Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4B1693

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-IOH · AIRBUS A-321

Hex
4B1693
Octal
22613223
Decimal
4,920,979
Country
CH
Tail
HB-IOH
Type
A321
Transponder active on ground
Flights observed
347
Distinct callsigns
20
Country
CH
Last broadcast
43m ago

Last known position

Most recent position reported by Mode-S 4B1693.

Country allocation

The ICAO 24-bit address 4B1693 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
SWR5CB Swiss International Air Lines 10 2026-06-24
SWR493Z - 10 2026-07-02
SWR27G - 10 2026-07-02
SWR1PL - 10 2026-06-24
SWR935L - 8 2026-06-26
SWR9LC - 7 2026-07-07
SWR9LA - 7 2026-06-26
SWR5XL - 7 2026-07-08
SWR9VE - 6 2026-06-28
SWR9WE - 5 2026-06-08
SWR9PX - 5 2026-07-05
SWR5XH - 5 2026-06-23
SWR589X - 5 2026-07-05
SWR56Z Swiss International Air Lines 5 2026-06-08
SWR4TL - 5 2026-07-04
SWR4LM - 5 2026-06-05
SWR3GH - 5 2026-06-28
SWR2EG Swiss International Air Lines 5 2026-06-23
SWR2CL - 5 2026-07-04
SWR242E Swiss International Air Lines 5 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWR2GE - Jul 14, 09:05 UTCJul 14, 09:45 UTC40m
2026-07-14 SWR3PE ZRH → CDG Jul 14, 06:05 UTCJul 14, 07:00 UTC55m
2026-07-13 SWR125A CPH → ZRH Jul 13, 18:10 UTCJul 13, 19:40 UTC1h 30m
2026-07-13 SWR3TA ZRH → CPH Jul 13, 15:50 UTCJul 13, 17:10 UTC1h 20m
2026-07-13 SWR2YB ARN → ZRH Jul 13, 11:50 UTCJul 13, 13:50 UTC2h 0m
2026-07-13 SWR5ZM ZRH → ARN Jul 13, 08:20 UTCJul 13, 10:20 UTC2h 0m
2026-07-13 SWR3AP - Jul 13, 04:15 UTCJul 13, 05:55 UTC1h 40m
2026-07-12 SWR40L ZRH → VLC Jul 12, 20:30 UTCJul 12, 22:20 UTC1h 50m
2026-07-12 SWR9TP GVA → ZRH Jul 12, 18:45 UTCJul 12, 19:10 UTC25m
2026-07-12 SWR3ZK ZRH → GVA Jul 12, 17:05 UTCJul 12, 17:40 UTC35m
2026-07-12 SWR1CK DUB → ZRH Jul 12, 13:05 UTCJul 12, 15:05 UTC2h 0m
2026-07-12 SWR477L ZRH → DUB Jul 12, 09:45 UTCJul 12, 11:50 UTC2h 5m
2026-07-12 SWR1PM ARN → ZRH Jul 12, 05:10 UTCJul 12, 07:10 UTC2h 0m
2026-07-11 SWR1KV ZRH → ARN Jul 11, 19:45 UTCJul 11, 22:05 UTC2h 20m
2026-07-10 SWR54M SKG → ZRH Jul 10, 18:15 UTCJul 10, 20:30 UTC2h 15m
2026-07-10 SWR88C ZRH → SKG Jul 10, 15:05 UTCJul 10, 16:50 UTC1h 45m
2026-07-10 SWR98F SKG → ZRH Jul 10, 11:30 UTCJul 10, 13:40 UTC2h 10m
2026-07-10 SWR79B ZRH → SKG Jul 10, 08:20 UTCJul 10, 10:10 UTC1h 50m
2026-07-10 SWR3ZC GVA → ZRH Jul 10, 06:35 UTCJul 10, 07:00 UTC25m
2026-07-10 SWR5100 ZRH → GVA Jul 10, 04:40 UTCJul 10, 05:10 UTC30m
2026-07-08 SWR5XL - Jul 8, 05:20 UTCJul 8, 06:25 UTC1h 5m
