Apparatus

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sensors Mode-S transponder

4B169A

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-IOO · AIRBUS A-321

Hex
4B169A
Octal
22613232
Decimal
4,920,986
Country
CH
Tail
HB-IOO
Type
A321
Broadcasting now · callsign SWR44Y · 25,475 ft
Flights observed
480
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 15:05 UTC

Current position

4B169A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B169A 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
SWR9PX Swiss International Air Lines 12 2026-07-22
SWR589X - 12 2026-07-22
SWR5TV - 9 2026-06-28
SWR82L - 8 2026-06-28
SWR4LM - 8 2026-07-20
SWR9VE Swiss International Air Lines 7 2026-07-19
SWR9LA - 7 2026-07-04
SWR9BL - 7 2026-07-09
SWR98P - 7 2026-07-15
SWR935L - 7 2026-07-04
SWR87C - 7 2026-07-06
SWR4TL Swiss International Air Lines 7 2026-07-25
SWR4TD - 7 2026-07-06
SWR493Z - 7 2026-07-19
SWR2XH - 7 2026-07-15
SWR27G Swiss International Air Lines 7 2026-07-19
SWR259T Swiss International Air Lines 7 2026-07-09
SWR242E Swiss International Air Lines 7 2026-07-20
SWR96M Swiss International Air Lines 6 2026-07-23
SWR7VE Swiss International Air Lines 6 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR1YT BDS → ZRH Jul 26, 13:15 UTCJul 26, 14:55 UTC1h 40m
2026-07-26 SWR3BP ZRH → BDS Jul 26, 10:20 UTCJul 26, 11:50 UTC1h 30m
2026-07-26 SWR5PT HAM → ZRH Jul 26, 07:45 UTCJul 26, 08:50 UTC1h 5m
2026-07-26 SWR433Y ZRH → HAM Jul 26, 05:25 UTCJul 26, 06:35 UTC1h 11m
2026-07-25 SWR1LK FRA → ZRH Jul 25, 19:10 UTCJul 25, 19:45 UTC35m
2026-07-25 SWR4ET ZRH → FRA Jul 25, 17:10 UTCJul 25, 17:50 UTC40m
2026-07-25 SWR26W - Jul 25, 13:40 UTCJul 25, 15:10 UTC1h 30m
2026-07-25 SWR7VE ZRH → CPH Jul 25, 11:05 UTCJul 25, 12:25 UTC1h 20m
2026-07-25 SWR4TL FCO → ZRH Jul 25, 08:30 UTCJul 25, 09:40 UTC1h 10m
2026-07-25 SWR2CL ZRH → FCO Jul 25, 06:00 UTCJul 25, 07:00 UTC1h 0m
2026-07-24 SWR37H BDS → ZRH Jul 24, 18:10 UTCJul 24, 19:50 UTC1h 40m
2026-07-24 SWR7CP ZRH → BDS Jul 24, 15:40 UTCJul 24, 17:00 UTC1h 20m
2026-07-24 SWR1CK DUB → ZRH Jul 24, 12:35 UTCJul 24, 14:15 UTC1h 40m
2026-07-24 SWR477L ZRH → ZRH Jul 24, 09:15 UTCJul 24, 11:05 UTC1h 50m
2026-07-24 SWR3ZC GVA → ZRH Jul 24, 05:35 UTCJul 24, 06:05 UTC30m
2026-07-23 SWR4TH ZRH → GVA Jul 23, 19:25 UTCJul 23, 20:00 UTC35m
2026-07-23 SWR2GX LIS → ZRH Jul 23, 15:10 UTCJul 23, 17:30 UTC2h 20m
2026-07-23 SWR2BK ZRH → LIS Jul 23, 11:15 UTCJul 23, 13:40 UTC2h 25m
2026-07-23 SWR96M BCN → BCN Jul 23, 08:10 UTCJul 23, 09:25 UTC1h 15m
2026-07-23 SWR44Y ZRH → BCN Jul 23, 05:35 UTCJul 23, 07:00 UTC1h 25m
2026-07-22 SWR72L MUC → ZRH Jul 22, 19:15 UTCJul 22, 19:40 UTC25m
