Apparatus

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sensors Mode-S transponder

4601F6

ICAO 24-bit transponder address · allocated to Finland

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

Hex
4601F6
Octal
21400766
Decimal
4,588,022
Country
FI
Tail
OH-ATI
Type
AT75
Broadcasting now · callsign FIN4QA · 1,750 ft
Flights observed
707
Distinct callsigns
20
Country
FI
Last broadcast
4h ago

Current position

4601F6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4601F6 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
FIN27H - 15 2026-07-11
FIN5Y - 14 2026-07-11
FIN54C Finnair 13 2026-06-23
FIN4TA Finnair 13 2026-06-23
FIN2EZ - 13 2026-07-09
FIN1175 - 13 2026-07-09
FIN9T - 11 2026-07-02
FIN7DE - 11 2026-07-02
FIN4D - 11 2026-07-02
FIN1DK - 11 2026-06-25
FIN9EJ - 10 2026-07-08
FIN6PH - 10 2026-07-02
FIN58G - 10 2026-06-26
FIN541 - 10 2026-07-13
FIN2KK - 10 2026-07-13
FIN1PL - 10 2026-07-08
FIN9KH Finnair 9 2026-07-06
FIN7MR - 9 2026-06-26
FIN6KB Finnair 9 2026-07-06
FIN318 - 9 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 FIN3PT HEL → KUO Jul 13, 21:05 UTCJul 13, 21:55 UTC50m
2026-07-13 FIN7RC - Jul 13, 18:35 UTCJul 13, 20:20 UTC1h 45m
2026-07-13 FIN6HA HEL → GOT Jul 13, 16:00 UTCJul 13, 17:50 UTC1h 50m
2026-07-13 FIN2KK - Jul 13, 11:20 UTCJul 13, 12:30 UTC1h 10m
2026-07-13 FIN2KK - Jul 13, 09:25 UTCJul 13, 10:05 UTC40m
2026-07-13 FIN541 - Jul 13, 07:25 UTCJul 13, 08:05 UTC40m
2026-07-13 FIN541 - Jul 13, 04:50 UTCJul 13, 06:10 UTC1h 20m
2026-07-12 FIN7KE - Jul 12, 19:20 UTCJul 12, 20:01 UTC40m
2026-07-12 FIN6KC - Jul 12, 18:05 UTCJul 12, 18:45 UTC40m
2026-07-12 FIN89W VNO → HEL Jul 12, 15:40 UTCJul 12, 17:05 UTC1h 25m
2026-07-12 FIN1RE HEL → VNO Jul 12, 13:30 UTCJul 12, 15:01 UTC1h 30m
2026-07-12 FIN1KH - Jul 12, 11:25 UTCJul 12, 12:20 UTC55m
2026-07-12 FIN9VM - Jul 12, 09:50 UTCJul 12, 10:35 UTC45m
2026-07-12 FIN5EW - Jul 12, 07:50 UTCJul 12, 08:50 UTC1h 0m
2026-07-12 FIN881 - Jul 12, 05:45 UTCJul 12, 06:55 UTC1h 10m
2026-07-12 FIN9EP TLL → HEL Jul 12, 03:05 UTCJul 12, 03:25 UTC20m
2026-07-11 FIN5PH HEL → TLL Jul 11, 21:40 UTCJul 11, 22:01 UTC20m
2026-07-11 FIN27H TLL → HEL Jul 11, 20:25 UTCJul 11, 20:40 UTC15m
2026-07-11 FIN5Y HEL → TLL Jul 11, 18:40 UTCJul 11, 19:05 UTC25m
2026-07-11 FIN488 - Jul 11, 15:35 UTCJul 11, 16:45 UTC1h 10m
2026-07-11 FIN8PK HEL → KAO Jul 11, 13:15 UTCJul 11, 14:20 UTC1h 5m
2026-07-11 FIN2KK - Jul 11, 10:40 UTCJul 11, 12:15 UTC1h 35m
2026-07-11 FIN2KK - Jul 11, 08:45 UTCJul 11, 09:30 UTC45m
2026-07-11 FIN541 - Jul 11, 06:55 UTCJul 11, 07:40 UTC45m
2026-07-11 FIN541 - Jul 11, 04:35 UTCJul 11, 05:50 UTC1h 15m
2026-07-10 FIN5UT - Jul 10, 16:30 UTCJul 10, 18:20 UTC1h 50m
2026-07-10 FIN42T HEL → HEL Jul 10, 13:40 UTCJul 10, 15:45 UTC2h 5m
2026-07-10 FIN7HR TLL → HEL Jul 10, 12:30 UTCJul 10, 12:50 UTC20m
2026-07-10 FIN5AT HEL → TLL Jul 10, 11:35 UTCJul 10, 11:50 UTC15m
2026-07-10 FIN932 - Jul 10, 07:15 UTCJul 10, 09:25 UTC2h 10m
2026-07-10 FIN931 - Jul 10, 04:15 UTCJul 10, 06:20 UTC2h 5m
2026-07-09 FIN5AZ - Jul 9, 20:15 UTCJul 9, 20:30 UTC15m
2026-07-09 FIN4EL - Jul 9, 19:30 UTCJul 9, 19:50 UTC20m
2026-07-09 FIN27H - Jul 9, 18:35 UTCJul 9, 18:50 UTC15m
2026-07-09 FIN5Y HEL → TLL Jul 9, 17:40 UTCJul 9, 18:00 UTC20m
2026-07-09 FIN8G - Jul 9, 15:55 UTCJul 9, 16:45 UTC50m
2026-07-09 FIN7EN - Jul 9, 14:20 UTCJul 9, 15:10 UTC50m
2026-07-09 FIN2EZ - Jul 9, 12:55 UTCJul 9, 13:25 UTC30m
2026-07-09 FIN1175 - Jul 9, 08:40 UTCJul 9, 10:25 UTC1h 45m
2026-07-09 FIN5EW - Jul 9, 06:35 UTCJul 9, 07:50 UTC1h 15m
2026-07-09 FIN881 - Jul 9, 04:45 UTCJul 9, 05:45 UTC1h 0m
2026-07-08 FIN9EJ - Jul 8, 18:40 UTCJul 8, 20:15 UTC1h 35m
2026-07-08 FIN1PL - Jul 8, 16:35 UTCJul 8, 18:00 UTC1h 25m
2026-07-08 FIN2MC - Jul 8, 15:00 UTCJul 8, 15:55 UTC55m
2026-07-08 FIN6WR - Jul 8, 13:25 UTCJul 8, 14:20 UTC55m
2026-07-08 FIN23P - Jul 8, 11:30 UTCJul 8, 12:25 UTC55m
2026-07-08 FIN1079 HEL → RIX Jul 8, 09:50 UTCJul 8, 10:55 UTC1h 5m
2026-07-08 FIN88T - Jul 8, 06:45 UTCJul 8, 09:05 UTC2h 20m
2026-07-08 FIN30M HEL → BGO Jul 8, 03:30 UTCJul 8, 06:00 UTC2h 30m
2026-07-07 FIN318 - Jul 7, 18:40 UTCJul 7, 19:30 UTC50m

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

Mode-S 4601F6 frequently asked

What is Mode-S code 4601F6?
4601F6 is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-ATI.
Where is Mode-S 4601F6 registered?
Mode-S code 4601F6 is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4601F6 broadcasting right now?
Yes. Mode-S 4601F6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4601F6, octal 21400766, decimal 4,588,022.
What flights does 4601F6 operate?
Mode-S 4601F6 has broadcast 20 distinct callsigns, including FIN27H, FIN5Y, FIN54C, FIN4TA, FIN2EZ.