Apparatus

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sensors Mode-S transponder

4B161A

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-IJQ · AIRBUS A-320

Hex
4B161A
Octal
22613032
Decimal
4,920,858
Country
CH
Tail
HB-IJQ
Type
A320
No current signal · last broadcast Jul 26, 17:50 UTC
Flights observed
496
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 17:50 UTC

Last known position

Most recent position reported by Mode-S 4B161A.

Country allocation

The ICAO 24-bit address 4B161A 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
SWR98G - 13 2026-07-15
SWR915W - 13 2026-07-15
SWR5YV - 13 2026-07-15
SWR2XL - 12 2026-07-15
SWR4ET - 11 2026-07-15
SWR336L Swiss International Air Lines 11 2026-07-19
SWR1LK - 11 2026-07-15
SWR5AX - 10 2026-07-19
SWR533X - 10 2026-07-16
SWR4VE Swiss International Air Lines 10 2026-07-25
SWR4KB - 10 2026-07-24
SWR3PT - 9 2026-07-16
SWR3AP Swiss International Air Lines 8 2026-05-29
SWR9TP - 7 2026-07-19
SWR40L Swiss International Air Lines 7 2026-05-28
SWR3ZK - 7 2026-07-19
SWR8QE - 6 2026-06-26
SWR7VE Swiss International Air Lines 6 2026-05-24
SWR7DC - 6 2026-06-26
SWR3ZC Swiss International Air Lines 6 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR2HE PMI → ZRH Jul 26, 17:15 UTCJul 26, 17:45 UTC30m
2026-07-26 SWR5BP ZRH → MUC Jul 26, 15:10 UTCJul 26, 15:50 UTC40m
2026-07-26 EDW445 VAR → ZRH Jul 26, 07:50 UTCJul 26, 10:05 UTC2h 15m
2026-07-26 EDW45W ZRH → VAR Jul 26, 04:40 UTCJul 26, 06:40 UTC2h 1m
2026-07-25 SWR5DB BOD → ZRH Jul 25, 18:10 UTCJul 25, 19:25 UTC1h 15m
2026-07-25 SWR8AV ZRH → BOD Jul 25, 15:55 UTCJul 25, 17:05 UTC1h 10m
2026-07-25 SWR731C HAM → ZRH Jul 25, 09:30 UTCJul 25, 10:40 UTC1h 10m
2026-07-25 SWR92W ZRH → HAM Jul 25, 06:55 UTCJul 25, 08:05 UTC1h 10m
2026-07-25 SWR4VE GVA → FRA Jul 25, 04:15 UTCJul 25, 05:40 UTC1h 25m
2026-07-24 SWR4KB ZRH → BCN Jul 24, 20:10 UTCJul 24, 21:45 UTC1h 35m
2026-07-24 SWR42V CDG → ZRH Jul 24, 17:55 UTCJul 24, 18:50 UTC55m
2026-07-24 SWR1DE ZRH → CDG Jul 24, 15:50 UTCJul 24, 16:45 UTC55m
2026-07-24 SWR98F SKG → ZRH Jul 24, 10:30 UTCJul 24, 12:50 UTC2h 20m
2026-07-24 SWR79B ZRH → SKG Jul 24, 07:35 UTCJul 24, 09:20 UTC1h 45m
2026-07-23 SWR3ZC GVA → ZRH Jul 23, 05:25 UTCJul 23, 06:00 UTC35m
2026-07-22 SWR4TH ZRH → GVA Jul 22, 20:00 UTCJul 22, 20:35 UTC35m
2026-07-22 SWR42V CDG → ZRH Jul 22, 18:15 UTCJul 22, 19:05 UTC50m
2026-07-22 SWR1DE ZRH → CDG Jul 22, 16:10 UTCJul 22, 17:10 UTC1h 0m
2026-07-22 SWR493Z HAM → ZRH Jul 22, 13:50 UTCJul 22, 14:55 UTC1h 5m
