2026-07-26 SWR1PL ZRH → BER Jul 26, 11:15 UTCJul 26, 12:20 UTC1h 5m
2026-07-26 SWR300P INI → ZRH Jul 26, 08:20 UTCJul 26, 09:50 UTC1h 30m
2026-07-26 SWR2512 ZRH → INI Jul 26, 05:10 UTCJul 26, 06:30 UTC1h 20m
2026-07-25 SWR39L LHR → ZRH Jul 25, 19:20 UTCJul 25, 20:35 UTC1h 15m
2026-07-25 SWR115Y ZRH → LHR Jul 25, 16:50 UTCJul 25, 18:10 UTC1h 20m
2026-07-25 SWR5AX VLC → ZRH Jul 25, 13:50 UTCJul 25, 15:35 UTC1h 45m
2026-07-25 SWR336L ZRH → VLC Jul 25, 10:45 UTCJul 25, 12:35 UTC1h 50m
2026-07-25 SWR5PT HAM → ZRH Jul 25, 07:45 UTCJul 25, 09:00 UTC1h 15m
2026-07-25 SWR433Y ZRH → HAM Jul 25, 05:10 UTCJul 25, 06:20 UTC1h 10m
2026-07-24 EDW53PC IBZ → ZRH Jul 24, 19:10 UTCJul 24, 20:50 UTC1h 40m
2026-07-24 EDW894T ZRH → IBZ Jul 24, 16:15 UTCJul 24, 17:55 UTC1h 40m
2026-07-24 SWR4TD - Jul 24, 13:10 UTCJul 24, 14:40 UTC1h 30m
2026-07-24 SWR87C ZRH → BCN Jul 24, 10:40 UTCJul 24, 12:05 UTC1h 25m
2026-07-24 SWR4CX BEG → ZRH Jul 24, 07:50 UTCJul 24, 09:25 UTC1h 35m
2026-07-24 SWR464L ZRH → BEG Jul 24, 05:05 UTCJul 24, 06:35 UTC1h 30m
2026-07-23 SWR8YP BEG → ZRH Jul 23, 18:00 UTCJul 23, 19:30 UTC1h 30m
2026-07-23 SWR2DK ZRH → BEG Jul 23, 15:45 UTCJul 23, 17:10 UTC1h 25m
2026-07-23 SWR935L ATH → ZRH Jul 23, 11:50 UTCJul 23, 14:20 UTC2h 30m
2026-07-23 SWR9LA ZRH → ATH Jul 23, 08:15 UTCJul 23, 10:20 UTC2h 5m
2026-07-23 SWR5XL BER → ZRH Jul 23, 05:30 UTCJul 23, 06:25 UTC55m
2026-07-22 SWR9LC ZRH → BER Jul 22, 19:35 UTCJul 22, 20:40 UTC1h 5m
2026-07-22 SWR2GX LIS → ZRH Jul 22, 15:15 UTCJul 22, 17:30 UTC2h 15m
2026-07-22 SWR2BK ZRH → LIS Jul 22, 11:20 UTCJul 22, 14:00 UTC2h 40m
2026-07-21 SWR1YL BCN → ZRH Jul 21, 18:25 UTCJul 21, 18:50 UTC25m
2026-07-21 SWR1YL BCN → ZRH Jul 21, 16:55 UTCJul 21, 18:15 UTC1h 20m
2026-07-21 SWR1958 ZRH → BCN Jul 21, 14:25 UTCJul 21, 15:50 UTC1h 25m
2026-07-21 SWR5MP LHR → LHR Jul 21, 11:50 UTCJul 21, 13:00 UTC1h 10m
2026-07-21 SWR8PZ ZRH → LHR Jul 21, 09:05 UTCJul 21, 10:30 UTC1h 25m
2026-07-21 SWR1ET AGP → ZRH Jul 21, 04:40 UTCJul 21, 06:55 UTC2h 15m
2026-07-20 SWR2120 - Jul 20, 20:10 UTCJul 20, 22:40 UTC2h 30m
2026-07-20 SWR388G HAM → ZRH Jul 20, 17:35 UTCJul 20, 18:35 UTC1h 0m
2026-07-20 SWR1TX - Jul 20, 15:15 UTCJul 20, 16:25 UTC1h 10m
2026-07-20 SWR1TX - Jul 20, 14:40 UTCJul 20, 15:05 UTC25m
2026-07-20 SWR935L ATH → ZRH Jul 20, 11:25 UTCJul 20, 13:55 UTC2h 30m
2026-07-20 SWR9LA ZRH → ATH Jul 20, 08:00 UTCJul 20, 10:10 UTC2h 10m
2026-07-20 SWR3ZC GVA → ZRH Jul 20, 05:20 UTCJul 20, 05:55 UTC35m
2026-07-19 SWR96B ZRH → GVA Jul 19, 21:05 UTCJul 19, 21:40 UTC35m
2026-07-19 SWR27M LHR → ZRH Jul 19, 18:20 UTCJul 19, 19:35 UTC1h 15m
2026-07-19 SWR9AM - Jul 19, 15:30 UTCJul 19, 16:55 UTC1h 25m
2026-07-19 EDW445 VAR → ZRH Jul 19, 08:20 UTCJul 19, 10:35 UTC2h 15m
2026-07-19 EDW45W ZRH → VAR Jul 19, 05:00 UTCJul 19, 06:55 UTC1h 55m
2026-07-18 SWR39L LHR → ZRH Jul 18, 19:40 UTCJul 18, 20:50 UTC1h 10m
2026-07-18 SWR115Y ZRH → LHR Jul 18, 17:10 UTCJul 18, 18:30 UTC1h 20m
2026-07-18 SWR5AX VLC → ZRH Jul 18, 13:55 UTCJul 18, 15:50 UTC1h 55m
2026-07-18 SWR336L ZRH → VLC Jul 18, 10:25 UTCJul 18, 12:15 UTC1h 50m
2026-07-18 EDW399L CTA → ZRH Jul 18, 07:20 UTCJul 18, 09:15 UTC1h 55m
2026-07-18 EDW398E ZRH → CTA Jul 18, 04:15 UTCJul 18, 05:55 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-JDK page for operator, model, and routing details .

Mode-S 4B181C frequently asked

What is Mode-S code 4B181C?
4B181C is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JDK.
Where is Mode-S 4B181C registered?
Mode-S code 4B181C is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B181C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B181C, octal 22614034, decimal 4,921,372.
What flights does 4B181C operate?
Mode-S 4B181C has broadcast 20 distinct callsigns, including SWR5AX, SWR336L, SWR49L, SWR438A, SWR39L.