Apparatus

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sensors Mode-S transponder

4B161B

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-IJR · AIRBUS A-320

Hex
4B161B
Octal
22613033
Decimal
4,920,859
Country
CH
Tail
HB-IJR
Type
A320
No current signal · last broadcast 2h ago
Flights observed
405
Distinct callsigns
20
Country
CH
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4B161B.

Country allocation

The ICAO 24-bit address 4B161B 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
SWR915W - 10 2026-07-13
SWR40L - 10 2026-07-13
SWR3AP - 10 2026-07-14
SWR2XL - 9 2026-07-13
SWR291X - 9 2026-07-14
SWR8AD - 8 2026-06-27
SWR533X - 8 2026-07-07
SWR44X - 8 2026-06-26
SWR3PT - 8 2026-07-07
SWR3HY - 8 2026-06-23
SWR5AX - 7 2026-07-12
SWR336L - 7 2026-07-12
SWR7VE Swiss International Air Lines 6 2026-05-12
SWR7PE - 6 2026-07-12
SWR72L - 6 2026-07-12
SWR9TP - 5 2026-07-13
SWR9CW - 5 2026-06-29
SWR98G - 5 2026-07-08
SWR87C - 5 2026-07-11
SWR5YV - 5 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWR291X ZRH → GVA Jul 14, 07:30 UTCJul 14, 08:00 UTC30m
2026-07-14 SWR3AP - Jul 14, 04:10 UTCJul 14, 05:50 UTC1h 40m
2026-07-13 SWR40L ZRH → VLC Jul 13, 20:40 UTCJul 13, 22:25 UTC1h 45m
2026-07-13 SWR9TP - Jul 13, 18:25 UTCJul 13, 18:55 UTC30m
2026-07-13 SWR3ZK ZRH → GVA Jul 13, 17:00 UTCJul 13, 17:30 UTC30m
2026-07-13 SWR2XL GVA → ZRH Jul 13, 08:20 UTCJul 13, 08:55 UTC35m
2026-07-13 SWR915W ZRH → GVA Jul 13, 06:10 UTCJul 13, 06:45 UTC35m
2026-07-12 SWR72L MUC → ZRH Jul 12, 19:55 UTCJul 12, 20:30 UTC35m
2026-07-12 SWR7PE ZRH → MUC Jul 12, 17:55 UTCJul 12, 18:25 UTC30m
2026-07-12 SWR5AX VLC → ZRH Jul 12, 14:45 UTCJul 12, 16:40 UTC1h 55m
2026-07-12 SWR336L ZRH → VLC Jul 12, 11:05 UTCJul 12, 12:55 UTC1h 50m
2026-07-11 EDW53PC IBZ → ZRH Jul 11, 19:50 UTCJul 11, 21:25 UTC1h 35m
2026-07-11 EDW894T ZRH → IBZ Jul 11, 16:45 UTCJul 11, 18:35 UTC1h 50m
2026-07-11 SWR4TD - Jul 11, 13:15 UTCJul 11, 14:40 UTC1h 25m
2026-07-11 SWR87C - Jul 11, 10:45 UTCJul 11, 12:05 UTC1h 20m
2026-07-11 SWR87C ZRH → ZRH Jul 11, 09:20 UTCJul 11, 10:30 UTC1h 10m
2026-07-10 HBIJR ZRH → ZRH Jul 10, 05:10 UTCJul 10, 16:30 UTC11h 20m
2026-07-09 HBIJR ZRH → ZRH Jul 9, 04:55 UTCJul 9, 11:50 UTC6h 55m
2026-07-08 HBIJR ZRH → ZRH Jul 8, 19:35 UTCJul 8, 22:55 UTC3h 20m
2026-07-08 SWR1LK FRA → ZRH Jul 8, 18:55 UTCJul 8, 19:30 UTC35m
2026-07-08 SWR4ET ZRH → FRA Jul 8, 17:10 UTCJul 8, 17:50 UTC40m