2026-07-07 SWR9LC ZRH → BER Jul 7, 20:05 UTCJul 7, 21:15 UTC1h 10m
2026-07-07 SWR26W - Jul 7, 13:50 UTCJul 7, 15:10 UTC1h 20m
2026-07-07 SWR7VE ZRH → CPH Jul 7, 11:00 UTCJul 7, 12:35 UTC1h 35m
2026-07-06 SWR26W - Jul 6, 14:35 UTCJul 6, 16:00 UTC1h 25m
2026-07-06 SWR7VE ZRH → CPH Jul 6, 11:50 UTCJul 6, 13:25 UTC1h 35m
2026-07-06 SWR8ZB - Jul 6, 08:30 UTCJul 6, 09:55 UTC1h 25m
2026-07-06 SWR27Q ZRH → BHX Jul 6, 05:35 UTCJul 6, 07:05 UTC1h 30m
2026-07-05 SWR589X ARN → ZRH Jul 5, 16:05 UTCJul 5, 18:10 UTC2h 5m
2026-07-05 SWR9PX ZRH → ARN Jul 5, 12:35 UTCJul 5, 14:50 UTC2h 15m
2026-07-05 SWR9YD BUD → ZRH Jul 5, 08:25 UTCJul 5, 09:45 UTC1h 20m
2026-07-05 SWR268A ZRH → BUD Jul 5, 05:40 UTCJul 5, 06:55 UTC1h 15m
2026-07-04 SWR589X ARN → ZRH Jul 4, 14:25 UTCJul 4, 16:25 UTC2h 0m
2026-07-04 SWR9PX ZRH → ARN Jul 4, 11:15 UTCJul 4, 13:20 UTC2h 5m
2026-07-04 SWR4TL - Jul 4, 08:35 UTCJul 4, 09:50 UTC1h 15m
2026-07-04 SWR2CL - Jul 4, 05:55 UTCJul 4, 06:55 UTC1h 0m
2026-07-02 SWR493Z HAM → ZRH Jul 2, 13:45 UTCJul 2, 14:45 UTC1h 0m
2026-07-02 SWR27G ZRH → HAM Jul 2, 11:15 UTCJul 2, 12:25 UTC1h 10m
2026-07-02 SWR5PT HAM → ZRH Jul 2, 07:45 UTCJul 2, 08:50 UTC1h 5m
2026-07-02 SWR433Y ZRH → HAM Jul 2, 05:10 UTCJul 2, 06:25 UTC1h 15m
2026-07-01 SWR9KW BUD → ZRH Jul 1, 19:50 UTCJul 1, 21:05 UTC1h 15m
2026-07-01 SWR303C ZRH → BUD Jul 1, 17:15 UTCJul 1, 18:40 UTC1h 25m
2026-07-01 SWR493Z HAM → ZRH Jul 1, 14:15 UTCJul 1, 15:25 UTC1h 10m
2026-07-01 SWR27G ZRH → HAM Jul 1, 11:25 UTCJul 1, 12:35 UTC1h 10m
2026-07-01 SWR52Y - Jul 1, 08:30 UTCJul 1, 09:25 UTC55m
2026-07-01 SWR756C ZRH → BRU Jul 1, 06:05 UTCJul 1, 07:00 UTC55m
2026-06-30 SWR9YH - Jun 30, 17:45 UTCJun 30, 18:30 UTC45m
2026-06-30 SWR3AG ZRH → LUX Jun 30, 16:05 UTCJun 30, 16:40 UTC35m
2026-06-30 SWR2YB ARN → ZRH Jun 30, 11:20 UTCJun 30, 13:35 UTC2h 15m
2026-06-30 SWR5ZM ZRH → ARN Jun 30, 08:05 UTCJun 30, 10:05 UTC2h 0m

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

Mode-S 4B1693 frequently asked

What is Mode-S code 4B1693?
4B1693 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-IOH.
Where is Mode-S 4B1693 registered?
Mode-S code 4B1693 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1693 broadcasting right now?
Mode-S 4B1693 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1693, octal 22613223, decimal 4,920,979.
What flights does 4B1693 operate?
Mode-S 4B1693 has broadcast 20 distinct callsigns, including SWR5CB, SWR493Z, SWR27G, SWR1PL, SWR935L.