sensors Mode-S transponder

4B181B

ICAO 24-bit transponder address · allocated to Switzerland

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

Hex
4B181B
Octal
22614033
Decimal
4,921,371
Country
CH
Tail
HB-JDJ
Type
A20N
No current signal · last broadcast 54m ago
Flights observed
293
Distinct callsigns
20
Country
CH
Last broadcast
54m ago

Last known position

Most recent position reported by Mode-S 4B181B.

Country allocation

The ICAO 24-bit address 4B181B 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 EDW399L CTA → ZRH May 30, 07:05 UTCMay 30, 08:45 UTC1h 40m
2026-05-30 EDW398E ZRH → CTA May 30, 04:10 UTCMay 30, 05:45 UTC1h 35m
2026-05-29 SWR39L LHR → ZRH May 29, 19:25 UTCMay 29, 20:45 UTC1h 20m
2026-05-29 SWR115Y ZRH → LHR May 29, 16:45 UTCMay 29, 18:05 UTC1h 20m
2026-05-29 SWR5AX VLC → ZRH May 29, 13:35 UTCMay 29, 15:30 UTC1h 56m
2026-05-29 SWR336L ZRH → VLC May 29, 10:40 UTCMay 29, 12:20 UTC1h 40m
2026-05-29 SWR2XL GVA → ZRH May 29, 08:20 UTCMay 29, 09:15 UTC55m
2026-05-29 SWR915W ZRH → GVA May 29, 06:05 UTCMay 29, 06:50 UTC45m
2026-05-28 SWR39L LHR → ZRH May 28, 19:25 UTCMay 28, 20:45 UTC1h 20m
2026-05-28 SWR115Y ZRH → LHR May 28, 16:45 UTCMay 28, 18:10 UTC1h 25m
2026-05-28 SWR26W CPH → ZRH May 28, 13:30 UTCMay 28, 14:50 UTC1h 20m
2026-05-28 SWR7VE ZRH → CPH May 28, 10:55 UTCMay 28, 12:25 UTC1h 30m
2026-05-28 SWR52Y BRU → ZRH May 28, 08:15 UTCMay 28, 09:15 UTC1h 0m
2026-05-28 SWR756C ZRH → BRU May 28, 06:00 UTCMay 28, 07:05 UTC1h 5m
2026-05-27 SWR42V CDG → ZRH May 27, 17:55 UTCMay 27, 18:45 UTC50m
2026-05-27 SWR1DE - May 27, 15:55 UTCMay 27, 16:55 UTC1h 0m
2026-05-27 SWR935L ATH → ZRH May 27, 11:30 UTCMay 27, 14:00 UTC2h 30m
2026-05-27 SWR9LA ZRH → ATH May 27, 07:50 UTCMay 27, 10:15 UTC2h 25m
2026-05-27 SWR8AD CPH → ZRH May 27, 04:45 UTCMay 27, 06:09 UTC1h 25m
2026-05-26 SWR44X ZRH → CPH May 26, 19:50 UTCMay 26, 21:14 UTC1h 25m
2026-05-26 SWR438A LHR → ZRH May 26, 17:20 UTCMay 26, 18:30 UTC1h 10m
2026-05-26 SWR21M ZRH → LHR May 26, 14:45 UTCMay 26, 16:00 UTC1h 15m
2026-05-26 SWR3PT ZRH → LHR May 26, 13:10 UTCMay 26, 13:34 UTC25m
2026-05-26 SWR533X ZRH → GVA May 26, 11:30 UTCMay 26, 12:00 UTC30m
2026-05-26 SWR4KT LJU → ZRH May 26, 09:09 UTCMay 26, 10:05 UTC55m
2026-05-26 SWR3VL GVA → ZRH May 26, 07:10 UTCMay 26, 07:59 UTC50m
2026-05-26 SWR49L OTP → ZRH May 26, 03:30 UTCMay 26, 05:25 UTC1h 55m
2026-05-25 SWR1886 ZRH → OTP May 25, 20:30 UTCMay 25, 22:30 UTC2h 0m
2026-05-25 SWR589X ARN → ZRH May 25, 14:00 UTCMay 25, 16:05 UTC2h 5m
2026-05-25 SWR9PX ZRH → ALC May 25, 10:40 UTCMay 25, 12:45 UTC2h 5m
2026-05-25 SWR2083 LIS → ZRH May 25, 05:40 UTCMay 25, 07:55 UTC2h 15m
2026-05-24 SWR755L ZRH → ZRH May 24, 20:30 UTCMay 24, 21:50 UTC1h 20m
2026-05-24 SWR1ZB ATH → ZRH May 24, 14:20 UTCMay 24, 16:45 UTC2h 25m
2026-05-24 SWR5AM ZRH → ATH May 24, 10:45 UTCMay 24, 13:00 UTC2h 15m
2026-05-24 SWR52Y BRU → ZRH May 24, 08:10 UTCMay 24, 09:00 UTC50m
2026-05-24 SWR756C ZRH → BRU May 24, 05:45 UTCMay 24, 06:35 UTC50m
2026-05-23 SWR54M SKG → ZRH May 23, 18:30 UTCMay 23, 20:30 UTC2h 0m
2026-05-23 SWR88C ZRH → SKG May 23, 15:20 UTCMay 23, 17:15 UTC1h 55m
2026-05-23 SWR3PT ZRH → LHR May 23, 13:30 UTCMay 23, 14:00 UTC30m
2026-05-23 SWR533X ZRH → GVA May 23, 12:00 UTCMay 23, 12:30 UTC30m
2026-05-23 SWR9MH STR → ZRH May 23, 09:10 UTCMay 23, 09:40 UTC30m
2026-05-23 SWR1FP ZRH → STR May 23, 07:30 UTCMay 23, 07:50 UTC20m
2026-05-23 SWR1PM ARN → ZRH May 23, 04:20 UTCMay 23, 06:25 UTC2h 5m
2026-05-22 SWR1KV ZRH → ARN May 22, 19:50 UTCMay 22, 22:00 UTC2h 10m
2026-05-22 SWR1YL BCN → ZRH May 22, 16:50 UTCMay 22, 18:25 UTC1h 35m
2026-05-22 SWR1958 ZRH → BCN May 22, 14:15 UTCMay 22, 15:35 UTC1h 20m
2026-05-22 SWR5MP LHR → LHR May 22, 11:40 UTCMay 22, 12:50 UTC1h 10m
2026-05-22 SWR8PZ ZRH → LHR May 22, 08:50 UTCMay 22, 10:15 UTC1h 25m
2026-05-22 SWR1ET AGP → ZRH May 22, 04:40 UTCMay 22, 06:55 UTC2h 15m
2026-05-21 SWR2120 ZRH → AGP May 21, 19:55 UTCMay 21, 22:15 UTC2h 20m

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

Mode-S 4B181B frequently asked

What is Mode-S code 4B181B?
4B181B is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JDJ.
Where is Mode-S 4B181B registered?
Mode-S code 4B181B is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B181B broadcasting right now?
No active broadcast right now. Last signal was 54m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B181B, octal 22614033, decimal 4,921,371.
What flights does 4B181B operate?
Mode-S 4B181B has broadcast 20 distinct callsigns, including SWR49L, SWR1886, SWR8PZ, SWR533X, SWR3PT.