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 FIN2EZ · 17,000 ft
Flights observed
805
Distinct callsigns
20
Country
FI
Last broadcast
Jul 26, 21:15 UTC

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 Finnair 17 2026-07-25
FIN5Y Finnair 16 2026-07-25
FIN54C - 14 2026-07-16
FIN4TA - 14 2026-07-16
FIN2EZ - 13 2026-07-09
FIN1175 - 13 2026-07-09
FIN7MR Finnair 12 2026-07-25
FIN58G Finnair 12 2026-07-25
FIN541 - 12 2026-07-14
FIN4D - 12 2026-07-20
FIN2KK - 12 2026-07-14
FIN9T - 11 2026-07-02
FIN9EJ - 11 2026-07-15
FIN7DE - 11 2026-07-02
FIN6WR - 11 2026-07-19
FIN6PH - 11 2026-07-20
FIN2MC - 11 2026-07-19
FIN1PL - 11 2026-07-15
FIN1DK - 11 2026-06-25
FIN1079 Finnair 10 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FIN7NP GDN → HEL Jul 26, 19:25 UTCJul 26, 21:15 UTC1h 50m
2026-07-26 FIN5UT HEL → GDN Jul 26, 16:40 UTCJul 26, 18:45 UTC2h 5m
2026-07-26 FIN3ZP VAA → HEL Jul 26, 15:05 UTCJul 26, 15:55 UTC50m
2026-07-26 FIN1TJ HEL → VAA Jul 26, 13:35 UTCJul 26, 14:15 UTC40m
2026-07-26 FIN23P RIX → HEL Jul 26, 11:30 UTCJul 26, 12:35 UTC1h 5m
2026-07-26 FIN1079 HEL → RIX Jul 26, 09:50 UTCJul 26, 11:20 UTC1h 30m
2026-07-26 FIN6TL TRD → HEL Jul 26, 07:25 UTCJul 26, 09:10 UTC1h 45m
2026-07-26 FIN947 HEL → TRD Jul 26, 04:30 UTCJul 26, 06:30 UTC2h 0m
2026-07-25 FIN27H TLL → HEL Jul 25, 18:30 UTCJul 25, 18:55 UTC25m
2026-07-25 FIN5Y HEL → TLL Jul 25, 17:40 UTCJul 25, 18:00 UTC20m
2026-07-25 FIN488 KAO → HEL Jul 25, 15:55 UTCJul 25, 17:00 UTC1h 5m
2026-07-25 FIN8PK HEL → KAO Jul 25, 13:30 UTCJul 25, 14:35 UTC1h 5m
2026-07-25 FIN5NB KAO → HEL Jul 25, 10:55 UTCJul 25, 12:15 UTC1h 20m
2026-07-25 FIN489 HEL → KAO Jul 25, 08:25 UTCJul 25, 09:35 UTC1h 10m
2026-07-25 FIN58G RIX → HEL Jul 25, 05:40 UTCJul 25, 06:40 UTC1h 0m
2026-07-25 FIN7MR HEL → RIX Jul 25, 04:05 UTCJul 25, 05:05 UTC1h 0m
2026-07-24 FIN934 MAN → HEL Jul 24, 18:20 UTCJul 24, 20:20 UTC2h 0m
2026-07-24 FIN933 HEL → BOO Jul 24, 15:40 UTCJul 24, 17:45 UTC2h 5m
2026-07-24 FIN7PH KEM → HEL Jul 24, 13:10 UTCJul 24, 14:15 UTC1h 5m
2026-07-24 FIN8Q HEL → KEM Jul 24, 11:05 UTCJul 24, 12:15 UTC1h 10m
2026-07-24 FIN932 BOO → HEL Jul 24, 07:10 UTCJul 24, 09:10 UTC2h 0m
2026-07-24 FIN931 HEL → BOO Jul 24, 04:20 UTCJul 24, 06:30 UTC2h 10m
2026-07-23 FIN5AZ TLL → HEL Jul 23, 20:10 UTCJul 23, 20:35 UTC25m
2026-07-23 FIN4EL HEL → TLL Jul 23, 19:25 UTCJul 23, 19:45 UTC20m
2026-07-23 FIN27H TLL → HEL Jul 23, 18:25 UTCJul 23, 18:50 UTC25m
2026-07-23 FIN5Y HEL → TLL Jul 23, 17:40 UTCJul 23, 17:55 UTC15m
2026-07-23 FIN8G - Jul 23, 15:35 UTCJul 23, 16:25 UTC50m
2026-07-23 FIN7EN - Jul 23, 14:05 UTCJul 23, 14:55 UTC50m
2026-07-23 FIN1KH VAA → HEL Jul 23, 11:40 UTCJul 23, 12:25 UTC45m
2026-07-23 FIN9VM HEL → VAA Jul 23, 10:00 UTCJul 23, 10:45 UTC45m
2026-07-23 FIN2NP RIX → HEL Jul 23, 08:05 UTCJul 23, 09:05 UTC1h 0m
2026-07-23 FIN1KE HEL → RIX Jul 23, 06:30 UTCJul 23, 07:25 UTC55m
2026-07-22 FIN13B RIX → HEL Jul 22, 19:00 UTCJul 22, 20:00 UTC1h 0m
2026-07-22 FIN1077 HEN → RIX Jul 22, 17:30 UTCJul 22, 18:20 UTC50m
2026-07-22 FIN8G - Jul 22, 15:55 UTCJul 22, 16:45 UTC50m
2026-07-22 FIN7EN - Jul 22, 14:20 UTCJul 22, 15:10 UTC50m
2026-07-22 FIN1044 URE → HEL Jul 22, 12:30 UTCJul 22, 13:05 UTC35m
2026-07-22 FIN5YF HEL → URE Jul 22, 11:15 UTCJul 22, 11:45 UTC30m
2026-07-22 FIN7MR HEL → RIX Jul 22, 03:50 UTCJul 22, 04:50 UTC1h 0m
2026-07-21 FIN610 - Jul 21, 20:15 UTCJul 21, 21:30 UTC1h 15m
2026-07-21 FIN609 HEL → IVL Jul 21, 16:45 UTCJul 21, 17:55 UTC1h 10m
2026-07-21 FIN42T HEL → HEL Jul 21, 13:40 UTCJul 21, 15:55 UTC2h 15m
2026-07-21 FIN4W - Jul 21, 11:15 UTCJul 21, 12:50 UTC1h 35m
2026-07-21 FIN80U HEL → VNO Jul 21, 08:30 UTCJul 21, 10:35 UTC2h 5m
2026-07-21 FIN5EW - Jul 21, 06:40 UTCJul 21, 07:45 UTC1h 5m
2026-07-21 FIN881 - Jul 21, 04:50 UTCJul 21, 05:55 UTC1h 5m
2026-07-20 FIN5WR IVL → HEL Jul 20, 18:55 UTCJul 20, 20:05 UTC1h 10m
2026-07-20 FIN8TV - Jul 20, 13:45 UTCJul 20, 15:00 UTC1h 15m
2026-07-20 FIN23P - Jul 20, 11:10 UTCJul 20, 12:10 UTC1h 0m
2026-07-20 FIN1079 HEL → RIX Jul 20, 09:30 UTCJul 20, 10:30 UTC1h 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 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.