Apparatus

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sensors Mode-S transponder

4631CC

ICAO 24-bit transponder address · allocated to Finland

Currently assigned to OH-SWI · CESSNA 525A Citation CJ2

Hex
4631CC
Octal
21430714
Decimal
4,600,268
Country
FI
Tail
OH-SWI
Type
C25A
Transponder active on ground
Flights observed
72
Distinct callsigns
2
Country
FI
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4631CC.

Country allocation

The ICAO 24-bit address 4631CC falls within the block assigned to Finland (FI) by ICAO Annex 10, Volume III. Every aircraft registered in Finland 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 2 distinct

Callsign Airline Flights Last seen
ABF1 - 70 2026-06-01
OHSWI - 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 ABF1 - Jun 1, 13:20 UTCJun 1, 16:00 UTC2h 40m
2026-06-01 ABF1 HEL → MAN Jun 1, 09:00 UTCJun 1, 12:00 UTC3h 0m
2026-05-31 ABF1 - May 31, 14:20 UTCMay 31, 14:55 UTC35m
2026-05-31 ABF1 - May 31, 10:50 UTCMay 31, 13:45 UTC2h 55m
2026-05-31 ABF1 - May 31, 08:25 UTCMay 31, 10:00 UTC1h 35m
2026-05-30 ABF1 HEL → RHO May 30, 13:15 UTCMay 30, 17:15 UTC4h 0m
2026-05-28 ABF1 - May 28, 09:00 UTCMay 28, 09:50 UTC50m
2026-05-28 ABF1 - May 28, 06:00 UTCMay 28, 06:50 UTC50m
2026-05-26 ABF1 - May 26, 13:29 UTCMay 26, 14:05 UTC35m
2026-05-26 ABF1 - May 26, 06:44 UTCMay 26, 07:15 UTC30m
2026-05-24 ABF1 - May 24, 19:30 UTCMay 24, 20:20 UTC50m
2026-05-24 ABF1 HEL → OUL May 24, 14:15 UTCMay 24, 15:15 UTC1h 0m
2026-05-23 ABF1 HEL → HEL May 23, 09:35 UTCMay 23, 13:25 UTC3h 50m
2026-05-22 OHSWI - May 22, 19:20 UTCMay 22, 19:40 UTC20m
2026-05-22 ABF1 LTN → TLL May 22, 16:10 UTCMay 22, 18:45 UTC2h 35m
2026-05-22 ABF1 - May 22, 13:55 UTCMay 22, 14:45 UTC50m
2026-05-22 OHSWI TLL → BRU May 22, 08:00 UTCMay 22, 10:30 UTC2h 30m
2026-05-22 ABF1 - May 22, 06:05 UTCMay 22, 06:25 UTC20m
2026-05-20 ABF1 BRU → HEL May 20, 03:15 UTCMay 20, 05:35 UTC2h 21m
2026-05-19 ABF1 - May 19, 16:30 UTCMay 19, 18:55 UTC2h 25m
2026-05-19 ABF1 - May 19, 13:15 UTCMay 19, 15:55 UTC2h 40m
2026-05-18 ABF1 - May 18, 07:55 UTCMay 18, 10:45 UTC2h 50m
2026-05-18 ABF1 HEL → TLL May 18, 06:10 UTCMay 18, 06:35 UTC25m
2026-05-17 ABF1 - May 17, 17:30 UTCMay 17, 18:50 UTC1h 20m
2026-05-17 ABF1 - May 17, 13:10 UTCMay 17, 16:45 UTC3h 35m
2026-05-17 ABF1 - May 17, 08:15 UTCMay 17, 12:05 UTC3h 50m
2026-05-17 ABF1 - May 17, 06:10 UTCMay 17, 07:35 UTC1h 25m
2026-05-16 ABF1 - May 16, 13:55 UTCMay 16, 16:15 UTC2h 20m
2026-05-16 ABF1 HEL → TRF May 16, 11:35 UTCMay 16, 13:01 UTC1h 25m
2026-05-15 ABF1 - May 15, 19:15 UTCMay 15, 20:35 UTC1h 20m
2026-05-15 ABF1 - May 15, 17:45 UTCMay 15, 18:40 UTC55m
2026-05-15 ABF1 - May 15, 14:30 UTCMay 15, 15:20 UTC49m
2026-05-15 ABF1 - May 15, 12:10 UTCMay 15, 13:35 UTC1h 25m
2026-05-14 ABF1 TLL → HEL May 14, 10:55 UTCMay 14, 11:10 UTC15m
2026-05-14 ABF1 HEL → TLL May 14, 08:30 UTCMay 14, 08:45 UTC15m
2026-05-06 ABF1 - May 6, 15:30 UTCMay 6, 15:40 UTC10m
2026-05-06 ABF1 - May 6, 11:30 UTCMay 6, 14:30 UTC3h 0m
2026-05-06 ABF1 HEL → CWL May 6, 07:20 UTCMay 6, 10:40 UTC3h 20m
2026-04-29 ABF1 BMA → HEL Apr 29, 06:05 UTCApr 29, 06:59 UTC55m
2026-04-29 ABF1 - Apr 29, 04:05 UTCApr 29, 05:30 UTC1h 25m
2026-04-29 ABF1 - Apr 29, 01:45 UTCApr 29, 03:19 UTC1h 35m
2026-04-27 ABF1 - Apr 27, 11:10 UTCApr 27, 12:10 UTC1h 0m
2026-04-27 ABF1 HEL → OUL Apr 27, 06:20 UTCApr 27, 07:15 UTC55m
2026-04-25 ABF1 - Apr 25, 17:40 UTCApr 25, 20:10 UTC2h 30m
2026-04-25 ABF1 - Apr 25, 14:40 UTCApr 25, 16:50 UTC2h 10m
2026-04-25 ABF1 HEL → GZP Apr 25, 06:10 UTCApr 25, 10:45 UTC4h 35m
2026-04-24 ABF1 - Apr 24, 11:25 UTCApr 24, 15:00 UTC3h 35m
2026-04-24 ABF1 HEL → BOD Apr 24, 05:05 UTCApr 24, 08:45 UTC3h 40m
2026-04-21 ABF1 - Apr 21, 06:55 UTCApr 21, 07:55 UTC1h 0m
2026-04-21 ABF1 - Apr 21, 04:55 UTCApr 21, 06:20 UTC1h 25m

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 OH-SWI page for operator, model, and routing details .

Mode-S 4631CC frequently asked

What is Mode-S code 4631CC?
4631CC is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-SWI.
Where is Mode-S 4631CC registered?
Mode-S code 4631CC is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4631CC broadcasting right now?
Mode-S 4631CC 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 4631CC, octal 21430714, decimal 4,600,268.
What flights does 4631CC operate?
Mode-S 4631CC has broadcast 2 distinct callsigns, including ABF1, OHSWI.