Apparatus

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sensors Mode-S transponder

46120C

ICAO 24-bit transponder address · allocated to Finland

Hex
46120C
Octal
21411014
Decimal
4,592,140
Country
FI
No current signal · last broadcast 2h ago
Flights observed
81
Distinct callsigns
20
Country
FI
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 46120C.

Country allocation

The ICAO 24-bit address 46120C 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
FSF240G - 4 2026-07-08
FSF924A - 3 2026-07-15
FSF821U - 3 2026-07-13
FSF820X - 3 2026-06-20
FSF719H - 3 2026-06-10
FSF702A - 3 2026-06-18
FSF621A - 3 2026-06-16
FSF502B - 3 2026-06-09
FSF294M - 3 2026-07-20
FSF838T - 2 2026-06-07
FSF837S - 2 2026-06-22
FSF709M - 2 2026-06-21
FSF701A - 2 2026-07-04
FSF618R - 2 2026-07-18
FSF603A - 2 2026-06-04
FSF602A - 2 2026-06-26
FSF521X - 2 2026-06-12
FSF515A - 2 2026-06-28
FSF503A - 2 2026-06-24
FSF468U - 2 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 FSF294M - Jul 20, 15:50 UTCJul 20, 16:20 UTC30m
2026-07-20 FSF294M - Jul 20, 14:00 UTCJul 20, 14:10 UTC10m
2026-07-20 FSF294M - Jul 20, 12:45 UTCJul 20, 13:25 UTC40m
2026-07-19 FSF468U - Jul 19, 15:50 UTCJul 19, 18:00 UTC2h 10m
2026-07-19 FSF468U - Jul 19, 12:50 UTCJul 19, 14:45 UTC1h 55m
2026-07-18 FSF602B - Jul 18, 14:10 UTCJul 18, 15:00 UTC50m
2026-07-18 FSF618R - Jul 18, 12:20 UTCJul 18, 13:10 UTC50m
2026-07-18 FSF618R - Jul 18, 10:20 UTCJul 18, 11:35 UTC1h 15m
2026-07-17 FSF234A - Jul 17, 14:35 UTCJul 17, 15:40 UTC1h 5m
2026-07-16 FSF234A - Jul 16, 04:45 UTCJul 16, 05:50 UTC1h 5m
2026-07-15 FSF924A - Jul 15, 12:20 UTCJul 15, 15:20 UTC3h 0m
2026-07-15 FSF924A - Jul 15, 07:40 UTCJul 15, 10:55 UTC3h 15m
2026-07-15 FSF924A GVA → FNI Jul 15, 05:35 UTCJul 15, 06:25 UTC50m
2026-07-13 FSF388P FAB → GVA Jul 13, 16:50 UTCJul 13, 18:40 UTC1h 50m
2026-07-13 FSF821U - Jul 13, 11:30 UTCJul 13, 14:05 UTC2h 35m
2026-07-13 FSF821U - Jul 13, 07:25 UTCJul 13, 10:30 UTC3h 5m
2026-07-12 FSF821U - Jul 12, 11:55 UTCJul 12, 12:45 UTC50m
2026-07-12 FSF388P GVA → FAB Jul 12, 08:45 UTCJul 12, 10:35 UTC1h 50m
2026-07-11 JFA63R BOD → GVA Jul 11, 12:30 UTCJul 11, 14:05 UTC1h 35m
2026-07-11 JFA18A - Jul 11, 09:10 UTCJul 11, 10:30 UTC1h 20m
2026-07-08 FSF240G - Jul 8, 10:05 UTCJul 8, 11:10 UTC1h 5m
2026-07-08 FSF240G GVA → LBG Jul 8, 08:20 UTCJul 8, 09:25 UTC1h 5m
2026-07-07 FSF805A - Jul 7, 09:50 UTCJul 7, 11:00 UTC1h 10m
2026-07-07 FSF937K - Jul 7, 07:20 UTCJul 7, 08:20 UTC1h 0m
2026-07-06 FSF240G - Jul 6, 14:45 UTCJul 6, 15:45 UTC1h 0m
2026-07-06 FSF240G - Jul 6, 12:10 UTCJul 6, 13:20 UTC1h 10m
2026-07-04 FSF701A - Jul 4, 16:15 UTCJul 4, 17:55 UTC1h 40m
2026-07-03 FSF701A - Jul 3, 11:15 UTCJul 3, 13:20 UTC2h 5m
2026-07-02 FSF288G - Jul 2, 13:55 UTCJul 2, 14:50 UTC55m
2026-07-02 FSF288G - Jul 2, 12:15 UTCJul 2, 13:10 UTC55m
2026-07-02 FSF839M - Jul 2, 08:45 UTCJul 2, 11:10 UTC2h 25m
2026-07-01 FSF834L - Jul 1, 11:25 UTCJul 1, 12:25 UTC1h 0m
2026-06-28 FSF443T - Jun 28, 14:14 UTCJun 28, 15:29 UTC1h 15m
2026-06-28 FSF443T - Jun 28, 11:04 UTCJun 28, 12:15 UTC1h 10m
2026-06-28 FSF515A - Jun 28, 08:44 UTCJun 28, 09:45 UTC1h 0m
2026-06-28 FSF515A - Jun 28, 06:10 UTCJun 28, 07:14 UTC1h 5m
2026-06-26 FSF322A - Jun 26, 16:09 UTCJun 26, 17:00 UTC50m
2026-06-26 FSF322A - Jun 26, 11:24 UTCJun 26, 12:34 UTC1h 10m
2026-06-26 FSF602A - Jun 26, 08:45 UTCJun 26, 10:15 UTC1h 30m
2026-06-26 FSF602A - Jun 26, 06:19 UTCJun 26, 07:14 UTC55m
2026-06-25 FSF615A - Jun 25, 17:20 UTCJun 25, 18:24 UTC1h 5m
2026-06-24 FSF503A - Jun 24, 15:09 UTCJun 24, 17:10 UTC2h 0m
2026-06-24 FSF503A - Jun 24, 11:39 UTCJun 24, 13:40 UTC2h 0m
2026-06-22 FSF837S - Jun 22, 10:05 UTCJun 22, 12:00 UTC1h 55m
2026-06-22 FSF837S - Jun 22, 07:14 UTCJun 22, 09:14 UTC2h 0m
2026-06-21 FSF709M - Jun 21, 12:35 UTCJun 21, 16:19 UTC3h 45m
2026-06-21 FSF709M - Jun 21, 09:20 UTCJun 21, 11:40 UTC2h 20m
2026-06-20 FSF820X - Jun 20, 11:59 UTCJun 20, 13:09 UTC1h 10m
2026-06-20 FSF820X - Jun 20, 10:09 UTCJun 20, 11:14 UTC1h 5m
2026-06-20 FSF820X - Jun 20, 08:29 UTCJun 20, 09:24 UTC55m

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.

Mode-S 46120C frequently asked

What is Mode-S code 46120C?
46120C is an ICAO 24-bit transponder address. Allocated to Finland.
Where is Mode-S 46120C registered?
Mode-S code 46120C is allocated to Finland (FI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 46120C 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 46120C, octal 21411014, decimal 4,592,140.
What flights does 46120C operate?
Mode-S 46120C has broadcast 20 distinct callsigns, including FSF240G, FSF924A, FSF821U, FSF820X, FSF719H.