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sensors Mode-S transponder

4601F8

ICAO 24-bit transponder address · allocated to Finland

Currently assigned to OH-ATK · ATR-72-500

Hex
4601F8
Octal
21400770
Decimal
4,588,024
Country
FI
Tail
OH-ATK
Type
AT75
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
587
Distinct callsigns
20
Country
FI
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S 4601F8.

Country allocation

The ICAO 24-bit address 4601F8 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 20 distinct

Callsign Airline Flights Last seen
FIN322 Finnair 14 2026-07-24
FIN541 - 13 2026-07-06
FIN2KK - 13 2026-07-06
FIN321 Finnair 12 2026-07-23
FIN42T - 11 2026-07-14
FIN5RG Finnair 10 2026-07-25
FIN2EZ Finnair 10 2026-07-18
FIN1LT - 10 2026-07-25
FIN6YP - 9 2026-07-05
FIN317 Finnair 9 2026-07-21
FIN9VM - 8 2026-07-08
FIN947 Finnair 8 2026-07-23
FIN6KT Finnair 8 2026-07-25
FIN5UT - 8 2026-07-13
FIN5PH Finnair 8 2026-07-18
FIN594 - 8 2026-07-16
FIN593 Finnair 8 2026-07-16
FIN3KC Finnair 8 2026-07-24
FIN31L Finnair 8 2026-07-25
FIN311 Finnair 8 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FIN5AZ TLL → HEL Jul 26, 19:45 UTCJul 26, 20:05 UTC20m
2026-07-26 FIN4EL HEL → TLL Jul 26, 18:50 UTCJul 26, 19:10 UTC20m
2026-07-26 FIN27H TLL → HEL Jul 26, 17:40 UTCJul 26, 18:05 UTC25m
2026-07-26 FIN5Y HEL → TLL Jul 26, 16:50 UTCJul 26, 17:10 UTC20m
2026-07-26 FIN8G JOE → HEL Jul 26, 13:40 UTCJul 26, 15:50 UTC2h 10m
2026-07-26 FIN36J TAY → HEL Jul 26, 12:25 UTCJul 26, 13:00 UTC35m
2026-07-26 FIN8NP HEL → TAY Jul 26, 11:05 UTCJul 26, 11:45 UTC40m
2026-07-26 FIN286 JYV → HEL Jul 26, 09:50 UTCJul 26, 10:25 UTC35m
2026-07-26 FIN6LE HEL → JYV Jul 26, 08:40 UTCJul 26, 09:10 UTC30m
2026-07-26 FIN5NB KAO → HEL Jul 26, 06:50 UTCJul 26, 08:00 UTC1h 10m
2026-07-26 FIN489 HEL → KAO Jul 26, 04:20 UTCJul 26, 05:25 UTC1h 5m
2026-07-25 FIN13B RIX → HEL Jul 25, 19:05 UTCJul 25, 20:15 UTC1h 10m
2026-07-25 FIN1077 HEL → RIX Jul 25, 17:30 UTCJul 25, 18:25 UTC55m
2026-07-25 FIN2MC RIX → HEL Jul 25, 15:50 UTCJul 25, 16:50 UTC1h 0m
2026-07-25 FIN6WR HEL → RIX Jul 25, 14:10 UTCJul 25, 15:10 UTC1h 0m
2026-07-25 FIN1LT TLL → HEL Jul 25, 13:05 UTCJul 25, 13:25 UTC20m
2026-07-25 FIN5RG HEL → TLL Jul 25, 11:45 UTCJul 25, 12:05 UTC20m
2026-07-25 FIN31L TLL → HEL Jul 25, 10:45 UTCJul 25, 11:05 UTC20m
2026-07-25 FIN6KT HEL → TLL Jul 25, 09:45 UTCJul 25, 10:05 UTC20m
2026-07-25 FIN2NP RIX → HEL Jul 25, 07:35 UTCJul 25, 08:40 UTC1h 5m
