Apparatus

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sensors Mode-S transponder

4601F3

ICAO 24-bit transponder address · allocated to Finland

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

Hex
4601F3
Octal
21400763
Decimal
4,588,019
Country
FI
Tail
OH-ATF
Type
AT75
Broadcasting now · callsign FIN6TL · 23,000 ft
Flights observed
797
Distinct callsigns
20
Country
FI
Last broadcast
Jul 26, 18:05 UTC

Current position

4601F3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4601F3 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
FIN9EJ Finnair 19 2026-07-25
FIN1PL Finnair 19 2026-07-25
FIN23P - 14 2026-07-22
FIN1079 - 13 2026-07-14
FIN8G - 12 2026-07-15
FIN7EN - 12 2026-07-15
FIN6WR - 12 2026-07-24
FIN6TL Finnair 11 2026-07-25
FIN5NB - 11 2026-07-11
FIN592 - 11 2026-07-05
FIN54C Finnair 11 2026-07-23
FIN4PK - 11 2026-07-05
FIN489 - 11 2026-07-11
FIN2MC - 11 2026-07-24
FIN1LT - 11 2026-07-17
FIN1KH Finnair 11 2026-07-25
FIN7BT Finnair 10 2026-07-26
FIN6KT Finnair 10 2026-07-26
FIN5RG - 10 2026-07-17
FIN5CE Finnair 10 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FIN7BT KAJ → HEL Jul 26, 16:45 UTCJul 26, 17:55 UTC1h 10m
2026-07-26 FIN5CE HEL → KAJ Jul 26, 15:10 UTCJul 26, 16:10 UTC1h 0m
2026-07-26 FIN7HR TLL → HEL Jul 26, 13:15 UTCJul 26, 13:35 UTC20m
2026-07-26 FIN5AT HEL → TLL Jul 26, 12:20 UTCJul 26, 12:45 UTC25m
2026-07-26 FIN31L TLL → HEL Jul 26, 10:50 UTCJul 26, 11:15 UTC25m
2026-07-26 FIN6KT HEL → TLL Jul 26, 09:50 UTCJul 26, 10:10 UTC20m
2026-07-26 FIN5EW VBY → HEL Jul 26, 07:55 UTCJul 26, 08:55 UTC1h 0m
2026-07-26 FIN881 HEL → VBY Jul 26, 05:55 UTCJul 26, 07:05 UTC1h 11m
2026-07-25 FIN9EJ VNO → HEL Jul 25, 18:35 UTCJul 25, 20:10 UTC1h 35m
2026-07-25 FIN1PL HEL → VNO Jul 25, 16:30 UTCJul 25, 18:00 UTC1h 30m
2026-07-25 FIN6YP - Jul 25, 14:50 UTCJul 25, 15:40 UTC50m
2026-07-25 FIN42T - Jul 25, 13:25 UTCJul 25, 14:15 UTC50m
2026-07-25 FIN1KH VAA → HEL Jul 25, 11:15 UTCJul 25, 12:15 UTC1h 0m
2026-07-25 FIN9VM HEL → VAA Jul 25, 09:40 UTCJul 25, 10:30 UTC50m
2026-07-25 FIN6TL TRD → HEL Jul 25, 06:55 UTCJul 25, 08:40 UTC1h 45m
2026-07-25 FIN947 HEL → TRD Jul 25, 04:25 UTCJul 25, 06:20 UTC1h 55m
2026-07-25 FIN4QA HEL → AMS Jul 25, 02:35 UTCJul 25, 03:25 UTC50m
2026-07-24 FIN3PT HEL → KUO Jul 24, 21:45 UTCJul 24, 22:30 UTC45m
2026-07-24 FIN9EJ VNO → HEL Jul 24, 18:35 UTCJul 24, 20:05 UTC1h 30m
2026-07-24 FIN1PL HEL → VNO Jul 24, 16:35 UTCJul 24, 18:00 UTC1h 25m
2026-07-24 FIN2MC - Jul 24, 14:50 UTCJul 24, 15:50 UTC1h 0m