2026-07-08 SWR98G - Jul 8, 13:40 UTCJul 8, 15:45 UTC2h 5m
2026-07-08 SWR5YV - Jul 8, 10:35 UTCJul 8, 12:25 UTC1h 50m
2026-07-08 SWR3KH PRG → ZRH Jul 8, 08:00 UTCJul 8, 09:05 UTC1h 5m
2026-07-08 SWR4WF ZRH → PRG Jul 8, 05:45 UTCJul 8, 06:40 UTC55m
2026-07-07 SWR9YH LUX → ZRH Jul 7, 17:50 UTCJul 7, 18:25 UTC35m
2026-07-07 SWR3AG ZRH → LUX Jul 7, 16:10 UTCJul 7, 16:55 UTC45m
2026-07-07 SWR3PT GVA → ZRH Jul 7, 13:15 UTCJul 7, 13:50 UTC35m
2026-07-07 SWR533X ZRH → GVA Jul 7, 11:25 UTCJul 7, 11:55 UTC30m
2026-07-07 SWR339H - Jul 7, 08:35 UTCJul 7, 09:10 UTC35m
2026-07-07 SWR5CV ZRH → LUX Jul 7, 06:40 UTCJul 7, 07:20 UTC40m
2026-07-07 SWR4VE BCN → ZRH Jul 7, 04:05 UTCJul 7, 05:35 UTC1h 30m
2026-07-06 SWR4KB ZRH → BCN Jul 6, 20:50 UTCJul 6, 22:15 UTC1h 25m
2026-07-05 SWR465Y ALC → ZRH Jul 5, 18:30 UTCJul 5, 20:30 UTC2h 0m
2026-07-05 SWR374P ZRH → ALC Jul 5, 15:00 UTCJul 5, 17:00 UTC2h 0m
2026-07-05 SWR731C HAM → ZRH Jul 5, 09:05 UTCJul 5, 10:15 UTC1h 10m
2026-07-05 SWR92W ZRH → HAM Jul 5, 06:45 UTCJul 5, 07:55 UTC1h 10m
2026-07-05 SWR4VE BCN → ZRH Jul 5, 04:15 UTCJul 5, 05:35 UTC1h 20m
2026-07-04 SWR4KB ZRH → BCN Jul 4, 20:40 UTCJul 4, 22:00 UTC1h 20m
2026-07-04 SWR1AM FRA → ZRH Jul 4, 17:35 UTCJul 4, 18:05 UTC30m
2026-07-04 SWR4B - Jul 4, 15:35 UTCJul 4, 16:30 UTC55m
2026-07-04 SWR5XL - Jul 4, 05:30 UTCJul 4, 06:35 UTC1h 5m
2026-07-03 SWR9LC ZRH → BER Jul 3, 19:45 UTCJul 3, 20:50 UTC1h 5m
2026-07-03 SWR262C - Jul 3, 15:05 UTCJul 3, 17:20 UTC2h 15m
2026-07-03 SWR3WL - Jul 3, 11:40 UTCJul 3, 13:55 UTC2h 15m
2026-07-03 SWR3AV MAN → ZRH Jul 3, 08:50 UTCJul 3, 10:25 UTC1h 35m
2026-07-03 SWR5P ZRH → MAN Jul 3, 05:40 UTCJul 3, 07:35 UTC1h 55m
2026-07-02 SWR8X - Jul 2, 17:55 UTCJul 2, 18:55 UTC1h 0m
2026-07-02 SWR948D ZRH → BER Jul 2, 15:45 UTCJul 2, 16:50 UTC1h 5m
2026-07-02 EDW399L - Jul 2, 09:25 UTCJul 2, 11:10 UTC1h 45m

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

Mode-S 4B161B frequently asked

What is Mode-S code 4B161B?
4B161B is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-IJR.
Where is Mode-S 4B161B registered?
Mode-S code 4B161B is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B161B broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B161B, octal 22613033, decimal 4,920,859.
What flights does 4B161B operate?
Mode-S 4B161B has broadcast 20 distinct callsigns, including SWR915W, SWR40L, SWR3AP, SWR2XL, SWR291X.