2026-07-25 FIN1KE HEL → RIX Jul 25, 06:00 UTCJul 25, 06:55 UTC55m
2026-07-24 FIN950 TRD → HEL Jul 24, 17:25 UTCJul 24, 19:10 UTC1h 45m
2026-07-24 FIN949 HEL → TRD Jul 24, 14:45 UTCJul 24, 16:45 UTC2h 0m
2026-07-24 FIN4TA TLL → HEL Jul 24, 13:20 UTCJul 24, 13:45 UTC25m
2026-07-24 FIN54C HEL → TLL Jul 24, 12:30 UTCJul 24, 12:50 UTC20m
2026-07-24 FIN26B KUO → HEL Jul 24, 10:35 UTCJul 24, 11:25 UTC50m
2026-07-24 FIN3KC HEL → KUO Jul 24, 09:05 UTCJul 24, 10:00 UTC55m
2026-07-24 FIN312 UME → VAA Jul 24, 07:40 UTCJul 24, 08:25 UTC45m
2026-07-24 FIN311 HEL → VAA Jul 24, 04:30 UTCJul 24, 05:10 UTC40m
2026-07-24 FIN322 VAA → HEL Jul 24, 02:50 UTCJul 24, 03:35 UTC45m
2026-07-23 FIN321 HEL → VAA Jul 23, 21:55 UTCJul 23, 22:40 UTC45m
2026-07-23 FIN7KE - Jul 23, 18:55 UTCJul 23, 20:45 UTC1h 50m
2026-07-23 FIN7BT - Jul 23, 17:10 UTCJul 23, 18:15 UTC1h 5m
2026-07-23 FIN5CE - Jul 23, 15:35 UTCJul 23, 16:40 UTC1h 5m
2026-07-23 FIN1LT - Jul 23, 14:25 UTCJul 23, 14:45 UTC20m
2026-07-23 FIN5RG HEL → TLL Jul 23, 13:30 UTCJul 23, 13:50 UTC20m
2026-07-23 FIN23P RIX → HEL Jul 23, 11:35 UTCJul 23, 12:40 UTC1h 5m
2026-07-23 FIN1079 HEL → RIX Jul 23, 09:40 UTCJul 23, 10:40 UTC1h 0m
2026-07-23 FIN6TL TRD → HEL Jul 23, 07:10 UTCJul 23, 09:00 UTC1h 50m
2026-07-23 FIN947 HEL → TRD Jul 23, 04:35 UTCJul 23, 06:35 UTC2h 0m
2026-07-22 FIN3EA BGO → HEL Jul 22, 18:15 UTCJul 22, 20:45 UTC2h 30m
2026-07-22 FIN7MP HEL → BGO Jul 22, 15:10 UTCJul 22, 17:35 UTC2h 25m
2026-07-22 FIN3RM - Jul 22, 13:35 UTCJul 22, 14:15 UTC40m
2026-07-22 FIN6NC - Jul 22, 12:25 UTCJul 22, 13:00 UTC35m
2026-07-22 FIN9Y - Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 FIN7KL LHR → HEL Jul 22, 04:55 UTCJul 22, 05:25 UTC30m
2026-07-22 FIN322 VAA → HEL Jul 22, 02:55 UTCJul 22, 03:40 UTC45m
2026-07-21 FIN321 HEL → VAA Jul 21, 21:20 UTCJul 21, 22:05 UTC45m
2026-07-21 FIN318 VAA → HEL Jul 21, 19:15 UTCJul 21, 20:10 UTC55m
2026-07-21 FIN317 VAA → UME Jul 21, 16:05 UTCJul 21, 16:45 UTC40m

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

Mode-S 4601F8 frequently asked

What is Mode-S code 4601F8?
4601F8 is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-ATK.
Where is Mode-S 4601F8 registered?
Mode-S code 4601F8 is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4601F8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4601F8, octal 21400770, decimal 4,588,024.
What flights does 4601F8 operate?
Mode-S 4601F8 has broadcast 20 distinct callsigns, including FIN322, FIN541, FIN2KK, FIN321, FIN42T.