Apparatus

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sensors Mode-S transponder

4601F7

ICAO 24-bit transponder address · allocated to Finland

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

Hex
4601F7
Octal
21400767
Decimal
4,588,023
Country
FI
Tail
OH-ATJ
Type
AT75
No current signal · last broadcast 2h ago
Flights observed
373
Distinct callsigns
20
Country
FI
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4601F7.

Country allocation

The ICAO 24-bit address 4601F7 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
FIN8KH - 8 2026-06-13
FIN1T Finnair 8 2026-06-12
FIN9VM Finnair 7 2026-06-14
FIN8G Finnair 7 2026-06-09
FIN7EN Finnair 7 2026-06-09
FIN6PH Finnair 7 2026-06-09
FIN5RG Finnair 7 2026-06-12
FIN4D Finnair 7 2026-06-09
FIN23P - 7 2026-06-17
FIN1LT Finnair 7 2026-06-12
FIN1KH Finnair 7 2026-06-14
FIN1KE Finnair 7 2026-06-14
FIN1079 - 7 2026-06-17
FIN7BT Finnair 6 2026-06-14
FIN541 Finnair 6 2026-06-03
FIN318 Finnair 6 2026-06-11
FIN2NP Finnair 6 2026-06-14
FIN2KK Finnair 6 2026-06-03
FIN89W Finnair 5 2026-06-04
FIN80U - 5 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-18 FIN6TL TRD → HEL Jun 18, 07:10 UTCJun 18, 09:00 UTC1h 50m
2026-06-18 FIN947 HEL → TRD Jun 18, 04:25 UTCJun 18, 06:25 UTC2h 0m
2026-06-18 FIN9EP - Jun 18, 03:00 UTCJun 18, 03:25 UTC25m
2026-06-17 FIN5PH HEL → TLL Jun 17, 21:45 UTCJun 17, 22:00 UTC15m
2026-06-17 FIN3EA BGO → HEL Jun 17, 18:30 UTCJun 17, 20:50 UTC2h 20m
2026-06-17 FIN7MP HEL → BGO Jun 17, 15:15 UTCJun 17, 17:50 UTC2h 35m
2026-06-17 FIN23P - Jun 17, 12:35 UTCJun 17, 13:40 UTC1h 5m
2026-06-17 FIN1079 - Jun 17, 09:50 UTCJun 17, 10:45 UTC55m
2026-06-17 FIN88T - Jun 17, 06:40 UTCJun 17, 09:00 UTC2h 20m
2026-06-17 FIN30M HEL → BGO Jun 17, 03:20 UTCJun 17, 05:50 UTC2h 30m
2026-06-16 FIN610 IVL → HEL Jun 16, 19:45 UTCJun 16, 20:55 UTC1h 11m
2026-06-16 FIN609 HEL → IVL Jun 16, 16:10 UTCJun 16, 17:30 UTC1h 20m
2026-06-16 FIN6KB TLL → HEL Jun 16, 14:50 UTCJun 16, 15:09 UTC20m
2026-06-16 FIN9KH HEL → TLL Jun 16, 13:50 UTCJun 16, 14:09 UTC20m
2026-06-16 FIN4W - Jun 16, 10:49 UTCJun 16, 12:25 UTC1h 35m
2026-06-16 FIN80U HEL → VNO Jun 16, 08:30 UTCJun 16, 10:04 UTC1h 35m
2026-06-15 FIN934 - Jun 15, 18:29 UTCJun 15, 20:45 UTC2h 15m
2026-06-15 FIN933 - Jun 15, 15:45 UTCJun 15, 17:50 UTC2h 5m
2026-06-15 FIN31L TLL → HEL Jun 15, 13:15 UTCJun 15, 13:34 UTC20m
2026-06-15 FIN6KT HEL → TLL Jun 15, 12:05 UTCJun 15, 12:30 UTC25m
2026-06-15 FIN5NB KAO → HEL Jun 15, 09:00 UTCJun 15, 10:15 UTC1h 15m
