Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 Jul 26, 21:50 UTC
Flights observed
437
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:50 UTC

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
SWR40L Swiss International Air Lines 11 2026-07-26
SWR915W - 10 2026-07-13
SWR3AP - 10 2026-07-14
SWR3HY - 9 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
SWR87C Swiss International Air Lines 7 2026-07-25
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
SWR4TD - 6 2026-07-25
SWR42V Swiss International Air Lines 6 2026-07-23
SWR1DE - 6 2026-07-23
SWR9TP - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR40L ZRH → VLC Jul 26, 20:15 UTCJul 26, 21:50 UTC1h 35m
2026-07-26 SWR8KY PRG → ZRH Jul 26, 17:55 UTCJul 26, 18:50 UTC55m
2026-07-26 SWR1488 ZRH → PRG Jul 26, 16:00 UTCJul 26, 16:50 UTC50m
2026-07-25 SWR1PX NCE → ZRH Jul 25, 18:35 UTCJul 25, 19:30 UTC55m
2026-07-25 SWR57C ZRH → NCE Jul 25, 16:20 UTCJul 25, 17:20 UTC1h 0m
2026-07-25 SWR4TD - Jul 25, 13:50 UTCJul 25, 15:10 UTC1h 20m
2026-07-25 SWR87C ZRH → BCN Jul 25, 11:05 UTCJul 25, 12:30 UTC1h 25m
2026-07-24 SWR5GT FCO → ZRH Jul 24, 11:05 UTCJul 24, 12:40 UTC1h 35m
2026-07-24 SWR2EP BCN → ZRH Jul 24, 08:25 UTCJul 24, 09:50 UTC1h 25m
2026-07-23 SWR42V CDG → ZRH Jul 23, 18:10 UTCJul 23, 18:55 UTC45m
2026-07-23 SWR1DE - Jul 23, 15:55 UTCJul 23, 16:50 UTC55m
2026-07-22 EDW45L PRN → ZRH Jul 22, 19:30 UTCJul 22, 21:10 UTC1h 40m
2026-07-22 EDW49Q ZRH → PRN Jul 22, 16:35 UTCJul 22, 17:55 UTC1h 20m
2026-07-19 SWR57Z MAD → ZRH Jul 19, 18:55 UTCJul 19, 20:35 UTC1h 40m
2026-07-19 SWR465K ZRH → MAD Jul 19, 14:40 UTCJul 19, 16:55 UTC2h 15m
2026-07-18 EDW57P - Jul 18, 18:20 UTCJul 18, 19:45 UTC1h 25m
2026-07-18 EDW58T - Jul 18, 15:30 UTCJul 18, 17:10 UTC1h 40m
2026-07-17 SWR51D MAN → ZRH Jul 17, 14:04 UTCJul 17, 15:35 UTC1h 30m
2026-07-17 SWR2LB ZRH → MAN Jul 17, 11:10 UTCJul 17, 12:45 UTC1h 35m
2026-07-16 SWR4Q - Jul 16, 17:25 UTCJul 16, 18:19 UTC55m
2026-07-16 SWR841C - Jul 16, 15:00 UTCJul 16, 16:00 UTC1h 0m
2026-07-16 SWR5GT - Jul 16, 10:59 UTCJul 16, 12:40 UTC1h 40m
2026-07-16 SWR2EP - Jul 16, 08:10 UTCJul 16, 09:40 UTC1h 30m
2026-07-16 SWR5XL BER → ZRH Jul 16, 05:25 UTCJul 16, 06:25 UTC1h 0m
2026-07-15 SWR9LC ZRH → BER Jul 15, 20:00 UTCJul 15, 21:00 UTC1h 0m
2026-07-15 SWR4TD BCN → ZRH Jul 15, 14:15 UTCJul 15, 15:45 UTC1h 30m
2026-07-15 SWR87C ZRH → BCN Jul 15, 11:25 UTCJul 15, 13:05 UTC1h 40m
2026-07-15 SWR3KH - Jul 15, 08:00 UTCJul 15, 09:05 UTC1h 5m
2026-07-15 SWR3KH ZRH → PRG Jul 15, 05:45 UTCJul 15, 06:40 UTC55m
2026-07-14 SWR2HE - Jul 14, 17:25 UTCJul 14, 18:00 UTC35m
2026-07-14 SWR5BP ZRH → MUC Jul 14, 15:10 UTCJul 14, 15:50 UTC40m
2026-07-14 SWR3HY - Jul 14, 09:20 UTCJul 14, 09:55 UTC35m
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

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 Jul 26, 21:50 UTC.
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 SWR40L, SWR915W, SWR3AP, SWR3HY, SWR2XL.