2026-07-24 FIN6WR HEL → RIX Jul 24, 13:15 UTCJul 24, 14:15 UTC1h 0m
2026-07-24 FIN4W VNO → HEL Jul 24, 10:40 UTCJul 24, 12:15 UTC1h 35m
2026-07-24 FIN80U HEL → VNO Jul 24, 08:30 UTCJul 24, 09:55 UTC1h 25m
2026-07-24 FIN5EW VBY → HEL Jul 24, 06:30 UTCJul 24, 07:30 UTC1h 0m
2026-07-24 FIN881 HEL → VBY Jul 24, 04:50 UTCJul 24, 05:55 UTC1h 5m
2026-07-24 FIN9EP TLL → HEL Jul 24, 03:05 UTCJul 24, 03:30 UTC25m
2026-07-23 FIN5PH HEL → TLL Jul 23, 22:15 UTCJul 23, 22:35 UTC20m
2026-07-23 FIN934 - Jul 23, 18:55 UTCJul 23, 20:55 UTC2h 0m
2026-07-23 FIN933 HEL → BOO Jul 23, 15:35 UTCJul 23, 17:50 UTC2h 15m
2026-07-23 FIN4TA - Jul 23, 13:20 UTCJul 23, 13:40 UTC20m
2026-07-23 FIN54C HEL → TLL Jul 23, 12:30 UTCJul 23, 12:45 UTC15m
2026-07-23 FIN26B KUO → HEL Jul 23, 10:45 UTCJul 23, 11:35 UTC50m
2026-07-23 FIN3KC HEL → KUO Jul 23, 09:15 UTCJul 23, 10:05 UTC50m
2026-07-23 FIN2XM VNO → HEL Jul 23, 07:05 UTCJul 23, 08:35 UTC1h 30m
2026-07-23 FIN3V HEL → VNO Jul 23, 04:50 UTCJul 23, 06:15 UTC1h 25m
2026-07-22 FIN23P - Jul 22, 11:20 UTCJul 22, 12:25 UTC1h 5m
2026-07-22 FIN30M HEL → BGO Jul 22, 03:30 UTCJul 22, 05:25 UTC1h 55m
2026-07-21 FIN7RC GOT → HEL Jul 21, 19:25 UTCJul 21, 21:05 UTC1h 40m
2026-07-21 FIN6HA HEL → GOT Jul 21, 17:00 UTCJul 21, 18:40 UTC1h 40m
2026-07-21 FIN2MC - Jul 21, 15:10 UTCJul 21, 16:10 UTC1h 0m
2026-07-21 FIN6WR - Jul 21, 13:40 UTCJul 21, 14:35 UTC55m
2026-07-21 FIN31L TLL → HEL Jul 21, 11:50 UTCJul 21, 12:10 UTC20m
2026-07-21 FIN6KT HEL → TLL Jul 21, 10:50 UTCJul 21, 11:15 UTC25m
2026-07-21 FIN88T BGO → HEL Jul 21, 07:45 UTCJul 21, 10:05 UTC2h 20m
2026-07-21 FIN30M HEL → BGO Jul 21, 04:40 UTCJul 21, 07:05 UTC2h 25m
2026-07-20 FIN3EA BGO → HEL Jul 20, 17:55 UTCJul 20, 20:20 UTC2h 25m
2026-07-20 FIN7MP HEL → BGO Jul 20, 14:40 UTCJul 20, 17:05 UTC2h 25m
2026-07-20 FIN4TA - Jul 20, 13:30 UTCJul 20, 13:50 UTC20m
2026-07-20 FIN54C HEL → TLL Jul 20, 12:35 UTCJul 20, 12:55 UTC20m

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

Mode-S 4601F3 frequently asked

What is Mode-S code 4601F3?
4601F3 is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-ATF.
Where is Mode-S 4601F3 registered?
Mode-S code 4601F3 is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4601F3 broadcasting right now?
Yes. Mode-S 4601F3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4601F3, octal 21400763, decimal 4,588,019.
What flights does 4601F3 operate?
Mode-S 4601F3 has broadcast 20 distinct callsigns, including FIN9EJ, FIN1PL, FIN23P, FIN1079, FIN8G.