2026-06-15 FIN489 HEL → KAO Jun 15, 06:15 UTCJun 15, 07:29 UTC1h 15m
2026-06-15 FIN7DC - Jun 15, 02:30 UTCJun 15, 03:50 UTC1h 20m
2026-06-14 FIN511 HEL → KEM Jun 14, 20:05 UTCJun 14, 21:10 UTC1h 5m
2026-06-14 FIN7BT KAJ → HEL Jun 14, 16:30 UTCJun 14, 19:10 UTC2h 40m
2026-06-14 FIN1044 URE → HEL Jun 14, 14:25 UTCJun 14, 15:05 UTC40m
2026-06-14 FIN5YF HEL → URE Jun 14, 13:15 UTCJun 14, 13:50 UTC35m
2026-06-14 FIN1KH VAA → HEL Jun 14, 11:15 UTCJun 14, 12:10 UTC55m
2026-06-14 FIN9VM HEL → VAA Jun 14, 09:45 UTCJun 14, 10:25 UTC40m
2026-06-14 FIN2NP RIX → HEL Jun 14, 07:45 UTCJun 14, 08:40 UTC55m
2026-06-14 FIN1KE HEL → RIX Jun 14, 06:05 UTCJun 14, 07:00 UTC55m
2026-06-13 FIN1KH VAA → HEL Jun 13, 11:05 UTCJun 13, 11:55 UTC50m
2026-06-13 FIN9VM HEL → VAA Jun 13, 09:35 UTCJun 13, 10:15 UTC40m
2026-06-13 FIN5X KTT → HEL Jun 13, 07:20 UTCJun 13, 08:35 UTC1h 15m
2026-06-13 FIN5PK HEL → KTT Jun 13, 04:20 UTCJun 13, 05:55 UTC1h 35m
2026-06-13 FIN8KH - Jun 13, 02:50 UTCJun 13, 03:25 UTC35m
2026-06-12 FIN1T HEL → JYV Jun 12, 21:35 UTCJun 12, 22:05 UTC30m
2026-06-12 FIN7KE MHQ → HEL Jun 12, 20:20 UTCJun 12, 21:00 UTC40m
2026-06-12 FIN6KC CPH → HEL Jun 12, 19:10 UTCJun 12, 19:50 UTC40m
2026-06-12 FIN7BT KAJ → HEL Jun 12, 17:20 UTCJun 12, 18:30 UTC1h 10m
2026-06-12 FIN5CE HEL → KAJ Jun 12, 15:50 UTCJun 12, 16:45 UTC55m
2026-06-12 FIN1LT TLL → HEL Jun 12, 14:45 UTCJun 12, 15:10 UTC25m
2026-06-12 FIN5RG HEL → TLL Jun 12, 13:40 UTCJun 12, 14:01 UTC20m
2026-06-12 FIN4W VNO → HEL Jun 12, 11:00 UTCJun 12, 12:15 UTC1h 15m
2026-06-12 FIN80U HEL → VNO Jun 12, 08:30 UTCJun 12, 10:20 UTC1h 50m
2026-06-12 FIN8TQ JOE → HEL Jun 12, 06:00 UTCJun 12, 07:00 UTC1h 0m
2026-06-12 FIN4J HEL → MUC Jun 12, 04:40 UTCJun 12, 05:25 UTC45m
2026-06-12 FIN396 - Jun 12, 02:50 UTCJun 12, 03:55 UTC1h 5m
2026-06-11 FIN58E HEL → KOK Jun 11, 21:15 UTCJun 11, 22:00 UTC45m
2026-06-11 FIN318 VAA → HEL Jun 11, 18:55 UTCJun 11, 20:00 UTC1h 5m

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

Mode-S 4601F7 frequently asked

What is Mode-S code 4601F7?
4601F7 is an ICAO 24-bit transponder address. Allocated to Finland. Assigned to OH-ATJ.
Where is Mode-S 4601F7 registered?
Mode-S code 4601F7 is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4601F7 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4601F7, octal 21400767, decimal 4,588,023.
What flights does 4601F7 operate?
Mode-S 4601F7 has broadcast 20 distinct callsigns, including FIN8KH, FIN1T, FIN9VM, FIN8G, FIN7EN.