2026-07-22 SWR7PE ZRH → BOD Jul 22, 17:25 UTCJul 22, 18:00 UTC35m
2026-07-22 SWR589X ARN → ZRH Jul 22, 14:25 UTCJul 22, 16:20 UTC1h 55m
2026-07-22 SWR9PX ZRH → ALC Jul 22, 11:10 UTCJul 22, 13:15 UTC2h 5m
2026-07-21 SWR122C DUB → ZRH Jul 21, 18:00 UTCJul 21, 19:45 UTC1h 45m
2026-07-21 SWR404 ZRH → DUB Jul 21, 15:00 UTCJul 21, 16:55 UTC1h 55m
2026-07-21 SWR2YB ARN → ZRH Jul 21, 11:05 UTCJul 21, 13:25 UTC2h 20m
2026-07-21 SWR5ZM ZRH → ARN Jul 21, 07:55 UTCJul 21, 10:00 UTC2h 5m
2026-07-21 SWR8AD CPH → ZRH Jul 21, 04:50 UTCJul 21, 06:10 UTC1h 20m
2026-07-20 SWR44X ZRH → CPH Jul 20, 19:55 UTCJul 20, 21:25 UTC1h 30m
2026-07-20 SWR2EG ZRH → ZRH Jul 20, 14:00 UTCJul 20, 18:40 UTC4h 40m
2026-07-20 SWR4LM - Jul 20, 08:20 UTCJul 20, 09:45 UTC1h 25m
2026-07-20 SWR242E ZRH → PMI Jul 20, 05:15 UTCJul 20, 06:50 UTC1h 35m
2026-07-19 SWR9VE ZRH → OPO Jul 19, 18:25 UTCJul 19, 19:45 UTC1h 20m
2026-07-19 SWR3GH ZRH → BCN Jul 19, 15:40 UTCJul 19, 17:05 UTC1h 25m
2026-07-19 SWR493Z HAM → ZRH Jul 19, 13:15 UTCJul 19, 14:25 UTC1h 10m
2026-07-19 SWR27G ZRH → HAM Jul 19, 10:55 UTCJul 19, 12:10 UTC1h 15m
2026-07-19 SWR52Y - Jul 19, 08:05 UTCJul 19, 08:55 UTC50m
2026-07-19 SWR756C ZRH → BRU Jul 19, 05:45 UTCJul 19, 06:40 UTC55m
2026-07-18 SWR2BT ARN → ZRH Jul 18, 18:00 UTCJul 18, 20:10 UTC2h 10m
2026-07-18 SWR1H ZRH → ARN Jul 18, 14:30 UTCJul 18, 16:30 UTC2h 0m
2026-07-18 SWR98F SKG → ZRH Jul 18, 10:50 UTCJul 18, 13:05 UTC2h 15m
2026-07-18 SWR79B ZRH → SKG Jul 18, 07:30 UTCJul 18, 09:25 UTC1h 55m
2026-07-18 SWR3AP VLC → ZRH Jul 18, 04:10 UTCJul 18, 05:45 UTC1h 35m
2026-07-17 SWR40L ZRH → VLC Jul 17, 21:25 UTCJul 17, 23:10 UTC1h 45m
2026-07-17 SWR388G HAM → ZRH Jul 17, 18:34 UTCJul 17, 19:40 UTC1h 5m
2026-07-17 SWR1TX ZRH → HAM Jul 17, 15:44 UTCJul 17, 17:05 UTC1h 20m
2026-07-17 SWR2YB ARN → ZRH Jul 17, 11:35 UTCJul 17, 13:45 UTC2h 10m
2026-07-17 SWR5ZM ZRH → ARN Jul 17, 08:20 UTCJul 17, 10:15 UTC1h 55m
2026-07-17 SWR5XL BER → ZRH Jul 17, 05:45 UTCJul 17, 07:00 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-IOO page for operator, model, and routing details .

Mode-S 4B169A frequently asked

What is Mode-S code 4B169A?
4B169A is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-IOO.
Where is Mode-S 4B169A registered?
Mode-S code 4B169A is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B169A broadcasting right now?
Yes. Mode-S 4B169A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B169A, octal 22613232, decimal 4,920,986.
What flights does 4B169A operate?
Mode-S 4B169A has broadcast 20 distinct callsigns, including SWR9PX, SWR589X, SWR5TV, SWR82L, SWR4LM.