2026-07-22 SWR27G ZRH → HAM Jul 22, 11:35 UTCJul 22, 12:45 UTC1h 10m
2026-07-22 SWR4VE GVA → FRA Jul 22, 04:15 UTCJul 22, 05:25 UTC1h 10m
2026-07-21 SWR4KB ZRH → BCN Jul 21, 20:15 UTCJul 21, 21:40 UTC1h 25m
2026-07-21 SWR5YG - Jul 21, 18:00 UTCJul 21, 18:45 UTC45m
2026-07-21 SWR9CW ZRH → VCE Jul 21, 16:15 UTCJul 21, 16:55 UTC40m
2026-07-20 SWR259T FCO → ZRH Jul 20, 19:15 UTCJul 20, 20:30 UTC1h 15m
2026-07-20 SWR9BL - Jul 20, 16:05 UTCJul 20, 17:05 UTC1h 0m
2026-07-20 SWR83B - Jul 20, 13:05 UTCJul 20, 13:50 UTC45m
2026-07-20 SWR4ZW ZRH → DUS Jul 20, 11:00 UTCJul 20, 12:05 UTC1h 5m
2026-07-20 SWR3TE - Jul 20, 08:50 UTCJul 20, 09:55 UTC1h 5m
2026-07-20 SWR2HD ZRH → BER Jul 20, 06:30 UTCJul 20, 07:45 UTC1h 15m
2026-07-19 SWR9TP GVA → ZRH Jul 19, 18:05 UTCJul 19, 18:35 UTC30m
2026-07-19 SWR3ZK ZRH → GVA Jul 19, 16:25 UTCJul 19, 17:05 UTC40m
2026-07-19 SWR5AX VLC → ZRH Jul 19, 13:15 UTCJul 19, 15:05 UTC1h 50m
2026-07-19 SWR336L ZRH → VLC Jul 19, 10:20 UTCJul 19, 12:10 UTC1h 50m
2026-07-18 SWR1AM FRA → ZRH Jul 18, 17:35 UTCJul 18, 18:10 UTC35m
2026-07-18 SWR4B ZRH → FRA Jul 18, 15:40 UTCJul 18, 16:25 UTC45m
2026-07-17 SWR5PC LGW → ZRH Jul 17, 18:55 UTCJul 17, 20:04 UTC1h 10m
2026-07-17 SWR5GM ZRH → LGW Jul 17, 16:19 UTCJul 17, 17:35 UTC1h 15m
2026-07-16 SWR8X - Jul 16, 18:15 UTCJul 16, 19:20 UTC1h 5m
2026-07-16 SWR948D ZRH → BER Jul 16, 16:05 UTCJul 16, 17:05 UTC1h 0m
2026-07-16 SWR3PT - Jul 16, 13:40 UTCJul 16, 14:10 UTC30m
2026-07-16 SWR533X ZRH → GVA Jul 16, 12:05 UTCJul 16, 12:40 UTC35m
2026-07-15 SWR1LK FRA → ZRH Jul 15, 20:15 UTCJul 15, 20:45 UTC30m
2026-07-15 SWR4ET ZRH → FRA Jul 15, 18:20 UTCJul 15, 19:00 UTC40m
2026-07-15 SWR98G - Jul 15, 14:20 UTCJul 15, 16:45 UTC2h 25m
2026-07-15 SWR5YV - Jul 15, 10:55 UTCJul 15, 12:40 UTC1h 45m
2026-07-15 SWR2XL - Jul 15, 08:15 UTCJul 15, 08:55 UTC40m
2026-07-15 SWR915W ZRH → GVA Jul 15, 05:50 UTCJul 15, 06:15 UTC25m
2026-07-14 SWR5PC LGW → ZRH Jul 14, 18:30 UTCJul 14, 19:40 UTC1h 10m
2026-07-14 SWR5GM ZRH → LGW Jul 14, 16:00 UTCJul 14, 17:15 UTC1h 15m

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

Mode-S 4B161A frequently asked

What is Mode-S code 4B161A?
4B161A is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-IJQ.
Where is Mode-S 4B161A registered?
Mode-S code 4B161A is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B161A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B161A, octal 22613032, decimal 4,920,858.
What flights does 4B161A operate?
Mode-S 4B161A has broadcast 20 distinct callsigns, including SWR98G, SWR915W, SWR5YV, SWR2XL, SWR4ET.